ISP1161ABM - ST-Ericsson Inc

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ISP1161A

Full-speed Universal Serial Bus single-chip host and device

controller

Rev. 03 — 23 December 2004 Product data

1. General description

The ISP1161A is a single-chip Universal Serial Bus (USB) Host Controller (HC) and

Device Controller (DC). The Host Controller portion of the ISP1161A complies with

Universal Serial Bus Speciﬁcation Rev. 2.0

, supporting data rates at full-speed

(12 Mbit/s) and low-speed (1.5 Mbit/s). The Device Controller portion of the

ISP1161A also complies with

Universal Serial Bus Speciﬁcation Rev. 2.0

, supporting

data rates at full-speed (12 Mbit/s). These two USB controllers, the HC and the DC,

share the same microprocessor bus interface. They have the same data bus, but

different I/O locations. They also have separate interrupt request output pins,

separate DMA channels that include separate DMA request output pins and DMA

acknowledge input pins. This makes it possible for a microprocessor to control both

the USB HC and the USB DC at the same time.

ISP1161A provides two downstream ports for the USB HC and one upstream port for

the USB DC. Each downstream port has an overcurrent (OC) detection input pin and

power supply switching control output pin. The upstream port has a VBUS detection

input pin. ISP1161A also provides separate wake-up input pins and suspended status

output pins for the USB HC and the USB DC, respectively. This makes power

management ﬂexible. The downstream ports for the HC can be connected with any

USB compliant devices and hubs that have USB upstream ports. The upstream port

for the DC can be connected to any USB compliant USB host and USB hubs that

have USB downstream ports.

The HC is adapted from the

Open Host Controller Interface Speciﬁcation for USB

Release 1.0a

, referred to as OHCI in the rest of this document.

The DC is compliant with most USB device class speciﬁcations such as Imaging

Class, Mass Storage Devices, Communication Devices, Printing Devices and Human

Interface Devices.

ISP1161A is well suited for embedded systems and portable devices that require a

USB host only, a USB device only, or a combination of a conﬁgurable USB host and

USB device. ISP1161A brings high ﬂexibility to the systems that have it built-in. For

example, a system that uses an ISP1161A allows it not only to be connected to a PC

or USB hub with a USB downstream port, but also to be connected to a device that

has a USB upstream port such as a USB printer, USB camera, USB keyboard or a

USB mouse. Therefore, the ISP1161A enables peer-to-peer connectivity between

embedded systems. An interesting application example is to connect an ISP1161A

HC with an ISP1161A DC.

Consider an example of an ISP1161A being used in a Digital Still Camera (DSC)

design. Figure 1 shows an ISP1161A being used as a USB DC. Figure 2 shows an

ISP1161A being used as a USB HC. Figure 3 shows an ISP1161A being used as a

USB HC and a USB DC at the same time.

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 2 of 134

Fig 1. ISP1161A operating as a USB device.

Fig 2. ISP1161A operating as a stand-alone USB host.

Fig 3. ISP1161A operating as both USB host and device simultaneously.

004aaa080

µP SYSTEM

MEMORY

µP

ISP1161A

HOST/

DEVICE

µP bus I/F

USB I/F

USB device

USB cable

USB I/F

EMBEDDED SYSTEM

(host)

DSC

004aaa081

µP SYSTEM

MEMORY

µP

ISP1161A

HOST/

DEVICE

µP bus I/F

USB host

USB cable

USB I/F

EMBEDDED SYSTEM

USB I/F

PRINTER

(device)

DSC

004aaa082

µP SYSTEM

MEMORY

µP

ISP1161A

HOST/

DEVICE

µP bus I/F

USB I/F

USB device

USB cable USB cable

USB host

USB I/FUSB I/F

EMBEDDED SYSTEM

(host)

USB I/F

PRINTER

(device)

DSC

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 3 of 134

2. Features

■Complies with

Universal Serial Bus Speciﬁcation Rev. 2.0

■The Host Controller portion of the ISP1161A supports data transfer at full-speed

(12 Mbit/s) and low-speed (1.5 Mbit/s); the Device Controller portion of the

ISP1161A supports data transfer at full-speed (12 Mbit/s)

■Combines the HC and the DC in a single chip

■On-chip DC complies with most USB device class speciﬁcations

■Both the HC and the DC can be accessed by an external microprocessor via

separate I/O port addresses

■Selectable one or two downstream ports for the HC and one upstream port for the

■High-speed parallel interface to most of the generic microprocessors and

Reduced Instruction Set Computer (RISC) processors such as:

◆Hitachi® SuperH™ SH-3 and SH-4

◆MIPS-based™ RISC

◆ARM7™, ARM9™, StrongARM®

■Maximum 15 Mbyte/s data transfer rate between the microprocessor and the HC,

11.1 Mbyte/s data transfer rate between the microprocessor and the DC

■Supports single-cycle and burst mode DMA operations

■Up to 14 programmable USB endpoints with 2 ﬁxed control IN/OUT endpoints for

the DC

■Built-in separate FIFO buffer RAM for the HC (4 kbytes) and DC (2462 bytes)

■Endpoints with double buffering to increase throughput and ease real-time data

transfer for both DC transfers and HC isochronous (ISO) transactions

■6 MHz crystal oscillator with integrated PLL for low EMI

■Controllable LazyClock (100 kHz ±50 %) output during ‘suspend’

■Clock output with programmable frequency (3 MHz to 48 MHz)

■Software controlled connection to the USB bus (SoftConnect™) on upstream port

for the DC

■Good USB connection indicator that blinks with trafﬁc (GoodLink™) for the DC

■Software selectable internal 15 kΩ pull-down resistors for HC downstream ports

■Dedicated pins for suspend sensing output and wake-up control input for ﬂexible

applications

■Global hardware reset input pin and separate internal software reset circuits for

HC and DC

■Operation from a 5 V or a 3.3 V power supply

■Operating temperature range −40 °Cto+85 °C

■Available in two LQFP64 packages (SOT314-2 and SOT414-1).

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 4 of 134

3. Applications

■Personal Digital Assistant (PDA)

■Digital camera

■Third-generation (3-G) phone

■Set-Top Box (STB)

■Information Appliance (IA)

■Photo printer

■MP3 jukebox

■Game console.

4. Ordering information

Table 1: Ordering information

Type number Package

Name Description Version

ISP1161ABD LQFP64 plastic low proﬁle quad ﬂat package; 64 leads; body 10 ×10 ×1.4 mm SOT314-2

ISP1161ABM LQFP64 plastic low proﬁle quad ﬂat package; 64 leads; body 7 ×7×1.4 mm SOT414-1

xxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx x xxxxxxxxxxxxxx xxxxxxxxxx xxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx

xxxxx xxxxxx xx xxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxxxxxx xxxxxxxxxxxxxxxxxxx

xxxxxxxxxxxxxxxx xxxxxxxxxxxxxx xxxxxx xx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxxxx x x

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 5 of 134

5. Block diagram

Fig 4. Block diagram.

004aaa083

15 kΩ

GND

HOST/

DEVICE

AUTOMUX HOST BUS

INTERFACE

DEVICE BUS

INTERFACE

CLOCK

RECOVERY

POWER

SWITCHING

OVERCURRENT

DETECTION

USB

TRANSCEIVER

USB

TRANSCEIVER

PLL

CLOCK

RECOVERY

GoodLink PROGRAMMABLE

DIVIDER

PHILIPS SLAVE

HOST CONTROLLER

DEVICE

CONTROLLER

PING

RAM

PONG

RAM

VOLTAGE

REGULATOR

internal

supply

internal

reset

3.3 V

VCC

POWER-ON

RESET

Vreg(3.3) Vhold1

DGND GL CLKOUT

1, 8, 15, 18,

35, 45, 62

USB

TRANSCEIVER

ITL0

(PING RAM)

ITL1

(PONG RAM)

ISP1161A

H_WAKEUP

to/from

microprocessor

H_PSW1

413819

Vhold2

245857

2 to 7,

9 to 14,

16, 17,

63, 64

n.c.

61, 20

XTAL1XTAL2

H_PSW2

H_OC1

H_OC2

D_VBUS

DEVICE

CONTROLLER

HOST CONTROLLER

USB bus

upstream

port

USB bus

downstream

ports

H_DM1

H_DP1

H_DM2

H_DP2

D_DM

D_DP

H_SUSPEND

NDP_SEL

D0 to D15

DACK2

DACK1

EOT

DREQ1

DREQ2

INT2

INT1

D_WAKEUP

D_SUSPEND

RESET

ALT RAM

6 MHz

Host bus

Device bus

4×

1.5 kΩ

3.3 V

SoftConnect

AGND

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 6 of 134

Fig 5. Host controller sub-block diagram.

MGT930

ACCESS

DMA

HANDLER

POWER-ON

RESET

ITL0 RAM

ATL RAM

ITL1 RAM

µP

HANDLER

PDT_LIST

PROCESS

USB

TRANSCEIVER

USB bus

H_DP1

H_DM1

H_DP2

H_DM2

PHILIPS

SIE

clock

recovery

µP interface

USB InterfacePhilips sHC coreMemory block

Host controller sub-blocks

BUS I/F

Host

bus I/F

FRAME

MANAGE-

MENT

USB

STATE

MEMORY

MANAGEMENT

UNIT

Fig 6. Device controller sub-block diagram.

MGT931

µP HANDLER

DMA HANDLER

POWER-ON

RESET

EP HANDLER

PHILIPS SIE D_DP

USB bus

D_DM

USB

TRANSCEIVER

MEMORY

MANAGEMENT UNIT

INTEGRATED

RAM

BUS I/F

clock recovery

3.3 V

GoodLink

SoftConnect

Device

bus I/F

Device controller sub-blocks

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 7 of 134

6. Pinning information

6.1 Pinning

6.2 Pin description

Fig 7. Pin conﬁguration LQFP64.

ISP1161ABD

ISP1161ABM

004aaa085

D_DM

H_PSW2

H_PSW1

DGND

n.c.

Vreg(3.3)

AGND

VCC

H_OC2

H_OC1

H_DP2

H_DM2

H_DP1

H_DM1

D_DP49

DGND

D10

D11

D13

DGND

D14

D15

DGND

Vhold1

n.c.

Vhold2

D12

TEST

INT2

INT1

DACK2

DACK1

DREQ2

DREQ1

RESET

D_SUSPEND

DGND

EOT

NDP_SEL

XTAL2

XTAL1

H_SUSPEND

H_WAKEUP

D_VBUS

D_WAKEUP

CLKOUT

Table 2: Pin description for LQFP64

Symbol[1] Pin Type Description

DGND 1 - digital ground

D2 2 I/O bit 2 of bidirectional data; slew-rate controlled; TTL input;

three-state output

D3 3 I/O bit 3 of bidirectional data; slew-rate controlled; TTL input;

three-state output

D4 4 I/O bit 4 of bidirectional data; slew-rate controlled; TTL input;

three-state output

D5 5 I/O bit 5 of bidirectional data; slew-rate controlled; TTL input;

three-state output

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 8 of 134

D6 6 I/O bit 6 of bidirectional data; slew-rate controlled; TTL input;

three-state output

D7 7 I/O bit 7 of bidirectional data; slew-rate controlled; TTL input;

three-state output

DGND 8 - digital ground

D8 9 I/O bit 8 of bidirectional data; slew-rate controlled; TTL input;

three-state output

D9 10 I/O bit 9 of bidirectional data; slew-rate controlled; TTL input;

three-state output

D10 11 I/O bit 10 of bidirectional data; slew-rate controlled; TTL input;

three-state output

D11 12 I/O bit 11 of bidirectional data; slew-rate controlled; TTL input;

three-state output

D12 13 I/O bit 12 of bidirectional data; slew-rate controlled; TTL input;

three-state output

D13 14 I/O bit 13 of bidirectional data; slew-rate controlled; TTL input;

three-state output

DGND 15 - digital ground

D14 16 I/O bit 14 of bidirectional data; slew-rate controlled; TTL input;

three-state output

D15 17 I/O bit 15 of bidirectional data; slew-rate controlled; TTL input;

three-state output

DGND 18 - digital ground

Vhold1 19 - voltage holding pin; internally connected to the Vreg(3.3) and

Vhold2 pins. When VCC is connected to 5 V, this pin will

output 3.3 V, hence do not connect it to 5 V. When VCC is

connected to 3.3 V, this pin can either be connected to

3.3 V or left unconnected. In all cases, decouple this pin to

DGND.

n.c. 20 - no connection

CS 21 I chip select input

RD 22 I read strobe input

WR 23 I write strobe input

Vhold2 24 - voltage holding pin; internally connected to the Vreg(3.3) and

Vhold1 pins. When VCC is connected to 5 V, this pin will

output 3.3 V, hence do not connect it to 5 V. When VCC is

connected to 3.3 V, this pin can either be connected to

3.3 V or left unconnected. In all cases, decouple this pin to

DGND.

DREQ1 25 O HC DMA request output (programmable polarity); signals

to the DMA controller that the ISP1161A wants to start a

DMA transfer; see Section 10.4.1

DREQ2 26 O DC DMA request output (programmable polarity); signals

to the DMA controller that the ISP1161A wants to start a

DMA transfer; see Section 13.1.4

DACK1 27 I HC DMA acknowledge input; when not in use, this pin must

be connected to VCC via an external 10 kΩ resistor

Table 2: Pin description for LQFP64

…continued

Symbol[1] Pin Type Description

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 9 of 134

DACK2 28 I DC DMA acknowledge input; when not in use, this pin must

be connected to VCC via an external 10 kΩ resistor

INT1 29 O HC interrupt output; programmable level, edge triggered

and polarity; see Section 10.4.1

INT2 30 O DC interrupt output; programmable level, edge triggered

and polarity; see Section 13.1.4

TEST 31 O test output; used for test purposes only; this pin is not

connected during normal operation

RESET 32 I reset input (Schmitt trigger); a LOW level produces an

asynchronous reset (internal pull-up resistor)

NDP_SEL 33 I indicates to the HC software the Number of Downstream

Ports (NDP) present:

0 — select 1 downstream port

1 — select 2 downstream ports

only changes the value of the NDP ﬁeld in the

HcRhDescriptorA register; both ports will always be

enabled; see Section 10.3.1

(internal pull-up resistor)

EOT 34 I DMA master device to inform the ISP1161A of end of DMA

transfer; active level is programmable; see Section 10.4.1

DGND 35 - digital ground

D_SUSPEND 36 O DC ‘suspend’ state indicator output; active HIGH

D_WAKEUP 37 I DC wake-up input; generates a remote wake-up from

‘suspend’ state (active HIGH); when not in use, this pin

must be connected to DGND via an external 10 kΩresistor

(internal pull-down resistor)

GL 38 O GoodLink LED indicator output (open-drain, 8 mA); the

LED is default ON, blinks OFF upon USB trafﬁc; to connect

a LED use a series resistor of 470 Ω (VCC = 5.0 V) or

330 Ω (VCC = 3.3 V)

D_VBUS 39 I DC USB upstream port VBUS sensing input; when not in

use, this pin must be connected to DGND via a 1 MΩ

resistor

H_WAKEUP 40 I HC wake-up input; generates a remote wake-up from

‘suspend’ state (active HIGH); when not in use, this pin

must be connected to DGND via an external 10 kΩresistor

(internal pull-down resistor)

CLKOUT 41 O programmable clock output (3 MHz to 48 MHz); default

12 MHz

H_SUSPEND 42 O HC ‘suspend’ state indicator output; active HIGH

XTAL1 43 I crystal input; connected directly to a 6 MHz crystal; when

XTAL1 is connected to an external clock source, pin XTAL2

must be left open

XTAL2 44 O crystal output; connected directly to a 6 MHz crystal; when

pin XTAL1 is connected to an external clock source, this

pin must be left open

Table 2: Pin description for LQFP64

…continued

Symbol[1] Pin Type Description

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 10 of 134

[1] Symbol names with an overscore (e.g. NAME) represent active LOW signals.

DGND 45 - digital ground

H_PSW1 46 O power switching control output for downstream port 1;

open-drain output

H_PSW2 47 O power switching control output for downstream port 2;

open-drain output

D_DM 48 AI/O USB D− data line for DC upstream port; when not in use,

this pin must be left open

D_DP 49 AI/O USB D+ data line for DC upstream port; when not in use,

this pin must be left open

H_DM1 50 AI/O USB D− data line for HC downstream port 1

H_DP1 51 AI/O USB D+ data line for HC downstream port 1

H_DM2 52 AI/O USB D− data line for HC downstream port 2; when not in

use, this pin must be left open

H_DP2 53 AI/O USB D+ data line for HC downstream port 2; when not in

use, this pin must be left open

H_OC1 54 I overcurrent sensing input for HC downstream port 1

H_OC2 55 I overcurrent sensing input for HC downstream port 2

VCC 56 - power supply voltage input (3.0 V to 3.6 V or

4.75 V to 5.25 V). This pin connects to the internal 3.3 V

regulator input. When connected to 5 V, the internal

regulator will output 3.3 V to pins Vreg(3.3),V

hold1 and Vhold2.

When connected to 3.3 V, it will bypass the internal

regulator.

AGND 57 - analog ground

Vreg(3.3) 58 - internal 3.3 V regulator output; when the VCC pin is

connected to 5 V, this pin outputs 3.3 V. When the VCC pin

is connected to 3.3 V, connect this pin to 3.3 V.

A0 59 I address input; selects command (A0 = 1) or data (A0 = 0)

A1 60 I address input; selects AutoMux switching to DC (A1 = 1) or

AutoMux switching to HC (A1 = 0); see Ta bl e 3

n.c. 61 - no connection

DGND 62 - digital ground

D0 63 I/O bit 0 of bidirectional data; slew-rate controlled; TTL input;

three-state output

D1 64 I/O bit 1 of bidirectional data; slew-rate controlled; TTL input;

three-state output

Table 2: Pin description for LQFP64

…continued

Symbol[1] Pin Type Description

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 11 of 134

7. Functional description

7.1 PLL clock multiplier

A 6 MHz to 48 MHz clock multiplier Phase-Locked Loop (PLL) is integrated on-chip.

This allows for the use of a low-cost 6 MHz crystal, which also minimizes EMI. No

external components are required for the operation of the PLL.

7.2 Bit clock recovery

The bit clock recovery circuit recovers the clock from the incoming USB data stream

using a 4 times over-sampling principle. It is able to track jitter and frequency drift as

speciﬁed in the

Universal Serial Bus Speciﬁcation Rev. 2.0

7.3 Analog transceivers

Three sets of transceivers are embedded in the chip: two are used for downstream

ports with USB connector type A; one is used for upstream port with USB connector

type B. The integrated transceivers are compliant with the

Universal Serial Bus

Speciﬁcation Rev. 2.0

. They interface directly with the USB connectors and cables

through external termination resistors.

7.4 Philips Serial Interface Engine (SIE)

The Philips SIE implements the full USB protocol layer. It is completely hardwired for

speed and needs no ﬁrmware intervention. The functions of this block include:

synchronization pattern recognition, parallel to serial conversion, bit (de)stufﬁng,

CRC checking and generation, Packet IDentiﬁer (PID) veriﬁcation and generation,

address recognition, handshake evaluation and generation. There are separate SIEs

in both the HC and the DC.

7.5 SoftConnect

The connection to the USB is accomplished by bringing D+ (for full-speed USB

devices) HIGH through a 1.5 kΩ pull-up resistor. In the ISP1161A DC, the 1.5 kΩ

pull-up resistor is integrated on-chip and is not connected to VCC by default. The

connection is established through a command sent by the external or system

microcontroller. This allows the system microcontroller to complete its initialization

sequence before deciding to establish connection with the USB. Re-initialization of

the USB connection can also be performed without disconnecting the cable.

The ISP1161A DC will check for USB VBUS availability before the connection can be

established. VBUS sensing is provided through pin D_VBUS.

Remark: The tolerance of the internal resistors is 25 %. This is higher than the 5 %

tolerance speciﬁed by the USB speciﬁcation. However, the overall voltage

speciﬁcation for the connection can still be met with a good margin. The decision to

make use of this feature lies with the USB equipment designer.

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 12 of 134

7.6 GoodLink

Indication of a good USB connection is provided at pin GL through GoodLink

technology. During enumeration, the LED indicator will blink on momentarily. When

the DC has been successfully enumerated (the device address is set), the LED

indicator will remain permanently on. Upon each successful packet transfer (with

ACK) to and from the ISP1161A the LED will blink off for 100 ms. During ‘suspend’

state the LED will remain off.

This feature provides a user-friendly indication of the status of the USB device, the

connected hub and the USB trafﬁc. It is a useful ﬁeld diagnostics tool for isolating

faulty equipment. It can therefore help to reduce ﬁeld support and hotline overhead.

8. Microprocessor bus interface

8.1 Programmed I/O (PIO) addressing mode

A generic PIO interface is deﬁned for speed and ease-of-use. It also allows direct

interfacing to most microcontrollers. To a microcontroller, the ISP1161A appears as a

memory device with a 16-bit data bus and uses only two address lines: A1 and A0 to

access the internal control registers and FIFO buffer RAM. Therefore, the ISP1161A

occupies only four I/O ports or four memory locations of a microprocessor. External

microprocessors can read from or write to the ISP1161A internal control registers and

FIFO buffer RAM through the Programmed I/O (PIO) operating mode. Figure 8 shows

the Programmed I/O interface between a microprocessor and an ISP1161A.

8.2 DMA mode

The ISP1161A also provides DMA mode for external microprocessors to access its

internal FIFO buffer RAM. Data can be transferred by DMA operation between a

microprocessor’s system memory and the ISP1161A internal FIFO buffer RAM.

Remark: The DMA operation must be controlled by the external microprocessor

system DMA controller (Master).

Fig 8. Programmed I/O interface between a microprocessor and an ISP1161A.

004aaa086

D[15:0]

IRQ2

MICRO-

PROCESSOR ISP1161A

D[15:0]

µP bus I/F

IRQ1

INT1

INT2

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 13 of 134

Figure 9 shows the DMA interface between a microprocessor system and the

ISP1161A. The ISP1161A provides two DMA channels:

•DMA channel 1 (controlled by DREQ1, DACK1 signals) is for the DMA transfer

between a microprocessor’s system memory and ISP1161A HC internal FIFO

buffer RAM

•DMA channel 2 (controlled by DREQ2, DACK2 signals) is for the DMA transfer

between a microprocessor system memory and the ISP1161A DC internal FIFO

buffer RAM.

The EOT signal is an external end-of-transfer signal used to terminate the DMA

transfer. Some microprocessors may not have this signal. In this case, the ISP1161A

provides an internal EOT signal to terminate the DMA transfer as well. Setting the

HcDMAConﬁguration register (21H - read, A1H - write) enables the ISP1161A HC

internal DMA counter for DMA transfer. When the DMA counter reaches the value set

in the HcTransferCounter register (22H - read, A2H - write), an internal EOT signal

will be generated to terminate the DMA transfer.

8.3 Control register access by PIO mode

8.3.1 I/O port addressing

Ta b l e 3 shows the ISP1161A I/O port addressing. Complete decoding of the I/O port

address should include the chip select signal CS and the address lines A1 and A0.

However, the direction of the access of the I/O ports is controlled by the RD and WR

signals. When RD is LOW, the microprocessor reads data from the ISP1161A data

port. When WR is LOW, the microprocessor writes a command to the command port,

or writes data to the data port.

Fig 9. DMA interface between a microprocessor and an ISP1161A.

004aaa087

D[15:0]

DACK1

DREQ1

EOT

MICRO-

PROCESSOR ISP1161A

D[15:0]

µP bus I/F

DACK1

DREQ1

DACK2

DREQ2

DACK2

DREQ2

EOT

Table 3: I/O port addressing

Port Pin CS Pin A1 Pin A0 Access Data bus width Description

0 LOW LOW LOW R/W 16 bits HC data port

1 LOW LOW HIGH W 16 bits HC command port

2 LOW HIGH LOW R/W 16 bits DC data port

3 LOW HIGH HIGH W 16 bits DC command port

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 14 of 134

Figure 10 and Figure 11 illustrate how an external microprocessor accesses the

ISP1161A internal control registers.

8.3.2 Register access phases

The ISP1161A register structure is a command-data register pair structure. A

complete register access cycle comprises a command phase followed by a data

phase. The command (also known as the index of a register) points the ISP1161A to

the next register to be accessed. A command is 8 bits long. On a microprocessor’s

16-bit data bus, a command occupies the lower byte, with the upper byte ﬁlled with

zeros.

Figure 12 shows a complete 16-bit register access cycle for the ISP1161A. The

microprocessor writes a command code to the command port, and then reads or

writes the data word from or to the data port. Take the example of a microprocessor

attempting to read the ISP1161A’s ID. The ID is kept in the HC’s HcChipID register

(index 27H, read only). The 16-bit register access cycle is therefore:

1. Microprocessor writes the command code of 27H (0027H in 16-bit width) to the

HC command port

2. Microprocessor reads the data word of the chip’s ID from the HC data port.

When A1 = 0, the microprocessor accesses the HC.

When A1 = 1, the microprocessor accesses the DC.

Fig 10. A microprocessor accessing an HC or a DC via an automux switch.

When A0 = 0, the microprocessor accesses the data port.

When A0 = 1, the microprocessor accesses the command port.

Fig 11. A microprocessor accessing internal control registers.

MGT935

µP bus I/F

Host bus I/F

Device bus I/F

AUTOMUX

DC/HC

MGT936

CMD/DATA

SWITCH

Commands

Control registers

Command register

data port

command port

Host or Device

bus I/F

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 15 of 134

Most of the ISP1161A internal control registers are 16 bits wide. Some of the internal

control registers have 32-bit width. Figure 13 shows how the 32-bit internal control

command phase followed by two data phases. In the two data phases, the

microprocessor ﬁrst reads or writes the lower 16-bits, followed by the upper 16-bits.

To further describe the complete access cycles of the internal control registers, the

status of some pins of the microprocessor bus interface are shown in Figure 14 and

Figure 15 for the HC and the DC respectively.

Fig 12. 16-bit register access cycle.

Fig 13. 32-bit register access cycle.

Fig 14. Accessing HC control registers.

MGT937

read/write data

(16 bits)

16-bit register access cycle

write command

(16 bits)

MGT938

read/write data

(lower 16 bits)

32-bit register access cycle

read/write data

(upper 16 bits)

write command

(16 bits)

A1, A0

01 00 00

MGT939

D[15:0]

HC command

code

HC register data

(upper word)

HC register data

readread

writewritewrite

readread

writewrite

(lower word)

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 16 of 134

8.4 FIFO buffer RAM access by PIO mode

Since the ISP1161A internal memory is structured as a FIFO buffer RAM, the FIFO

buffer RAM is mapped to dedicated register ﬁelds. Therefore, accessing the internal

FIFO buffer RAM is similar to accessing the internal control registers in multiple data

phases.

Figure 16 shows a complete access cycle of the HC internal FIFO buffer RAM. For a

write cycle, the microprocessor ﬁrst writes the FIFO buffer RAM’s command code to

the command port, and then writes the data words one by one to the data port until

half of the transfer’s byte count is reached. The HcTransferCounter register (22H -

read, A2H - write) is used to specify the byte count of a FIFO buffer RAM’s read cycle

or write cycle. Every access cycle must be in the same access direction. The read

cycle procedure is similar to the write cycle.

For access to the DC FIFO buffer RAM access, see Section 13.

Fig 15. Accessing DC control registers.

A1, A0

11 10 10

MGT940

D[15:0]

DC command

code

DC register data

(upper word)

DC register data

readread

writewritewrite

readread

writewrite

(lower word)

Fig 16. Internal FIFO buffer RAM access cycle.

MGT941

read/write data

#1 (16 bits)

FIFO buffer RAM access cycle (transfer counter = 2N)

read/write data

#2 (16 bits)

read/write data

#N (16 bits)

write command

(16 bits)

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 17 of 134

8.5 FIFO buffer RAM access by DMA mode

The DMA interface between a microprocessor and the ISP1161A is shown in

Figure 9.

When doing a DMA transfer, at the beginning of every burst the ISP1161A outputs a

DMA request to the microprocessor via the DREQ pin (DREQ1 for HC, DREQ2 for

DC). After receiving this signal, the microprocessor will reply with a DMA

acknowledge via the DACK pin (DACK1 for HC, DACK2 for DC), and at the same

time, execute the DMA transfer through the data bus. In the DMA mode, the

microprocessor must issue a read or write signal to the ISP1161A RD or WR pin. The

ISP1161A will repeat the DMA cycles until it receives an EOT signal to terminate the

DMA transfer.

ISP1161A supports both external and internal EOT signals. The external EOT signal

is received as input on pin EOT, and generally comes from the external

microprocessor. The internal EOT signal is generated by the ISP1161A internally.

To select either EOT method, set the appropriate DMA conﬁguration register (see

Section 10.4.2 and Section 13.1.6). For example, for the HC, setting

DMACounterSelect bit of the HcDMAConﬁguration register (21H - read, A1H - write)

to logic 1 will enable the DMA counter for DMA transfer. When the DMA counter

reaches the value of the HcTransferCounter register, the internal EOT signal will be

generated to terminate the DMA transfer.

ISP1161A supports either single-cycle DMA operation or burst mode DMA operation.

N = 1/2 byte count of transfer data.

Fig 17. DMA transfer in single-cycle mode.

004aaa103

DREQ

DACK

D[15:0]

EOT

data #1 data #2 data #N

RD or WR

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 18 of 134

In Figure 17 and Figure 18, the hardware is conﬁgured such that DREQ is active

HIGH and DACK is active LOW.

8.6 Interrupts

The ISP1161A has separate interrupt request pins for the USB HC (INT1) and the

USB DC (INT2).

8.6.1 Pin conﬁguration

The interrupt output signals have four conﬁguration modes:

Mode 0 Level trigger, active LOW (default at power-up)

Mode 1 Level trigger, active HIGH

Mode 2 Edge trigger, active LOW

Mode 3 Edge trigger, active HIGH.

Figure 19 shows these four interrupt conﬁguration modes. They are programmable

via the HcHardwareConﬁguration register (see Section 10.4.1), which are also used

to disable or enable the signals.

N = 1/2 byte count of transfer data, K = number of cycles/burst.

Fig 18. DMA transfer in burst mode.

