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 Si3241 includes internal ringing generation to eliminate centralized ringers and ringing relays.

Features
- Performs all BORSCHT functions
- Ideal for applications up to 20 kft (6 km)
- Internal adaptive balanced ringing to
  –135 VPK(Si3206) and –110 VPK(Si3203)
- Internal unbalanced ringing
- Power offloading
- Low power consumption
- 2.5 Vrms pulse metering (12/16 kHz)
- Software programmable parameters:
  - Ringing frequency, amplitude, cadence, and wave shape
  - 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
- Key telephone systems
- Optical networking terminals (ONT)
- VoIP Gateways