SI3245 Datasheet, PDF (1/2 Pages) Silicon Laboratories – Quad ProSLIC® Programmable CMOS SLIC/Codec

Si3245/Si3203
Quad ProSLIC® Programmable CMOS SLIC/Codec
Description
The Quad ProSLIC^® is a series of low-voltage CMOS
devices that integrate both SLIC and codec
functionality into a single IC to provide a complete
four-channel analog telephone interface in
accordance with all relevant Telcordia, ITU, and ETSI
specifications. The Si3245 supports centralized
ringing for long loop and legacy applications. On-chip
subscriber loop and audio testing allows remote
diagnostics and fault detection with no external test
equipment or relays. The Quad ProSLIC devices
operate from a single 3.3 V supply and interface to
standard PCM/SPI or GCI bus digital interfaces. The
Si3203 linefeed interface IC performs all high-voltage
functions and operates from a 3.3 V supply as well
as three battery supplies up to –110 V. The Quad
ProSLIC devices are available in a 100-pin thin quad
flat package (TQFP), and the Si3203 is available in a
thermally-enhanced 48-pin thin quad flat package
(TQFP) or 40-pin quad flat no-lead (QFN) package.
Features
- Performs all BORSCHT functions
- Ideal for applications up to 20 kft (6 km)
- External bulk ringer support
- Power offloading
- Low power consumption
- 2.5 V_rms pulse metering (12/16 kHz)
- Software programmable parameters:
- Two-wire ac impedance
- Transhybrid balance
- DC current loop feed (10–50 mA)
- Loop closure and ring trip thresholds
- Ground key detect threshold
- Power alarms
- Automatic switching of up to three battery supplies
- On-hook transmission
- Loop or ground start operation
- Smooth polarity reversal
- DTMF decoder
- Dual tone generators
- Caller ID generator
- A-Law/µ-Law companding, linear PCM
- PCM and SPI bus digital interfaces with program-
mable interrupts
- GCI/IOM-2 mode support
- 3.3 V operation
- GR-909/844 loop diagnostics
- Audio diagnostics with loopback
- Pb-free/RoHS compliant packages
Applications
- Digital loop carrier (DLC) line cards
- Central office (CO) line cards
- Integrated voice and data (IVD) line cards
- Private Branch Exchange (PBX) systems
TIP
Channel 1
RING
TIP
Channel 2
RING
SLIC CODEC _{PCM/GCI SPI}
Linefeed
Control
ADC
DTMF &
Linefeed
Monitor
DAC
Tone Gen
Caller ID
SLIC
Linefeed
Control
CODEC
ADC
Line
Diagnostics
Linefeed
Monitor
DAC
Ring Trip
Detection
DSP
CODEC
ADC
SLIC
Linefeed
Control
DAC
Linefeed
Monitor
CODEC
ADC
SLIC
Linefeed
Control
DAC
Linefeed
Monitor
TIP
Channel 3
RING
TIP
Channel 4
RING
ProSLIC
Copyright © 2007 by Silicon Laboratories
7.17.07