004aaa104

data #1 data #K data #2K data #Ndata #(K+1) data #(N−K+1)

DREQ

DACK

D[15:0]

EOT

RD or WR

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 19 of 134

8.6.2 HC’s interrupt output pin (INT1)

To program the four conﬁguration modes of the HC’s interrupt output signal (INT1),

set bits InterruptPinTrigger and InterruptOutputPolarity of the

HcHardwareConﬁguration register (20H - read, A0H - write). Bit InterruptPinEnable is

used as the master enable setting for pin INT1.

INT1 has many associated interrupt events, as shown as in Figure 20.

The interrupt events of the HcµPInterrupt register (24H - read, A4H - write) changes

the status of pin INT1 when the corresponding bits of the HcµPInterruptEnable

of the HcHardwareConﬁguration register) are all set to enable status.

However, events that come from the HcInterruptStatus register (03H - read, 83H -

write) affect only the OPR_Reg bit of the HcµPInterrupt register. They cannot directly

change the status of pin INT1.

Fig 19. Interrupt pin operating modes.

MGT944

INT active

clear or disable INT

Mode 1 level triggered, active HIGH

INT

166 ns

Mode 2 edge triggered, active LOW

INT active

INT

166 ns

Mode 3 edge triggered, active HIGH

INT active clear or disable INT

Mode 0 level triggered, active LOW

INT

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 20 of 134

There are two groups of interrupts represented by group 1 and group 2 in Figure 20.

A pair of registers control each group.

Group 2 contains six possible interrupt events (recorded in the HcInterruptStatus

logic 1; and if the corresponding bit in the HcInterruptEnable register is also logic 1,

the 6-input OR gate would output logic 1. This output is ANDed with the value of MIE

(bit 31 of HcInterruptEnable). Logic 1 at the AND gate will cause bit OPR in the

HcµPInterrupt register to be set to logic 1.

Group 1 contains six possible interrupt events, one of which is the output of group 2

interrupt sources. The HcµPInterrupt and HcµPInterruptEnable registers work in the

same way as the HcInterruptStatus and HcInterruptEnable registers in the interrupt

group 2. The output from the 6-input OR gate is connected to a latch, which is

controlled by InterruptPinEnable (bit 0 of the HcHardwareConﬁguration register).

In the event in which the software wishes to temporarily disable the interrupt output of

the ISP1161A Host Controller, the following procedure should be followed:

1. Make sure that bit InterruptPinEnable in the HcHardwareConﬁguration register is

set to logic 1.

2. Clear all bits in the HcµPInterrupt register.

3. Set bit InterruptPinEnable to logic 0.

Fig 20. HC interrupt logic.

MGT945

SOFITLInt

ATLInt

AllEOTInterrupt

OPR_Reg

HCSuspended

HcµPInterrupt

HcInterruptEnable

HcInterruptStatus

ClkReady

RHSC

FNO

RHSC

FNO

MIE

SOFITLInt

ATLInt

AllEOTInterrupt

OPR_Reg

HCSuspended

HcµPInterruptEnable

ClkReady

LATCH

INT1

group 2

InterruptPinEnable

HcHardwareConfiguration

group 1

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 21 of 134

To re-enable the interrupt generation:

1. Set all bits in the HcµPInterrupt register.

2. Set bit InterruptPinEnable to logic 1.

Remark: Bit InterruptPinEnable in the HcHardwareConﬁguration register latches the

interrupt output. When this bit is set to logic 0, the interrupt output will remain

unchanged, regardless of any operations on the interrupt control registers.

If INT1 is asserted, and the HCD wishes to temporarily mask off the INT signal

without clearing the HcµPInterrupt register, the following procedure should be

followed:

1. Make sure that bit InterruptPinEnable is set to logic 1.

2. Clear all bits in the HcµPInterruptEnable register.

3. Set bit InterruptPinEnable to logic 0.

To re-enable the interrupt generation:

1. Set all bits in the HcµPInterruptEnable register according to the HCD

requirements.

2. Set bit InterruptPinEnable to logic 1.

8.6.3 DC interrupt output pin (INT2)

The four conﬁguration modes of DC’s interrupt output pin INT2 can also be

programmed by setting bits INTPOL and INTLVL of the DcHardwareConﬁguration

B8H - write) is used to enable pin INT2. Figure 21 shows the relationship between the

interrupt events and pin INT2.

Each of the indicated USB events is logged in a status bit of the DcInterrupt register.

Corresponding bits in the Interrupt Enable register determine whether or not an event

will generate an interrupt.

Interrupts can be masked globally by means of the INTENA bit of the DcMode

The active level and signalling mode of the INT output is controlled by the INTPOL

and INTLVL bits of the DcHardwareConﬁguration register (see Ta bl e 8 3 ). Default

settings after reset are active LOW and level mode. When pulse mode is selected, a

pulse of 166 ns is generated when the OR-ed combination of all interrupt bits

changes from logic 0 to logic 1.

Bits RESET, RESUME, SP_EOT, EOT and SOF are cleared upon reading the

DcInterrupt register. The endpoint bits (EP0OUT to EP14) are cleared by reading the

associated DcEndpointStatus register.

Bit BUSTATUS follows the USB bus status exactly, allowing the ﬁrmware to get the

current bus status when reading the DcInterrupt register.

SETUP and OUT token interrupts are generated after the DC has acknowledged the

associated data packet. In bulk transfer mode, the DC will issue interrupts for every

ACK received for an OUT token or transmitted for an IN token.

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 22 of 134

In isochronous mode, an interrupt is issued upon each packet transaction. The

ﬁrmware must take care of timing synchronization with the host. This can be done via

the Pseudo Start-Of-Frame (PSOF) interrupt, enabled via bit IEPSOF in the Interrupt

Enable register. If a Start-Of-Frame is lost, PSOF interrupts are generated every

1 ms. This allows the ﬁrmware to keep data transfer synchronized with the host. After

3 missed SOF events, the DC will enter ‘suspend’ state.

An alternative way of handling isochronous data transfer is to enable both the SOF

and the PSOF interrupts and disable the interrupt for each isochronous endpoint.

Interrupt control: Bit INTENA in the DcMode register is a global enable/disable bit.

The behavior of this bit is given in Figure 22.

Fig 21. DC interrupt logic.

MGT946

RESET

SUSPND

RESUME

SOF

EP14

...

EP0IN

EP0OUT

EOT

IERST

DcInterrupt register

DcInterruptEnable register

IESUSP

IERESM

IESOF

IEP14

...

IEP0IN

IEP0OUT

IEEOT

DcMode register

INTENA

INT2

LATCH

Pin INT2: HIGH = de-assert; LOW = assert (individual interrupts are enabled).

Fig 22. Behavior of bit INTENA.

INT2 pin

004aaa198

INTENA = 0

SOF asserted

INTENA = 1

SOF asserted

INTENA = 0

(during this time,

an interrupt event

occurs. For example,

SOF asserted.)

ABC

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 23 of 134

Event A (see Figure 22): When an interrupt event occurs (for example, SOF interrupt)

with bit INTENA set to logic 0, an interrupt will not be generated at pin INT2.

However, it will be registered in the corresponding DcInterrupt register bit.

Event B (see Figure 22): When bit INTENA is set to logic 1, pin INT2 is asserted

because bit SOF in the DcInterrupt register is already asserted.

Event C (see Figure 22): If the ﬁrmware sets bit INTENA to logic 0, pin INT2 will still

be asserted. The bold dashed line shows the desired behavior of pin INT2.

De-assertion of pin INT2 can be achieved in the following manner. Bits[23:8] of the

DcInterrupt register are endpoint interrupts. These interrupts are cleared on reading

their respective DcEndpointStatus register. Bits[7:0] of the DcInterrupt register are

bus status and EOT interrupts that are cleared on reading the DcInterrupt register.

Make sure that bit INTENA is set to logic 1 when you perform the clear interrupt

commands.

For more information on interrupt control, see Section 13.1.3,Section 13.1.5 and

Section 13.3.6.

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 24 of 134

9. USB host controller (HC)

9.1 HC’s four USB states

The ISP1161A USB HC has four USB states −USBOperational, USBReset,

USBSuspend, and USBResume −that deﬁne the HC’s USB signaling and bus states

responsibilities.

The USB states are reﬂected in the HostControllerFunctionalState ﬁeld of the

HcControl register (01H - read, 81H - write), which is located at bits 7 and 6 of the

The Host Controller Driver (HCD) can perform only the USB state transitions shown

in Figure 23.

Remark: The Software Reset in Figure 23 is not caused by the HcSoftwareReset

command. It is caused by the HostControllerReset ﬁeld of the HcCommandStatus

9.2 Generating USB trafﬁc

USB trafﬁc can be generated only when the ISP1161A USB HC is in the

USBOperational state. Therefore, the HCD must set the

HostControllerFunctionalState ﬁeld of the HcControl register before generating USB

trafﬁc.

A simplistic ﬂow diagram showing when and how to generate USB trafﬁc is shown in

Figure 24. For more detail, refer to the

USB Speciﬁcation Revision 2.0

about the

protocol and ISP1161A USB HC register usage.

Fig 23. ISP1161A HC USB states.

MGT947

USBOperational

USBSuspend

USBResume

USBResume write

remote wake-up

USBReset

USBOperational write

USBSuspend write

USBReset write

hardware or software

reset

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 25 of 134

The USB trafﬁc blocks are:

•Reset

This includes hardware reset by pin RESET and software reset by the

HcSoftwareReset command (A9H). The reset function will clear all the HC’s

internal control registers to their reset status. After reset, the HCD must initialize

the ISP1161A USB HC by setting some registers.

•Initialize HC

It includes:

–Setting the physical size for the HC’s internal FIFO buffer RAM by setting the

HcITLBufferLength register (2AH - read, AAH - write) and the

HcATLBufferLength register (2BH - read, ABH - write)

–Setting the HcHardwareConﬁguration register according to requirements

–Clearing interrupt events, if required

–Enabling interrupt events, if required

–Setting the HcFmInterval register (0DH - read, 8DH - write)

–Setting the HC’s Root Hub registers

–Setting the HcControl register to move the HC into USBOperational state

See also Section 9.5.

•Entry

The normal entry point. The microprocessor returns to this point when there are

HC requests.

•Need USB Trafﬁc

USB devices need the HC to generate USB trafﬁc when they have USB trafﬁc

requests such as:

–Connecting to or disconnecting from the downstream ports

–Issuing the Resume signal to the HC

To generate USB trafﬁc, the HCD must enter the USB transaction loop.

Prepare PTD data in µP System RAM

The communication between the HCD and the ISP1161A HC is in the form of

Philips Transfer Descriptor (PTD) data. The PTD data provides USB trafﬁc

information about the commands, status, and USB data packets.

Fig 24. ISP1161A HC USB transaction loop

MGT948

Need

USB traffic?

Prepare PTD data in

µP system RAM

Initialize

Transfer PTD data into

HC FIFO buffer RAM

HC performs USB transactions

via USB bus I/F

HC informs HCD of

USB traffic results

HC interprets

PTD data

Exit

Entry

HC state =

USBOperational

yes

Reset

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 26 of 134

The physical storage media of PTD data for the HCD is the microprocessor’s

system RAM. For the ISP1161A HC, the storage media is the internal FIFO buffer

RAM.

The HCD prepares PTD data in the microprocessor system RAM for transfer to the

ISP1161A HC internal FIFO buffer RAM.

•Transfer PTD data into HC’s FIFO buffer RAM

When PTD data is ready in the microprocessor’s system RAM, the HCD must

transfer the PTD data from the microprocessor’s system RAM into the ISP1161A

internal FIFO buffer RAM.

•HC interprets PTD data

The HC determines what USB transactions are required based on the PTD data

that has been transferred into the internal FIFO buffer RAM.

•HC performs USB transactions via USB Bus interface

The HC performs the USB transactions with the speciﬁed USB device endpoint

through the USB bus interface.

•HC informs HCD the USB trafﬁc results

The USB transaction status and the feedback from the speciﬁed USB device

endpoint will be put back into the ISP1161A HC internal FIFO buffer RAM in PTD

data format. The HCD can read back the PTD data from the internal FIFO buffer

RAM.

9.3 PTD data structure

The Philips Transfer Descriptor (PTD) data structure provides communication

between the HCD and the ISP1161A USB HC. The PTD data contains information

required by the USB trafﬁc. PTD data consists of a PTD followed by its payload data,

as shown in Figure 25.

The PTD data structure is used by the HC to deﬁne a buffer of data that will be moved

to or from an endpoint in the USB device. This data buffer is set up for the current

frame (1 ms frame) by the HCD. The payload data for every transfer in the frame must

have a PTD as a header to describe the characteristics of the transfer. PTD data is

DWORD aligned.

Fig 25. PTD data in FIFO buffer RAM.

MGT949

PTD

FIFO buffer RAM

payload data

PTD data #1

PTD

payload data

PTD

PTD data #2

PTD data #N

top

bottom

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 27 of 134

9.3.1 PTD data header deﬁnition

The PTD forms the header of the PTD data. It tells the HC the transfer type, where

the payload data goes, and the payload data’s actual size. A PTD is an 8 byte data

structure that is very important for HCD programming.

Table 4: Philips Transfer Descriptor (PTD): bit allocation

Bit 76543210

Byte 0 ActualBytes[7:0]

Byte 1 CompletionCode[3:0] Active Toggle ActualBytes[9:8]

Byte 2 MaxPacketSize[7:0]

Byte 3 EndpointNumber[3:0] Last Speed MaxPacketSize[9:8]

Byte 4 TotalBytes[7:0]

Byte 5 reserved B5_5 reserved DirectionPID[1:0] TotalBytes[9:8]

Byte 6 Format FunctionAddress[6:0]

Byte 7 reserved

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 28 of 134

Table 5: Philips Transfer Descriptor (PTD): bit description

Symbol Access Description

ActualBytes[9:0] R/W Contains the number of bytes that were transferred for this PTD

CompletionCode[3:0] R/W 0000 NoError General TD or isochronous data packet processing

completed with no detected errors.

0001 CRC Last data packet from endpoint contained a CRC error.

0010 BitStufﬁng Last data packet from endpoint contained a bit stufﬁng

violation.

0011 DataToggleMismatch Last packet from endpoint had data toggle PID that did

not match the expected value.

0100 Stall TD was moved to the Done queue because the

endpoint returned a STALL PID.

0101 DeviceNotResponding Device did not respond to token (IN) or did not provide a

handshake (OUT).

0110 PIDCheckFailure Check bits on PID from endpoint failed on data PID (IN)

or handshake (OUT)

0111 UnexpectedPID Received PID was not valid when encountered or PID

value is not deﬁned.

1000 DataOverrun The amount of data returned by the endpoint exceeded

either the size of the maximum data packet allowed

from the endpoint (found in MaximumPacketSize ﬁeld of

ED) or the remaining buffer size.

1001 DataUnderrun The endpoint returned is less than MaximumPacketSize

and that amount was not sufﬁcient to ﬁll the speciﬁed

buffer.

1010 reserved -

1011 reserved -

1100 BufferOverrun During an IN, the HC received data from an endpoint

faster than it could be written to system memory.

1101 BufferUnderrun During an OUT, the HC could not retrieve data from the

system memory fast enough to keep up with the USB

data rate.

Active R/W Set to logic 1 by ﬁrmware to enable the execution of transactions by the HC. When the

transaction associated with this descriptor is completed, the HC sets this bit to logic 0,

indicating that a transaction for this element will not be executed when it is next

encountered in the schedule.

Toggle R/W Used to generate or compare the data PID value (DATA0 or DATA1). It is updated after

each successful transmission or reception of a data packet.

MaxPacketSize[9:0] R The maximum number of bytes that can be sent to or received from the endpoint in a

single data packet.

EndpointNumber[3:0] R USB address of the endpoint within the function.

Last R Last PTD of a list (ITL or ATL). Logic 1 indicates that the PTD is the last PTD.

Speed R Speed of the endpoint:

0 — full speed

1 — low speed

TotalBytes[9:0] R Speciﬁes the total number of bytes to be transferred with this data structure. For Bulk and

Control only, this can be greater than MaximumPacketSize.

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 29 of 134

9.4 HC internal FIFO buffer RAM structure

9.4.1 Partitions

According to the

Universal Serial Bus Speciﬁcation Rev. 2.0

, there are four types of

USB data transfers: Control, Bulk, Interrupt and Isochronous.

The HC’s internal FIFO buffer RAM has a physical size of 4 kbytes. This internal FIFO

buffer RAM is used for transferring data between the microprocessor and USB

peripheral devices. This on-chip buffer RAM can be partitioned into two areas:

Acknowledged Transfer List (ATL) buffer and Isochronous (ISO)Transfer List (ITL)

buffer. The ITL buffer is a Ping-Pong structured FIFO buffer RAM that is used to keep

the payload data and their PTD header for Isochronous transfers. The ATL buffer is a

non Ping-Pong structured FIFO buffer RAM that is used for the other three types of

transfers.

The ITL buffer can be further partitioned into ITL0 and ITL1 for the Ping-Pong

structure. The ITL0 buffer and ITL1 buffer always have the same size. The

microprocessor can put ISO data into either the ITL0 buffer or the ITL1 buffer. When

the microprocessor accesses an ITL buffer, the HC can take over the other ITL buffer

at the same time. This architecture improves the ISO transfer performance.

The HCD can assign the logical size for the ATL buffer and ITL buffers at any time, but

normally at initialization after power-on reset. This is done by setting the

HcATLBufferLength register (2BH - read, ABH - write) and HcITLBufferLength

maximum RAM size of 4 kbytes (ATL buffer + ITL buffer). Figure 26 shows the

partitions of the internal FIFO buffer RAM. When assigning buffer RAM sizes, follow

this formula:

ATL buffer length + 2 × (ITL buffer size) ≤ 1000H (that is, 4 kbytes)

where: ITL buffer size = ITL0 buffer length = ITL1 buffer length

The following assignments are examples of legal uses of the internal FIFO buffer

RAM:

•ATL buffer length = 800H, ITL buffer length = 400H.

This is the maximum use of the internal FIFO buffer RAM.

DirectionPID[1:0] R 00 SETUP

01 OUT

10 IN

11 reserved

B5_5 R/W This bit is logic 0 at power-on reset. When this feature is not used, software used for

ISP1161A is the same for ISP1160 and ISP1161. When this bit is set to logic 1 in this

PTD for interrupt endpoint transfer, only 1 PTD USB transaction will be sent out in 1 ms.

Format R The format of this data structure. If this is a Control, Bulk or Interrupt endpoint, then

Format = 0. If this is an Isochronous endpoint, then Format = 1.

FunctionAddress[6:0] R This is the USB address of the function containing the endpoint that this PTD refers to.

Table 5: Philips Transfer Descriptor (PTD): bit description

…continued

Symbol Access Description

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 30 of 134

•ATL buffer length = 400H, ITL buffer length = 200H.

This is insufﬁcient use of the internal FIFO buffer RAM.

•ATL buffer length = 1000H, ITL buffer length = 0H.

This will use the internal FIFO buffer RAM for only ATL transfers.

The actual requirement for the buffer RAM need not reach the maximum size. You

can make your selection based on your application. The following are some

calculations of the ISO_A or ISO_B space for a frame of data:

• Maximum number of useful data sent during one USB frame is 1280 bytes (20

ISO packets of 64 bytes). The total RAM size needed is:

20 ×8 + 1280 = 1440 bytes.

•Maximum number of packets for different endpoints sent during one USB frame is

150 (150 ISO packets of 1 byte). The total RAM size needed is:

150 ×8+150×1 = 1350 bytes.

•The Ping buffer RAM (ITL0) and the Pong buffer RAM (ITL1) have a maximum size

of 2 kbytes each. All data needed for one frame can be stored in the Ping or the

Pong buffer RAM.

When the embedded system wants to initiate a transfer to the USB bus, the data

needed for one frame is transferred to the ATL buffer or ITL buffer. The

microprocessor detects the buffer status through the interrupt routines. When the

HcBufferStatus register (2CH - read only) indicates that the buffer is empty, then the

microprocessor writes data into the buffer. When the HcBufferStatus register

indicates that the buffer is full, the data is ready on the buffer, and the microprocessor

needs to read data from the buffer.

During every 1 ms, there might be many events to generate interrupt requests to the

microprocessor for data transfer or status retrieval. However, each of the interrupt

types deﬁned in this speciﬁcation can be enabled or disabled by setting the

HcµPInterruptEnable register bits accordingly.

Fig 26. HC internal FIFO buffer RAM partitions.

MGT950

not used

ATL buffer

ITL0

top

bottom

ITL1

ISO_A

FIFO buffer RAM

ISO_B

control/bulk/interrupt

data

programmable

sizes

4 kbytes

ITL buffer

ATL

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 31 of 134

The data transfer can be done via the PIO mode or the DMA mode. The data transfer

rate can go up to 15 Mbyte/s. In DMA operation, single-cycle or multi-cycle burst

modes are supported. Multi-cycle burst modes of 1, 4, or 8 cycles per burst is

supported for ISP1161A.

9.4.2 Data organization

PTD data is used for every data transfer between a microprocessor and the USB bus,

and the PTD data resides in the buffer RAM. For an OUT or SETUP transfer, the

payload data is placed just after the PTD, after which the next PTD is placed. For an

IN transfer, RAM space is reserved for receiving a number of bytes that is equal to the

total bytes of the transfer. After this, the next PTD and its payload data are placed

(see Figure 27).

Remark: The PTD is deﬁned for both ATL and ITL type data transfers. For ITL, the

PTD data is put into ITL buffer RAM, and the ISP1161A takes care of the Ping-Pong

action for the ITL buffer RAM access.

The PTD data (PTD header and its payload data) is a structure of DWORD (double-

word or 4-byte) alignment. This means that the memory address is organized in

blocks of 4 bytes. Therefore, the ﬁrst byte of every PTD and the ﬁrst byte of every

payload data are located at an address which is a multiple of 4. Figure 28 illustrates

an example in which the ﬁrst payload data is 14 bytes long, meaning that the last byte

of the payload data is at the location 15H. The next addresses (16H and 17H) are not

multiples of 4. Therefore, the ﬁrst byte of the next PTD will be located at the next

multiple-of-four address, 18H.

Fig 27. Buffer RAM data organization.

MGT952

PTD of OUT transfer

RAM buffer

payload data of OUT transfer

PTD of IN transfer

empty space for IN total data

PTD of OUT transfer

payload data of OUT transfer

top

bottom

000H

7FFH

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 32 of 134

9.4.3 Operation and C program example

Figure 29 shows the block diagram for internal FIFO buffer RAM operations in PIO

mode. The ISP1161A provides one register as the access port for each buffer RAM.

For the ITL buffer RAM, the access port is the ITLBufferPort register (40H - read, C0H

- write). For the ATL buffer RAM, the access port is the ATLBufferPort register (41H -

read, C1H - write). The buffer RAM is an array of bytes (8 bits) while the access port

is a 16-bit register. Therefore, each read/write operation on the port accesses two

consecutive memory locations, incrementing the pointer of the internal buffer RAM by

two. The lower byte of the access port register corresponds to the data byte at the

even location of the buffer RAM, and the upper byte corresponds to the next data

byte at the odd location of the buffer RAM. Regardless of the number of data bytes to

be transferred, the command code must be issued merely once, and it will be

followed by a number of accesses of the data port (see Section 8.4).

When the pointer of the buffer RAM reaches the value of the HcTransferCounter

HcµPinterrupt register and update the HcBufferStatus register, to indicate that the

whole data transfer has been completed.

For ITL buffer RAM, every Start Of Frame (SOF) signal (1 ms) will cause toggling

between ITL0 and ITL1, but this depends on the buffer status. If both ITL0BufferFull

and ITL1BufferFull of the HcBufferStatus register are already logic 1, meaning that

both ITL0 and ITL1 buffer RAMs are full, the toggling will not happen. In this case, the

microprocessor will always have access to ITL1.

Fig 28. PTD data with DWORD alignment in buffer RAM.

MGT953

payload data

(14 bytes)

PTD

(8 bytes)

PTD

(8 bytes)

00Htop

08H

15H

18H

20H

payload data

RAM buffer

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 33 of 134

Following is an example of a C program that shows how to write data into the ATL

buffer RAM. The total number of data bytes to be transferred is 80 (decimal) which

will be set into the HcTransferCounter register as 50H. The data consists of four types

of PTD data:

1. The ﬁrst PTD header (IN) is 8 bytes, followed by 16 bytes of space reserved for

its payload data;

2. The second PTD header (IN) is also 8 bytes, followed by 8 bytes of space

reserved for its payload data;

3. The third PTD header (OUT) is 8 bytes, followed by 16 bytes of payload data with

values beginning from 0H to FH incrementing by 1;

4. The fourth PTD header (OUT) is also 8 bytes, followed by 8 bytes of payload data

with values beginning from 0H to EH incrementing by 2.

In all PTDs, we have assigned device address as 5 and endpoint as 1. ActualBytes is

always zero (0). TotalBytes equals the number of payload data bytes transferred,

however, note that for bulk and control transfers, TotalBytes can be greater than

MaxPacketSize.

Ta b l e 6 shows the results after running this program.

Fig 29. PIO access to internal FIFO buffer RAM.

MGT951

Commands

Pointer

automatically

increments by 2

TransferCounter

BufferStatus

internal EOT

ITLBufferPort

ATLBufferPort

ATL buffer RAM

(8-bit width)

Control registers

Command register

data port

EOT

toggle

command port

µPInterrupt

22H/A2H

2CH

40H/C0H

41H/C1H

24H/A4H

000H

7FFH

001H

ITL1 buffer RAM

(8-bit width)

000H

3FFH

001H

ITL0 buffer RAM

(8-bit width)

000H

3FFH

001H

Host bus I/F

(16-bit width)

SOF

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 34 of 134

However, if communication with a peripheral USB device is desired, the device should

be connected to the downstream port and pass enumeration.

// The example program for writing ATL buffer RAM

#include <conio.h>

#include <stdio.h>

#include <dos.h>

// Define register commands

#define wHcTransferCounter 0x22

#define wHcuPInterrupt 0x24

#define wHcATLBufferLength 0x2b

#define wHcBufferStatus 0x2c

// Define I/O Port Address for HC

#define HcDataPort 0x290

#define HcCmdPort 0x292

// Declare external functions to be used

unsigned int HcRegRead(unsigned int wIndex);

void HcRegWrite(unsigned int wIndex,unsigned int wValue);

void main(void)

{

unsigned int i;

unsigned int wCount,wData;

// Prepare PTD data to be written into HC ATL buffer RAM:

unsigned int PTDData[0x28]=

{

0x0800,0x1010,0x0810,0x0005, // PTD header for IN token #1

// Reserved space for payload data of IN token #1

0x0000,0x0000,0x0000,0x0000, 0x0000,0x0000,0x0000,0x0000,

0x0800,0x1008,0x0808,0x0005, // PTD header for IN token #2

// Reserved space for payload data of IN token #2

0x0000,0x0000,0x0000,0x0000,

0x0800,0x1010,0x0410,0x0005, // PTD header for OUT token #1

0x0100,0x0302,0x0504,0x0706, // Payload data for OUT token #1

0x0908,0x0b0a,0x0d0c,0x0f0e,

0x0800,0x1808,0x0408,0x0005, // PTD header for OUT token #2

0x0200,0x0604,0x0a08,0x0e0c // Payload data for OUT token #2

};

HcRegWrite(wHcuPInterrupt,0x04); // Clear EOT interrupt bit

// HcRegWrite(wHcITLBufferLength,0x0);

HcRegWrite(wHcATLBufferLength,0x1000); // RAM full use for ATL

// Set the number of bytes to be transferred

HcRegWrite(wHcTransferCounter,0x50);

wCount = 0x28; // Get word count outport

(HcCmdPort,0x00c1); // Command for ATL buffer write

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 35 of 134

// Write 80 (0x50) bytes of data into ATL buffer RAM

for (i=0;i<wCount;i++)

{

outport(HcDataPort,PTDData[i]);

};

// Check EOT interrupt bit

wData = HcRegRead(wHcuPInterrupt);

printf("\n HC Interrupt Status = %xH.\n",wData);

// Check Buffer status register

wData = HcRegRead(wHcBufferStatus);

printf("\n HC Buffer Status = %xH.\n",wData);

}

// Read HC 16-bit registers

unsigned int HcRegRead(unsigned int wIndex)

{ unsigned int wValue;

outport(HcCmdPort,wIndex & 0x7f);

wValue = inport(HcDataPort);

return(wValue);

}

// Write HC 16-bit registers

void HcRegWrite(unsigned int wIndex,unsigned int wValue)

{

outport(HcCmdPort,wIndex | 0x80);

outport(HcDataPort,wValue);

}

9.5 HC operational model

Upon power-up, the HCD initializes all operational registers (32-bit). The

FSLargestDataPacket ﬁeld (bits 30 to 16) of the HcFmInterval register (0DH - read,

8DH - write) and the HcLSThreshold register (11H - read, 91H - write) determine the

Table 6: Run results of the C program example

Observed items HC not initialized and not in

USBOperational state

HC initialized and in

USBOperational state

Comments

HcµPinterrupt register

Bit 1 (ATLInt) 0 1 microprocessor must read ATL

Bit 2 (AllEOTInterrupt) 1 1 transfer completed

HcBufferStatus register

Bit 2 (ATLBufferFull) 1 1 transfer completed

Bit 5 (ATLBufferDone) 0 1 PTD data processed by HC

USB Trafﬁc on USB Bus No Yes OUT packets can be seen

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 36 of 134

end of the frame for full-speed and low-speed packets. By programming these ﬁelds,

the effective USB bus usage can be changed. Furthermore, the size of the ITL buffers

(HcITLBufferLength, 2AH - read, AAH - write) is programmed.

In the case when a USB frame contains both ISO and AT packets, two interrupts will

be generated per frame.

One interrupt is issued concurrently with the SOF. This interrupt (the ITLint bit is set in

the HcµPInterrupt register) triggers reading and writing of the ITL buffer by the

microprocessor, after which the interrupt is cleared by the microprocessor.

Next the programmable ATL Interrupt (the ATLint bit is set in the HcµPInterrupt

microprocessor, after which the interrupt is cleared by the microprocessor. If the

microprocessor cannot handle the ISO interrupt before the next ISO interrupt,

disrupted ISO trafﬁc can result.

