SMSC EVB-USB2514BC Revision A Revision 0.3 (05-19-09)
SMSC CONFIDENTIAL - PRELIMINARY USER MANUAL
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EVB-USB2514BC Evaluation Board Revision A
User Guide
EVB-USB2514BC Evaluation Board Revision A User Guide
Revision 0.3 (05-19-09) 2 SMSC EVB-USB2514BC Revision A
SMSC CONFIDENTIAL - PRELIMINARY USER MANUAL
1 Overview
The SMSC USB2514B MultiTRAK™ is a Low-Power, Full-Featured, OEM configurable, Hi-Speed USB
2.0 compliant hub with four downstream ports. Each of these downstream ports in the USB2514B
device is capable of supporting battery charging. The EVB-USB2514BC Evaluation Board
demonstrates a standalone application for the hub with all the features listed below and demonstrates
advanced power saving options and configurable port assignments.
1.1 Features
36-pin QFN RoHS compliant package.
Four USB 2.0 downstream hub ports with individual port power and over-current sense (OCS).
Hi-Speed (480 Mbps), Full-Speed (12 Mbps), and Low-Speed (1.5 Mbps) compatible.
USB Battery Charging is supported on downstream USB Port 1 to a full 1.5 A.
USB Battery Charging is supported on all other downstream USB ports to 500 mA (optional). (In
actual use, the port 5 V path, port power controllers, and OCS circuits must be chosen to fully
support the specification [ex., USB Port 1]).
Multi-Transaction Translator is enabled.
Supports internal default hub configuration. Optionally supports configuration from external
EEPROM.
Low cost 4-Layer space saving design with two outer signal layers, a power inner layer, and a
ground inner layer.
Individual port over-current sensing.
Individual port power control with LEDs for port power indication.
Self-powered operation.
Operates from a single voltage (5.0 VDC, regulated) external power supply.
Single onboard 3.3 VDC regulator.
Red LED indicator for “Active” hub state (optional).
EMI suppression provided by selection of capacitors and inner power/ground PCB layers.
ESD component footprints provided (optional).
Single crystal clock source.
Schematics, layout, and bill of materials are available to minimize new product development time.
1.2 General Description
The EVB-USB2514BC is an evaluation and demonstration platform featuring the USB2514B Ultra Fast
USB 2.0 Hub on a 4-layer RoHS compliant printed circuit board.
The EVB-USB2514BC is designed to demonstrate the unique features of this device using a low cost
PCB implementation with individual port power control for the downstream USB 2.0 ports. Downstream
USB 2.0 port 1 includes a high current port power controller to fully support USB battery charging as
a high current walk up port.
The EVB-USB2514BC is designed to support internal default configuration settings and an external
I2C®1 EEPROM (optional) for custom configured functionality. A location is provided for an external I2C
EEPROM device for configuration at U6. Figure 2.1 and Figure 2.2 show the top and bottom level silk
screen and copper layers.
1.I2C is a registered trademark of Philips Corporation.
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2 Hardware Configuration
2.1 Hardware Description
The EVB-USB2514BC has one onboard regulator, which generates 3.3 VDC from an external 5 VDC
regulated power supply. The USB2514B generates its own 1.2 VDC for internal use with on-chip 1.2
VDC regulators. The internal 1.2 VDC regulator to the oscillator and the PLL is turned off during
suspend to minimize suspend current. The USB2514B consumes power from the 3.3 VDC supply.
Downstream port power is distributed by three power switches that consume power from the 5 VDC
supply. U2 supplies power to the high current downstream port 1. U1 and U3 supply power to the other
three ports at 500 mA. Upstream and downstream port connectors have USB 2.0 compliant decoupling
and a separate shield ground.
2.1.1 Port Assignment
Downstream ports are numbered 1 through 4 with individual port power controllers. The USB2514B
allows any or all of the downstream ports to be configured for high current battery USB charging, and
the EVB-USB2514BC is designed to demonstrate that feature. Downstream port 1 is assigned as the
default battery charging port with a high current port power controller installed.
2.1.2 USB2514B Configuration
Default: The EVB-USB2514B has been set up to support an internal default configuration as
determined by the state of the CFG_SEL2, CFG_SEL1, and CFG_SEL0 pins immediately after reset.
The vendor ID, product ID, language ID, device ID, and other choices have been set using ROM code
defaults.
