Si3217x-C
ProSLIC® Single-Chip FXS Solutions
Description
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Tracking dc-dc controller with direct connection to MOSFET
Wideband voice support (Si32172/3/6/7)
On-hook transmission
Loop or ground start operation
Smooth polarity reversal
A-Law/u-Law companding, linear PCM
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
DTMF generation
The Si3217x devices are pin-compatible single-channel ProSLIC
products that implement a complete foreign exchange station
(FXS) telephony interface solution in accordance with all relevant
LSSGR, ITU, and ETSI specifications. The Si3217x ProSLIC ICs
are available in a 5x7 mm 42-pin QFN package and operate from
a 3.3 V supply and support 3.3 V and 1.8 V I/O.
The Si32170/1/6/7 devices use a standard PCM/SPI digital
interface to connect to SoCs, while the Si32172/3/5 devices use
Silicon Labs' proprietary three-wire digital Integrated Serial
Interface (ISI) to connect to SoCs with the ISI pre-integrated.
The Si3217x integrated dc-dc controller automatically generates
the optimal battery voltages required for each line state. The
Si3217x ICs are available with voltage ratings of –110 V or –140 V
to support a wide range of ringing voltages. See the Ordering
Guide for the voltage rating of each Si3217x version.
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DTMF detection (Si32170/1/5)
Pulse metering
For more information, visit the Si3217x ProSLIC web page.
Features
3.3 V operation
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Complete FXS solution in 5x7 mm
Choice of PCM/SPI Interfaces or 3-wire ISI bus that combines
PCM, SPI, and interrupt data
Support for 1.8 V I/O
Maximum battery up to –140 V
Pb-free/RoHS-compliant packaging
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Performs all BORSCHT functions
Ideal for short to medium loops
Global programmability
Internal balanced or unbalanced ringing
Patented low power ringing
Simplified configuration and diagnostics
Supported by ProSLIC API
Applications
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Customer Premise Equipment (CPE)
VoIP DSL Gateways and Routers
Wireless Local Loop (WLL)
Integrated Access Devices (IAD)
Analog Terminal Adapters (ATA)
Small Office/Home Office PBX
Ultra low power consumption
Ordering Guide
Part #
SoC Interface Max Vbat
Wideband
DTMF Detection Pulse Metering
Temperature
0 to 70 °C
Si32170-C-FM1
Si32170-C-GM1
Si32171-C-FM1
Si32171-C-GM1
Si32172-C-FM1
Si32172-C-GM1
Si32173-C-FM1
Si32173-C-GM1
Si32175-C-FM1
Si32175-C-GM1
Si32176-C-FM1
Si32176-C-GM1
Si32177-C-FM1
Si32177-C-GM1
PCM/SPI
PCM/SPI
ISI
–140 V
–110 V
–110 V
–140 V
–110 V
–110 V
–140 V
9
9
9
9
–40 to 85 °C
0 to 70 °C
–40 to 85 °C
0 to 70 °C
9
9
–40 to 85 °C
0 to 70 °C
ISI
–40 to 85 °C
0 to 70 °C
ISI
9
9
–40 to 85 °C
0 to 70 °C
PCM/SPI
PCM/SPI
9
9
–40 to 85 °C
0 to 70 °C
–40 to 85 °C
Functional Block Diagrams
CODEC
SLIC
Linefeed
Control
CODEC
SLIC
Linefeed
Control
PCM/
GCI
Interface
FSYNC
DTMF &
Tone Gen
DTMF &
Tone Gen
TIP
TIP
DRX
MISO
ADC
ADC
ADC
ADC
DTX
MOSI
FXS
FXS
RING
RING
Integrated
Caller ID
Linefeed
Monitor
Caller ID
Linefeed
Monitor
CS
SDI
DAC
DAC
DAC
DAC
Serial
Interface
SPI
Control
Interface
Interface
SPI
Ringing
Generator
Ringing
Generator
SDO
SCLK
INT
DSP
DSP
Line Diagnostics
RST
Line Diagnostics
PCLK
DC-DC Controller
DC-DC Contro ler
PLL
PSCLK
DC-DC Controller
DC-DC Contro ler
PLL
Si32170/1/6/7
Si32172/3/5
ProSLIC
Copyright © 2013 by Silicon Laboratories
5.10.2013
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