To be able to send more than one packet to the same Control or Bulk endpoint in the

same frame, an Active bit and a TotalBytes ﬁeld are introduced (see Ta b l e 5 ). The

Active bit is cleared only if all data of the Philips Transfer Descriptor (PTD) has been

transferred or if a transaction at that endpoint contained a fatal error. If all PTDs of the

ATL are serviced, and the frame is not over yet, the HC starts looking for a PTD with

the Active bit still set. If such a PTD is found and there is still enough time in this

frame, another transaction is started on the USB bus for this endpoint.

For ISO processing, the HCD also has to take care of the HCBufferStatus register

(2CH, read only) for the ITL buffer RAM operations. After the HCD writes ISO data

into ITL buffer RAM, the ITL0BufferFull or ITL1BufferFull bit (depends if it is ITL0 or

ITL1) will be set to logic 1.

After the HC processes the ISO data in the ITL buffer RAM, the corresponding

ITL0BufferDone or ITL1BufferDone bit will automatically be set to logic 1.The HCD

can clear the buffer status bits by a read of the ITL buffer RAM. This must be done

within the 1 ms frame from which the ITL0BufferDone or ITL1BufferDone was set.

For example, the HCD writes ISO_A data into the ITL0 buffer in the ﬁrst frame. This

will cause the HCBufferStatus register to show that the ITL0 buffer is full by setting

the ITL0BufferFull bit to logic 1. At this stage the HCD cannot write ISO data into the

ITL0 buffer RAM again.

In the second frame, the HC will process the ISO-A data in the ITL0 buffer. At the

same time, the HCD can write ISO-B data into ITL1 buffer. When the next SOF

comes (the beginning of the third frame), both the ITL1BufferFull and ITL0BufferDone

are automatically set to logic 1.

In the third frame the HCD has to read at least two bytes (one word) of the ITL0 buffer

to clear both the ITL0BufferFull and ITL0BufferDone bits. If both are not cleared,

when the next SOF comes (the beginning of the fourth frame) the ITL0BufferDone

and ITL0BufferFull bits will be cleared automatically. This also applies to the ITL1

buffer because the ITL0 and ITL1 are Ping-Pong structured buffers. To recover from

this state, a power-on reset or software reset will have to be applied.

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 37 of 134

9.5.1 Time domain behavior

In example 1 (Figure 30), the microprocessor is fast enough to read back and

download a scenario before the next interrupt. Note that on the ISO interrupt of

frame N:

•The ISO packet for frame N + 1 will be written

•The AT packet for frame N + 1 will be written.

In example 2 (Figure 31), the microprocessor is still busy transferring the AT data

when the ISO interrupt of the next frame (N + 1) is raised. As a result, there will be no

AT trafﬁc in frame N + 1. The HC does not raise an AT interrupt in frame N + 1. The

AT part is simply postponed until frame N + 2. On the AT N + 2 interrupt, the transfer

mechanism is back to normal operation. This simple mechanism ensures, among

other things, that Control transfers are not dropped systematically from the USB in

case of an overloaded microprocessor.

In example 3 (Figure 32), the ISO part is still being written while the Start of Frame

(SOF) of the next frame has occurred. This will result in undeﬁned behavior for the

ISO data on the USB bus in frame N + 1 (depending on if the exact timing data is

corrupted or not). The HC should not raise an AT interrupt in frame N + 1.

Fig 30. HC time domain behavior: example 1.

MGT954

(frame N) (frame N + 1) (frame N + 2) (frame N + 3)

read ISO_A(N − 1) write ISO_A(N + 1)

SOF

read AT(N) write AT(N + 1)

interrupt

traffic

on USB

ISO

interrupt

Fig 31. HC time domain behavior: example 2.

MGT955

(frame N) (frame N + 1) (frame N + 2) (frame N + 3)

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 38 of 134

9.5.2 Control transaction limitations

The different phases of a Control transfer (SETUP, Data and Status) should never be

put in the same ATL.

9.6 Microprocessor loading

The maximum amount of data that can be transferred for an endpoint during one

frame is 1023 bytes. The number of USB packets that are needed for this batch of

data depends on the maximum packet size that is speciﬁed.

The HCD has to schedule the transactions in a frame. On the other hand, the HCD

must have the ability to handle the interrupts coming from the HC every 1 ms. It must

also be able to do the scheduling for the next frame, reading the frame information

from and writing the next frame information to the buffer RAM in the time between the

end of the current frame and the start of the next frame.

9.7 Internal pull-down resistors for downstream ports

There are four internal 15 kΩ pull-down resistors built into the ISP1161A for the two

downstream ports: two resistors for each port. These resistors are software

selectable by programming bit 12 (2_DownstreamPort15K resistorsel) of the

HcHardwareConﬁguration register (20H - read, A0H - write). When bit 12 is logic 0,

external 15 kΩ pull-down resistors are used. If bit 12 is set to logic 1, the internal

15 kΩ pull-down resistors are used. See Figure 33.

This feature is a cost-saving option. However, the power-on reset default value of

bit 12 is logic 0. If using the internal resistors, the HCD must set this bit status after

every reset, because a reset action (hardware or software) will clear this bit.

Fig 32. HC time domain behavior: example 3.

MGT956

(frame N) (frame N + 1) (frame N + 2) (frame N + 3)

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 39 of 134

9.8 OC detection and power switching control

A downstream port provides 5 V power supply to VBUS. The ISP1161A has built-in

hardware functions to monitor the downstream ports loading conditions and control

their power switching. These hardware functions are implemented by the internal

power switching control circuit and overcurrent detection circuit. H_PSW1 and

H_PSW2 are power switching control output pins (active LOW, open drain) for

downstream port 1 and 2, respectively. H_OC1 and H_OC2 are overcurrent detection

input pins for downstream ports 1 and 2, respectively.

Figure 34 shows the ISP1161A downstream port power management scheme

(‘n’ represents the downstream port numbers, n=1or2).

Using either internal or external 15 kΩ resistors.

Fig 33. Use of 15 kΩ pull-down resistors on downstream ports.

004aaa088

22 Ω

bit 12

HcHardware

Configuration

ISP1161A

USB

connector

D−

D+

VBUS

internal

15 kΩ

(2×)

external

15 kΩ

(2×)

47 pF

(2×)

‘n’ represents the downstream port number (n=1or2)

Fig 34. Downstream port power management scheme.

004aaa089

≥

0Reg

bit 10

PSW

OC select

OC detect

regulator

H_OCn

H_PSWn

HC CORE

C/L

ISP1161A

VCC

(+5 V or +3.3 V) HcHardware

Configuration

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 40 of 134

9.8.1 Using an internal OC detection circuit

The internal OC detection circuit can be used only when VCC (pin 56) is connected to

a 5 V power supply. The HCD must set AnalogOCEnable, bit 10 of the

HcHardwareConﬁguration register, to logic 1.

An application using the internal OC detection circuit and internal 15 kΩ pull-down

resistors is shown in Figure 35. In this example, the HCD must set both

AnalogOCEnable and DownstreamPort15KresistorSel to logic 1. They are bit 10 and

bit 12 of the HcHardwareConﬁguration register, respectively.

When H_OCn detects an overcurrent status on a downstream port, H_PSWn will

output HIGH, logic 1 to turn off the 5 V power supply to the downstream port VBUS.

When there is no such condition, H_PSWn will output LOW, logic 0 to turn on the 5 V

power supply to the downstream port VBUS.

In general applications, a P-channel MOSFET can be used as the power switch for

VBUS. Connect the 5 V power supply to the source of the P-channel MOSFET, VBUS to

the drain, and H_PSWn to the gate. Call the voltage drop across the drain and source

the overcurrent detection voltage (VOC). For the internal overcurrent detection circuit,

a voltage comparator has been incorporated with a nominal voltage threshold (∆Vtrip)

of 75 mV. When VOC exceeds Vtrip, H_PSWn will output a HIGH level, logic 1 to turn

off the P-channel MOSFET. If the P-channel MOSFET has a RDSon of 150 mΩ, the

overcurrent threshold will be 500 mA. The selection of a P-channel MOSFET with a

different RDSon will result in a different overcurrent threshold.

‘n’ represents the downstream port number (n=1or2)

Fig 35. Using internal OC detection circuit.

004aaa090

ATX

≥

0Reg

PSW

OC select

OC detect

regulator

VCC

H_OCn

∆V = +5 V − VBUS

H_PSWn

H_DMn

H_DPn

HC CORE

C/L

SIE

USB

downstream

port

connector

15 kΩ

(2×)

47 pF

(2×)

22 Ω

ISP1161A

VBUS

+5 V

P-Ch

MOSFET

bit 10

bit 12 HcHardware

Configuration

HcHardware

Configuration

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 41 of 134

9.8.2 Using an external OC detection circuit

When VCC (pin 56) is connected to a 3.3 V instead of the 5 V power supply, the

internal OC detection circuit cannot be used. An external OC detection circuit must be

used instead. Regardless of the VCC value, an external OC detection circuit can

always be used. To use an external OC detection circuit, AnalogOCEnable, bit 10 of

the HcHardwareConﬁguration register, must be logic 0. By default after reset, this bit

is already logic 0; therefore, the HCD does not need to clear this bit.

Figure 36 shows how to use an external OC detection circuit.

9.9 Suspend and wake-up

9.9.1 HC suspended state

The HC can be put into suspended state by setting the HcControl register (01H -

read, 81H - write). See Figure 23 for the HC’s ﬂow of USB state changes.

‘n’ represents the downstream port number (n=1or2)

Fig 36. Using an external OC detection circuit.

VoVi

VCC

H_OCn

H_PSWn

H_DMn

H_DPn

USB

downstream

port

connector

47 pF

(2×)

22 Ω

VBUS

+3.3 V or +5 V

+5 V

external

OC detect

004aaa091

ATX

≥

0Reg

PSW

OC select

OC detect

regulator

HC CORE

C/L

SIE

15 kΩ

(2×)ISP1161A

bit 10

bit 12 HcHardware

Configuration

HcHardware

Configuration

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 42 of 134

In suspended state, the device will consume considerably less power by turning off

the internal 48 MHz clock, PLL and crystal, and setting the internal regulator to

power-down mode. The ISP1161A suspend and resume clock scheme is shown in

Figure 37.

Remark: The ISP1161A can only be put into a fully suspended state only after both

the HC and the DC go into suspend state. At this point, the crystal can be turned off

and the internal regulator can be put into power-down mode.

Pin H_SUSPEND is the sensing output pin for HC’s suspended state. When the HC

goes into USBSuspend state, this pin will output a HIGH level (logic 1). This pin is

cleared to LOW (logic 0) level only when the HC is put into a USBReset state or

USBOperational state (refer to the HcControl register bits 7 to 6, 01H - read, 81H -

write). Bit 11, SuspendClkNotStop, of the HcHardwareConﬁguration register (20H -

read, A0H - write), deﬁnes if the HC internal clock is stopped or kept running when

the HC goes into USBSuspend state. After the HC enters the USBSuspend state for

1.3 ms, the internal clock will be stopped if bit SuspendClkNotStop is logic 0.

9.9.2 HC wake-up from suspended state

There are three methods to wake up the HC from the USBSuspend state: hardware

wake-up, software wake-up, and USB bus resume.

They are described as follows:

•Wake-up by pin H_WAKEUP

Pins H_SUSPEND and H_WAKEUP provide a method of remote wake-up control

for the HC without the need to access the HC internal registers. H_WAKEUP is an

external wake-up control input pin for the HC. After the HC goes into USBSuspend

state, it can be woken up by sending a HIGH level pulse to pin H_WAKEUP. This

will turn on the HC’s internal clock, and set bit 6, ClkReady, of the HcµPInterrupt

Fig 37. ISP1161A suspend and resume clock scheme.

MGT958

XOSC_6MHz

(to DC PLL)

XOSC

VOLTAGE

REGULATOR

HC PLL

HC_ClkOk

HC_RawClk48M

HC_EnableClock

H_Wakeup (pin)

DC_EnableClock

CS (pin)

HC_NeedClock

PLL_Lock

PLL_ClkOut

DIGITAL

CLOCK

SWITCH

CORE

HC_Clk48MOut

HcHardware Configuration

bit 11 (SuspendClkNotStop)

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 43 of 134

Under the USBSuspend state, once pin H_WAKEUP goes HIGH, after 160 µs, the

internal clock will be up. If pin H_WAKEUP continues to be HIGH, then the internal

clock will be kept running, and the microprocessor can set the HC into

USBOperational state during this time.

If H_WAKEUP goes LOW for more than 1.14 ms, the internal clock stops, and the

HC goes back into USBSuspend state.

•Wake-up by pin CS (software wake-up)

During the USBSuspend state, an external microprocessor issues a chip select

signal through pin CS. This method of access to ISP1161A internal registers is a

software wake-up.

•Wake-up by USB devices

For a USB bus resume, a USB device attached to the root hub port issues a

resume signal to the HC through the USB bus, switching the HC from

USBSuspend state to USBResume state. This will also set the ResumeDetected

bit of the HcInterruptStatus register (03H - read, 83H - write).

No matter which method is used to wake up the HC from USBSuspend state, the

corresponding interrupt bits must be enabled before the HC goes into USBSuspend

state so that the microprocessor can receive the correct interrupt request to wake up

the HC.

10. HC registers

The HC contains a set of on-chip control registers. These registers can be read or

written by the Host Controller Driver (HCD). The Control and Status register sets,

Frame Counter register sets, and Root Hub register sets are grouped under the

category of HC Operational registers (32 bits). These operational registers are made

compatible to OpenHCI (Host Controller Interface) Operational registers. This allows

the OpenHCI HCD to be easily ported to ISP1161A.

Reserved bits may be deﬁned in future releases of this speciﬁcation. To ensure

interoperability, the HCD must not assume that a reserved ﬁeld contains logic 0.

Furthermore, the HCD must always preserve the values of the reserved ﬁeld. When a

R/W register is modiﬁed, the HCD must ﬁrst read the register, modify the bits desired,

and then write the register with the reserved bits still containing the original value.

Alternatively, the HCD can maintain an in-memory copy of previously written values

that can be modiﬁed and then written to the HC register. When a ‘write to set’ or ‘clear

the register’ is performed, bits written to reserved ﬁelds must be logic 0.

As shown in Ta bl e 7 , the addresses (the commands for accessing registers) of these

32-bit Operational registers are similar the offsets deﬁned in the OHCI speciﬁcation

with the addresses being equal to offset divided by 4.

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 44 of 134

10.1 HC control and status registers

10.1.1 HcRevision register (R: 00H)

Code (Hex): 00 — read only

Table 7: HC registers summary

Address (Hex) Register Width Reference Functionality

read write

00 - HcRevision 32 Section 10.1.1 on page 44 HC Control and Status registers

01 81 HcControl 32 Section 10.1.2 on page 45

02 82 HcCommandStatus 32 Section 10.1.3 on page 46

03 83 HcInterruptStatus 32 Section 10.1.4 on page 48

04 84 HcInterruptEnable 32 Section 10.1.5 on page 49

05 85 HcInterruptDisable 32 Section 10.1.6 on page 50

0D 8D HcFmInterval 32 Section 10.2.1 on page 52 HC Frame Counter registers

0E - HcFmRemaining 32 Section 10.2.2 on page 53

0F - HcFmNumber 32 Section 10.2.3 on page 53

11 91 HcLSThreshold 32 Section 10.2.4 on page 54

12 92 HcRhDescriptorA 32 Section 10.3.1 on page 56 HC Root Hub registers

13 93 HcRhDescriptorB 32 Section 10.3.2 on page 57

14 94 HcRhStatus 32 Section 10.3.3 on page 59

15 95 HcRhPortStatus[1] 32 Section 10.3.4 on page 61

16 96 HcRhPortStatus[2] 32 Section 10.3.4 on page 61

20 A0 HcHardwareConﬁguration 16 Section 10.4.1 on page 65 HC DMA and Interrupt Control

registers

21 A1 HcDMAConﬁguration 16 Section 10.4.2 on page 66

22 A2 HcTransferCounter 16 Section 10.4.3 on page 67

24 A4 HcµPInterrupt 16 Section 10.4.4 on page 68

25 A5 HcµPInterruptEnable 16 Section 10.4.5 on page 69

27 - HcChipID 16 Section 10.5.1 on page 70 HC Miscellaneous registers

28 A8 HcScratch 16 Section 10.5.2 on page 71

- A9 HcSoftwareReset 16 Section 10.5.3 on page 71

2A AA HcITLBufferLength 16 Section 10.6.1 on page 72 HC Buffer RAM Control registers

2B AB HcATLBufferLength 16 Section 10.6.2 on page 72

2C - HcBufferStatus 16 Section 10.6.3 on page 73

2D - HcReadBackITL0Length 16 Section 10.6.4 on page 74

2E - HcReadBackITL1Length 16 Section 10.6.5 on page 74

40 C0 HcITLBufferPort 16 Section 10.6.6 on page 75

41 C1 HcATLBufferPort 16 Section 10.6.7 on page 75

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 45 of 134

10.1.2 HcControl register (R/W: 01H/81H)

The HcControl register deﬁnes the operating modes for the HC.

RemoteWakeupEnable (RWE) is modiﬁed only by the HCD.

Code (Hex): 01 — read

Code (Hex): 81 — write

Table 8: HcRevision register: bit allocation

Bit 31 30 29 28 27 26 25 24

Symbol reserved

Reset 00000000

Access RRRRRRRR

Bit 23 22 21 20 19 18 17 16

Symbol reserved

Reset 00000000

Access RRRRRRRR

Bit 15 14 13 12 11 10 9 8

Symbol reserved

Reset 00000000

Access RRRRRRRR

Bit 76543210

Symbol REV[7:0]

Reset 00010000

Access RRRRRRRR

Table 9: HcRevision register: bit description

Bit Symbol Description

31 to 8 −Reserved

7 to 0 REV[7:0] Revision: This read-only ﬁeld contains the BCD representation of

the version of the HCI speciﬁcation that is implemented by this HC.

For example, a value of 11H corresponds to version 1.1. All HC

implementations that are compliant with this speciﬁcation will have

a value of 10H.

Table 10: HcControl register: bit allocation

Bit 31 30 29 28 27 26 25 24

Symbol reserved

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 23 22 21 20 19 18 17 16

Symbol reserved

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 46 of 134

10.1.3 HcCommandStatus register (R/W: 02H/82H)

The HcCommandStatus register is used by the HC to receive commands issued by

the HCD, and it also reﬂects the HC’s current status. To the HCD, it appears to be a

‘write to set’ register. The HC must ensure that bits written as logic 1 become set in

Bit 15 14 13 12 11 10 9 8

Symbol reserved RWE RWC reserved

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 76543210

Symbol HCFS[1:0] reserved

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Table 11: HcControl register: bit description

Bit Symbol Description

31 to 11 - reserved

10 RWE RemoteWakeupEnable: This bit is used by the HCD to enable or

disable the remote wake-up feature upon the detection of

upstream resume signaling. When this bit is set and the

ResumeDetected bit in HcInterruptStatus is set, a remote wake-up

is signaled to the host system. Setting this bit has no impact on the

generation of hardware interrupt.

9RWCRemoteWakeupConnected: This bit indicates whether the HC

supports remote wake-up signaling. If remote wake-up is

supported and used by the system, it is the responsibility of

system ﬁrmware to set this bit during POST. The HC clears the bit

upon a hardware reset but does not alter it upon a software reset.

Remote wake-up signaling of the host system is host-bus-speciﬁc,

and is not described in this speciﬁcation.

8 - reserved

7 to 6 HCFS HostControllerFunctionalState for USB:

00B — USBReset

01B — USBResume

10B — USBOperational

11B — USBSuspend

A transition to USBOperational from another state causes

start-of-frame (SOF) generation to begin 1 ms later. The HCD

determines whether the HC has begun sending SOFs by reading

the StartofFrame ﬁeld of HcInterruptStatus.

This ﬁeld can be changed by the HC only when in the

USBSuspend state. The HC can move from the USBSuspend

state to the USBResume state after detecting the resume signaling

from a downstream port.

The HC enters USBReset after a software reset and a hardware

reset. The latter also resets the Root Hub and asserts subsequent

reset signaling to downstream ports.

5 to 0 - reserved

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Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 47 of 134

the register while bits written as logic 0 remain unchanged in the register. The HCD

may issue multiple distinct commands to the HC without concern for corrupting

previously issued commands. The HCD has normal read access to all bits.

The SchedulingOverrunCount ﬁeld indicates the number of frames with which the HC

has detected the scheduling overrun error. This occurs when the Periodic list does

not complete before EOF. When a scheduling overrun error is detected, the HC

increments the counter and sets the SchedulingOverrun ﬁeld in the HcInterruptStatus

Code (Hex): 02 — read

Code (Hex): 82 — write

Table 12: HcCommandStatus register: bit allocation

Bit 31 30 29 28 27 26 25 24

Symbol reserved

Reset 00000000

Access RRRRRRRR

Bit 23 22 21 20 19 18 17 16

Symbol reserved SOC[1:0]

Reset 00000000

Access RRRRRRRR

Bit 15 14 13 12 11 10 9 8

Symbol reserved

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 76543210

Symbol reserved HCR

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

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Full-speed USB single-chip host and device controller

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10.1.4 HcInterruptStatus register (R/W: 03H/83H)

This register provides the status of the events that cause hardware interrupts. When

an event occurs, the HC sets the corresponding bit in this register. When a bit is set, a

hardware interrupt is generated if the interrupt is enabled in the HcInterruptEnable

clear individual bits in this register by writing logic 1 to the bit positions to be cleared,

but cannot set any of these bits. Conversely, the HC can set bits in this register, but

cannot clear the bits.

Code (Hex): 03 — read

Code (Hex): 83 — write

Table 13: HcCommandStatus register: bit description

Bit Symbol Description

31 to 18 - reserved

17 to 16 SOC[1:0] SchedulingOverrunCount: The ﬁeld is incremented on each

scheduling overrun error. It is initialized to 00B and wraps around

at 11B. It will be incremented when a scheduling overrun is

detected even if SchedulingOverrun in HcInterruptStatus has

already been set. This is used by HCD to monitor any persistent

scheduling problems.

15 to 1 - reserved

0 HCR HostControllerReset: This bit is set by the HCD to initiate a

software reset of the HC. Regardless of the functional state of HC,

it moves to the USBSuspend state in which most of the operational

registers are reset, except those stated otherwise, and no Host

bus accesses are allowed. This bit is cleared by HC upon the

completion of the reset operation. The reset operation must be

completed within 10 µs. This bit, when set, does not cause a reset

to the Root Hub and no subsequent reset signaling will be

asserted to its downstream ports.

Table 14: HcInteruptStatus register: bit allocation

Bit 31 30 29 28 27 26 25 24

Symbol reserved

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 23 22 21 20 19 18 17 16

Symbol reserved

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 15 14 13 12 11 10 9 8

Symbol reserved

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

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Full-speed USB single-chip host and device controller

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10.1.5 HcInterruptEnable register (R/W: 04H/84H)

Each enable bit in the HcInterruptEnable register corresponds to an associated

interrupt bit in the HcInterruptStatus register. The HcInterruptEnable register is used

to control which events generate a hardware interrupt. A hardware interrupt is

requested on the host bus when three conditions occur:

•A bit is set in the HcInterruptStatus register

•The corresponding bit in the HcInterruptEnable register is set

•The MasterInterruptEnable bit is set.

Writing logic 1 to a bit in this register sets the corresponding bit, whereas writing

logic 0 to a bit in this register leaves the corresponding bit unchanged. On a read, the

current value of this register is returned.

Code (Hex): 04 — read

Code (Hex): 84 — write

Bit 76543210

Symbol reserved RHSC FNO UE RD SF reserved SO

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Table 15: HcInterruptStatus register: bit description

Bit Symbol Description

31 to 7 reserved

6 RHSC RootHubStatusChange: This bit is set when the content of

HcRhStatus or the content of any of HcRhPortStatus[1:2] has

changed.

5 FNO FrameNumberOverﬂow: This bit is set when the MSB of

HcFmNumber (bit 15) changes value.

4UEUnrecoverableError: This bit is set when the HC detects a

system error not related to USB. The HC does not proceed with

any processing nor signaling before the system error has been

corrected. The HCD clears this bit after the HC has been reset.

OHCI: Always set to logic 0.

3RDResumeDetected: This bit is set when the HC detects that a

device on the USB is asserting resume signaling from a state of no

resume signaling. This bit is not set when HCD enters the

USBResume state.

2SFStartofFrame: At the start of each frame, this bit is set by the HC

and an SOF is generated.

1 - reserved

0SOSchedulingOverrun: This bit is set when the USB schedules for

current frame overruns. A scheduling overrun will also cause the

SchedulingOverrunCount of HcCommandStatus to be

incremented.

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Full-speed USB single-chip host and device controller

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10.1.6 HcInterruptDisable register (R/W: 05H/85H)

Each disable bit in the HcInterruptDisable register corresponds to an associated

interrupt bit in the HcInterruptStatus register. The HcInterruptDisable register is

coupled with the HcInterruptEnable register. Thus, writing logic 1 to a bit in this

Table 16: HcInterruptEnable register: bit allocation

Bit 31 30 29 28 27 26 25 24

Symbol MIE reserved

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 23 22 21 20 19 18 17 16

Symbol reserved

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 15 14 13 12 11 10 9 8

Symbol reserved

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 76543210

Symbol reserved RHSC FNO UE RD SF reserved SO

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Table 17: HcInterruptEnable register: bit description

Bit Symbol Description

31 MIE MasterInterruptEnable by the HCD: Logic 0 is ignored by the HC.

Logic 1 enables interrupt generation by events speciﬁed in other

bits of this register.

30 to 7 - reserved

6 RHSC 0 — ignore

1 — enable interrupt generation due to Root Hub Status Change

5 FNO 0 — ignore

1 — enable interrupt generation due to Frame Number Overﬂow

4UE0 — ignore

1 — enable interrupt generation due to Unrecoverable Error

3RD0 — ignore

1 — enable interrupt generation due to Resume Detect

2SF0 — ignore

1 — enable interrupt generation due to Start of Frame

1 - reserved

0SO0 — ignore

1 — enable interrupt generation due to Scheduling Overrun

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 51 of 134

writing logic 0 to a bit in this register leaves the corresponding bit in the

HcInterruptEnable register unchanged. On a read, the current value of the

HcInterruptEnable register is returned.

Code (Hex): 05 — read

Code (Hex): 85 — write

Table 18: HcInterruptDisable register: bit allocation

Bit 31 30 29 28 27 26 25 24

Symbol MIE reserved

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 23 22 21 20 19 18 17 16

Symbol reserved

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 15 14 13 12 11 10 9 8

Symbol reserved

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 76543210

Symbol reserved RHSC FNO UE RD SF reserved SO

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Table 19: HcInterruptDisable register: bit description

Bit Symbol Description

31 MIE Logic 0 is ignored by the HC. Logic 1 disables interrupt generation

due to events speciﬁed in other bits of this register. This bit is set

after a hardware or software reset.

30 to 7 - reserved

6 RHSC 0 — ignore

1 — disable interrupt generation due to Root Hub Status Change

5 FNO 0 — ignore

1 — disable interrupt generation due to Frame Number Overﬂow

4UE0 — ignore

1 — disable interrupt generation due to Unrecoverable Error

3RD0 — ignore

1 — disable interrupt generation due to Resume Detect

2SF0 — ignore

1 — disable interrupt generation due to Start of Frame

1 - reserved

0SO0 — ignore

1 — disable interrupt generation due to Scheduling Overrun

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 52 of 134

10.2 HC frame counter registers

10.2.1 HcFmInterval register (R/W: 0DH/8DH)

The HcFmInterval register contains a 14-bit value which indicates the bit time interval

in a frame (that is, between two consecutive SOFs), and a 15-bit value indicating the

full-speed maximum packet size that the HC may transmit or receive without causing

a scheduling overrun. The HCD may carry out minor adjustments on the

FrameInterval by writing a new value at each SOF. This allows the HC to synchronize

with an external clock source and to adjust any unknown clock offset.

Code (Hex): 0D — read

Code (Hex): 8D — write

Table 20: HcFmInterval register: bit allocation

Bit 31 30 29 28 27 26 25 24

Symbol FIT FSMPS[14:8]

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 23 22 21 20 19 18 17 16

Symbol FSMPS[7:0]

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 15 14 13 12 11 10 9 8

Symbol reserved FI[13:8]

Reset 00101110

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 76543210

Symbol FI[7:0]

Reset 11011111

Access R/W R/W R/W R/W R/W R/W R/W R/W

Table 21: HcFmInterval register: bit description

Bit Symbol Description

31 FIT FrameIntervalToggle: The HCD toggles this bit whenever it loads

a new value to FrameInterval.

30 to 16 FSMPS

[14:0]

FSLargestDataPacket (FSMaximumPacketSize): Speciﬁes a

value which is loaded into the Largest Data Packet Counter at the

beginning of each frame. The counter value represents the largest

amount of data in bits which can be sent or received by the HC in a

single transaction at any given time without causing a scheduling

overrun. The ﬁeld value is calculated by the HCD.

15 to 14 - reserved

13 to 0 FI[13:0] FrameInterval: Speciﬁes the interval between two consecutive

SOFs in bit times. The default value is 11999. The HCD must save

the current value of this ﬁeld before resetting the HC. Setting the

HostControllerReset of the HcCommandStatus register will cause

the HC to reset this ﬁeld to its default value. HCD may choose to

restore the saved value upon completing the Reset sequence.

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Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 53 of 134

10.2.2 HcFmRemaining register (R: 0EH)

The HcFmRemaining register is a 14-bit down counter showing the bit time remaining

in the current frame.

Code (Hex): 0E — read

10.2.3 HcFmNumber register (R: 0FH)

The HcFmNumber register is a 16-bit counter. It provides a timing reference for

events happening in the HC and the HCD. The HCD may use the 16-bit value

speciﬁed in this register and generate a 32-bit frame number without requiring

frequent access to the register.