EEPROM Option: The EVB-USB2514B can load configuration from an external two-wire, I2C
EEPROM U6. The EEPROM must be installed at U6, and the configuration option resistors on the
CFG_SEL2, CFG_SEL1, and CFG_SEL0 pins changed to enable this option. The EEPROM may be
pre-programmed before installation, or be programmed with the USB host using provided SMSC
USBDM applications. This option allows access to all of the configuration registers and ID strings for
the USB2514B device for detailed functional analysis and exercise as desired. The EVB-USB2514B is
compatible with I2C EEPROMs from several manufacturers. The memory capacity must be at least
512 bytes.
2.1.3 Powered State LED
An optional LED (LED5) indicates when +5 VDC power is present.
2.1.4 Activity LED
An optional LED (LED6) indicates when the USB2514B is active (configured and not suspended).
2.1.5 Port Power LEDs
LED1, LED2, LED3, and LED4 indicate when port power is available to the associated downstream
USB port.
2.1.6 Connector Description
The EVB-USB2514B has a set of standard USB style connectors, one of type B for the upstream port
and four of type A for downstream ports. Power is supplied via a 2.0 mm power jack. Ta b l e 2 . 1 lists
all of the connectors. For more details on the pinout of these connectors, please see the EVB-
USB2514BC schematics on the CD-ROM included with your EVB-USB2514BC.
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2.1.7 Layout Considerations
The EVB-USB2514B is designed on four PCB layers--two signal layers and two supply layers. The
PCB layer stackup is shown in Table 2. 2 . All signals are routed on top and bottom layers. Internal
layers are ground and power. Note that the differential signals from the USB2514B match the upstream
and downstream port placement simplifying routing of critical signals.
Table 2.1 Connector Description
CONNECTOR TYPE DESCRIPTION
J1 USB A Downstream USB Port 1
J2 USB A Downstream USB Port 2
J3 USB A Downstream USB Port 3
J4 USB A Downstream USB Port 4
J5 USB B Upstream USB Port 0
J6 Power Jack 2.0 mm +5 VDC Power Supply
Table 2.2 PCB layer stack
Component Side
Solder mask
Layer 1 1.9 - 2.8 mil, finished
Pre-preg 4.25 mil, +/- 0.25 mil FR-4
Layer 2 -- GND 1.3 mil (nominal)
Core ~24 mil FR-4
Layer 3 -- POWER 1.3 mil (nominal)
Pre-preg 4.25 mil, +/- 0.25 mil FR-4
Layer 4 1.9 - 2.8 mil, finished
Solder mask
Solder Side
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Component side top layer is shown in Figure 2.1 with silk screen information to identify component
locations.
Figure 2.1 EVB_USB2514B Top Layer - Component Side
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Figure 2.2 EVB_USB2514B Bottom Layer - Solder Side
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3 Revision History
NAME
REVISION
LEVEL AND
DATE SECTION/FIGURE/ENTRY
CORRECTION
C. Johnson Rev 0.3
(05-19-09)
Section 1.1, "Features" Changed “Low cost 4-Layer space saving
design, two outer signal layers: - power and
ground inner layers.” to “Low cost 4-Layer
space saving design with two outer signal
layers, a power inner layer, and a ground
inner layer.”
Appended “with LEDs for port power
indication” to “Individual port power control.”
Removed redundant item “Port OCS/port
power control interface...”
Removed unsupported feature “3.3 VDC
power LED indicator.”
Appended “(optional)” to “Red LED indicator
for “Active” hub state.”
Changed “Schematics, layout, and bill of
materials are included to minimize new
product development time.” to “Schematics,
layout, and bill of materials are available to
minimize new product development time.”
Section 1.2, "General
Description"
Removed the incorrect reference to a socket
in the last paragraph.
Removed the redundant Figure 1.1.
Section 2.1, "Hardware
Description"
Changed the last sentence into two
sentences for clarity.
Moved the last sentence of section 2.1.1 to
the end of this section.
Section 2.1.2, "USB2514B
Configuration"
Changed the first sentence to “...support an
internal default configuration...”
Correct a typographical error “U4” to “U6” in
the second paragraph.
Section 2.1.6, "Connector
Description"
Correct the last sentence to reference the
schematics on the included CDROM.
Section 2.1.7, "Layout
Considerations"
Revise the first sentence punctuation from
“... PCB layers, two...” to “... PCB layers --
two...”.
