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