Code (Hex): 0F — read

Table 22: HcFmRemaining register: bit allocation

Bit 31 30 29 28 27 26 25 24

Symbol FRT reserved

Reset 00000000

Access RRRRRRRR

Bit 23 22 21 20 19 18 17 16

Symbol reserved

Reset 00000000

Access RRRRRRRR

Bit 15 14 13 12 11 10 9 8

Symbol reserved FR[13:8]

Reset 00000000

Access RRRRRRRR

Bit 76543210

Symbol FR[7:0]

Reset 00000000

Access RRRRRRRR

Table 23: HcFmRemaining register: bit description

Bit Symbol Description

31 FRT FrameRemainingToggle: This bit is loaded from the

FrameIntervalToggle ﬁeld of the HcFmInterval register whenever

FrameRemaining reaches 0. This bit is used by the HCD for

synchronization between FrameInterval and FrameRemaining.

30 to 14 - reserved

13 to 0 FR[13:0] FrameRemaining: This counter is decremented at each bit time.

When it reaches zero, it is reset by loading the FrameInterval value

speciﬁed in the HcFmInterval register at the next bit time boundary.

When entering the USBOperational state, the HC reloads it with

the content of the FrameInterval part of the HcFmInterval register

and uses the updated value from the next SOF.

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Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 54 of 134

10.2.4 HcLSThreshold register (R/W: 11H/91H)

The HcLSThreshold register contains an 11-bit value used by the HC to determine

whether to commit to the transfer of a maximum of 8-byte LS packet before EOF.

Neither the HC nor the HCD is allowed to change this value.

Code (Hex): 11 — read

Code (Hex): 91 — write

Table 24: HCFmNumber register: bit allocation

Bit 31 30 29 28 27 26 25 24

Symbol reserved

Reset 00000000

Access RRRRRRRR

Bit 23 22 21 20 19 18 17 16

Symbol reserved

Reset 00000000

Access RRRRRRRR

Bit 15 14 13 12 11 10 9 8

Symbol FN[15:8]

Reset 00000000

Access RRRRRRRR

Bit 76543210

Symbol FN[7:0]

Reset 00000000

Access RRRRRRRR

Table 25: HcFmNumber register: bit description

Bit Symbol Description

31 to 16 −reserved

15 to 0 FN[15:0] FrameNumber: This ﬁeld is incremented when HcFmRemaining

is reloaded. It rolls over to 0000H after FFFFH. When the

USBOperational state is entered, this ﬁeld will be incremented

automatically. HC will set the StartofFrame bit in the

HcInterruptStatus register.

Table 26: HcLSThreshold register: bit allocation

Bit 31 30 29 28 27 26 25 24

Symbol reserved

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 23 22 21 20 19 18 17 16

Symbol reserved

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

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Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 55 of 134

10.3 HC Root Hub registers

All registers included in this partition are dedicated to the USB Root Hub, which is an

integral part of the HC although it is functionally a separate entity. The Host Controller

Driver (HCD) emulates USBD accesses to the Root Hub via a register interface. The

HCD maintains many USB-deﬁned hub features that are not required to be supported

in hardware. For example, the Hub’s Device, Conﬁguration, Interface, Endpoint

Descriptors, as well as some static ﬁelds of the Class Descriptor, are maintained only

in the HCD. The HCD also maintains and decodes the Root Hub’s device address as

well as other minor operations more suited for software than for hardware.

The Root Hub registers were developed to match the bit organization and operation

of typical hubs found in the system.

Four 32-bit registers have been deﬁned:

•HcRhDescriptorA

•HcRhDescriptorB

•HcRhStatus

•HcRhPortStatus[1:NDP]

Each register is read and written as a DWORD. These registers are only written

during initialization to correspond with the system implementation. The

HcRhDescriptorA and HcRhDescriptorB registers are writeable regardless of the

HC’s USB states. HcRhStatus and HcRhPortStatus are writeable during the

USBOperational state only.

Bit 15 14 13 12 11 10 9 8

Symbol reserved LST[10:8]

Reset 00000110

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 76543210

Symbol LST[7:0]

Reset 00101000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Table 27: HcLSThreshold register: bit description

Bit Symbol Description

31 to 11 −reserved

10 to 0 LST[10:0] LSThreshold: Contains a value that is compared to the

FrameRemaining ﬁeld before a low-speed transaction is initiated.

The transaction is started only if FrameRemaining ≥this ﬁeld. The

value is calculated by the HCD, which considers transmission and

set-up overhead. Default value: 1576 (628H)

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Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 56 of 134

10.3.1 HcRhDescriptorA register (R/W: 12H/92H)

The HcRhDescriptorA register is the ﬁrst register of two describing the characteristics

of the Root Hub. Reset values are Implementation-Speciﬁc (IS). The descriptor length

(11), descriptor type and hub controller current (0) ﬁelds of the hub Class Descriptor

are emulated by the HCD. All other ﬁelds are located in the registers

HcRhDescriptorA and HcRhDescriptorB.

Remark: IS denotes an implementation-speciﬁc reset value for that ﬁeld.

Code (Hex): 12 — read

Code (Hex): 92 — write

Table 28: HcRhDescriptorA register: bit description

Bit 31 30 29 28 27 26 25 24

Symbol POTPGT[7:0]

Reset IS IS IS IS IS IS IS IS

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 23 22 21 20 19 18 17 16

Symbol reserved

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 15 14 13 12 11 10 9 8

Symbol reserved NOCP OCPM DT NPS PSM

Reset 0 0 0 IS IS 0 IS IS

Access R R R R/W R/W R R/W R/W

Bit 76543210

Symbol reserved NDP[1:0]

Reset 000000ISIS

Access RRRRRRRR

Table 29: HcRhDescriptorA register: bit description

Bit Symbol Description

31 to 24 POTPGT

[7:0]

PowerOnToPowerGoodTime: This byte speciﬁes the duration

HCD has to wait before accessing a powered-on port of the Root

Hub. The unit of time is 2 ms. The duration is calculated as

POTPGT × 2ms.

23 to 13 - reserved

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Product data Rev. 03 — 23 December 2004 57 of 134

10.3.2 HcRhDescriptorB register (R/W: 13H/93H)

The HcRhDescriptorB register is the second register of two describing the

characteristics of the Root Hub. These ﬁelds are written during initialization to

correspond with the system implementation. Reset values are

implementation-speciﬁc (IS).

12 NOCP NoOverCurrentProtection: This bit describes how the

overcurrent status for the Root Hub ports are reported. When this

bit is cleared, the OverCurrentProtectionMode ﬁeld speciﬁes

global or per-port reporting.

0 — overcurrent status is reported collectively for all downstream

ports

1 — no overcurrent reporting supported

11 OCPM OverCurrentProtectionMode: This bit describes how the

overcurrent status for the Root Hub ports is reported. At reset, this

ﬁeld reﬂects the same mode as PowerSwitchingMode. This ﬁeld is

valid only if the NoOverCurrentProtection ﬁeld is cleared.

0 — overcurrent status is reported collectively for all downstream

ports.

1 — overcurrent status is reported on a per-port basis. On

power-up, clear this bit and then set it to logic 1.

10 DT DeviceType: This bit speciﬁes that the Root Hub is not a

compound device—it is not permitted. This ﬁeld will always

read/write 0.

9 NPS NoPowerSwitching: These bits are used to specify whether

power switching is supported or ports are always powered. It is

implementation-speciﬁc. When this bit is cleared, the bit

PowerSwitchingMode speciﬁes global or per-port switching.

0 — ports are power switched

1 — ports are always powered on when the HC is powered on

8 PSM PowerSwitchingMode: This bit is used to specify how the power

switching of the Root Hub ports is controlled. It is

implementation-speciﬁc. This ﬁeld is valid only if the

NoPowerSwitching ﬁeld is cleared.

0 — all ports are powered at the same time

1 — each port is powered individually. This mode allows port

power to be controlled by either the global switch or per-port

switching. If the bit PortPowerControlMask is set, the port

responds to only port power commands (Set/ClearPortPower). If

the port mask is cleared, then the port is controlled only by the

global power switch (Set/ClearGlobalPower).

7 to 2 - reserved

1 to 0 NDP[1:0] NumberDownstreamPorts: These bits specify the number of

downstream ports supported by the Root Hub. The maximum

number of ports supported by ISP1161A is 2.

Table 29: HcRhDescriptorA register: bit description

…continued

Bit Symbol Description

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Code (Hex): 13 — read

Code (Hex): 93 — write

Table 30: HcRhDescriptorB register: bit allocation

Bit 31 30 29 28 27 26 25 24

Symbol reserved

Reset N/A N/A N/A N/A N/A N/A N/A N/A

Access RRRRRRRR

Bit 23 22 21 20 19 18 17 16

Symbol reserved PPCM[2:0]

Reset N/A N/A N/A N/A N/A IS IS IS

Access RRRRRR/WR/WR/W

Bit 15 14 13 12 11 10 9 8

Symbol reserved

Reset N/A N/A N/A N/A N/A N/A N/A N/A

Access RRRRRRRR

Bit 76543210

Symbol reserved DR[2:0]

Reset N/A N/A N/A N/A N/A IS IS IS

Access RRRRRR/WR/WR/W

Table 31: HcRhDescriptorB register: bit description

Bit Symbol Description

31 to 19 - reserved

18 to 16 PPCM[2:0] PortPowerControlMask: Each bit indicates whether a port is

affected by a global power control command when

PowerSwitchingMode is set. When set, the port’s power state is

only affected by per-port power control (Set/ClearPortPower).

When cleared, the port is controlled by the global power switch

(Set/ClearGlobalPower). If the device is conﬁgured to global

switching mode (PowerSwitchingMode = 0), this ﬁeld is not valid.

Bit 0 — reserved

Bit 1 — Ganged-power mask on Port #1

Bit 2 — Ganged-power mask on Port #2

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 59 of 134

10.3.3 HcRhStatus register (R/W: 14H/94H)

The HcRhStatus register is divided into two parts. The lower word of a DWORD

represents the Hub Status ﬁeld and the upper word represents the Hub Status

Change ﬁeld. Reserved bits should always be written as logic 0.

Code (Hex): 14 — read

Code (Hex): 94 — write

15 to 3 - reserved

2 to 0 DR[2:0] DeviceRemovable: Each bit is dedicated to a port of the Root

Hub. When cleared, the attached device is removable. When set,

the attached device is not removable.

Bit 0 — reserved

Bit 1 — Device attached to Port #1

Bit 2 — Device attached to Port #2

Table 31: HcRhDescriptorB register: bit description

…continued

Bit Symbol Description

Table 32: HcRhStatus register: bit allocation

Bit 31 30 29 28 27 26 25 24

Symbol CRWE reserved

Reset 00000000

Access WRRRRRRR

Bit 23 22 21 20 19 18 17 16

Symbol reserved OCIC LPSC

Reset 00000000

Access RRRRRRR/WR/W

Bit 15 14 13 12 11 10 9 8

Symbol DRWE reserved

Reset 00000000

Access R/WRRRRRRR

Bit 76543210

Symbol reserved OCI LPS

Reset 00000000

Access RRRRRRRR/W

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 60 of 134

Table 33: HcRhStatus register: bit description

Bit Symbol Description

31 CRWE On write—ClearRemoteWakeupEnable: Writing logic 1 clears

DeviceRemoveWakeupEnable. Writing logic 0 has no effect.

30 to 18 - reserved

17 CCIC OverCurrentIndicatorChange: This bit is set by hardware when a

change has occurred to the OCI ﬁeld of this register. The HCD

clears this bit by writing logic 1. Writing logic 0 has no effect.

16 LPSC On read—LocalPowerStatusChange: The Root Hub does not

support the local power status feature. Therefore, this bit is always

read as logic 0.

On write—SetGlobalPower: In global power mode

(PowerSwitchingMode=0), this bit is written to logic 1 to turn on

power to all ports (clear PortPowerStatus). In per-port power

mode, it sets PortPowerStatus only on ports whose bit

PortPowerControlMask is not set. Writing logic 0 has no effect.

15 DRWE On read—DeviceRemoteWakeupEnable: This bit enables the bit

ConnectStatusChange as a resume event, causing a state

transition USBSuspend to USBResume and setting the

ResumeDetected interrupt.

0 — ConnectStatusChange is not a remote wake-up event

1 — ConnectStatusChange is a remote wake-up event

On write—SetRemoteWakeupEnable: Writing logic 1 sets

DeviceRemoveWakeupEnable. Writing logic 0 has no effect.

14 to 2 - reserved

1 OCI OverCurrentIndicator: This bit reports overcurrent conditions

when global reporting is implemented. When set, an overcurrent

condition exists. When clear, all power operations are normal. If

per-port overcurrent protection is implemented this bit is always

logic 0.

0 LPS On read—LocalPowerStatus: The Root Hub does not support the

local power status feature. Therefore, this bit is always read as

logic 0.

On write—ClearGlobalPower: In global power mode

(PowerSwitchingMode = 0), this bit is written to logic 1 to turn off

power to all ports (clear PortPowerStatus). In per-port power

mode, it clears PortPowerStatus only on ports whose

PortPowerControlMask bit is not set. Writing logic 0 has no effect.

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 61 of 134

10.3.4 HcRhPortStatus[1:2] register (R/W [1]:15H/95H, [2]: 16H/96H)

The HcRhPortStatus[1:2] register is used to control and report port events on a

per-port basis. NumberDownstreamPorts represents the number of HcRhPortStatus

registers that are implemented in hardware. The lower word is used to reﬂect the port

status, whereas the upper word reﬂects the status change bits. Some status bits are

implemented with special write behavior. If a transaction (token through handshake)

is in progress when a write to change port status occurs, the resulting port status

change must be postponed until the transaction completes. Reserved bits should

always be written logic 0.

Code (Hex): [1] = 15, [2] = 16 — read

Code (Hex): [1] = 95, [2] = 96 — write

Table 34: HcRhPortStatus[1:2] register: bit allocation

Bit 31 30 29 28 27 26 25 24

Symbol reserved

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 23 22 21 20 19 18 17 16

Symbol reserved PRSC OCIC PSSC PESC CSC

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 15 14 13 12 11 10 9 8

Symbol reserved LSDA PPS

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 76543210

Symbol reserved PRS POCI PSS PES CCS

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Table 35: HcRhPortStatus[1:2] register: bit description

Bit Symbol Description

31 to 21 - reserved

20 PRSC PortResetStatusChange: This bit is set at the end of the 10 ms

port reset signal. The HCD writes logic 1 to clear this bit. Writing

logic 0 has no effect.

0 — port reset is not complete

1 — port reset is complete

19 OCIC PortOverCurrentIndicatorChange: This bit is valid only if

overcurrent conditions are reported on a per-port basis. This bit is

set when Root Hub changes the PortOverCurrentIndicator bit. The

HCD writes logic 1 to clear this bit. Writing logic 0 has no effect.

0 — no change in PortOverCurrentIndicator

1 — PortOverCurrentIndicator has changed

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Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 62 of 134

18 PSSC PortSuspendStatusChange: This bit is set when the full resume

sequence has been completed. This sequence includes the 20 s

resume pulse, LS EOP, and 3 ms re-synchronization delay. The

HCD writes logic 1 to clear this bit. Writing logic 0 has no effect.

This bit is also cleared when ResetStatusChange is set.

0 — resume is not complete

1 — resume is complete

17 PESC PortEnableStatusChange: This bit is set when hardware events

cause the PortEnableStatus bit to be cleared. Changes from HCD

writes do not set this bit. The HCD writes logic 1 to clear this bit.

Writing logic 0 has no effect.

0 — no change in PortEnableStatus

1 — change in PortEnableStatus

16 CSC ConnectStatusChange: This bit is set whenever a connect or

disconnect event occurs. The HCD writes logic 1 to clear this bit.

Writing logic 0 has no effect. If CurrentConnectStatus is cleared

when a SetPortReset, SetPortEnable, or SetPortSuspend write

occurs, this bit is set to force the driver to re-evaluate the

connection status since these writes should not occur if the port is

disconnected.

0 — no change in CurrentConnectStatus

1 — change in CurrentConnectStatus

Remark: If the DeviceRemovable[NDP] bit is set, this bit is set only

after a Root Hub reset to inform the system that the device is

connected.

15 to 10 - reserved

9 LSDA (read) LowSpeedDeviceAttached: This bit indicates the speed of

the device connected to this port. When set, a low-speed device is

connected to this port. When clear, a full-speed device is

connected to this port. This ﬁeld is valid only when the

CurrentConnectStatus is set.

0 — full-speed device attached

1 — low-speed device attached

(write) ClearPortPower: The HCD clears the PortPowerStatus bit

by writing logic 1 to this bit. Writing logic 0 has no effect.

Table 35: HcRhPortStatus[1:2] register: bit description

…continued

Bit Symbol Description

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 63 of 134

8 PPS (read) PortPowerStatus: This bit reﬂects the port power status,

regardless of the type of power switching implemented. This bit is

cleared if an overcurrent condition is detected.

The HCD sets this bit by writing SetPortPower or SetGlobalPower.

The HCD clears this bit by writing ClearPortPower or

ClearGlobalPower. Which power control switches are enabled is

determined by PowerSwitchingMode.

In the global switching mode (PowerSwitchingMode = 0), only

Set/ClearGlobalPower controls this bit. In per-port power switching

(PowerSwitchingMode = 1), if the PortPowerControlMask[NDP] bit

for the port is set, only Set/ClearPortPower commands are

enabled. If the mask is not set, only Set/ClearGlobalPower

commands are enabled.

When port power is disabled, CurrentConnectStatus,

PortEnableStatus, PortSuspendStatus, and PortResetStatus

should be reset.

0 — port power is off

1 — port power is on

(write) SetPortPower: The HCD writes logic 1 to set the

PortPowerStatus bit. Writing logic 0 has no effect.

Remark: This bit always reads logic 1 if power switching is not

supported.

7 to 5 - reserved

4 PRS (read) PortResetStatus: When this bit is set by a write to

SetPortReset, port reset signaling is asserted. When reset is

completed, this bit is cleared when PortResetStatusChange is set.

This bit cannot be set if CurrentConnectStatus is cleared.

0 — port reset signal is not active

1 — port reset signal is active

(write) SetPortReset: The HCD sets the port reset signaling by

writing logic 1 to this bit. Writing logic 0 has no effect. If

CurrentConnectStatus is cleared, this write does not set

PortResetStatus but instead sets ConnectStatusChange. This

informs the driver that it attempted to reset a disconnected port.

3 POCI (read) PortOverCurrentIndicator: This bit is valid only when the

Root Hub is conﬁgured in such a way that overcurrent conditions

are reported on a per-port basis. If per-port overcurrent reporting

is not supported, this bit is set to logic 0. If cleared, all power

operations are normal for this port. If set, an overcurrent condition

exists on this port. This bit always reﬂects the overcurrent input

signal.

0 — no overcurrent condition

1 — overcurrent condition detected

(write) ClearSuspendStatus: The HCD writes logic 1 to initiate a

resume. Writing logic 0 has no effect. A resume is initiated only if

PortSuspendStatus is set.

Table 35: HcRhPortStatus[1:2] register: bit description

…continued

Bit Symbol Description

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 64 of 134

2 PSS (read) PortSuspendStatus: This bit indicates whether the port is

suspended or in the resume sequence. It is set by a

SetSuspendState write and cleared when

PortSuspendStatusChange is set at the end of the resume

interval. This bit cannot be set if CurrentConnectStatus is cleared.

This bit is also cleared when PortResetStatusChange is set at the

end of the port reset or when the HC is placed in the USBResume

state. If an upstream resume is in progress, it is propagated to the

HC.

0 — port is not suspended

1 — port is suspended

(write) SetPortSuspend: The HCD sets the PortSuspendStatus

bit by writing logic 1 to this bit. Writing logic 0 has no effect. If

CurrentConnectStatus is cleared, this write action does not set

PortSuspendStatus; instead it sets ConnectStatusChange. This

informs the driver that it attempted to suspend a disconnected

port.

1 PES (read) PortEnableStatus: This bit indicates whether the port is

enabled or disabled. The Root Hub can clear this bit when an

overcurrent condition, disconnect event, switched-off power, or

operational bus error such as babble is detected. This change also

causes PortEnabledStatusChange to be set. The HCD sets this bit

by writing SetPortEnable and clears it by writing ClearPortEnable.

This bit cannot be set when CurrentConnectStatus is cleared. This

bit is also set at the completion of a port reset when

ResetStatusChange is set or port is suspended when

SuspendStatusChange is set.

0 — port is disabled

1 — port is enabled

(write) SetPortEnable: The HCD sets PortEnableStatus by writing

logic 1. Writing logic 0 has no effect. If CurrentConnectStatus is

cleared, this write does not set PortEnableStatus, but instead sets

ConnectStatusChange. This informs the driver that it attempted to

enable a disconnected port.

0 CCS (read) CurrentConnectStatus: This bit reﬂects the current state

of the downstream port.

0 — no device connected

1 — device connected

(write) ClearPortEnable: The HCD writes logic 1 to this bit to clear

the PortEnableStatus bit. Writing logic 0 has no effect.

CurrentConnectStatus is not affected by any write.

Remark: This bit always reads logic 1 when the attached device is

nonremovable (DeviceRemoveable[NDP]).

Table 35: HcRhPortStatus[1:2] register: bit description

…continued

Bit Symbol Description

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Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 65 of 134

10.4 HC DMA and interrupt control registers

10.4.1 HcHardwareConﬁguration register (R/W: 20H/A0H)

1. Bit 0, InterruptPinEnable, is used as pin INT1’s master interrupt enable. This bit

should be used together with the register HcµPInterruptEnable to enable pin

INT1.

2. Bits 4 and 3 are ﬁxed at logic 0 and logic 1 for the ISP1161A.

Code (Hex): 20 — read

Code (Hex): A0 — write

Table 36: HcHardwareConﬁguration register: bit allocation

Bit 15 14 13 12 11 10 9 8

Symbol reserved 2_Down

streamPort

15K

resistorsel

Suspend

ClkNotStop

AnalogOC

Enable

reserved DACKMode

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 7 6 5 4 3 2 1 0

Symbol EOTInput

Polarity

DACKInput

Polarity

DREQOut

putPolarity

DataBusWidth[1:0] InterruptOut

putPolarity

InterruptPi

nTrigger

InterruptPin

Enable

Reset 00101000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Table 37: HcHardwareConﬁguration register: bit description

Bit Symbol Description

15 to 13 - reserved

12 2_DownstreamPort15Kresistor

Sel

0 — use external 15 kΩ resistors for downstream

ports.

Power-up value

1 — built-in resistors for downstream ports

11 SuspendClkNotStop 0 — clock can be stopped

1 — clock can not be stopped

10 AnalogOCEnable 0 — use external OC detection. Digital input

1 — use on-chip OC detection. Analog input

9 - reserved

8 DACKMode 0 — normal operation. DACK1 is used with read

and write signals. Power-up value

1 — reserved

7 EOTInputPolarity 0 — active LOW. Power-up value

1 — active HIGH

6 DACKInputPolarity 0 — active LOW. Power-up value

1 — reserved

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 66 of 134

10.4.2 HcDMAConﬁguration register (R/W: 21H/A1H)

Code (Hex): 21 — read

Code (Hex): A1 — write

5 DREQOutputPolarity 0 — active LOW

1 — active HIGH. Power-up value

4 to 3 DataBusWidth[1:0] 01 — 16 bits

Others — reserved

2 InterruptOutputPolarity 0 — active LOW. Power-up value

1 — active HIGH

1 InterruptPinTrigger 0 — interrupt is level-triggered. Power-up value

1 — interrupt is edge-triggered

0 InterruptPinEnable 0 — INT1 is disabled. Power-up value

1 — pin INT1 is enabled

Table 37: HcHardwareConﬁguration register: bit description

…continued

Bit Symbol Description

Table 38: HcDMAConﬁguration register: bit allocation

Bit 15 14 13 12 11 10 9 8

Symbol reserved

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 76543210

Symbol reserved BurstLen[1:0] DMA

Enable

reserved DMACount

erSelect

ITL_ATL_

DataSelect

DMARead

WriteSelect

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Table 39: HcDMAConﬁguration register: bit description

Bit Symbol Description

15 to 7 - reserved

6 to 5 BurstLen[1:0] 00 — single-cycle burst DMA

01 — 4-cycle burst DMA

10 — 8-cycle burst DMA

11 — reserved

4 DMAEnable 0 — DMA is terminated

1 — DMA is enabled

This bit will be reset to zero when DMA transfer is completed

3 - reserved

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 67 of 134

10.4.3 HcTransferCounter register (R/W: 22H/A2H)

This register holds the number of bytes of a PIO or DMA transfer. For a PIO transfer,

the number of bytes being read or written to the Isochronous Transfer List (ITL) or

Acknowledged Transfer List (ATL) buffer RAM must be written into this register. For a

DMA transfer, the number of bytes must be written into this register as well. However,

for this counter to be read into the DMA counter, the HCD must set bit 2 of the

HcDMAConﬁguration register. The counter value for ATL must not be greater than

1000H, and for ITL it must not be greater than 800H. When the byte count of the data

transfer reaches this value, the HC will generate an internal EOT signal to set bit 2

(AllEOTInterrupt) of the HcµPInterrupt register, and also update the HcBufferStatus

Code (Hex): 22 — read

Code (Hex): A2 — write

2 DMACounter

Select

0 — DMA counter not used. External EOT must be used

1 — Enables the DMA counter for DMA transfer.

HcTransferCounter register must be ﬁlled with non-zero values for

DREQ1 to be raised after bit DMA Enable is set

1 ITL_ATL_

DataSelect

0 — ITL buffer RAM selected for ITL data

1 — ATL buffer RAM selected for ATL data

0 DMARead

WriteSelect

0 — read from the HC FIFO buffer RAM

1 — write to the HC FIFO buffer RAM

Table 39: HcDMAConﬁguration register: bit description

…continued

Bit Symbol Description

Table 40: HcTransferCounter register: bit allocation

Bit 15 14 13 12 11 10 9 8

Symbol Counter value

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 76543210

Symbol Counter value

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Table 41: HcTransferCounter register: bit description

Bit Symbol Description

15 to 0 Counter

value

The number of data bytes to be read to or written from RAM

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Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 68 of 134

10.4.4 HcµPInterrupt register (R/W: 24H/A4H)

All the bits in this register will be active on power-on reset. However, none of the

active bits will cause an interrupt on the interrupt pin (INT1) unless they are set by the

respective bits in the HcµPInterruptEnable register, and together with bit 0 of the

HcHardwareConﬁguration register.

After this register (24H read) is read, the bits that are active will not be reset, until

logic 1 is written to the bits in this register (A4H - write) to clear it. To clear all the

enabled bits in this register, the HCD must write FFH to this register.

Code (Hex): 24 — read

Code (Hex): A4 — write

Table 42: HcµPInterrupt register: bit allocation

Bit 15 14 13 12 11 10 9 8

Symbol reserved

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 76543210

Symbol reserved ClkReady HC

Suspended

OPR_Reg reserved AllEOT

Interrupt

ATLInt SOFITLInt

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Table 43: HcµPInterrupt register: bit description

Bit Symbol Description

15 to 7 - reserved

6 ClkReady 0 — no event

1 — clock is ready. After a wake-up is sent, there is a wait for clock

ready. (Maximum is 1 ms, and typical is 160 µs)

5HC

Suspended

0 — no event

1 — the HC has been suspended and no USB activity is sent from

the microprocessor for each ms. When the microprocessor wants

to suspend the HC, the microprocessor must write to the

HcControl register. And when all downstream devices are

suspended, then the HC stops sending SOF; the HC is suspended

by having the HcControl register written into.

4 OPR_Reg 0 — no event

1 — there are interrupts from HC side. Need to read HcControl

and HcInterrupt registers to detect type of interrupt on the HC (if

the HC requires the Operational register to be updated)

3 - reserved

2 AllEOT

Interrupt

0 — no event

1 — implies that data transfer has been completed via PIO transfer

or DMA transfer. Occurrence of internal or external EOT will set

this bit.

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Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 69 of 134

10.4.5 HcµPInterruptEnable register (R/W: 25H/A5H)

The bits 6:0 in this register are the same as those in the HcµPInterrupt register. They

are used together with bit 0 of the HcHardwareConﬁguration register to enable or

disable the bits in the HcµPInterrupt register.

At power-on, all bits in this register are masked with logic 0. This means no interrupt

request output on the interrupt pin INT1 can be generated.

When the bit is set to logic 1, the interrupt for the bit is not masked but enabled.

Code (Hex): 25 — read

Code (Hex): A5 — write

1 ATLInt 0 — no event

1 — implies that the microprocessor must read ATL data from the

HC. This requires that the HcBufferStatus register must ﬁrst be

read. The time for this interrupt depends on the number of clocks

bit set for USB activities in each ms.

0 SOFITLInt 0 — no event

1 — implies that SOF indicates the 1 ms mark. The ITL buffer that

the HC has handled must be read. To know the ITL buffer status,

the HcBufferStatus register must ﬁrst be read. This is for the

microprocessor to get ISO data to or from the HC. For more

information, see the 6th paragraph in Section 9.5.

Table 43: HcµPInterrupt register: bit description

…continued

Bit Symbol Description

Table 44: HcµPInterruptEnable register: bit allocation

Bit 15 14 13 12 11 10 9 8

Symbol reserved

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 76543210

Symbol reserved ClkReady HC

Suspended

Enable

OPR

Interrupt

Enable

reserved EOT

Interrupt

Enable

AT L

Interrupt

Enable

SOF

Interrupt

Enable

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Table 45: HcµPInterruptEnable register: bit description

Bit Symbol Description

15 to 7 - reserved

6 ClkReady 0 — power-up value

1 — enables Clkready interrupt

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Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 70 of 134

10.5 HC miscellaneous registers

10.5.1 HcChipID register (R: 27H)

Read this register to get the ID of the ISP1161A silicon chip. The high byte stands for

the product name (here 61H stands for ISP1161A). The low byte indicates the

revision number of the product including engineering samples.

Code (Hex): 27 — read

5HC

Suspended

Enable

0 — power-up value

1 — enables HC suspended interrupt. When the microprocessor

wants to suspend the HC, the microprocessor must write to the

HcControl register. And when all downstream devices are

suspended, then the HC stops sending SOF; the HC is suspended

by having the HcControl register written into.

