Dual Programmable Extended CODEC/SLIC

The W682388 implements a dual channel FXS telephone line interface optimized for short loop applications. It integrates dual SLIC (Subscriber Line Interface Circuit) functionality with a dual channel programmable CODEC and a dual DC-DC controller.

FEATURES

? Performs complete BORSCHT functions for two channels on a single device

? Internal balanced ringing up to 90VPK (5REN up to 4kft)

? Integrated Power Management

? Integrated DC-DC controller regulates battery voltage to minimize power dissipation in all operating modes

? Programmable linefeed characteristics

? Ringing frequency, amplitude, cadence

? Trapezoidal and Sinusoidal waveforms

? Two-wire AC impedance, transhybrid balance

? Constant Current feed (20 to 41mA)

? Ring trip and loop closure thresholds

? Programmable signal generation

? DTMF generation and detection

? Metering pulse generation (12/16kHz)

? Enhanced Caller ID (FSK) generation (Type I and Type II)

? Tone generation (up to four simultaneous)

? G.711 μ-Law/A-Law / 16-bit linear PCM audio

? Loop test and diagnostics support

? Integrated loopback modes

? Realtime linefeed monitoring

? On-chip temperature sensor

? PCM and SPI bus digital interfaces

? PCM Master and Slave modes supported

? On-chip PLL for flexible clocking options including 1MHz / 2MHz

? 3.3V operation

? Small Footprint Packages: LQFP-64, QFN-64

APPLICATIONS

? Analog Telephone Adapter

? Voice enabled DSL Modems

? Voice enabled Cable Modems

? Residential VoIP Gateways / Routers

? Integrated Access Devices

? Fiber to the Premise/Home (FTTP/H)

? Optical Network Terminals (ONT)

? Set Top Boxes

? Wireless Local Loop

? PBX

? ISDN NT1/TA