SI32260 Datasheet, PDF (1/3 Pages) Silicon Laboratories – Single-Chip Dual ProSLIC

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
FSYNC
DRX
DTX
CS
SDI
SDO
SCLK
INT
RST
PCLK
PCM/
GCI
Interface
DTMF &
Tone Gen
Caller ID
SPI
Control
Interface
Ringing
Generator _DSP
Line Diagnostics
CODEC
AADDCC
SLIC
Linefeed
Control
DDAACC
Linefeed
Monitor
CODEC
ADC
SLIC
Linefeed
Control
PLL
DDCC--DDCCCCoonnttrroollleerrs ^DAC
Linefeed
Monitor
Si32260/1
TIP
RING
TIP
RING
TIPa 1
N/C 2
GPIO2A / SRINGCa 3
GPIO1a / STIPCa 4
SRINGDCa 5
SRINGACa 6
STIPACa 7
STIPDCa 8
CAPPa 9
CAPMa 10
SVBATa 11
SVDC 12
RSTB 13
INTB / DTXENB 14
FSYNC 15
EPAD 1
EPAD 2
46 TIPb
45 N/C
44 VDDA
43 GPIO2b / SRINGCb
42 GPIO1b / STIPCb
41 SRINGDCb
40 SRINGACb
39 STIPACb
38 STIPDCb
37 IREF
36 CAPPb
35 CAPMb
34 SVBATb
33 SDI
32 SDO
ProSLIC
Copyright © 2011 by Silicon Laboratories
7.8.11