4 OPR

Interrupt

Enable

0 — power-up value

1 — enables the 32-bit Operational register’s interrupt (if the HC

requires the Operational register to be updated)

3 - reserved

2EOT

Interrupt

Enable

0 — power-up value

1 — enables the EOT interrupt which indicates an end of a

read/write transfer

1ATL

Interrupt

Enable

0 — power-up value

1 — enables ATL interrupt. The time for this interrupt depends on

the number of clock bits set for USB activities in each ms.

0 SOF

Interrupt

Enable

0 — power-up value

1 — enables the interrupt bit due to SOF (for the microprocessor

DMA to get ISO data from the HC by ﬁrst accessing the

HcDMAConﬁguration register)

Table 45: HcµPInterruptEnable register: bit description

…continued

Bit Symbol Description

Table 46: HcChipID register: bit allocation

Bit 15 14 13 12 11 10 9 8

Symbol ChipID[15:8]

Reset 01100001

Access RRRRRRRR

Bit 76543210

Symbol ChipID[7:0]

Reset 00100010

Access RRRRRRRR

Table 47: HcChipID register: bit description

Bit Symbol Description

15 to 0 ChipID[15:0] ISP1161A’s chip ID

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Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 71 of 134

10.5.2 HcScratch register (R/W: 28H/A8H)

This register is for the HCD to save and restore values when required.

Code (Hex): 28 — read

Code (Hex): A8 — write

10.5.3 HcSoftwareReset register (W: A9H)

This register provides a means for software reset of the HC. To reset the HC, the HCD

must write a reset value of F6H to this register. Upon receiving the reset value, the

HC resets all the registers except its buffer memory.

Code (Hex): A9 — write

Table 48: HcScratch register: bit allocation

Bit 15 14 13 12 11 10 9 8

Symbol Scratch[15:8]

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 76543210

Symbol Scratch[7:0]

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Table 49: HcScratch register: bit description

Bit Symbol Description

15 to 0 Scratch[15:0] Scratch register value

Table 50: HcSoftwareReset register: bit allocation

Bit 15 14 13 12 11 10 9 8

Symbol Reset[15:8]

Reset 00000000

Access WWWWWWWW

Bit 76543210

Symbol Reset[7:0]

Reset 00000000

Access WWWWWWWW

Table 51: HcSoftwareReset register: bit description

Bit Symbol Description

15 to 0 Reset[15:0] Writing a reset value of F6H will cause the HC to reset all the

registers except its buffer memory.

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 72 of 134

10.6 HC buffer RAM control registers

10.6.1 HcITLBufferLength register (R/W: 2AH/AAH)

Write to this register to assign the ITL buffer size in bytes: ITL0 and ITL1 are assigned

the same value. For example, if HcITLBufferLength register is set to 2 kbytes, then

ITL0 and ITL1 would be allocated 2 kbytes each.

Must follow the formula:

ATL buffer length + 2 × (ITL buffer size) ≤ 1000H (that is, 4 kbytes)

where: ITL buffer size = ITL0 buffer length = ITL1 buffer length

Code (Hex): 2A — read

Code (Hex): AA — write

10.6.2 HcATLBufferLength register (R/W: 2BH/ABH)

Write to this register to assign ATL buffer size.

Code (Hex): 2B — read

Code (Hex): AB — write

Remark: The maximum total RAM size is 1000H (4096 in decimal) bytes. That

means ITL0 (length) + ITL1 (length) + ATL (length) ≤ 1000H bytes. For example, if

ATL buffer length has been set to be 800H, then the maximum ITL buffer length can

only be set as 400H.

Table 52: HcITLBufferLength register: bit allocation

Bit 15 14 13 12 11 10 9 8

Symbol ITLBufferLength[15:8]

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 76543210

Symbol ITLBufferLength[7:0]

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Table 53: HcITLBufferLength register: bit description

Bit Symbol Description

15 to 0 ITLBufferLength[15:0] Assign ITL buffer length

Table 54: HcATLBufferLength register: bit allocation

Bit 15 14 13 12 11 10 9 8

Symbol ATLBufferLength[15:8]

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

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10.6.3 HcBufferStatus register (R: 2CH)

Code (Hex): 2C — read

Bit 76543210

Symbol ATLBufferLength[7:0]

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Table 55: HcATLBufferLength register: bit description

Bit Symbol Description

15 to 0 ATLBufferLength[15:0] Assign ATL buffer length

Table 56: HcBufferStatus register: bit allocation

Bit 15 14 13 12 11 10 9 8

Symbol reserved

Reset 00000000

Access RRRRRRRR

Bit 76543210

Symbol reserved ATLBuffer

Done

ITL1Buffer

Done

ITL0Buffer

Done

ATLBuffer

Full

ITL1Buffer

Full

ITL0Buffer

Full

Reset 00000000

Access RRRRRRRR

Table 57: HcBufferStatus register: bit description

Bit Symbol Description

15 to 6 - reserved

5 ATLBuffer

Done

0 — ATL Buffer not read by HC yet

1 — ATL Buffer read by HC

4 ITL1Buffer

Done

0 — ITL1 Buffer not read by HC yet

1 — ITL1 Buffer read by HC

3 ITL0Buffer

Done

0 — 1TL0 Buffer not read by HC yet

1 — 1TL0 Buffer read by HC

2 ATLBuffer

Full

0 — ATL Buffer is empty

1 — ATL Buffer is full

1 ITL1Buffer

Full

0 — 1TL1 Buffer is empty

1 — 1TL1 Buffer is full

0 ITL0Buffer

Full

0 — ITL0 Buffer is empty

1 — ITL0 Buffer is full

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10.6.4 HcReadBackITL0Length register (R: 2DH)

This register’s value stands for the current number of data bytes inside an ITL0 buffer

to be read back by the microprocessor. The HCD must set the HcTransferCounter

equivalent to this value before reading back the ITL0 buffer RAM.

Code (Hex): 2D — read

10.6.5 HcReadBackITL1Length register (R: 2EH)

This register’s value stands for the current number of data bytes inside the ITL1 buffer

to be read back by the microprocessor. The HCD must set the HcTransferCounter

equivalent to this value before reading back the ITL1 buffer RAM.

Code (Hex): 2E — read

Table 58: HcReadBackITL0Length register: bit allocation

Bit 15 14 13 12 11 10 9 8

Symbol RdITL0BufferLength[15:8]

Reset 00000000

Access RRRRRRRR

Bit 76543210

Symbol RdITL0BufferLength[7:0]

Reset 00000000

Access RRRRRRRR

Table 59: HcReadBackITL0Length register: bit description

Bit Symbol Description

15 to 0 RdITL0BufferLength[15:0] The number of bytes for ITL0 data to be read back by

the microprocessor

Table 60: HcReadBackITL1Length register: bit allocation

Bit 15 14 13 12 11 10 9 8

Symbol RdITL1BufferLength[15:8]

Reset 00000000

Access RRRRRRRR

Bit 76543210

Symbol RdITL1BufferLength[7:0]

Reset 00000000

Access RRRRRRRR

Table 61: HcReadBackITL1Length register: bit description

Bit Symbol Description

15 to 0 RdITL1BufferLength[15:0] The number of bytes for ITL1 data to be read back by

the microprocessor

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10.6.6 HcITLBufferPort register (R/W: 40H/C0H)

This is the ITL buffer RAM read/write port. The bits 15:8 contain the data byte that

comes from the ITL buffer RAM’s even address. The bits 7:0 contain the data byte

that comes from the ITL buffer RAM’s odd address.

Code (Hex): 40 — read

Code (Hex): C0 — write

The HCD must set the byte count into the HcTransferCounter register and check the

HcBufferStatus register before reading from or writing to the buffer. The HCD must

write the command (40H for read, C0H for write) once only, and then read or write

both bytes of the data word. After every read/write, the pointer of ITL buffer RAM will

be automatically increased by two to point to the next data word until it reaches the

value of HcTransferCounter register; otherwise, an internal EOT signal is not

generated to set the bit 2 (AllEOTInterrupt) of the HcµPInterrupt register and update

the HcBufferStatus register.

The HCD must take care of the fact that the internal buffer RAM is organized in bytes.

The HCD must write the byte count into the HcTransferCounter register, but the HCD

reads or writes the buffer RAM by 16 bits (by 1 data word).

10.6.7 HcATLBufferPort register (R/W: 41H/C1H)

This is the ATL buffer RAM read/write port. The bits 15:8 contain the data byte that

comes from the Acknowledged Transfer List (ATL) buffer RAM’s odd address. Bits 7:0

contain the data byte that comes from the ATL buffer RAM’s even address.

Code (Hex): 41 — read

Code (Hex): C1 — write

Table 62: HcITLBufferPort register: bit allocation

Bit 15 14 13 12 11 10 9 8

Symbol DataWord[15:8]

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 76543210

Symbol DataWord[7:0]

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Table 63: HcITLBufferPort register: bit description

Bit Symbol Description

15 to 0 DataWord[15:0] read/write ITL buffer RAM’s two data bytes.

Table 64: HcATLBufferPort register: bit allocation

Bit 15 14 13 12 11 10 9 8

Symbol DataWord[15:8]

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

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The HCD must set the byte count into the HcTransferCounter register and check the

HcBufferStatus register before reading from or writing to the buffer. The HCD must

write the command (41H for read, C1H for write) once only, and then read or write

both bytes of the data word. After every read/write, the pointer of ATL buffer RAM will

be automatically increased by two to point to the next data word until it reaches the

value of HcTransferCounter register; otherwise, an internal EOT signal is not

generated to set the bit 2 (AllEOTInterrupt) of the HcµPInterrupt register and update

the HcBufferStatus register.

The HCD must take care of the difference: the internal buffer RAM is organized in

bytes, so the HCD must write the byte count into the HcTransferCounter register, but

the HCD reads or writes the buffer RAM by 16 bits (by 1 data word).

Bit 76543210

Symbol DataWord[7:0]

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Table 65: HcATLBufferPort register: bit description

Bit Symbol Description

15 to 0 DataWord[15:0] read/write ATL buffer RAM’s two data bytes.

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11. USB device controller (DC)

The Device Controller (DC) in the ISP1161A is based on the Philips ISP1181B USB

Full-Speed Interface Device IC. The functionality, commands, and register sets are

the same as ISP1181B in 16-bit bus mode. If there are any differences between the

ISP1181B and ISP1161A data sheets, in terms of the DC functionality, the ISP1161A

data sheet supersedes content in the ISP1181B data sheet.

In general the DC in an ISP1161A provides 16 endpoints for USB device

implementation. Each endpoint can be allocated an amount of RAM space in the

on-chip Ping-Pong buffer RAM.

Remark: The Ping-Pong buffer RAM for the DC is independent of the buffer RAM in

the HC.

When the buffer RAM is full, the DC will transfer the data in the buffer RAM to the

USB bus. When the buffer RAM is empty, an interrupt is generated to notify the

microprocessor to feed in the data. The transfer of data between the microprocessor

and the DC can be done in Programmed I/O (PIO) mode or in DMA mode.

11.1 DC data transfer operation

The following session explains how the DC of an ISP1161A handles an IN data

transfer and an OUT data transfer. In the Device mode, ISP1161A acts as a USB

device: an IN data transfer means transfer from ISP1161A to an external USB Host

(through the upstream port) and an OUT transfer means transfer from external USB

Host to ISP1161A.

11.1.1 IN data transfer

•The arrival of the IN token is detected by the SIE by decoding the PID.

•The SIE also checks for the device number and endpoint number and veriﬁes

whether they are acceptable.

•If the endpoint is enabled, the SIE checks the contents of the DcEndpointStatus

phase, otherwise a Not Acknowledge (NAK) handshake is sent.

•After the data phase, the SIE expects a handshake (ACK) from the host (except for

ISO endpoints).

•On receiving the handshake (ACK), the SIE updates the contents of the

DcEndpointStatus register and the DcInterrupt register, which in turn generates an

interrupt to the microprocessor. For ISO endpoints, the interrupt register is updated

as soon as data is sent because there is no handshake phase.

•On receiving an interrupt, the microprocessor reads the DcInterrupt register. It will

know which endpoint has generated the interrupt and reads the contents of the

corresponding DcEndpointStatus register. If the buffer is empty, it ﬁlls up the buffer,

so that data can be sent by the SIE at the next IN token phase.

11.1.2 OUT data transfer

•The arrival of the OUT token is detected by the SIE by decoding the PID.

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•The SIE also checks for the device number and endpoint number and veriﬁes

whether they are acceptable.

•If the endpoint is enabled, the SIE checks the contents of the DcEndpointStatus

data phase, otherwise a NAK handshake is sent.

•After the data phase, the SIE sends a handshake (ACK) to the host (except for ISO

endpoints).

•The SIE updates the contents of the DcEndpointStatus register and the

DcInterrupt register, which in turn generates an interrupt to the microprocessor.

For ISO endpoints, the interrupt register is updated as soon as data is received

because there is no handshake phase.

•On receiving interrupt, the microprocessor reads the DcInterrupt register. It will

know which endpoint has generated the interrupt and reads the content of the

corresponding DcEndpointStatus register. If the buffer is full, it empties the buffer,

so that data can be received by the SIE at the next OUT token phase.

11.2 Device DMA transfer

11.2.1 DMA for IN endpoint (internal DC to external USB host)

When the internal DMA handler is enabled and at least one buffer (Ping or Pong) is

free, the DREQ2 line is asserted. The external DMA controller then starts negotiating

for control of the bus. As soon as it has access, it asserts the DACK2 line and starts

writing data. The burst length is programmable. When the number of bytes equal to

the burst length has been written, the DREQ2 line is de-asserted. As a result, the

DMA controller de-asserts the DACK2 line and releases the bus. At that moment the

whole cycle restarts for the next burst.

When the buffer is full, the DREQ2 line will be de-asserted and the buffer is validated

(which means that it will be sent to the host when the next IN token comes in). When

the DMA transfer is terminated, the buffer is also validated (even if it is not full). A

DMA transfer is terminated when any of the following conditions are met:

•the DMA count is complete

•DMAEN = 0

•the DMA controller asserts EOT.

11.2.2 DMA for OUT endpoint (external USB host to internal DC)

When the internal DMA handler is enabled and at least one buffer is full, the DREQ2

line is asserted. The external DMA controller then starts negotiating for control of the

bus, and as soon as it has access, it asserts the DACK2 line and starts reading the

data. The burst length is programmable. When the number of bytes equal to the burst

length has been read, the DREQ2 line is de-asserted. As a result, the DMA controller

de-asserts the DACK2 line and releases the bus. At that moment the whole cycle

restarts for the next burst. When all data are read, the DREQ2 line will be de-asserted

and the buffer is cleared (which means that it can be overwritten when a new packet

comes in).

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A DMA transfer is terminated when any of the following conditions are met:

•The DMA count is complete

•DMAEN = 0

•The DMA controller asserts EOT.

When the DMA transfer is terminated, the buffer is also cleared (even if the data is not

completely read) and the DMA handler is disabled automatically. For the next DMA

transfer, the DMA controller as well as the DMA handler must be re-enabled.

11.3 Endpoint descriptions

11.3.1 Endpoints with programmable FIFO size

Each USB device is logically composed of several independent endpoints. An

endpoint acts as a terminus of a communication ﬂow between the host and the

device. At design time each endpoint is assigned a unique number (endpoint

identiﬁer, see Ta bl e 6 6 ). The combination of the device address (given by the host

during enumeration), the endpoint number and the transfer direction allows each

endpoint to be uniquely referenced.

The DC has 16 endpoints: endpoint 0 (control IN and OUT) plus 14 conﬁgurable

endpoints, which can be individually deﬁned as interrupt/bulk/isochronous, IN or OUT.

Each enabled endpoint has an associated FIFO, which can be accessed either via

the Programmed I/O interface or via DMA.

11.3.2 Endpoint access

Ta b l e 6 6 lists the endpoint access modes and programmability. All endpoints support

I/O mode access. Endpoints 1 to 14 also support DMA access. DC FIFO DMA

access is selected and enabled via bits EPIDX[3:0] and DMAEN of the

DcDMAConﬁguration register. A detailed description of the DC DMA operation is

given in Section 12.

[1] The total amount of FIFO storage allocated to enabled endpoints must not exceed 2462 bytes.

[2] IN: input for the USB host (ISP1161A transmits); OUT: output from the USB host (ISP1161A receives). The data ﬂow direction is

determined by bit EPDIR in the DcEndpointConﬁguration register; see Section 13.1.1

11.3.3 Endpoint FIFO size

The size of the FIFO determines the maximum packet size that the hardware can

support for a given endpoint. Only enabled endpoints are allocated space in the

shared FIFO storage, disabled endpoints have zero bytes. Ta b l e 6 7 lists the

programmable FIFO sizes.

The following bits in the DcEndpointConﬁguration register (ECR) affect FIFO

allocation:

Table 66: Endpoint access and programmability

Endpoint

identiﬁer

FIFO size (bytes)[1] Double

buffering

I/O mode

access

DMA mode

access

Endpoint type

0 64 (ﬁxed) no yes no control OUT[2]

0 64 (ﬁxed) no yes no control IN[2]

1 to 14 programmable supported supported supported programmable

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•Endpoint enable bit (FIFOEN)

•Size bits of an enabled endpoint (FFOSZ[3:0])

•Isochronous bit of an enabled endpoint (FFOISO).

Remark: Register changes that affect the allocation of the shared FIFO storage

among endpoints must not be made while valid data is present in any FIFO of the

enabled endpoints. Such changes will render all FIFO contents undeﬁned.

Each programmable FIFO can be conﬁgured independently via its ECR, but the total

physical size of all enabled endpoints (IN plus OUT) must not exceed 2462 bytes

(512 bytes for non-isochronous FIFOs).

Ta b l e 6 8 shows an example of a conﬁguration ﬁtting in the maximum available space

of 2462 bytes. The total number of logical bytes in the example is 1311. The physical

storage capacity used for double buffering is managed by the device hardware and is

transparent to the user.

Table 67: Programmable FIFO size

FFOSZ[3:0] Non-isochronous Isochronous

0000 8 bytes 16 bytes

0001 16 bytes 32 bytes

0010 32 bytes 48 bytes

0011 64 bytes 64 bytes

0100 reserved 96 bytes

0101 reserved 128 bytes

0110 reserved 160 bytes

0111 reserved 192 bytes

1000 reserved 256 bytes

1001 reserved 320 bytes

1010 reserved 384 bytes

1011 reserved 512 bytes

1100 reserved 640 bytes

1101 reserved 768 bytes

1110 reserved 896 bytes

1111 reserved 1023 bytes

Table 68: Memory conﬁguration example

Physical size

(bytes)

Logical size

(bytes)

Endpoint description

64 64 control IN (64 byte ﬁxed)

64 64 control OUT (64 byte ﬁxed)

2046 1023 double-buffered 1023-byte isochronous endpoint

16 16 16-byte interrupt OUT

16 16 16-byte interrupt IN

128 64 double-buffered 64-byte bulk OUT

128 64 double-buffered 64-byte bulk IN

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11.3.4 Endpoint initialization

In response to the standard USB request, Set Interface, the ﬁrmware must program

all 16 ECRs of the ISP1161A’s DC in sequence (see Ta bl e 6 6 ), whether the

endpoints are enabled or not. The hardware will then automatically allocate FIFO

storage space.

If all endpoints have been conﬁgured successfully, the ﬁrmware must return an empty

packet to the control IN endpoint to acknowledge success to the host. If there are

errors in the endpoint conﬁguration, the ﬁrmware must stall the control IN endpoint.

When reset by hardware or via the USB bus, the ISP1161A’s DC disables all

endpoints and clears all ECRs, except for the control endpoint which is ﬁxed and

always enabled.

Endpoint initialization can be done at any time; however, it is valid only after

enumeration.

11.3.5 Endpoint I/O mode access

When an endpoint event occurs (a packet is transmitted or received), the associated

endpoint interrupt bits (EPn) of the DcInterrupt register will be set by the SIE. The

ﬁrmware then responds to the interrupt and selects the endpoint for processing.

The endpoint interrupt bit will be cleared by reading the DcEndpointStatus register

(ESR). The ESR also contains information on the status of the endpoint buffer.

For an OUT (= receive) endpoint, the packet length and packet data can be read from

ISP1161A’s DC using the Read Buffer command. When the whole packet has been

read, the ﬁrmware sends a Clear Buffer command to enable the reception of new

packets.

For an IN (= transmit) endpoint, the packet length and data to be sent can be written

to ISP1161A’s DC using the Write Buffer command. When the whole packet has been

written to the buffer, the ﬁrmware sends a Validate Buffer command to enable data

transmission to the host.

11.3.6 Special actions on control endpoints

Control endpoints require special ﬁrmware actions. The arrival of a SETUP packet

ﬂushes the IN buffer and disables the Validate Buffer and Clear Buffer commands for

the control IN and OUT endpoints. The microcontroller needs to re-enable these

commands by sending an Acknowledge Setup command.

This ensures that the last SETUP packet stays in the buffer and that no packets can

be sent back to the host until the microcontroller has explicitly acknowledged that it

has seen the SETUP packet.

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11.4 Suspend and resume

11.4.1 Suspend conditions

The ISP1161A DC detects a USB suspend status when a constant idle state is

present on the USB bus for more than 3 ms.

The bus-powered devices that are suspended must not consume more than 500 µA

of current. This is achieved by shutting down power to system components or

supplying them with a reduced voltage.

The steps leading up to suspend status are as follows:

1. On detecting a wakeup-to-suspend transition, the ISP1161A DC sets

bit SUSPND in the DcInterrupt register. This will generate an interrupt if

bit IESUSP in the DcInterruptEnable register is set.

2. When the ﬁrmware detects a suspend condition, it must prepare all system

components for the suspend state:

a. All signals connected to the ISP1161A DC must enter appropriate states to

meet the power consumption requirements of the suspend state.

b. All input pins of the ISP1161A DC must have a CMOS LOW or HIGH level.

3. In the interrupt service routine, the ﬁrmware must check the current status of the

USB bus. When bit BUSTATUS in the DcInterrupt register is logic 0, the USB bus

has left the suspend mode and the process must be aborted. Otherwise, the next

step can be executed.

4. To meet the suspend current requirements for a bus-powered device, the internal

clocks must be switched off by clearing bit CLKRUN in the

DcHardwareConﬁguration register.

5. When the ﬁrmware has set and cleared bit GOSUSP in the DcMode register, the

ISP1161A enters the suspend state. In powered-off application, the ISP1161A

DC asserts output SUSPEND and switches off the internal clocks after 2 ms.

Figure 38 shows a typical timing diagram.

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In Figure 38:

•A: indicates the point at which the USB bus enters the idle state.

•B: indicates resume condition, which can be a 20 ms K-state on the USB bus, a

HIGH level on pin D_WAKEUP, or a LOW level on pin CS.

•C: indicates remote wake-up. The ISP1161A will drive a K-state on the USB bus

for 10 ms after pin D_WAKEUP goes HIGH or pin CS goes LOW.

•D: after detecting the suspend interrupt, set and clear bit GOSUSP in the DcMode

Powered-off application: Figure 39 shows a typical bus-powered modem

application using the ISP1161A. The SUSPEND output switches off power to the

microcontroller and other external circuits during the suspend state. The ISP1161A

DC is woken up through the USB bus (global resume) or by the ring detection circuit

on the telephone line.

Fig 38. Suspend and resume timing.

004aaa359

INT_N

> 5 ms

suspend

interrupt

USB BUS

GOSUSP

WAKEUP

SUSPEND

idle state

10 ms

K-state

> 3 ms

1.8 ms to 2.2 ms

0.5 ms to 3.5 ms

resume

interrupt

Fig 39. SUSPEND and WAKEUP signals in a powered-off modem application.

WAKEUP

8031

RST

RING DETECTION

ISP1161A

USB

VBUS

VCC

LINE

004aaa674

SUSPEND

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11.4.2 Resume conditions

A wake-up from the suspend state is initiated either by the USB host or by the

application:

•USB host: drives a K-state on the USB bus (global resume)

•Application: remote wake-up through a HIGH level on input WAKEUP or a LOW

level on input CS, if enabled using bit WKUPCS in the DcHardwareConﬁguration

The steps of a wake-up sequence are as follows:

1. The internal oscillator and the PLL multiplier are re-enabled. When stabilized, the

clock signals are routed to all internal circuits of the ISP1161A.

2. The SUSPEND output is deasserted, and bit RESUME in the DcInterrupt register

is set. This will generate an interrupt if bit IERESM in the DcInterruptEnable

3. Maximum 15 ms after starting the wake-up sequence, the ISP1161A DC

resumes its normal functionality.

4. In case of a remote wake-up, the ISP1161A DC drives a K-state on the USB bus

for 10 ms.

5. Following the deassertion of output SUSPEND, the application restores itself and

other system components to the normal operating mode.

6. After wake-up, the internal registers of the ISP1161A DC are write-protected to

prevent corruption by inadvertent writing during power-up of external

components. The ﬁrmware must send an Unlock Device command to the

ISP1161A DC to restore its full functionality.

11.4.3 Control bits in suspend and resume

Table 69: Summary of control bits

DcInterrupt SUSPND a transition from awake to the suspend state was detected

BUSTATUS monitors USB bus status (logic 1 = suspend); used when

interrupt is serviced

RESUME a transition from suspend to the resume state was detected

DcInterrupt

Enable

IESUSP enables output INT to signal the suspend state

IERESM enables output INT to signal the resume state

DcMode SOFTCT enables SoftConnect pull-up resistor to USB bus

GOSUSP a HIGH-to-LOW transition enables the suspend state

DcHardware

Conﬁguration

EXTPUL selects internal (SoftConnect) or external pull-up resistor

WKUPCS enables wake-up on LOW level of input CS

PWROFF selects powered-off mode during the suspend state

DcUnlock all sending data AA37H unlocks the internal registers for

writing after a resume

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12. DC DMA transfer

Direct Memory Access (DMA) is a method to transfer data from one location to

another in a computer system, without intervention of the Central Processor Unit

(CPU). Many different implementations of DMA exist. The ISP1161A DC supports

two methods:

•8237 compatible mode: based on the DMA subsystem of the IBM personal

computers (PC, AT and all its successors and clones); this architecture uses the

Intel 8237 DMA controller and has separate address spaces for memory and I/O

•DACK-only mode: based on the DMA implementation in some embedded RISC

processors, which has a single address space for both memory and I/O.

ISP1161A’s DC supports DMA transfer for all 14 conﬁgurable endpoints (see

Ta b l e 6 6 ). Only one endpoint at a time can be selected for DMA transfer. The DMA

operation of ISP1161A’s DC can be interleaved with normal I/O mode access to other

endpoints.

The following features are supported:

•Single-cycle or burst transfers (up to 16 bytes per cycle)

•Programmable transfer direction (read or write)

•Multiple End-Of-Transfer (EOT) sources: external pin, internal conditions,

short/empty packet

•Programmable signal levels on pins DREQ2 and EOT.

12.1 Selecting an endpoint for DMA transfer

The target endpoint for DMA access is selected via bits EPDIX[3:0] in the

DcDMAConﬁguration register, as shown in Ta b l e 7 0 . The transfer direction (read or

write) is automatically set by bit EPDIR in the associated ECR, to match the selected

endpoint type (OUT endpoint: read; IN endpoint: write).

Asserting input DACK2 automatically selects the endpoint speciﬁed in the

DcDMAConﬁguration register, regardless of the current endpoint used for I/O mode

access.

Table 70: Endpoint selection for DMA transfer

Endpoint

identiﬁer

EPIDX[3:0] Transfer direction

EPDIR = 0 EPDIR = 1

1 0010 OUT: read IN: write

2 0011 OUT: read IN: write

3 0100 OUT: read IN: write

4 0101 OUT: read IN: write

5 0110 OUT: read IN: write

6 0111 OUT: read IN: write

7 1000 OUT: read IN: write

8 1001 OUT: read IN: write

9 1010 OUT: read IN: write

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12.2 8237 compatible mode

The 8237 compatible DMA mode is selected by clearing bit DAKOLY in the

DcHardwareConﬁguration register (see Ta bl e 8 2 ). The pin functions for this mode are

shown in Ta bl e 7 1 .

The DMA subsystem of an IBM compatible PC is based on the Intel 8237 DMA

controller. It operates as a ‘ﬂy-by’ DMA controller: the data is not stored in the DMA

controller, but it is transferred between an I/O port and a memory address. A typical

example of ISP1161A’s DC in 8237 compatible DMA mode is given in Figure 40.

The 8237 has two control signals for each DMA channel: DREQ (DMA Request) and

DACK (DMA Acknowledge). General control signals are HRQ (Hold Request) and

HLDA (Hold Acknowledge). The bus operation is controlled via MEMR (Memory

Read), MEMW (Memory Write), IOR (I/O read) and IOW (I/O write).

10 1011 OUT: read IN: write

11 1100 OUT: read IN: write

12 1101 OUT: read IN: write

13 1110 OUT: read IN: write

14 1111 OUT: read IN: write

Table 70: Endpoint selection for DMA transfer

…continued

Endpoint

identiﬁer

EPIDX[3:0] Transfer direction

EPDIR = 0 EPDIR = 1

Table 71: 8237 compatible mode: pin functions

Symbol Description I/O Function

DREQ2 DC’s DMA request O ISP1161A’s DC requests a DMA transfer

DACK2 DC’s DMA

acknowledge

I DMA controller conﬁrms the transfer

EOT end of transfer I DMA controller terminates the transfer

RD read strobe I instructs ISP1161A’s DC to put data on

the bus

WR write strobe I instructs ISP1161A’s DC to get data from

the bus

Fig 40. ISP1161A’s device controller in the 8237 compatible DMA mode.

D0 to D15

CPU

004aaa093

RAM

ISP1161A

DEVICE

CONTROLLER

DMA

CONTROLLER

8237

DREQ2

DACK2

DREQ HRQ

HLDA

HRQ

HLDA

DACK

IOR

IOW

MEMR

MEMW

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 87 of 134

The following example shows the steps which occur in a typical DMA transfer:

1. ISP1161A’s DC receives a data packet in one of its endpoint FIFOs; the packet

must be transferred to memory address 1234H.

2. ISP1161A’s DC asserts the DREQ2 signal requesting the 8237 for a DMA

transfer.

3. The 8237 asks the CPU to release the bus by asserting the HRQ signal.

4. After completing the current instruction cycle, the CPU places the bus control

signals (MEMR, MEMW, IOR and IOW) and the address lines in three-state and

asserts HLDA to inform the 8237 that it has control of the bus.

