器件名称: W681388DG
功能描述: Single Programmable Extended CODEC/SLIC
文件大小: 130.84KB 共2页
简 介:Winbond W681388
Single Programmable Extended CODEC/SLIC
he W681388 implements a single channel FXS telephone line interface optimized for short loop applications. It integrates SLIC (Subscriber Line Interface Circuit) functionality with a programmable CODEC and a DC-to-DC controller. The SLIC supports internal ringing up to 90 VPK (5 REN at 4 kft), ideal for customer premise equipment (CPE). The CODEC can be configured for μ-law/A-law or 16-bit linear PCM encoding and supports a comprehensive set of signaling capabilities required to supervise and control both telephone lines. These include tone generation (including ring tones), DTMF generation and detection as well as FSK and metering pulse generation. An on-chip pulse width modulation (PWM) driver allows the control of DC-to-DC conversion for the line. Programmable impedance and transhybrid balancing allow for worldwide deployment.
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FEATURES
Performs complete BORSCHT functions for a single channel with 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 generat……