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E. Wang Rev. 0.2
(05-11-09)
Per E. Wang: Removed xD-Picture Card
disclaimer from Cover Master Page
SMSC makes the following part-numbered device available for
purchase only by customers who are xD-Picture Card licensees:
USB2660. By purchasing or ordering any of such devices, Buyer
represents, warrants, and agrees that Buyer is a duly licensed
Licensee under an xD-Picture CardTM License Agreement with Fuji
Photo Film Co., Ltd., Olympus Optical Co., Ltd., and Toshiba
Corporation; and that Buyer will maintain in effect such xD-Picture
Card license and will give SMSC reasonable advance notice of any
termination or expiration of such xD-Picture Card license, but in no
event less than five days advance notice. SMSC may discontinue
making such devices available for purchase by Buyer and/or
discontinue further deliveries of such devices if such xD-Picture Card
license shall expire, terminate, or cease to be in force, or if Buyer is
or becomes in default of such xD-Picture Card license.
Various Added hyphen before pin in “#-pin QFN”
Downstream = Removed spaces
Over-current = Added hyphenation
Mbits/s = Changed to Mbps
Removed hyphen between “silk screen”
“High Speed” = “Hi-Speed” per USB-IF
USB2.0 = USB 2.0
Added registered trademark and footnote for
I2C technology.
Applied consistent capitalization throughout
Applied hyperlinked cross-referencing
Figure 1.1 instead of “Figure 1”
Trademarks only and acronyms are only
described when first mentioned--all other
instances have been deleted
Various A space appears between units and units of
measurement per
1. the SI Style Guide,
2. The Chicago Manual of Style, and
3. Matt Young’s The Technical Writer’s
Handbook.
Section 1.1, "Features" Removed “Features the USB2514B in a...”
Section 2.1, "Hardware
Description"
“The USB2514B generates is own” now
reads “its own”.
The phrase “for use using on-chip 1.2 VDC
regulators.” now reads “for use with on-chip
1.2 VDC regulators. use with on-chip 1.2
VDC regulators.
Added a comma after “U3”.
Section 2.1.1, "Port
Assignment"
Changed “5 Volt power” to “5 volts of power”
Changed “battry charging port” to “battery...”
NAME
REVISION
LEVEL AND
DATE SECTION/FIGURE/ENTRY
CORRECTION
EVB-USB2514BC Evaluation Board Revision A User Guide
SMSC EVB-USB2514BC Revision A 9 Revision 0.3 (05-19-09)
SMSC CONFIDENTIAL - PRELIMINARY USER MANUAL
E. Wang Rev. 0.2
(05-11-09)
Section 2.1.2, "USB2514B
Configuration"
Applied bold formatting to keyword
subheadings:
1. Default
2. EEPROM Option
Removed “and” before “device ID”.
Added a comma after CFG_SEL1 when it
appeared in a series.
The phrase “are set using...” now reads
“have been set using ROM code defaults”
Section 2.1.6, "Connector
Description"
Changed “the connectors” to “these
connectors”.
Added the following cross-references to the
end of the last sentence “see the schematics
shown in Figure 2.1 and Figure 2.2”.
Figure 2.1 and Figure 2.2 Updated Figure titles from
EVB_USB660 and EVB_USB2517 to
EVB_USB2514B
Section 1.2, "General
Description," on page 2
Per E. Wang:
“Customized configured” now reads “custom
configured”.
Per T. Phan:
1. References to 1.8 V have been changed to
1.2 V (3 instances)
2. The first paragraph:
The EVB-USB2514BC is an evaluation and
demonstration platform featuring the
USB2514B Ultra Fast USB 2.0 Hub, Flash
Media Controller, and Protocol Bridge Combo
on a 4-layer RoHS compliant printed circuit
board.
now reads:
The EVB-USB2514BC is an evaluation and
demonstration platform featuring the
USB2514B Ultra Fast USB 2.0 Hub on a 4-
layer RoHS compliant printed circuit board.
Per C. Johnson:
3. Deleted the third paragraph:
The EVB-USB2514BC is compatible with
Microsoft Vista, Windows XP, Windows ME,
Windows 2k SP4, Apple OSx and Linux Mass
Storage Class Drivers.
C. Johnson Rev. 0.1
(04-09-09)
Initial document creation.
NAME
REVISION
LEVEL AND
DATE SECTION/FIGURE/ENTRY
CORRECTION
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