5. The 8237 now sets its address lines to 1234H and activates the MEMW and IOR

control signals.

6. The 8237 asserts DACK to inform ISP1161A’s DC that it will start a DMA transfer.

7. ISP1161A’s DC now places the word to be transferred on the data bus lines,

because its RD signal was asserted by the 8237.

8. The 8237 waits one DMA clock period and then de-asserts MEMW and IOR. This

latches and stores the word at the desired memory location. It also informs

ISP1161A’s DC that the data on the bus lines has been transferred.

9. ISP1161A’s DC de-asserts the DREQ2 signal to indicate to the 8237 that DMA is

no longer needed. In Single cycle mode this is done after each word, in Burst

mode following the last transferred word of the DMA cycle.

10. The 8237 de-asserts the DACK output indicating that ISP1161A’s DC must stop

placing data on the bus.

11. The 8237 places the bus control signals (MEMR, MEMW, IOR and IOW) and the

address lines in three-state and de-asserts the HRQ signal, informing the CPU

that it has released the bus.

12. The CPU acknowledges control of the bus by de-asserting HLDA. After activating

the bus control lines (MEMR, MEMW, IOR and IOW) and the address lines, the

CPU resumes the execution of instructions.

For a typical bulk transfer the above process is repeated, once for each byte. After

each byte the address register in the DMA controller is incremented and the byte

counter is decremented. When using 16-bit DMA the number of transfers is 32, and

address incrementing and byte counter decrementing is done by 2 for each word.

12.3 DACK-only mode

The DACK-only DMA mode is selected by setting bit DAKOLY in the

DcHardwareConﬁguration register (see Ta bl e 8 2 ). The pin functions for this mode are

shown in Ta bl e 7 2 . A typical example of ISP1161A’s DC in DACK-only DMA mode is

given in Figure 41.

Table 72: DACK-only mode: pin functions

Symbol Description I/O Function

DREQ2 DC’s DMA request O ISP1161A DC requests a DMA transfer

DACK2 DC’s DMA

acknowledge

I DMA controller conﬁrms the transfer;

also functions as data strobe

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 88 of 134

In DACK-only mode ISP1161A’s DC uses the DACK2 signal as a data strobe. Input

signals RD and WR are ignored. This mode is used in CPU systems that have a

single address space for memory and I/O access. Such systems have no separate

MEMW and MEMR signals: the RD and WR signals are also used as memory data

strobes.

12.4 End-Of-Transfer conditions

12.4.1 Bulk endpoints

A DMA transfer to/from a bulk endpoint can be terminated by any of the following

conditions (bit names refer to the DcDMAConﬁguration register, see Ta b l e 8 6 ):

•An external End-Of-Transfer signal occurs on input EOT

•The DMA transfer completes as programmed in the DcDMACounter register

(CNTREN = 1)

•A short packet is received on an enabled OUT endpoint (SHORTP = 1)

•DMA operation is disabled by clearing bit DMAEN.

External EOT: When reading from an OUT endpoint, an external EOT will stop the

DMA operation and clear any remaining data in the current FIFO. For a double-

buffered endpoint the other (inactive) buffer is not affected.

When writing to an IN endpoint, an EOT will stop the DMA operation and the data

packet in the FIFO (even if it is smaller than the maximum packet size) will be sent to

the USB host at the next IN token.

DcDMACounter register: An EOT from the DcDMACounter register is enabled by

setting bit CNTREN in the DcDMAConﬁguration register. The ISP1161A has a 16-bit

DcDMACounter register, which speciﬁes the number of bytes to be transferred. When

DMA is enabled (DMAEN = 1), the internal DMA counter is loaded with the value from

EOT End-Of-Transfer I DMA controller terminates the transfer

RD read strobe I not used

WR write strobe I not used

Fig 41. ISP1161A’s device controller in DACK-only DMA mode.

Table 72: DACK-only mode: pin functions

…continued

Symbol Description I/O Function

RAM

ISP1161A

DEVICE

CONTROLLER

DMA

CONTROLLER CPU

DREQ2

DACK2

HRQ

HLDA

HRQ

HLDA

DREQ

DACK

004aaa094

D0 to D15

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 89 of 134

the DcDMACounter register. When the internal counter completes the transfer as

programmed in the DcDMACounter, an EOT condition is generated and the DMA

operation stops.

Short packet: Normally, the transfer byte count must be set via a control endpoint

before any DMA transfer takes place. When a short packet has been enabled as EOT

indicator (SHORTP = 1), the transfer size is determined by the presence of a short

packet in the data. This mechanism permits the use of a fully autonomous data

transfer protocol.

When reading from an OUT endpoint, reception of a short packet at an OUT token

will stop the DMA operation after transferring the data bytes of this packet.

[1] The DMA transfer stops. However, no interrupt is generated.

12.4.2 Isochronous endpoints

A DMA transfer to/from an isochronous endpoint can be terminated by any of the

following conditions (bit names refer to the DcDMAConﬁguration register, see

Ta b l e 8 6 ):

•An external End-Of-Transfer signal occurs on input EOT

•The DMA transfer completes as programmed in the DcDMACounter register

(CNTREN = 1)

•An End-Of-Packet (EOP) signal is detected

•DMA operation is disabled by clearing bit DMAEN.

Table 73: Summary of EOT conditions for a bulk endpoint

EOT condition OUT endpoint IN endpoint

EOT input EOT is active EOT is active

DcDMACounter register transfer completes as

programmed in the

DcDMACounter register

transfer completes as

programmed in the

DcDMACounter register

Short packet short packet is received and

transferred

counter reaches zero in the

middle of the buffer

DMAEN bit in

DcDMAConﬁguration register

DMAEN = 0[1] DMAEN = 0[1]

Table 74: Recommended EOT usage for isochronous endpoints

EOT condition OUT endpoint IN endpoint

EOT input active do not use preferred

DMA Counter register zero do not use preferred

End-Of-Packet preferred do not use

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 90 of 134

13. DC commands and registers

The functions and registers of ISP1161A’s DC are accessed via commands, which

consist of a command code followed by optional data bytes (read or write action). An

overview of the available commands and registers is given in Ta bl e 7 5 .

A complete access consists of two phases:

1. Command phase: when address bit A0 = 1, the DC interprets the data on the

lower byte of the bus (bits D7 to D0) as a command code. Commands without a

data phase are executed immediately.

2. Data phase (optional): when address bit A0 = 0, the DC transfers the data on

the bus to or from a register or endpoint FIFO. Multi-byte registers are accessed

least signiﬁcant byte/word ﬁrst.

As the ISP1161A DC’s data bus is 16 bits wide:

•The upper byte (bits D15 to D8) in command phase, or the undeﬁned byte in data

phase and is ignored.

•The access of registers is word-aligned: byte access is not allowed.

•If the packet length is odd, the upper byte of the last word in an IN endpoint buffer

is not transmitted to the host. When reading from an OUT endpoint buffer, the

upper byte of the last word must be ignored by the ﬁrmware. The packet length is

stored in the ﬁrst 2 bytes of the endpoint buffer.

Table 75: DC command and register summary

Name Destination Code (Hex) Transaction[1]

Initialization commands

Write Control OUT Conﬁguration DcEndpointConﬁguration register

endpoint 0 OUT

20 write 1 word

Write Control IN Conﬁguration DcEndpointConﬁguration register

endpoint 0 IN

21 write 1 word

Write Endpoint n Conﬁguration

(n = 1 to 14)

DcEndpointConﬁguration register

endpoint 1 to 14

22 to 2F write 1 word

Read Control OUT Conﬁguration DcEndpointConﬁguration register

endpoint 0 OUT

30 read 1 word

Read Control IN Conﬁguration DcEndpointConﬁguration register

endpoint 0 IN

31 read 1 word

Read Endpoint n Conﬁguration

(n = 1 to 14)

DcEndpointConﬁguration register

endpoint 1 to 14

32 to 3F read 1 word

Write/Read Device Address DcAddress register B6/B7 write/read 1 word

Write/Read DcMode register DcMode register B8/B9 write/read 1 word

Write/Read Hardware Conﬁguration DcHardwareConﬁguration register BA/BB write/read 1 word

Write/Read DcInterruptEnable

DcInterruptEnable register C2/C3 write/read 2 words

Write/Read DMA Conﬁguration DcDMAConﬁguration register F0/F1 write/read 1 word

Write/Read DMA Counter DcDMACounter register F2/F3 write/read 1 word

Reset Device resets all registers F6 -

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 91 of 134

Data ﬂow commands

Write Control OUT Buffer illegal: endpoint is read-only (00) -

Write Control IN Buffer FIFO endpoint 0 IN 01 N ≤64 bytes

Write Endpoint n Buffer

(n = 1 to 14)

FIFO endpoint 1 to 14

(IN endpoints only)

02 to 0F isochronous: N ≤1023 bytes

interrupt/bulk: N ≤64 bytes

Read Control OUT Buffer FIFO endpoint 0 OUT 10 N ≤64 bytes

Read Control IN Buffer illegal: endpoint is write-only (11) -

Read Endpoint n Buffer

(n = 1 to 14)

FIFO endpoint 1 to 14

(OUT endpoints only)

12 to 1F isochronous:

N≤1023 bytes[6]

interrupt/bulk: N ≤64 bytes

Stall Control OUT Endpoint Endpoint 0 OUT 40 -

Stall Control IN Endpoint Endpoint 0 IN 41 -

Stall Endpoint n

(n = 1 to 14)

Endpoint 1 to 14 42 to 4F -

Read Control OUT Status DcEndpointStatus register

endpoint 0 OUT

50 read 1 word

Read Control IN Status DcEndpointStatus register

endpoint 0 IN

51 read 1 word

Read Endpoint n Status

(n = 1 to 14)

DcEndpointStatus register n

endpoint 1 to 14

52 to 5F read 1 word

Validate Control OUT Buffer illegal: IN endpoints only[2] (60) -

Validate Control IN Buffer FIFO endpoint 0 IN[2] 61 none

Validate Endpoint n Buffer

(n = 1 to 14)

FIFO endpoint 1 to 14

(IN endpoints only)[2]

62 to 6F none

Clear Control OUT Buffer FIFO endpoint 0 OUT 70 none

Clear Control IN Buffer illegal[3] (71) -

Clear Endpoint n Buffer

(n = 1 to 14)

FIFO endpoint 1 to 14

(OUT endpoints only)[3]

72 to 7F none

Unstall Control OUT Endpoint Endpoint 0 OUT 80 -

Unstall Control IN Endpoint Endpoint 0 IN 81 -

Unstall Endpoint n

(n = 1 to 14)

Endpoint 1 to 14 82 to 8F -

Check Control OUT Status[4] DcEndpointStatusImage register

endpoint 0 OUT

D0 read 1 word

Check Control IN Status[4] DcEndpointStatusImage register

endpoint 0 IN

D1 read 1 word

Check Endpoint n Status

(n = 1 to 14)[4]

DcEndpointStatusImage register n

endpoint 1 to 14

D2 to DF read 1 word

Acknowledge Setup Endpoint 0 IN and OUT F4 none

General commands

Read Control OUT Error Code DcErrorCode register

endpoint 0 OUT

A0 read 1 word [5]

Read Control IN Error Code DcErrorCode register

endpoint 0 IN

A1 read 1 word [5]

Table 75: DC command and register summary

…continued

Name Destination Code (Hex) Transaction[1]

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 92 of 134

[1] With N representing the number of bytes, the number of words for 16-bit bus width is: (N + 1) DIV 2.

[2] Validating an OUT endpoint buffer causes unpredictable behavior of ISP1161A’s DC.

[3] Clearing an IN endpoint buffer causes unpredictable behavior of ISP1161A’s DC.

[4] Reads a copy of the DcStatus register: executing this command does not clear any status bits or interrupt bits.

[5] When accessing an 8-bit register in 16-bit mode, the upper byte is invalid.

[6] During isochronous transfer in 16-bit mode, because N ≤1023, the ﬁrmware must take care of the upper byte.

13.1 Initialization commands

Initialization commands are used during the enumeration process of the USB

network. These commands are used to conﬁgure and enable the embedded

endpoints. They also serve to set the USB assigned address of ISP1161A’s DC and

to perform a device reset.

13.1.1 DcEndpointConﬁguration register (R/W: 30H–3FH/20H–2FH)

This command is used to access the DcEndpointConﬁguration register (ECR) of the

target endpoint. It deﬁnes the endpoint type (isochronous or bulk/interrupt), direction

(OUT/IN), FIFO size and buffering scheme. It also enables the endpoint FIFO. The

The allocation of FIFO memory only takes place after all 16 endpoints have been

conﬁgured in sequence (from endpoint 0 OUT to endpoint 14). Although the control

endpoints have ﬁxed conﬁgurations, they must be included in the initialization

sequence and be conﬁgured with their default values (see Ta b l e 6 6 ). Automatic FIFO

allocation starts when endpoint 14 has been conﬁgured.

Remark: If any change is made to an endpoint conﬁguration which affects the

allocated memory (size, enable/disable), the FIFO memory contents of all endpoints

becomes invalid. Therefore, all valid data must be removed from enabled endpoints

before changing the conﬁguration.

Code (Hex): 20 to 2F — write (control OUT, control IN, endpoint 1 to 14)

Code (Hex): 30 to 3F — read (control OUT, control IN, endpoint 1 to 14)

Transaction — write/read 1 word

Read Endpoint n Error Code

(n = 1 to 14)

DcErrorCode register

endpoint 1 to 14

A2 to AF read 1 word [5]

Unlock Device all registers with write access B0 write 1 word

Write/Read DcScratch register DcScratch register B2/B3 write/read 1 word

Read Frame Number DcFrameNumber register B4 read 1 word

Read Chip ID DcChipID register B5 read 1 word

Read DcInterrupt register DcInterrupt register C0 read 2 words

Table 75: DC command and register summary

…continued

Name Destination Code (Hex) Transaction[1]

Table 76: DcEndpointConﬁguration register: bit allocation

Bit 76543210

Symbol FIFOEN EPDIR DBLBUF FFOISO FFOSZ[3:0]

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 93 of 134

13.1.2 DcAddress register (R/W: B7H/B6H)

This command is used to set the USB assigned address in the DcAddress register

and enable the USB device. The DcAddress register bit allocation is shown in

Ta b l e 7 8 .

A USB bus reset sets the device address to 00H (internally) and enables the device.

The value of the DcAddress register (accessible by the microcontroller) is not altered

by the bus reset. In response to the standard USB request, Set Address, the ﬁrmware

must issue a Write Device Address command, followed by sending an empty packet

to the host. The new device address is activated when the host acknowledges the

empty packet.

Code (Hex): B6/B7 — write/read DcAddress register

Transaction — write/read 1 word

13.1.3 DcMode register (R/W: B9H/B8H)

This command is used to access the ISP1161A’s DcMode register, which consists of

1 byte (for bit allocation: see Ta bl e 7 9 ). In 16-bit bus mode the upper byte is ignored.

The DcMode register controls the DMA bus width, resume and suspend modes,

interrupt activity and SoftConnect operation. It can be used to enable debug mode,

where all errors and Not Acknowledge (NAK) conditions will generate an interrupt.

Code (Hex): B8/B9 — write/read Mode register

Transaction — write/read 1 word

Table 77: DcEndpointConﬁguration register: bit description

Bit Symbol Description

7 FIFOEN Logic 1 indicates an enabled FIFO with allocated memory.

Logic 0 indicates a disabled FIFO (no bytes allocated).

6 EPDIR This bit deﬁnes the endpoint direction (0 = OUT, 1 = IN); it also

determines the DMA transfer direction (0 = read, 1 = write).

5 DBLBUF Logic 1 indicates that this endpoint has double buffering.

4 FFOISO Logic 1 indicates an isochronous endpoint. Logic 0 indicates a

bulk or interrupt endpoint.

3 to 0 FFOSZ[3:0] Selects the FIFO size according to Ta b l e 6 7

Table 78: DcAddress register: bit allocation

Bit 76543210

Symbol DEVEN DEVADR[6:0]

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Table 79: DcAddress register: bit description

Bit Symbol Description

7 DEVEN Logic 1 enables the device.

6 to 0 DEVADR[6:0] This ﬁeld speciﬁes the USB device address.

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 94 of 134

[1] Unchanged by a bus reset.

13.1.4 DcHardwareConﬁguration register (R/W: BBH/BAH)

This command is used to access the DcHardwareConﬁguration register, which

consists of 2 bytes. The ﬁrst (lower) byte contains the device conﬁguration and

control values, the second (upper) byte holds the clock control bits and the clock

division factor. The bit allocation is given in Ta b l e 8 2 . A bus reset will not change any

of the programmed bit values.

The DcHardwareConﬁguration register controls the connection to the USB bus, clock

activity and power supply during ‘suspend’ state, output clock frequency, DMA

operating mode and pin conﬁgurations (polarity, signalling mode).

Code (Hex): BA/BB — write/read DcHardwareConﬁguration register

Transaction — write/read 1 word

Table 80: DcMode register: bit allocation

Bit 76543210

Symbol DMAWD reserved GOSUSP reserved INTENA DBGMOD reserved SOFTCT

Reset 0[1] 0000

[1] 0[1] 0[1] 0[1]

Access R/W R/W R/W R/W R/W R/W R/W R/W

Table 81: DcMode register: bit description

Bit Symbol Description

7 DMAWD Logic 1 selects 16-bit DMA bus width (bus conﬁguration

modes 0 and 2). Logic 0 selects 8-bit DMA bus width. Bus reset

value: unchanged.

6 - reserved

5 GOSUSP Writing logic 1 followed by logic 0 will activate ‘suspend’ mode.

4 - reserved

3 INTENA Logic 1 enables all DC interrupts. Bus reset value: unchanged;

for details, see Section 8.6.3.

2 DBGMOD Logic 1 enables debug mode, where all NAKs and errors will

generate an interrupt. Logic 0 selects normal operation, where

interrupts are generated on every ACK (bulk endpoints) or after

every data transfer (isochronous endpoints).

Bus reset value: unchanged.

1 - reserved

0 SOFTCT Logic 1 enables SoftConnect (see Section 7.5). This bit is

ignored if EXTPUL = 1 in the DcHardwareConﬁguration register

(see Ta b l e 8 2 ). Bus reset value: unchanged.

Table 82: DcHardwareConﬁguration register: bit allocation

Bit 15 14 13 12 11 10 9 8

Symbol reserved EXTPUL NOLAZY CLKRUN CLKDIV[3:0]

Reset 00100011

Access R/W R/W R/W R/W R/W R/W R/W R/W

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 95 of 134

Bit 76543210

Symbol DAKOLY DRQPOL DAKPOL EOTPOL WKUPCS PWROFF INTLVL INTPOL

Reset 01000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Table 83: DcHardwareConﬁguration register: bit description

Bit Symbol Description

15 - reserved

14 EXTPUL Logic 1 indicates that an external 1.5 kΩpull-up resistor is used

on pin D+ and that SoftConnect is not used. Bus reset value:

unchanged.

13 NOLAZY Logic 1 disables output on pin CLKOUT of the LazyClock

frequency (100 kHz ±50 %) during ‘suspend’ state. Logic 0

causes pin CLKOUT to switch to LazyClock output after

approximately 2 ms delay, following the setting of bit GOSUSP

in the DcMode register. Bus reset value: unchanged.

12 CLKRUN Logic 1 indicates that the internal clocks are always running,

even during ‘suspend’ state. Logic 0 switches off the internal

oscillator and PLL, when they are not needed. During ‘suspend’

state this bit must be made logic 0 to meet the suspend current

requirements. The clock is stopped after a delay of

approximately 2 ms, following the setting of bit GOSUSP in the

DcMode register. Bus reset value: unchanged.

11 to 8 CLKDIV[3:0] This ﬁeld speciﬁes the clock division factor N, which controls the

clock frequency on output CLKOUT. The output frequency in

MHz is given by 48 / (N + 1). The clock frequency range is

3 MHz to 48 MHz (N=0to15). with a reset value of 12 MHz

(N = 3). The hardware design guarantees no glitches during

frequency change. Bus reset value: unchanged.

7 DAKOLY Logic 1 selects DACK-only DMA mode. Logic 0 selects

8237 compatible DMA mode. Bus reset value: unchanged.

6 DRQPOL Selects DREQ2 pin signal polarity (0 = active LOW, 1 = active

HIGH). Bus reset value: unchanged.

5 DAKPOL Selects DACK2 pin signal polarity (0 = active LOW).

Bus reset value: unchanged.

4 EOTPOL Selects EOT pin signal polarity (0 = active LOW, 1 = active

HIGH). Bus reset value: unchanged.

3 WKUPCS Logic 1 enables remote wake-up via a LOW level on input pin

CS (VBUS must be present for wake-up on CS).

Bus reset value: unchanged.

2 PWROFF Logic 1 enables powering-off during ‘suspend’ state. Output

D_SUSPEND pin is conﬁgured as a power switch control signal

for external devices (HIGH during ‘suspend’). This value should

always be initialized to logic 1. Bus reset value: unchanged.

1 INTLVL Selects the interrupt signalling mode on output pin INT2

(0 = level, 1 = pulsed). In pulsed mode an interrupt produces an

166 ns pulse. See Section 8.6.3 for details.

Bus reset value: unchanged.

0 INTPOL Selects INT2 pin signal polarity (0 = active LOW, 1 = active

HIGH). Bus reset value: unchanged.

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 96 of 134

13.1.5 DcInterruptEnable register (R/W: C3H/C2H)

This command is used to individually enable or disable interrupts from all endpoints,

as well as interrupts caused by events on the USB bus (SOF, SOF lost, EOT,

suspend, resume, reset). That is, if an interrupt event occurs while the interrupt is not

enabled, nothing will be seen on the interrupt pin. Even if you then enable the

interrupt during the interrupt event, there will still be no interrupt seen on the interrupt

pin, see Figure 42.

The DcInterrupt register will not register any interrupt, if it is not already enabled

using the DcInterruptEnable register. The DcInterruptEnable register is not an

Interrupt Mask register.

A bus reset will not change any of the programmed bit values.

The command accesses the DcInterruptEnable register, which consists of 4 bytes.

The bit allocation is given in Ta bl e 8 4 .

Remark: For details on interrupt control, see Section 8.6.3.

Code (Hex): C2/C3 — write/read DcInterruptEnable register

Transaction — write/read 2 words

Pin INT2: HIGH = de-assert; LOW = assert; INTENA = 1.

Fig 42. Interrupt pin waveform.

INT2 pin

interrupt

event

occurs

interrupt

event

occurs

DcInterruptEnable

disabled

DcInterruptEnable

enabled

interrupt is cleared

004aaa197

Table 84: DcInterruptEnable register: bit allocation

Bit 31 30 29 28 27 26 25 24

Symbol reserved

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 23 22 21 20 19 18 17 16

Symbol IEP14 IEP13 IEP12 IEP11 IEP10 IEP9 IEP8 IEP7

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 97 of 134

13.1.6 DcDMAConﬁguration register (R/W: F1H/F0H)

This command deﬁnes the DMA conﬁguration of ISP1161A’s DC and

enables/disables DMA transfers. The command accesses the DcDMAConﬁguration

will clear bit DMAEN (DMA disabled), all other bits remain unchanged.

Code (Hex): F0/F1 — write/read DMA Conﬁguration

Transaction — write/read 1 word

[1] Unchanged by a bus reset.

Bit 15 14 13 12 11 10 9 8

Symbol IEP6 IEP5 IEP4 IEP3 IEP2 IEP1 IEP0IN IEP0OUT

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 76543210

Symbol reserved SP_IEEOT IEPSOF IESOF IEEOT IESUSP IERESM IERST

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Table 85: DcInterruptEnable register: bit description

Bit Symbol Description

31 to 24 - reserved; must write logic 0

23 to 10 IEP14 to IEP1 Logic 1 enables interrupts from the indicated endpoint.

9 IEP0IN Logic 1 enables interrupts from the control IN endpoint.

8 IEP0OUT Logic 1 enables interrupts from the control OUT endpoint.

7 - reserved

6 SP_IEEOT Logic 1 enables interrupt upon detection of a short packet.

5 IEPSOF Logic 1 enables 1 ms interrupts upon detection of Pseudo SOF.

4 IESOF Logic 1 enables interrupt upon SOF detection.

3 IEEOT Logic 1 enables interrupt upon EOT detection.

2 IESUSP Logic 1 enables interrupt upon detection of ‘suspend’ state.

1 IERESM Logic 1 enables interrupt upon detection of a ‘resume’ state.

0 IERST Logic 1 enables interrupt upon detection of a bus reset.

Table 86: DcDMAConﬁguration register: bit allocation

Bit 15 14 13 12 11 10 9 8

Symbol CNTREN SHORTP reserved reserved reserved reserved reserved reserved

Reset 0[1] 0[1] 0[1] 0[1] 0[1] 0[1] 0[1] 0[1]

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 76543210

Symbol EPDIX[3:0] DMAEN reserved BURSTL[1:0]

Reset 0[1] 0[1] 0[1] 0[1] 000

[1] 0[1]

Access R/W R/W R/W R/W R/W R/W R/W R/W

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 98 of 134

For selecting an endpoint for device DMA transfer, see Section 11.2.

13.1.7 DcDMACounter register (R/W: F3H/F2H)

This command accesses the DcDMACounter register. The bit allocation is given in

Ta b l e 8 8 . Writing to the register sets the number of bytes for a DMA transfer. Reading

the register returns the number of remaining bytes in the current transfer. A bus reset

will not change the programmed bit values.

The internal DMA counter is automatically reloaded from the DcDMACounter register

when DMA is re-enabled (DMAEN = 1). See Section 13.1.6 for more details.

Code (Hex): F2/F3 — write/read DcDMACounter register

Transaction — write/read 1 word

Table 87: DcDMAConﬁguration register: bit description

Bit Symbol Description

15 CNTREN Logic 1 enables the generation of an EOT condition, when the

DcDMACounter register reaches zero. Bus reset value:

unchanged.

14 SHORTP Logic 1 enables short/empty packet mode. When receiving

(OUT endpoint) a short/empty packet an EOT condition is

generated. When transmitting (IN endpoint), this bit should be

cleared. Bus reset value: unchanged.

13 to 8 - reserved

7 to 4 EPDIX[3:0] Indicates the destination endpoint for DMA, see Ta bl e 7 0 .

3 DMAEN Writing logic 1 enables DMA transfer, logic 0 forces the end of

an ongoing DMA transfer. Reading this bit indicates whether

DMA is enabled (0 = DMA stopped, 1 = DMA enabled). This bit

is cleared by a bus reset.

2 - reserved

1 to 0 BURSTL[1:0] Selects the DMA burst length:

00 — single-cycle mode (1 byte)

01 — burst mode (4 bytes)

10 — burst mode (8 bytes)

11 — burst mode (16 bytes).

Bus reset value: unchanged.

Table 88: DcDMACounter register: bit allocation

Bit 15 14 13 12 11 10 9 8

Symbol DMACR[15:8]

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 76543210

Symbol DMACR[7:0]

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

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13.1.8 Reset Device (F6H)

This command resets the ISP1161A DC in the same way as an external hardware

reset via input RESET. All registers are initialized to their ‘reset’ values.

Code (Hex): F6 — reset the device

Transaction — none

13.2 Data ﬂow commands

Data ﬂow commands are used to manage the data transmission between the USB

endpoints and the system microprocessor. Much of the data ﬂow is initiated via an

interrupt to the microprocessor. The data ﬂow commands are used to access the

endpoints and determine whether the endpoint FIFOs contain valid data.

Remark: The IN buffer of an endpoint contains input data for the host, the OUT buffer

receives output data from the host.

13.2.1 Write/Read Endpoint Buffer (R/W: 10H,12H-1FH/01H–0FH)

This command is used to access endpoint FIFO buffers for reading or writing. First,

the buffer pointer is reset to the beginning of the buffer. Following the command, a

maximum of (M + 1) words can be written or read, with M given by (N +1) DIV 2, N

representing the size of the endpoint buffer. After each read/write action the buffer

pointer is automatically incremented by 2.

In DMA access, the ﬁrst word (the packet length) is skipped: transfers start at the

second word of the endpoint buffer. When reading, the ISP1161A DC can detect the

last word via the End of Packet (EOP) condition. When writing to a bulk/interrupt

endpoint, the endpoint buffer must be completely ﬁlled before sending the data to the

host. Exception: when a DMA transfer is stopped by an external EOT condition, the

current buffer content (full or not) is sent to the host.

Remark: Reading data after a Write Endpoint Buffer command or writing data after a

Read Endpoint Buffer command will cause unpredictable behavior of the ISP1161A

DC.

Code (Hex): 01 to 0F — write (control IN, endpoint 1 to 14)

Code (Hex): 10, 12 to 1F — read (control OUT, endpoint 1 to 14)

Transaction — write/read maximum (M + 1) words (isochronous endpoint: N ≤1023,

bulk/interrupt endpoint: N ≤32)

The data in the endpoint FIFO must be organized as shown in Ta bl e 9 0 . An example

of endpoint FIFO access is given Ta bl e 9 1 .

Table 89: DcDMACounter register: bit description

Bit Symbol Description

15 to 0 DMACR[15:0] DMA Counter register

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Full-speed USB single-chip host and device controller

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Remark: There is no protection against writing or reading past a buffer’s boundary or

against writing into an OUT buffer or reading from an IN buffer. Any of these actions

could cause an incorrect operation. Data residing in an OUT buffer are only

meaningful after a successful transaction. Exception: during DMA access of a

double-buffered endpoint, the buffer pointer automatically points to the secondary

buffer after reaching the end of the primary buffer.

13.2.2 DcEndpointStatus register (R: 50H–5FH)

This command is used to read the status of an endpoint FIFO. The command

accesses the DcEndpointStatus register, the bit allocation of which is shown in

Ta b l e 9 2 . Reading the DcEndpointStatus register will clear the interrupt bit set for the

corresponding endpoint in the DcInterrupt register (see Table 108).

All bits of the DcEndpointStatus register are read-only. Bit EPSTAL is controlled by

the Stall/Unstall commands and by the reception of a SETUP token (see

Section 13.2.3).

