SI32260CQC20MV0EVB - Silicon Labs

TIPa

N/C

GPIO2A / SRINGCa

GPIO1a / STIPCa

SRINGDCa

SRINGACa

STIPACa

STIPDCa

CAPPa

CAPMa

SVBATa

SVDC

RSTB

INTB / DTXENB

FSYNC

SDITHRU

PSCLK / PCLK

DATAo / DTX

DATAi / DRX

SDCHa

SDCLa

DCDRVa

AUXoi / DCFFa

AUXdrv / DCFFb

DCDRVb

SDCLb

SDCHb

VDDD

VDDREG

CSB

SCLK

SDO

SDI

SVBATb

CAPMb

CAPPb

IREF

STIPDCb

STIPACb

SRINGACb

SRINGDCb

GPIO1b / STIPCb

GPIO2b / SRINGCb

VDDA

N/C

TIPb

N/C

RINGb

VBATb

N/C

BASEb

N/C

BAT_PO

BASEa

VBATa

RINGa

EPAD 1

EPAD 2

SPI

Control

Interface

PCM/

GCI

Interface

DSP

DTMF &

Tone Gen

Programmable

AC Impedance

and Hybrid

Caller ID

Ringing

Generator

ADC

DAC

CODEC SLIC

Linefeed

Control

Linefeed

Monitor

DC-DC Controller

Line Diagnostics

PLL

PCLK

FSYNC

DRX

DTX

SDI

SDO

SCLK

INT

RST

SPI

Control

Interface

PCM/

GCI

Interface

DSP

DTMF &

Tone Gen

Programmable

AC Impedance

and Hybrid

Caller ID

Ringing

Generator

ADC

DAC

CODEC

DC-DC Controllers

Line Diagnostics

PLL

PCLK

FSYNC

DRX

DTX

SDI

SDO

SCLK

INT

RST

Si32260/1

DAC

Linefeed

CODEC SLIC

DAC

Linefeed

CODEC SLIC

ADC

Linefeed

Control

Linefeed

Monitor

Linefeed

Control

Linefeed

Monitor

RING

TIP

RING

TIP

Si32260/61

Single-Chip Dual ProSLIC®

Description

The Si32260/1 Dual ProSLIC® devices, in a single package,

implement two complete foreign exchange station (FXS) telephony

interfaces. The Si32260/1 devices operate from a 3.3 V supply

and have standard PCM/SPI or GCI bus digital interfaces. A pair of

built-in dc-dc converter controllers can be used to automatically

generate the optimal battery voltage required for each line-state,

optimizing efficiency and minimizing heat generation. The

Si32260/1 devices are designed to operate not only with a tracking

battery supply for each channel for lowest power consumption, but

also with shared battery supplies, for lowest cost. When used with

shared battery supplies, the internal dc-dc controller operates in

Tracking Shared Supply (TSS) mode to deliver power

consumption lower than typical fixed voltage shared rail designs.

Self-testing and metallic loop testing (MLT) (e.g., GR-909) is

facilitated by the built-in DSP, monitor ADC, and test load. The

devices are available with linefeed voltage ratings of –110 V

(Si32260) or –140 V (Si32261) to support high voltage ringing, and

both devices support wideband audio for better-than-PSTN voice

quality. The Si32260/1 devices are available in a 8 x 8 mm 60-pin

QFN package.

Applications

VoIP gateways and routers

xDSL IADs

Optical Network Terminals/Units (ONT/U)

Analog Terminal Adapters (ATA)

Cable eMTA

Wireless Fixed Terminals (WFT)

Wireless Local Loop (WLL)

WiMAX CPE

Private Branch Exchange (PBX)

VoIP MDU gateways

Si32260/61 Features

Two complete FXS channels in 8 x 8 mm

Performs all BORSCHT functions

Ideal for short- or long-loop applications

Ultra low power consumption

Internal balanced or unbalanced ringing

Patented low power ringing

Adaptive ringing

Simplified configuration and diagnostics

Supported by ProSLIC API

GR-909 loop diagnostics

Audio diagnostics with loopback

Integrated test load

Wideband voice support

On-hook transmission

Loop or ground start operation

Smooth polarity reversal

Pulse metering

PCM and SPI bus digital interfaces with programmable

interrupts

Software-programmable parameters:

Ringing frequency, amplitude, cadence, and waveshape

Two-wire ac impedance

Transhybrid balance

DC current loop feed (10–45 mA)

Loop closure and ring trip thresholds

Ground key detect threshold

Integrated dc-dc controllers with direct connection to MOSFET

Three high voltage supply options

Full tracking

Tracking shared supplies

Fixed rail

DTMF generator/decoder

A-Law/µ-Law companding, linear PCM

GCI/IOM-2 mode support

3.3 V operation

Pb-free/RoHS-compliant packaging

Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc.

Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders

Si32260/61

Single-Chip Dual ProSLIC®

Selected Electrical Specifications

Ordering Guide

Parameter Symbol Test Condition Min Typical Max Unit

Ambient Temperature TA

F-Grade 025 70 °C

G-Grade –40 25 85 °C

Supply Voltage VDD 3.13 3.3 3.47 V

Battery Voltage VBAT –15 —–110/–140 V

Maximum Loop Resistance 

(loop + load) RLOOP ILOOP=18 mA, VBAT = –52 V — — 2000 

DC Differential Output 

Resistance RDO ILOOP < ILIM 160 —640 

Idle Channel Noise C-Message weighted — 8 12 dBrnC

PSRR from VDD RX and TX, dc to 3.4 kHz —55 —dB

Longitudinal to Metallic/PCM 

Balance (forward or reverse)

200 Hz to 1 kHz 58 60 —dB

1 kHz to 3.4 kHz 53 58 —dB

Metallic/PCM to Longitudinal Balance 200 Hz to 3.4 kHz 40 — — dB

Longitudinal Impedance 200 Hz to 3.4 kHz at

TIP or RING —50 —

Longitudinal Current per Pin Active off-hook

200 Hz to 3.4 kHz —25 —mA

DC Feed Current — — 45 mA

2-Wire Return Loss 200 Hz to 3.4 kHz 26 30 —dB

Transhybrid Balance 300 Hz to 3.4 kHz 26 30 —dB

Thermal Resistance (QFN-60) θJA —42 —°C/W

FXS Pin Description Max Vbat Temperature

Si32260-C-FM Dual FXS, wideband capable –110 V 0 to 70 °C

Si32260-C-GM Dual FXS, wideband capable –110 V –40 to 85 °C

Si32261-C-FM Dual FXS, wideband capable –140 V 0 to 70 °C

Si32261-C-GM Dual FXS, wideband capable –140 V –40 to 85 °C

*Note: Adding the suffix "R" to the part number (e.g., Si32261-C-FMR) denotes tape and ree

Package Information 60-pin QFN

8.00 BSC

7.50 BSC

Min Typ Max

0.20 0.25 0.30

A0.60 0.65 0.70

E2 6.35 6.40 6.45

E4 2.46 2.51 2.56

0.25 0.30 0.35

6.35 6.40 6.45

0.50 BSC

8.00 BSC

7.50 BSC

E5 3.34 3.39 3.44

L0.35 0.40 0.45

L1 0.05 0.10 0.15

aaa 0.15

bbb 0.15

ccc 0.10

ddd 0.10