Si32260/1
SINGLE-CHIP DUAL PROSLIC
Si32260/1 Features
Two complete FXS channels in a single Software-programmable parameters:
6 x 8 mm or 8 x 8 mm package Ringing frequency, amplitude,
Performs all BORSCHT functions cadence, and waveshape
Ideal for short- or long-loop applications Two-wire ac impedance
Ultra low power consumption Transhybrid balance
Internal balanced or unbalanced ringing DC current loop feed (1045 mA)
Patented low power ringing Loop closure and ring trip thresholds
Adaptive ringing Ground key detect threshold
Simplified configuration and diagnostics Integrated dc-dc controllers with direct
connection to MOSFET
Supported by ProSLIC API
Three high voltage supply options
GR-909 loop diagnostics
Ordering Information
Full tracking
Audio diagnostics with loopback
Tracking shared supplies
Integrated test load
See page 45.
Fixed rail
Wideband voice support
DTMF generator/decoder
On-hook transmission
A-Law/-Law companding, linear PCM
Loop or ground start operation
GCI/IOM-2 mode support
Smooth polarity reversal
Pin Assignments
3.3 V operation
Pulse metering
Pb-free/RoHS-compliant packaging
PCM and SPI bus digital interfaces with
Si32260/1 8x8 mm
programmable interrupts
TIPa 1 46 TIPb
Applications
N/C 2 45
N/C
GPIO2A / SRINGCa 3 44 VDDA
GPIO1a / STIPCa 4 43 GPIO2b / SRINGCb
HVPAD
VoIP gateways and routers Wireless Fixed Terminals (WFT)
SRINGDCa 5 42 GPIO1b / STIPCb
SRINGACa 6 41 SRINGDCb
xDSL IADs Wireless Local Loop (WLL)
STIPACa
7 40 SRINGACb
STIPDCa 8 39 STIPACb
Optical Network Terminals/Units (ONT/U) WiMAX CPE
38
CAPPa 9 STIPDCb
Analog Terminal Adapters (ATA) Private Branch Exchange (PBX) CAPMa 10 37
IREF
SVBATa 11 36 CAPPb
GND PAD
Cable eMTA VoIP MDU gateways
SVDC 12 35
CAPMb
RSTB 13 34 SVBATb
Description INTB / DTXENB 14 33 SDI
FSYNC 15 32
SDO
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
3.3V supply and have standard PCM/SPI or GCI (8x8mm package only) bus digital
interfaces. A pair of built-in dc-dc converter controllers can be used to automatically
Si32260/1 6x8 mm
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
1
GPIO2A / SRINGCa 41 VDDA
battery supplies, for lowest cost. When used with shared battery supplies, the internal dc-dc
2
GPIO1a / STIPCa 40 GPIO2b / SRINGCb
controller operates in Tracking Shared Supply (TSS) mode to deliver power consumption
SRINGDCa 3 39 GPIO1b / STIPCb
4 38
SRINGACa SRINGDCb
lower than typical fixed voltage shared rail designs (shared supplies are not currently
HVPAD
STIPACa 5 37 SRINGACb
supported by the 6 x 8 mm package option). Self-testing and metallic loop testing (MLT) STIPDCa 6 36 STIPACb
CAPPa 7
35 STIPDCb
(e.g., GR-909) is facilitated by the built-in DSP, monitor ADC, and test load. The devices are
8
CAPMa 34 IREF
SVBATa 9 33 CAPPb
available with linefeed voltage ratings of 110 V (Si32260) or 140 V (Si32261) to support
10 32
SVDC CAPMb
high voltage ringing, and both devices support wideband audio for better-than-PSTN voice
11
RSTB 31 SVBATb
GNDPAD
INTB / DTXENB 12 30 SDI
quality. The Si32260/1 devices are available in a 6 x 8 mm 47-pin QFN package or an
FSYNC 13 29 SDO
8 x 8 mm 60-pin QFN package. 14
PCLK 28 SCLK
DTX 15 27 CSB
16 26
DRX VDDREG
Patents pending
Rev. 1.4 4/14 Copyright 2014 by Silicon Laboratories Si32260/1
SDITHRU 16
PCLK 17 60 N/C
DATAo 18 59 RINGa
17
SDCHa
47 TIPa 19 58
DATAi N/C
SDCLa 18
SDCHa 20 57 VBATa
46 RINGa 21 56
DCDRVa 19 SDCLa N/C
DCDRVa 22 55 BASEa
20
DCFFa
VBATa
45
AUXoi 23 54 BAT_PO
21
DCFFb 53
AUXdrv 24 N/C
44 VBATb
22 DCDRVb 25 52 BASEb
DCDRVb
SDCLb 26 51 N/C
SDCLb 23
43 RINGb
27 50
SDCHb VBATb
SDCHb 24
28 49 N/C
VDDD
42 TIPb
48
25 VDDREG 29 RINGb
VDDD
30 47 N/C
CSB
SCLK 31Si32260/1
Functional Block Diagram
CODCODCODEEECCC SLISLICC
PCPCM/M/
FSFSYNYNCC
DTDTMFMF & &
TIP
DRDRXX GCGCII LiLineneffeeeedd
ADC
ToTone Genne Gen ADCADC
CContontroroll
DTDTXX
InInteterrffacacee Channel A
RING
Caller IDCaller ID
LiLineneffeeeedd
CSCS DAC
DACDAC
MoniMonittoorr
SDSDII
SPSPII
RiRingingnging
SDSDOO
CoControlntrol
CODEC SLIC
GeneGeneratoratorr
SCSCLKLK
DSPDSP
InInteterrffacacee TIP
INTINT Linefeed
ADC
LineLine Diag Diagnosticsnostics Control
RSRSTT
Channel B
RING
Linefeed
DAC
PCPCLKLK Monitor
PLPLLL DCDC-DC-DC Co Contntrollerrollers
Si32260/1
2 Confidential Rev. 1.4
ProgramProgrammmaable ble
AC ImpedanceAC Impedance
and Hybridand Hybrid
Linefeed Linefeed