Code (Hex): 50 to 5F — read (control OUT, control IN, endpoint 1 to 14)

Transaction — read 1 word

Table 90: Endpoint FIFO organization

Word # Description

0 (lower byte) packet length (lower byte)

0 (upper byte) packet length (upper byte)

1 (lower byte) data byte 1

1 (upper byte) data byte 2

……

M = (N + 1) DIV 2 data byte N

Table 91: Example of endpoint FIFO access

A0 Phase Bus lines Word # Description

1 command D[7:0] - command code (00H to 1FH)

D[15:8] - ignored

0 data D[15:0] 0 packet length

0 data D[15:0] 1 data word 1 (data byte 2, data byte 1)

0 data D[15:0] 2 data word 2 (data byte 4, data byte 3)

……………

Table 92: DcEndpointStatus register: bit allocation

Bit 76543210

Symbol EPSTAL EPFULL1 EPFULL0 DATA_PID OVER

WRITE

SETUPT CPUBUF reserved

Reset 00000000

Access RRRRRRRR

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Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 101 of 134

13.2.3 Stall Endpoint/Unstall Endpoint (40H–4FH/80H—8FH)

These commands are used to stall or unstall an endpoint. The commands modify the

content of the DcEndpointStatus register (see Ta b l e 9 2 ).

A stalled control endpoint is automatically unstalled when it receives a SETUP token,

regardless of the packet content. If the endpoint should stay in its stalled state, the

microprocessor can re-stall it with the Stall Endpoint command.

When a stalled endpoint is unstalled (either by the Unstall Endpoint command or by

receiving a SETUP token), it is also re-initialized. This ﬂushes the buffer: if it is an

OUT buffer it waits for a DATA 0 PID, if it is an IN buffer it writes a DATA 0 PID.

Code (Hex): 40 to 4F — stall (control OUT, control IN, endpoint 1 to 14)

Code (Hex): 80 to 8F — unstall (control OUT, control IN, endpoint 1 to 14)

Transaction — none

13.2.4 Validate Endpoint Buffer (R/W: 6FH/61H)

This command signals the presence of valid data for transmission to the USB host, by

setting the Buffer Full ﬂag of the selected IN endpoint. This indicates that the data in

the buffer is valid and can be sent to the host, when the next IN token is received. For

a double-buffered endpoint this command switches the current FIFO for CPU access.

Remark: For special aspects of the control IN endpoint see Section 11.3.6.

Code (Hex): 61 to 6F — validate endpoint buffer (control IN, endpoint 1 to 14)

Transaction — none

Table 93: DcEndpointStatus register: bit description

Bit Symbol Description

7 EPSTAL This bit indicates whether the endpoint is stalled or not

(1 = stalled, 0 = not stalled).

Set to logic 1 by a Stall Endpoint command, cleared to logic 0 by

an Unstall Endpoint command. The endpoint is automatically

unstalled upon reception of a SETUP token.

6 EPFULL1 Logic 1 indicates that the secondary endpoint buffer is full.

5 EPFULL0 Logic 1 indicates that the primary endpoint buffer is full.

4 DATA_PID This bit indicates the data PID of the next packet (0 = DATA PID,

1 = DATA1 PID).

3 OVERWRITE This bit is set by hardware, logic 1 indicating that a new Setup

packet has overwritten the previous set-up information, before it

was acknowledged or before the endpoint was stalled. If writing

the set-up data has ﬁnished, this bit is cleared by a read action.

Firmware must check this bit before sending an Acknowledge

Setup command or stalling the endpoint. Upon reading logic 1,

the ﬁrmware must stop ongoing setup actions and wait for a new

Setup packet.

2 SETUPT Logic 1 indicates that the buffer contains a Setup packet.

1 CPUBUF This bit indicates which buffer is currently selected for CPU

access (0 = primary buffer, 1 = secondary buffer).

0 - reserved

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13.2.5 Clear Endpoint Buffer (70H, 72H–7FH)

This command unlocks and clears the buffer of the selected OUT endpoint, allowing

the reception of new packets. Reception of a complete packet causes the Buffer Full

ﬂag of an OUT endpoint to be set. Any subsequent packets are refused by returning a

NAK condition, until the buffer is unlocked using this command. For a double-buffered

endpoint this command switches the current FIFO for CPU access.

Remark: For special aspects of the control OUT endpoint see Section 11.3.6.

Code (Hex): 70, 72 to 7F — clear endpoint buffer (control OUT, endpoint 1 to 14)

Transaction — none

13.2.6 DcEndpointStatusImage register (D0H–DFH)

This command is used to check the status of the selected endpoint FIFO without

clearing any status or interrupt bits. The command accesses the

DcEndpointStatusImage register, which contains a copy of the DcEndpointStatus

Ta b l e 9 4 .

Code (Hex): D0 to DF — check status (control OUT, control IN, endpoint 1 to 14)

Transaction — write/read 1 word

Table 94: DcEndpointStatusImage register: bit allocation

Bit 76543210

Symbol EPSTAL EPFULL1 EPFULL0 DATA_PID OVER

WRITE

SETUPT CPUBUF reserved

Reset 00000000

Access RRRRRRRR

Table 95: DcEndpointStatusImage register: bit description

Bit Symbol Description

7 EPSTAL This bit indicates whether the endpoint is stalled or not

(1 = stalled, 0 = not stalled).

6 EPFULL1 Logic 1 indicates that the secondary endpoint buffer is full.

5 EPFULL0 Logic 1 indicates that the primary endpoint buffer is full.

4 DATA_PID This bit indicates the data PID of the next packet (0 = DATA PID,

1 = DATA1 PID).

3 OVERWRITE This bit is set by hardware, logic 1 indicating that a new Setup

packet has overwritten the previous set-up information, before it

was acknowledged or before the endpoint was stalled. If writing

the set-up data has ﬁnished, this bit is cleared by a read action.

Firmware must check this bit before sending an Acknowledge

Setup command or stalling the endpoint. Upon reading logic 1

the ﬁrmware must stop ongoing set-up actions and wait for a

new Setup packet.

2 SETUPT Logic 1 indicates that the buffer contains a Setup packet.

1 CPUBUF This bit indicates which buffer is currently selected for CPU

access (0 = primary buffer, 1 = secondary buffer).

0 - reserved

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Full-speed USB single-chip host and device controller

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13.2.7 Acknowledge Setup (F4H)

This command acknowledges to the host that a SETUP packet was received. The

arrival of a SETUP packet disables the Validate Buffer and Clear Buffer commands

for the control IN and OUT endpoints. The microprocessor needs to re-enable these

commands by sending an Acknowledge Setup command, see Section 11.3.6.

Code (Hex): F4 — acknowledge setup

Transaction — none

13.3 General commands

13.3.1 Read Endpoint Error Code (R: A0H–AFH)

This command returns the status of the last transaction of the selected endpoint, as

stored in the DcErrorCode register. Each new transaction overwrites the previous

status information. The bit allocation of the DcErrorCode register is shown in

Ta b l e 9 6 .

Code (Hex): A0 to AF — read error code (control OUT, control IN, endpoint 1 to 14)

Transaction — read 1 word

Table 96: DcErrorCode register: bit allocation

Bit 76543210

Symbol UNREAD DATA01 reserved ERROR[3:0] RTOK

Reset 00000000

Access RRRRRRRR

Table 97: DcErrorCode register: bit description

Bit Symbol Description

7 UNREAD Logic 1 indicates that a new event occurred before the previous

status was read.

6 DATA01 This bit indicates the PID type of the last successfully received

or transmitted packet (0 = DATA0 PID, 1 = DATA1 PID).

5 - reserved

4 to 1 ERROR[3:0] Error code. For error description, see Ta b l e 9 8 .

0 RTOK Logic 1 indicates that data was received or transmitted

successfully.

Table 98: Transaction error codes

Error code

(Binary)

Description

0000 no error

0001 PID encoding error; bits 7 to 4 are not the inverse of bits 3 to 0

0010 PID unknown; encoding is valid, but PID does not exist

0011 unexpected packet; packet is not of the expected type (token, data, or

acknowledge), or is a SETUP token to a non-control endpoint

0100 token CRC error

0101 data CRC error

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Full-speed USB single-chip host and device controller

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13.3.2 Unlock Device (B0H)

This command unlocks ISP1161A’s DC from write-protection mode after a ‘resume’.

In ‘suspend’ state all registers and FIFOs are write-protected to prevent data

corruption by external devices during a ‘resume’. Also, the register access for reading

is possible only after the ‘Unlock Device’ command is executed.

After waking up from ‘suspend’ state, the ﬁrmware must unlock the registers and

FIFOs via this command, by writing the unlock code (AA37H) into the Lock register.

The bit allocation of the Lock register is given in Ta bl e 9 9 .

Code (Hex): B0 — unlock the device

Transaction — write 1 word (unlock code)

13.3.3 DcScratch register (R/W: B3H/B2H)

This command accesses the 16-bit DcScratch register, which can be used by the

ﬁrmware to save and restore information, e.g., the device status before powering

down in ‘suspend’ state. The register bit allocation is given in Table 101.

0110 time-out error

0111 babble error

1000 unexpected end-of-packet

1001 sent or received NAK (Not AcKnowledge)

1010 sent Stall; a token was received, but the endpoint was stalled

1011 overﬂow; the received packet was larger than the available buffer space

1100 sent empty packet (ISO only)

1101 bit stufﬁng error

1110 sync error

1111 wrong (unexpected) toggle bit in DATA PID; data was ignored

Table 98: Transaction error codes

…continued

Error code

(Binary)

Description

Table 99: Lock register: bit allocation

Bit 15 14 13 12 11 10 9 8

Symbol UNLOCKH[7:0]

Reset 10101010

Access WWWWWWWW

Bit 76543210

Symbol UNLOCKL[7:0]

Reset 00110111

Access WWWWWWWW

Table 100: Lock register: bit description

Bit Symbol Description

15 to 0 UNLOCK[15:0] Sending data AA37H unlocks the internal registers and FIFOs

for writing, following a ‘resume’.

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Full-speed USB single-chip host and device controller

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Code (Hex): B2/B3 — write/read Scratch register

Transaction — write/read 1 word

13.3.4 Read Frame Number (R: B4H)

This command returns the frame number of the last successfully received SOF. It is

followed by reading one word from the DcFrameNumber register, containing the

frame number. The DcFrameNumber register is shown in Table 103.

Remark: After a bus reset, the value of the DcFrameNumber register is undeﬁned.

Code (Hex): B4 — read frame number

Transaction — read 1 word

[1] Reset value undeﬁned after a bus reset.

Table 101: DcScratch register: bit allocation

Bit 15 14 13 12 11 10 9 8

Symbol reserved SFIRH[4:0]

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Bit 76543210

Symbol SFIRL[7:0]

Reset 00000000

Access R/W R/W R/W R/W R/W R/W R/W R/W

Table 102: DcScratch register: bit description

Bit Symbol Description

15 to 13 - reserved; must be logic 0

12 to 0 SFIR[12:0] Scratch Information register

Table 103: DcFrameNumber register: bit allocation

Bit 15 14 13 12 11 10 9 8

Symbol reserved SOFRH[2:0]

Reset[1] 00000000

Access RRRRRRRR

Bit 76543210

Symbol SOFRL[7:0]

Reset[1] 00000000

Access RRRRRRRR

Table 104: DcFrameNumber register: bit description

Bit Symbol Description

15 to 11 - reserved

10 to 8 SOFRH[2:0] SOF frame number (part of upper byte)

7 to 0 SOFRL[7:0] SOF frame number (lower byte)

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Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 106 of 134

13.3.5 Read Chip ID (R: B5H)

This command reads the chip identiﬁcation code and hardware version number. The

ﬁrmware must check this information to determine the supported functions and

features. This command accesses the DcChipID register, which is shown in

Table 106.

Code (Hex): B5 — read chip ID

Transaction — read 1 word

13.3.6 Read Interrupt register (R: C0H)

This command indicates the sources of interrupts as stored in the 4-byte DcInterrupt

DcInterrupt register is shown in Table 108. Bit BUSTATUS is used to verify the current

bus status in the interrupt service routine. Interrupts are enabled via the Interrupt

Enable register, see Section 13.1.5.

Remark: While reading the DcInterrupt register, it is recommended that both 2 byte

words are read completely.

Code (Hex): C0 — read interrupt register

Transaction — read 2 words

Remark: For details on interrupt control, see Section 8.6.3.

Table 105: Example of DcFrameNumber register access

A0 Phase Bus lines Word # Description

1 command D[7:0] - command code (B4H)

D[15:8] - ignored

0 data D[15:0] 0 frame number

Table 106: DcChipID register: bit allocation

Bit 15 14 13 12 11 10 9 8

Symbol CHIPIDH[7:0]

Reset 01100001

Access RRRRRRRR

Bit 76543210

Symbol CHIPIDL[7:0]

Reset 00100010

Access RRRRRRRR

Table 107: DcChipID register: bit description

Bit Symbol Description

15 to 8 CHIPIDH[7:0] chip ID code (61H)

7 to 0 CHIPIDL[7:0] silicon version (22H)

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Product data Rev. 03 — 23 December 2004 107 of 134

Table 108: DcInterrupt register: bit allocation

Bit 31 30 29 28 27 26 25 24

Symbol reserved

Reset 00000000

Access RRRRRRRR

Bit 23 22 21 20 19 18 17 16

Symbol EP14 EP13 EP12 EP11 EP10 EP9 EP8 EP7

Reset 00000000

Access RRRRRRRR

Bit 15 14 13 12 11 10 9 8

Symbol EP6 EP5 EP4 EP3 EP2 EP1 EP0IN EP0OUT

Reset 00000000

Access RRRRRRRR

Bit 76543210

Symbol BUSTATUS SP_EOT PSOF SOF EOT SUSPND RESUME RESET

Reset 00000000

Access RRRRRRRR

Table 109: DcInterrupt register: bit description

Bit Symbol Description

31 to 24 - reserved

23 to 10 EP14 to EP1 Logic 1 indicates the interrupt source(s): endpoint 14 to 1.

9 EP0IN Logic 1 indicates the interrupt source: control IN endpoint.

8 EP0OUT Logic 1 indicates the interrupt source: control OUT endpoint.

7 BUSTATUS Monitors the current USB bus status (0 = awake, 1 = suspend).

6 SP_EOT Logic 1 indicates that an EOT interrupt has occurred for a short

packet.

5 PSOF Logic 1 indicates that an interrupt is issued every 1 ms because

of the Pseudo SOF; after 3 missed SOFs ‘suspend’ state is

entered.

4 SOF Logic 1 indicates that a SOF condition was detected.

3 EOT Logic 1 indicates that an internal EOT condition was generated

by the DMA Counter reaching zero.

2 SUSPND Logic 1 indicates that an ‘awake’ to ‘suspend’ change of state

was detected on the USB bus.

1 RESUME Logic 1 indicates that a ‘resume’ state was detected.

0 RESET Logic 1 indicates that a bus reset condition was detected.

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Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 108 of 134

14. Power supply

ISP1161A can operate at either 5 V or 3.3 V.

When using 5 V as ISP1161A’s power supply input, only VCC (pin 56) can be

connected to the 5 V power supply. An application with a 5 V power supply input is

shown in Figure 43. ISP1161A has an internal DC/DC regulator to provide 3.3 V for

its internal core. This internal 3.3 V can also be obtained from Vreg(3.3) (pin 58) to

supply the 1.5 kΩ pull-up resistor of the DC side upstream port signal D_DP. The

signal D_DP is connected to the standard USB upstream port connector’s pin D+.

When using 3.3 V as the power supply input, the internal DC/DC regulator will be

bypassed. All four power supply pins (VCC,V

reg(3.3),V

hold1 and Vhold2) can be used as

power supply input.

It is recommended that you connect all four power supply pins to the 3.3 V power

supply, as shown in Figure 44. If, however, you have board space (routing area)

constraints, you must connect at least the VCC and the Vreg(3.3) to the 3.3 V power

supply.

For both 3.3 V and 5 V operation, all four power supply pins should be connected to a

decoupling capacitor.

Fig 43. Using a 5 V supply. Fig 44. Using a 3.3 V supply.

004aaa096

1.5 kΩ

D_DP

GND

VCC

Vreg(3.3)

Vhold1

Vhold2

to USB

upstream

port

connector

+5 V

ISP1161A

004aaa097

1.5 kΩ

D_DP

GND

VCC

Vreg(3.3)

Vhold1

Vhold2

to USB

upstream

port

connector

+3.3 V

ISP1161A

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 109 of 134

15. Crystal oscillator and LazyClock

The ISP1161A has a crystal oscillator designed for a 6 MHz parallel-resonant crystal

(fundamental). A typical circuit is shown in Figure 45. Alternatively, an external clock

signal of 6 MHz can be applied to input XTAL1, while leaving output XTAL2 open. See

Figure 46.

The 6 MHz oscillator frequency is multiplied to 48 MHz by an internal PLL. This

frequency is used to generate a programmable clock output signal at pin CLKOUT,

ranging from 3 MHz to 48 MHz.

In ‘suspend’ state the normal CLKOUT signal is not available, because the crystal

oscillator and the PLL are switched off to save power. Instead, the CLKOUT signal

can be switched to the LazyClock frequency of 100 ±50 % kHz.

The oscillator operation and the CLKOUT frequency are controlled via the

DcHardwareConﬁguration register, as shown in Figure 47. The following bits are

involved:

•CLKRUN switches the oscillator on and off

•CLKDIV[3:0] is the division factor determining the normal CLKOUT frequency

•NOLAZY controls the LazyClock signal output during ‘suspend’ state.

For details about the DC’s interrupt logic, see Section 8.6.3.

Fig 45. Oscillator circuit with external crystal. Fig 46. Oscillator circuit using external oscillator.

18 pF

6 MHz

18 pF

004aaa098

CLKOUT

XTAL2

XTAL1

ISP1161A

OSC

Out

n.c.

6 MHz

004aaa099

CLKOUT

XTAL2

XTAL1

ISP1161A

VCC

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 110 of 134

When ISP1161A’s DC enters ‘suspend’ state (by setting and clearing bit GOSUSP in

the DcMode register), outputs D_SUSPEND and CLKOUT change state after

approximately 2 ms delay. When NOLAZY = 0 the clock signal on output CLKOUT

does not stop, but changes to the 100 kHz ±50 % LazyClock frequency.

When resuming from ‘suspend’ state by a positive pulse on input D_WAKEUP, output

SUSPEND is cleared and the clock signal on CLKOUT restarted after a 0.5 ms delay.

The timing of the CLKOUT signal at ‘suspend’ and ‘resume’ is given in Figure 48.

Fig 47. Oscillator and LazyClock logic.

MGS775

CLKRUN

hardware

configuration

CLKDIV[3:0]

NOLAZY

(N + 1) 1

PLL 8×XTAL OSC

LAZYCLOCK

enable

NOLAZY

CLKOUT

enable

6 MHz 48 MHz

SUSPEND

100 (±50 %) kHz

If enabled, the 100 ±50 % kHz LazyClock frequency will be output on pin CLKOUT during ‘suspend’ state.

Fig 48. CLKOUT signal timing at ‘suspend’ and ‘resume’ for DC.

004aaa038

D_WAKEUP

GOSUSP

1.8 to 2.2 ms 0.5 ms

PLL circuit stable

3 to 4 ms

D_SUSPEND

CLKOUT

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Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 111 of 134

16. Limiting values

[1] Equivalent to discharging a 100 pF capacitor via a 1.5 kΩ resistor (Human Body Model).

[1] 5 V tolerant.

Table 110: Absolute maximum ratings

In accordance with the Absolute Maximum Rating System (IEC 60134).

Symbol Parameter Conditions Min Max Unit

VCC(5V) supply voltage to VCC pin −0.5 +6.0 V

VCC(3.3V) supply voltage to Vreg(3.3) pin −0.5 +4.6 V

VIinput voltage −0.5 +6.0 V

Ilu latch-up current VI< 0 or VI>V

CC - 100 mA

Vesd electrostatic discharge voltage ILI <1µA[1] -±2000 V

Tstg storage temperature −60 +150 °C

Table 111: Recommended operating conditions

Symbol Parameter Conditions Min Typ Max Unit

VCC supply voltage with internal regulator 4.0 5.0 5.5 V

internal regulator bypass 3.0 3.3 3.6 V

VIinput voltage 0 VCC 5.5[1] V

VI(A I/O) input voltage on analog I/O pins (D+/ D−) 0 - 3.6 V

VO(od) open-drain output pull-up voltage 0 - VCC V

Tamb ambient temperature −40 - +85 °C

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Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 112 of 134

17. Static characteristics

[1] In ‘suspend’ mode, the minimum voltage is 2.7 V.

[1] Not applicable for open-drain outputs.

[2] This value is applicable to transistor input only. The value will be different if internal pull-up or pull-down resistors are used.

Table 112: Static characteristics; supply pins

= 3.0 V to 3.6 V or 4.0 V to 5.5 V; V

GND

=0V; T

amb

−

Cto

C; unless otherwise speciﬁed.

Symbol Parameter Conditions Min Typ Max Unit

VCC =5V

Vreg(3.3) internal regulator output 3.0[1] 3.3 3.6 V

ICC operating supply current - 47 - mA

ICC(susp) suspend supply current - 40 500 µA

ICC(HC) operating supply current for HC DC is suspended - 22 - mA

ICC(DC) operating supply current for DC HC is suspended - 18 - mA

VCC = 3.3 V

ICC operating supply current - 50 - mA

ICC(susp) suspend supply current - 150 500 µA

ICC(HC) operating supply current for HC DC is suspended - 22 - mA

ICC(DC) operating supply current for DC HC is suspended - 18 - mA

Table 113: Static characteristics: digital pins

= 3.0 V to 3.6 V or 4.0 V to 5.5 V; V

GND

=0V; T

amb

−

Cto

C; unless otherwise speciﬁed.

Symbol Parameter Conditions Min Typ Max Unit

∆Vtrip overcurrent detection trip

voltage

75 mV

Input levels

VIL LOW-level input voltage - - 0.8 V

VIH HIGH-level input voltage 2.0 - - V

Schmitt trigger inputs

Vth(LH) positive-going threshold

voltage

1.4 - 1.9 V

Vth(HL) negative-going threshold

voltage

0.9 - 1.5 V

Vhys hysteresis voltage 0.4 - 0.7 V

Output levels

VOL LOW-level output voltage IOL = 4 mA - - 0.4 V

IOL =20µA - - 0.1 V

VOH HIGH-level output voltage IOH =4mA [1] 2.4 - - V

IOH =20µAV

reg(3.3) − 0.1 - - V

Leakage current

ILI input leakage current −5[2] -+5[2] µA

CIN pin capacitance pin to GND - - 5 pF

Open-drain outputs

IOZ OFF-state output current - - ±5µA

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 113 of 134

[1] D+ is the USB positive data pin; D− is the USB negative data pin.

[2] Includes external resistors of 18 Ω±1 % on both H_D+ and H_D−.

[3] In ‘suspend mode’, the minimum voltage is 2.7 V.

Table 114: Static characteristics: analog I/O pins (D+, D−)

= 3.0 V to 3.6 V or 4.0 V to 5.5 V; V

GND

=0V; T

amb

−

Cto

C; unless otherwise speciﬁed.

Symbol Parameter Conditions Min Typ Max Unit

Input levels

VDI differential input sensitivity |VI(D+)−VI(D−)|[1] 0.2 - - V

VCM differential common mode

voltage

includes VDI range 0.8 - 2.5 V

VIL LOW-level input voltage - - 0.8 V

VIH HIGH-level input voltage 2.0 - - V

Output levels

VOL LOW-level output voltage RL= 1.5 kΩ to 3.6 V - - 0.3 V

VOH HIGH-level output voltage RL=15kΩ to GND 2.8 - 3.6 V

Leakage current

ILZ OFF-state leakage current - - ±10 µA

Capacitance

CIN transceiver capacitance pin to GND - - 10 pF

Resistance

RPD pull-down resistance on HC’s

DP/DM

enable internal

resistors

10 - 20 kΩ

RPU pull-up resistance on D_DP SoftConnect = ON 1 - 2 kΩ

ZDRV driver output impedance steady-state drive [2] 29 - 44 Ω

ZINP input impedance 10 - - MΩ

Termination

VTERM termination voltage for

upstream port pull-up (RPU)

3.0[3] - 3.6 V

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 114 of 134

18. Dynamic characteristics

[1] Dependent on the crystal oscillator start-up time.

[1] Test circuit; see Figure 64.

[2] Excluding the ﬁrst transition from Idle state.

[3] Characterized only, not tested. Limits guaranteed by design.

Table 115: Dynamic characteristics

= 3.0 V to 3.6 V or 4.0 V to 5.5 V; V

GND

=0V; T

amb

−

Cto

C; unless otherwise speciﬁed.

Symbol Parameter Conditions Min Typ Max Unit

Reset

tW(RESET) pulse width on input RESET crystal oscillator running 160 - - µs

crystal oscillator

stopped

-[1] -ms

Crystal oscillator

fXTAL crystal frequency - 6 - MHz

RSseries resistance - - 100 Ω

CLOAD load capacitance - 18 - pF

External clock input

tJexternal clock jitter - - 500 ps

tDUTY clock duty cycle 45 50 55 %

tCR, tCF rise time and fall time - - 3 ns

Table 116: Dynamic characteristics: analog I/O pins (D+, D−)[1]

= 3.0 V to 3.6 V or 4.0 V to 5.5 V; V

GND

=0V;T

amb

−

Cto

C; C

= 50 pF; R

= 1.5 k

Ω±

5 % on D

to V

TERM

;

unless otherwise speciﬁed.

Symbol Parameter Conditions Min Typ Max Unit

Driver characteristics

tFR rise time CL=50pF;

10%to90% of

|VOH −VOL|

4 - 20 ns

tFF fall time CL=50pF;

90%to10% of

|VOH −VOL|

4 - 20 ns

FRFM differential rise/fall time

matching (tFR/tFF)

[2] 90 - 111.11 %

VCRS output signal crossover voltage [2][3] 1.3 - 2.0 V

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 115 of 134

18.1 Programmed I/O timing

•If you are accessing only the HC, then the HC Programmed I/O timing applies.

•If you are accessing only the DC, then the DC Programmed I/O timing applies.

•If you are accessing both the HC and the DC, then the DC Programmed I/O timing

applies.

18.1.1 HC Programmed I/O timing

Table 117: Dynamic characteristics: HC Programmed interface timing

Symbol Parameter Conditions Min Typ Max Unit

tAS address set-up time before WR

HIGH

5--ns

tAH address hold time after WR HIGH 8 - - ns

Read timing

tSHSL ﬁrst RD/WR after A0 HIGH 300 - - ns

tSLRL CS LOW to RD LOW 0 - - ns

tRHSH RD HIGH to CS HIGH 0 - - ns

tRLRH RD LOW pulse width 33 - - ns

tRHRL RD HIGH to next RD LOW 110 - - ns

TRC RD cycle time 143 - - ns

tRHDZ RD data hold time 3 - 22 ns

tRLDV RD LOW to data valid - - 32 ns

Write timing

tWL WR LOW pulse width 26 - - ns

tWHWL WR HIGH to next WR LOW 110 - - ns

TWC WR cycle time 136 - - ns

tSLWL CS LOW to WR LOW 0 - - ns

tWHSH WR HIGH to CS HIGH 0 - - ns

tWDSU WR data set-up time 5 - - ns

tWDH WR data hold time 8 - - ns

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 116 of 134

18.1.2 DC Programmed I/O timing

Fig 49. HC Programmed interface timing.

MGT969

D[15:0]

data

valid

data

valid

data

valid

data

valid

data

valid

data

valid

data

valid

data

valid

data

valid

tSHSL

tRLRH

tRHRL

tRLDV

tWL

tWHWL

tWDH tWDSU

TRC

TWC

tRHDZ

tSLRL

tRHSH

tSLWL

tWHSH

tAH

tAS

Table 118: Dynamic characteristics: DC Programmed interface timing

Symbol Parameter Conditions Min Typ Max Unit

Read timing (see Figure 50)

tRHAX address hold time after RD HIGH 0 - - ns

tAVRL address set-up time before RD LOW 0 - - ns

tSHDZ data outputs high-impedance time after CS

HIGH

--3ns

tRHSH chip deselect after RD HIGH 0 - - ns

tRLRH RD pulse width 25 - - ns

tRLDV data valid time after RD LOW - - 22 ns

tSHRL CS HIGH until next ISP1161A RD 120 - - ns

tSHRL +t

RLRH read cycle time 180 - - ns

Write timing (see Figure 51)

tWHAX address hold time after WR HIGH 1 - - ns

tAVWL address set-up time before WR LOW 0 - - ns

tSHWL CS HIGH until next ISP1161A WR 120 - - ns

tSHWL +t

WLWH write cycle time 180 - - ns

tWLWH WR pulse width 22 - - ns

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 117 of 134

tWHSH chip deselect time after WR HIGH 0 - - ns

tDVWH data set-up time before WR HIGH 5 - - ns

tWHDZ data hold time after WR HIGH 3 - - ns

Table 118: Dynamic characteristics: DC Programmed interface timing

…continued

Symbol Parameter Conditions Min Typ Max Unit

(1) For tSHRL both CS and RD must be de-asserted.

(2) Programmable polarity: shown as active LOW.

Fig 50. DC Programmed interface read timing (I/O and 8237 compatible DMA).

004aaa105

tRHAX

tAVRL

tRLRH

tRLDV

tSHDZ

tSHRL(1)

D[15:0]

CS/DACK2

(2)

tRHSH

(1) For tSHWL both CS and WR must be de-asserted.

(2) Programmable polarity: shown as active LOW.

Fig 51. DC Programmed interface write timing (I/O and 8237 compatible DMA).

004aaa106

CS/DACK2

(2)

D[15:0]

tWHAX

tAVWL

tWHDZ

tDVWH

tWLWH

tWHSH

tSHWL(1)

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 118 of 134

18.2 DMA timing

18.2.1 HC single-cycle DMA timing

[1] tRHAL +t

DS +tALRL.

Table 119: Dynamic characteristics: HC single-cycle DMA timing

Symbol Parameter Conditions Min Typ Max Unit

Read/write timing

tRLRH RD pulse width 33 - - ns

tRLDV read process data set-up time 26 - - ns

tRHDZ read process data hold time 0 - 20 ns

tWSU write process data set-up time 5 - - ns

tWHD write process data hold time 0 - - ns

tAHRH DACK1 HIGH to DREQ1 HIGH 72 - - ns

tALRL DACK1 LOW to DREQ1 LOW - - 21 ns

TDC DREQ1 cycle [1] --ns

tSHAH RD/WR HIGH to DACK1 HIGH 0 - - ns

tRHAL DREQ1 HIGH to DACK1 LOW 0 - - ns

tDS DREQ1 pulse spacing 146 - - ns

Fig 52. HC single-cycle DMA timing.

004aaa107

DREQ1

DACK1

D[15:0]

(read)

D[15:0]

(write)

RD or WR

tDS

tAHRH

TDC

data

valid

data

valid

tALRL

tRHAL

tWHD

tWSU

tRLDV tRHDZ

tSHAH

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 119 of 134

18.2.2 HC burst mode DMA timing

[1] tSLAL + (4 or 8)tRC + tDS.

Table 120: Dynamic characteristics: HC burst mode DMA timing

Symbol Parameter Conditions Min Typ Max Unit

Read/write timing (for 4-cycle and 8-cycle burst mode)

tRLRH WR/RD LOW pulse width 42 - - ns

tRHRL WR/RD HIGH to next WR/RD LOW 60 - - ns

TRC WR/RD cycle 102 - - ns

tSLRL RD/WR LOW to DREQ1 LOW 22 - 64 ns

tSHAH RD/WR HIGH to DACK1 HIGH 0 - - ns

tSLAL DREQ1 HIGH to DACK1 LOW 0 - ns

TDC DREQ1 cycle [1] --ns

tDS(read) DREQ1 pulse spacing (read) 4-cycle burst mode 105 - - ns

8-cycle burst mode 150 - - ns

tDS(write) DREQ1 pulse spacing (write) 4-cycle burst mode 72 - - ns

8-cycle burst mode 167 - - ns

tRLIS RD/WR LOW to EOT LOW 0 - - ns

Fig 53. HC burst mode DMA timing.

004aaa108

tRHRL

tDS

tRHSH

DREQ1

DACK1

RD or WR

tSLRL

tSHAH

tRLRH

TRC

tRHAL

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 120 of 134

18.2.3 External EOT timing for HC single-cycle DMA

18.2.4 External EOT timing for HC burst mode DMA

18.2.5 DC single-cycle DMA timing (8237 mode)

Fig 54. External EOT timing for HC single-cycle DMA.

004aaa109

DREQ1

DACK1

EOT

tRLIS > 0 ns

RD or WR

Fig 55. External EOT timing for HC burst mode DMA.

004aaa110

DREQ1

DACK1

EOT

tRLIS > 0 ns

RD or WR

Table 121: Dynamic characteristics: DC single-cycle DMA timing (8237 mode)

Symbol Parameter Conditions Min Typ Max Unit

tASRP DREQ2 off after DACK2 on - - 40 ns

Tcy(DREQ2) cycle time signal DREQ2 180 - - ns

(1) Programmable polarity: shown as active LOW.

Fig 56. DC single-cycle DMA timing (8237 mode).

004aaa111

DREQ2

DACK2

(1)

tASRP

TRC

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 121 of 134

18.2.6 DC single-cycle DMA read timing in DACK-only mode

18.2.7 DC single-cycle DMA write timing in DACK-only mode

Table 122: Dynamic characteristics: DC single-cycle DMA read timing in DACK-only mode

Symbol Parameter Conditions Min Typ Max Unit

tASRP DREQ off after DACK on - - 40 ns

tASAP DACK pulse width 25 - - ns

tASAP + tAPRS DREQ on after DACK off 180 - - ns

tASDV data valid after DACK on - - 22 ns

tAPDZ data hold after DACK off - - 3 ns

(1) Programmable polarity: shown as active LOW.

Fig 57. DC single-cycle DMA read timing in DACK-only mode.

004aaa112

DACK2

(1)

DREQ2

tASRP tAPRS

tASDV tAPDZ

DATA

tASAP

Table 123: Dynamic characteristics: DC single-cycle DMA write timing in DACK-only mode

Symbol Parameter Conditions Min Typ Max Unit

tASRP DREQ2 off after DACK2 on - - 40 ns

tASAP + tAPRS DREQ2 on after DACK2 off 180 - - ns

tDVAP data setup before DACK2 off 5 - - ns

tAPDZ data hold after DACK2 off 3 - - ns

(1) Programmable polarity: shown as active LOW.

Fig 58. DC single-cycle DMA write timing in DACK-only mode.

004aaa113

DACK2

(1)

DREQ2

tASRP tAPRS

tASDV tAPDZ

DATA

tASAP

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 122 of 134

18.2.8 EOT timing in DC single-cycle DMA

18.2.9 DC burst mode DMA timing

Table 124: Dynamic characteristics: EOT timing in DC single-cycle DMA

Symbol Parameter Conditions Min Typ Max Unit

tRSIH input RD/WR HIGH after DREQ

22--ns

tIHAP DACK off after input RD/WR

HIGH

0--ns

tEOT EOT pulse width EOT on;

DACK on; RD/WR

LOW

22--ns

tRLIS input EOT on after RD LOW - - 89 ns

tWLIS input EOT on after WR LOW - 89 ns

(1) tASRP starts from DACK or RD/WR going LOW, whichever occurs later.

(2) The RD/WR signals are not used in DACK-only DMA mode.

(3) The EOT condition is considered valid if DACK, RD/WR and EOT are all active (= LOW).

(4) Programmable polarity: shown as active LOW.

Fig 59. EOT timing in DC single-cycle DMA.

004aaa114

DREQ2

tRSIH

tIHAP

tASRP

(1)

tEOT

(3)

tRLIS

tWLIS

EOT

(4)

DACK2

(4)

RD/WR

(2)

Table 125: Dynamic characteristics: DC burst mode DMA timing

Symbol Parameter Conditions Min Typ Max Unit

tRSIH input RD/WR HIGH after DREQ on 22 - - ns

tILRP DREQ off after input RD/WR LOW - - 60 ns

tIHAP DACK off after input RD/WR HIGH 0 - - ns

tIHIL DMA burst repeat interval (input

RD/WR HIGH to LOW)

180 - - ns

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 123 of 134

18.2.10 EOT timing in DC burst mode DMA

(1) Programmable polarity: shown as active LOW.

Fig 60. DC burst mode DMA timing.

004aaa115

DACK2

(1)

DREQ2

tRSIH tILRP

tIHIL

tIHAP

RD or WR

Table 126: Dynamic characteristics: EOT timing in DC burst mode DMA

Symbol Parameter Conditions Min Typ Max Unit

tEOT EOT pulse width EOT on;

DACK on;

RD/WR LOW

22--ns

tISRP DREQ off after input EOT on - - 40 ns

tRLIS input EOT on after RD LOW - - 89 ns

tWLIS input EOT on after WR LOW - - 89 ns

(1) The EOT condition is considered valid if DACK2, RD/WR and EOT are all active (= LOW).

(2) Programmable polarity: shown as active LOW.

Fig 61. EOT timing in DC burst mode DMA.

004aaa116

DACK2

(2)

DREQ2

tISRP

tEOT(1)

RD/WR

EOT

(2)

tRLIS

tWLIS

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 124 of 134

19. Application information

19.1 Typical interface circuit

19.2 Interfacing a ISP1161A with a SH7709 RISC processor

This section shows a typical interface circuit between ISP1161A and a RISC

processor. The Hitachi SH-3 series RISC processor SH7709 is used as the example.

The main ISP1161A signals to be taken into consideration for connecting to a

SH7709 RISC processor are:

•A 16-bit data bus: D15-D0 for ISP1161A. ISP1161A is ‘little endian’ compatible.

•Two address lines A1 and A0 are needed for a complete addressing of the

ISP1161A internal registers:

–A1 = 0 and A0 = 0 will select the Data Port of the Host Controller

–A1 = 0 and A0 = 1 will select the Command Port of the Host Controller

–A1 = 1 and A0 = 0 will select the Data Port of the Device Controller

–A1 = 1 and A0 = 1 will select the Command Port of the Device Controller

•The CS line is used for chip selection of ISP1161A in a certain address range of

the RISC system. This signal is active LOW.

(1) For MOSFET, RDSon = 150 mΩ.

(2) 470 Ω assuming that VCC is 5.0 V.

Fig 62. Typical interface circuit to Hitachi SH-3 (SH7709) RISC processor.

004aaa100

470 Ω(2)

1.5 kΩ

LED

FB4

FB6

FB3

FB2

FB1

22 Ω

(2×)

22 pF

47 pF

(2×)

+5 V

+3.3 V

+5 V VDD +5 V +5 V

Vbus_DN2 Vbus_DN1

+3.3 V

+5 V

SH7709

A1 A0

MOSFET (2×)(1)

USB

downstream

port #1

USB

downstream

port #2

D[15:0]D[15:0]

A2 A1

DREQ0 DREQ1

DACK0 DACK1

DREQ1 DREQ2

CS5 CS

RD RD

RD/WR WR

DACK1 DACK2

EOT

PTC0 H_WAKEUP

PTC1 H_SUSPEND

PTC2 D_WAKEUP

PTC3 D_SUSPEND

GND

XTAL2

EXTAL2

kHz

6 MHz

XTAL

EXTAL

DGND

AGND

IRQ2 INT1

IRQ3 INT2

RSTOUT RESET

ISP1161A

CLKOUT

H_OC1

H_OC2

H_PSW2

H_PSW1

VCC

Vreg(3.3)

Vhold1

Vhold2

H_DM1

H_DP1

H_DM2

H_DP2

D_DM

D_DP

NDP_SEL

D_VBUS

CLKOUT

XTAL2

XTAL1

Vreg

VDD

+3.3 V

Vreg

USB

upstream

port

22 Ω

(2×)

47 pF

(2×)

Vbus_UP

FB5

22 Ω

(2×)

47 pF

(2×)

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 125 of 134

•RD and WR are common read and write signals. These signals are active LOW.

•There are two DMA channel standard control lines:

–DREQ1 and DACK1

–DREQ2 and DACK2

(in each case one channel is used by the HC and the other channel is used by the

DC). These signals have programmable active levels.

•Two interrupt lines: INT1 (used by the host controller) and INT2 (used by the

device controller). Both have programmable level/edge and polarity (active HIGH

or LOW).

•The internal 15 kΩpull-down resistors are used for the HC’s two USB downstream

ports.

•The RESET signal is active LOW.

Remark: SH7709’s system clock input is for reference only. Please refer to SH7709’s

speciﬁcation for its actual use.

ISP1161A can work under either 3.3 V or 5.0 V power supply; however, its internal

core actually works at 3.3 V. When using 3.3 V as the power supply input, the internal

DC/DC regulator will be bypassed. It is best to connect all four power supply pins

(VCC, Vreg(3.3), Vhold1 and Vhold2) to the 3.3 V power supply (for more information see

Section 14). All of the ISP1161A’s I/O pins are 5 V tolerant. This feature allows the

ISP1161A the ﬂexibility to be used in an embedded system under either a 3.3 V or a

5 V power supply.

A typical SH7709 interface circuit is shown in Figure 62.

19.3 Typical software model

This section shows a typical software requirement for an embedded system that

incorporates ISP1161A. The software model for a digital still camera (DSC) is used

as the example for illustration (as shown in Figure 63). Two components of system

software are required to make full use of the features in ISP1161A: the host stack and

the device stack. The device stack provides API directly to the application task for

device function; the host stack provides API for Class driver and device driver, both of

which provide API for application tasks for host function.

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 126 of 134

20. Test information

The dynamic characteristics of the analog I/O ports (D+ and D−) as listed in

Table 116 were determined using the circuit shown in Figure 64.

Fig 63. ISP1161A software model for DSC application.

Printer

Flash card

Reader/

Writer

USB Upstream

USB Downstream

Digital Still Camera

RISC ROM

RAM

ISP1161A

LEN

CONTROL

004aaa101

MECHANISM CONTROL TASK

IMAGE PROCESSING TASKS

FILE MANAGEMENT

PRINTER UI/CONTROL

PRINTING CLASS DRIVER

HOST STACK DEVICE STACK USB

host/device

stack

Class

driver

Application

layer

FILE TRANSFER

DEVICE DRIVERS

MASS STORAGE CLASS DRIVER

ISP1161A HAL

Load capacitance:

CL= 50 pF (full-speed mode).

Speed:

full-speed mode only: internal 1.5 kΩ pull-up resistor on D_DP.

Fig 64. Load impedance for D_DP and D_DM pins.

MGT967

15 kΩ

22 Ω

test point

50 pF

D.U.T.

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 127 of 134

21. Package outline

Fig 65. LQFP64 (SOT314-2) package outline.

UNIT A

max. A1A2A3bpcE

(1) eH

ELL

pZywv θ

REFERENCES

OUTLINE

VERSION

EUROPEAN

PROJECTION ISSUE DATE

IEC JEDEC JEITA

mm 1.6 0.20

0.05

1.45

1.35 0.25 0.27

0.17

0.18

0.12

10.1

9.9 0.5 12.15

11.85

1.45

1.05

0.12 0.11 0.2

DIMENSIONS (mm are the original dimensions)

Note

1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.

0.75

0.45

SOT314-2 MS-026136E10 00-01-19

03-02-25

D(1) (1)(1)

10.1

9.9

12.15

11.85

1.45

1.05

detail X

(A )

HA2

vMB

vMA

48 33

pin 1 index

0 2.5 5 mm

scale

LQFP64: plastic low profile quad flat package; 64 leads; body 10 x 10 x 1.4 mm SOT314-2

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 128 of 134

Fig 66. LQFP64 (SOT414-1) package outline.

UNIT A

max. A1A2A3bpcE

(1) eH

ELL

pZywv θ

REFERENCES

OUTLINE

VERSION

EUROPEAN

PROJECTION ISSUE DATE

IEC JEDEC JEITA

mm 1.6 0.15

0.05

1.45

1.35 0.25 0.23

0.13

0.20

0.09

7.1

6.9 0.4 9.15

8.85

0.64

0.36

0.08 0.081 0.2

DIMENSIONS (mm are the original dimensions)

Note

1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.

0.75

0.45

SOT414-1 136E06 MS-026 00-01-19

03-02-20

D(1) (1)(1)

7.1

6.9

9.15

8.85

0.64

0.36

detail X

(A )

HA2

vMB

vMA

48 33

pin 1 index

0 2.5 5 mm

scale

LQFP64: plastic low profile quad flat package; 64 leads; body 7 x 7 x 1.4 mm SOT414-1

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 129 of 134

22. Soldering

22.1 Introduction to soldering surface mount packages

This text gives a very brief insight to a complex technology. A more in-depth account

of soldering ICs can be found in our

Data Handbook IC26; Integrated Circuit

Packages

(document order number 9398 652 90011).

There is no soldering method that is ideal for all surface mount IC packages. Wave

soldering can still be used for certain surface mount ICs, but it is not suitable for ﬁne

pitch SMDs. In these situations reﬂow soldering is recommended. In these situations

reﬂow soldering is recommended.

22.2 Reﬂow soldering

Reﬂow soldering requires solder paste (a suspension of ﬁne solder particles, ﬂux and

binding agent) to be applied to the printed-circuit board by screen printing, stencilling

or pressure-syringe dispensing before package placement. Driven by legislation and

environmental forces the worldwide use of lead-free solder pastes is increasing.

Several methods exist for reﬂowing; for example, convection or convection/infrared

heating in a conveyor type oven. Throughput times (preheating, soldering and

cooling) vary between 100 and 200 seconds depending on heating method.

Typical reﬂow peak temperatures range from 215 to 270 °C depending on solder

paste material. The top-surface temperature of the packages should preferably be

kept:

•below 225 °C (SnPb process) or below 245 °C (Pb-free process)

–for all BGA, HTSSON..T and SSOP..T packages

–for packages with a thickness ≥2.5 mm

–for packages with a thickness < 2.5 mm and a volume ≥350 mm3 so called

thick/large packages.

•below 240 °C (SnPb process) or below 260 °C (Pb-free process) for packages with

a thickness < 2.5 mm and a volume < 350 mm3 so called small/thin packages.

Moisture sensitivity precautions, as indicated on packing, must be respected at all

times.

22.3 Wave soldering

Conventional single wave soldering is not recommended for surface mount devices

(SMDs) or printed-circuit boards with a high component density, as solder bridging

and non-wetting can present major problems.

To overcome these problems the double-wave soldering method was speciﬁcally

developed.

If wave soldering is used the following conditions must be observed for optimal

results:

•Use a double-wave soldering method comprising a turbulent wave with high

upward pressure followed by a smooth laminar wave.

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 130 of 134

•For packages with leads on two sides and a pitch (e):

–larger than or equal to 1.27 mm, the footprint longitudinal axis is preferred to be

parallel to the transport direction of the printed-circuit board;

–smaller than 1.27 mm, the footprint longitudinal axis must be parallel to the

transport direction of the printed-circuit board.

The footprint must incorporate solder thieves at the downstream end.

•For packages with leads on four sides, the footprint must be placed at a 45° angle

to the transport direction of the printed-circuit board. The footprint must

incorporate solder thieves downstream and at the side corners.

During placement and before soldering, the package must be ﬁxed with a droplet of

adhesive. The adhesive can be applied by screen printing, pin transfer or syringe

dispensing. The package can be soldered after the adhesive is cured.

Typical dwell time of the leads in the wave ranges from 3 to 4 seconds at 250 °C or

265 °C, depending on solder material applied, SnPb or Pb-free respectively.

A mildly-activated ﬂux will eliminate the need for removal of corrosive residues in

most applications.

22.4 Manual soldering

Fix the component by ﬁrst soldering two diagonally-opposite end leads. Use a low

voltage (24 V or less) soldering iron applied to the ﬂat part of the lead. Contact time

must be limited to 10 seconds at up to 300 °C.

When using a dedicated tool, all other leads can be soldered in one operation within

2 to 5 seconds between 270 and 320 °C.

22.5 Package related soldering information

[1] For more detailed information on the BGA packages refer to the

(LF)BGA Application Note

(AN01026); order a copy from your Philips Semiconductors sales ofﬁce.

[2] All surface mount (SMD) packages are moisture sensitive. Depending upon the moisture content, the

maximum temperature (with respect to time) and body size of the package, there is a risk that internal

or external package cracks may occur due to vaporization of the moisture in them (the so called

popcorn effect). For details, refer to the Drypack information in the

Data Handbook IC26; Integrated

Circuit Packages; Section: Packing Methods

Table 127: Suitability of surface mount IC packages for wave and reﬂow soldering

methods

Package[1] Soldering method

Wave Reﬂow[2]

BGA, HTSSON..T[3], LBGA, LFBGA, SQFP,

SSOP..T[3], TFBGA, USON, VFBGA

not suitable suitable

DHVQFN, HBCC, HBGA, HLQFP, HSO, HSOP,

HSQFP, HSSON, HTQFP, HTSSOP, HVQFN,

HVSON, SMS

not suitable[4] suitable

PLCC[5], SO, SOJ suitable suitable

LQFP, QFP, TQFP not recommended[5][6] suitable

SSOP, TSSOP, VSO, VSSOP not recommended[7] suitable

CWQCCN..L[8], PMFP[9], WQCCN..L[8] not suitable not suitable

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 131 of 134

[3] These transparent plastic packages are extremely sensitive to reﬂow soldering conditions and must

on no account be processed through more than one soldering cycle or subjected to infrared reﬂow

soldering with peak temperature exceeding 217 °C±10 °C measured in the atmosphere of the reﬂow

oven. The package body peak temperature must be kept as low as possible.

[4] These packages are not suitable for wave soldering. On versions with the heatsink on the bottom

side, the solder cannot penetrate between the printed-circuit board and the heatsink. On versions with

the heatsink on the top side, the solder might be deposited on the heatsink surface.

[5] If wave soldering is considered, then the package must be placed at a 45° angle to the solder wave

direction. The package footprint must incorporate solder thieves downstream and at the side corners.

[6] Wave soldering is suitable for LQFP, QFP and TQFP packages with a pitch (e) larger than 0.8 mm; it

is deﬁnitely not suitable for packages with a pitch (e) equal to or smaller than 0.65 mm.

[7] Wave soldering is suitable for SSOP, TSSOP, VSO and VSOP packages with a pitch (e) equal to or

larger than 0.65 mm; it is deﬁnitely not suitable for packages with a pitch (e) equal to or smaller than

0.5 mm.

[8] Image sensor packages in principle should not be soldered. They are mounted in sockets or delivered

pre-mounted on ﬂex foil. However, the image sensor package can be mounted by the client on a ﬂex

foil by using a hot bar soldering process. The appropriate soldering proﬁle can be provided on

request.

[9] Hot bar soldering or manual soldering is suitable for PMFP packages.

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 132 of 134

23. Revision history

Table 128: Revision history

Rev Date CPCN Description

03 20041223 200412020 Product data (9397 750 13962)

Modiﬁcations:

•Section 9.4.1 “Partitions”: removed the last list item under “Examples of legal uses of

the internal FIFO buffer RAM”

•Section 9.8.1 “Using an internal OC detection circuit”: fourth paragraph, second

sentence, changed source to drain and drain to source

•Section 11.4 “Suspend and resume”: updated the entire section

•Removed Section 18.1 “Timing symbols”

•Table 118 “Dynamic characteristics: DC Programmed interface timing”: changed the

min value of tRHAX from 3 ns to 0 ns and tWHAX from 3 ns to 1 ns, and added tSHRL and

tSHWL.

02 20030324 - Product data (9397 750 10772)

01 20020802 - Product data (9397 750 09568)

9397 750 13962

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

Product data Rev. 03 — 23 December 2004 133 of 134

Contact information

For additional information, please visit http://www.semiconductors.philips.com.

For sales ofﬁce addresses, send e-mail to: sales.addresses@www.semiconductors.philips.com.Fax: +31 40 27 24825

24. Data sheet status

[1] Please consult the most recently issued data sheet before initiating or completing a design.

[2] The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at

URL http://www.semiconductors.philips.com.

[3] For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status.

25. Deﬁnitions

Short-form speciﬁcation — The data in a short-form speciﬁcation is

extracted from a full data sheet with the same type number and title. For

detailed information see the relevant data sheet or data handbook.

Limiting values deﬁnition — Limiting values given are in accordance with

the Absolute Maximum Rating System (IEC 60134). Stress above one or

more of the limiting values may cause permanent damage to the device.

These are stress ratings only and operation of the device at these or at any

other conditions above those given in the Characteristics sections of the

speciﬁcation is not implied. Exposure to limiting values for extended periods

may affect device reliability.

Application information — Applications that are described herein for any

of these products are for illustrative purposes only. Philips Semiconductors

make no representation or warranty that such applications will be suitable for

the speciﬁed use without further testing or modiﬁcation.

26. Disclaimers

Life support — These products are not designed for use in life support

appliances, devices, or systems where malfunction of these products can

reasonably be expected to result in personal injury. Philips Semiconductors

customers using or selling these products for use in such applications do so

at their own risk and agree to fully indemnify Philips Semiconductors for any

damages resulting from such application.

Right to make changes — Philips Semiconductors reserves the right to

make changes in the products - including circuits, standard cells, and/or

software - described or contained herein in order to improve design and/or

performance. When the product is in full production (status ‘Production’),

relevant changes will be communicated via a Customer Product/Process

Change Notiﬁcation (CPCN). Philips Semiconductors assumes no

responsibility or liability for the use of any of these products, conveys no

licence or title under any patent, copyright, or mask work right to these

products, and makes no representations or warranties that these products are

free from patent, copyright, or mask work right infringement, unless otherwise

speciﬁed.

27. Trademarks

ARM7 and ARM9 — are trademarks of ARM Ltd.

GoodLink — is a trademark of Koninklijke Philips Electronics N.V.

Hitachi — is a registered trademark of Hitachi Ltd.

MIPS-based — is a trademark of MIPS Technologies, Inc.

SoftConnect — is a trademark of Koninklijke Philips Electronics N.V.

StrongARM — is a registered trademark of ARM Ltd.

SuperH — is a trademark of Hitachi Ltd.

Level Data sheet status[1] Product status[2][3] Deﬁnition

I Objective data Development This data sheet contains data from the objective speciﬁcation for product development. Philips

Semiconductors reserves the right to change the speciﬁcation in any manner without notice.

II Preliminary data Qualiﬁcation This data sheet contains data from the preliminary speciﬁcation. Supplementary data will be published

at a later date. Philips Semiconductors reserves the right to change the speciﬁcation without notice, in

order to improve the design and supply the best possible product.

III Product data Production This data sheet contains data from the product speciﬁcation. Philips Semiconductors reserves the

right to make changes at any time in order to improve the design, manufacturing and supply. Relevant

changes will be communicated via a Customer Product/Process Change Notiﬁcation (CPCN).

Printed in The Netherlands

All rights are reserved. Reproduction in whole or in part is prohibited without the prior

written consent of the copyright owner.

The information presented in this document does not form part of any quotation or

contract, is believed to be accurate and reliable and may be changed without notice. No

liability will be accepted by the publisher for any consequence of its use. Publication

thereof does not convey nor imply any license under patent- or other industrial or

intellectual property rights.

Date of release: 23 December 2004 Document order number: 9397 750 13962

Contents

Philips Semiconductors ISP1161A

Full-speed USB single-chip host and device controller

1 General description . . . . . . . . . . . . . . . . . . . . . . 1

2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

4 Ordering information . . . . . . . . . . . . . . . . . . . . . 4

5 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 5

6 Pinning information . . . . . . . . . . . . . . . . . . . . . . 7

6.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

6.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 7

7 Functional description . . . . . . . . . . . . . . . . . . 11

7.1 PLL clock multiplier. . . . . . . . . . . . . . . . . . . . . 11

7.2 Bit clock recovery . . . . . . . . . . . . . . . . . . . . . . 11

7.3 Analog transceivers . . . . . . . . . . . . . . . . . . . . 11

7.4 Philips Serial Interface Engine (SIE). . . . . . . . 11

7.5 SoftConnect . . . . . . . . . . . . . . . . . . . . . . . . . . 11

7.6 GoodLink . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

8 Microprocessor bus interface. . . . . . . . . . . . . 12

8.1 Programmed I/O (PIO) addressing mode . . . . 12

8.2 DMA mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

8.3 Control register access by PIO mode . . . . . . . 13

8.4 FIFO buffer RAM access by PIO mode . . . . . 16

8.5 FIFO buffer RAM access by DMA mode. . . . . 17

8.6 Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

9 USB host controller (HC). . . . . . . . . . . . . . . . . 24

9.1 HC’s four USB states . . . . . . . . . . . . . . . . . . . 24

9.2 Generating USB trafﬁc . . . . . . . . . . . . . . . . . . 24

9.3 PTD data structure . . . . . . . . . . . . . . . . . . . . . 26

9.4 HC internal FIFO buffer RAM structure . . . . . 29

9.5 HC operational model . . . . . . . . . . . . . . . . . . . 35

9.6 Microprocessor loading. . . . . . . . . . . . . . . . . . 38

9.7 Internal pull-down resistors for downstream

ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

9.8 OC detection and power switching control . . . 39

9.9 Suspend and wake-up . . . . . . . . . . . . . . . . . . 41

10 HC registers . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

10.1 HC control and status registers . . . . . . . . . . . 44

10.2 HC frame counter registers. . . . . . . . . . . . . . . 52

10.3 HC Root Hub registers . . . . . . . . . . . . . . . . . . 55

10.4 HC DMA and interrupt control registers . . . . . 65

10.5 HC miscellaneous registers . . . . . . . . . . . . . . 70

10.6 HC buffer RAM control registers. . . . . . . . . . . 72

11 USB device controller (DC) . . . . . . . . . . . . . . . 77

11.1 DC data transfer operation . . . . . . . . . . . . . . . 77

11.2 Device DMA transfer. . . . . . . . . . . . . . . . . . . . 78

11.3 Endpoint descriptions . . . . . . . . . . . . . . . . . . . 79

11.4 Suspend and resume . . . . . . . . . . . . . . . . . . . 82

12 DC DMA transfer . . . . . . . . . . . . . . . . . . . . . . . 85

12.1 Selecting an endpoint for DMA transfer . . . . . 85

12.2 8237 compatible mode . . . . . . . . . . . . . . . . . . 86

12.3 DACK-only mode . . . . . . . . . . . . . . . . . . . . . . 87

12.4 End-Of-Transfer conditions. . . . . . . . . . . . . . . 88

13 DC commands and registers . . . . . . . . . . . . . 90

13.1 Initialization commands . . . . . . . . . . . . . . . . . 92

13.2 Data ﬂow commands . . . . . . . . . . . . . . . . . . . 99

13.3 General commands . . . . . . . . . . . . . . . . . . . 103

14 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . 108

15 Crystal oscillator and LazyClock . . . . . . . . . 109

16 Limiting values . . . . . . . . . . . . . . . . . . . . . . . 111

17 Static characteristics . . . . . . . . . . . . . . . . . . 112

18 Dynamic characteristics . . . . . . . . . . . . . . . . 114

18.1 Programmed I/O timing . . . . . . . . . . . . . . . . 115

18.2 DMA timing. . . . . . . . . . . . . . . . . . . . . . . . . . 118

19 Application information . . . . . . . . . . . . . . . . 124

19.1 Typical interface circuit . . . . . . . . . . . . . . . . . 124

19.2 Interfacing a ISP1161A with a SH7709

RISC processor. . . . . . . . . . . . . . . . . . . . . . 124

19.3 Typical software model. . . . . . . . . . . . . . . . . 125

20 Test information. . . . . . . . . . . . . . . . . . . . . . . 126

21 Package outline . . . . . . . . . . . . . . . . . . . . . . . 127

22 Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

22.1 Introduction to soldering surface mount

packages. . . . . . . . . . . . . . . . . . . . . . . . . . . 129

22.2 Reﬂow soldering. . . . . . . . . . . . . . . . . . . . . . 129

22.3 Wave soldering. . . . . . . . . . . . . . . . . . . . . . . 129

22.4 Manual soldering . . . . . . . . . . . . . . . . . . . . . 130

22.5 Package related soldering information . . . . . 130

23 Revision history . . . . . . . . . . . . . . . . . . . . . . 132

24 Data sheet status. . . . . . . . . . . . . . . . . . . . . . 133

25 Deﬁnitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

26 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . 133

27 Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 133