LE79Q2281数据手册集成电路（IC）的电信规格书PDF

描述 Description

The Le79Q2281 Quad Intelligent Subscriber Line Audio Processing Circuit (ISLAC), in combination with VE790 Series SLIC devices, implements four-channel universal telephone line interface. The Le79Q2281 Quad ISLAC device has integrated self-test and line-test capabilities to resolve faults to the line or line circuit. The integrated test capabilities are crucial for remote applications where dedicated test hardware is not cost effective.

特性 Features

High performance digital signal processor provides programmable control of all major line card functionsA-law/µ-law and linear codec/filter
DC loop feeding
Internal ringing generation and integrated ring-trip detection
Adaptive hybrid balance
Line and circuit testing - Meets GR-909 and GR-844 test requirements
Tone generation (DTMF, FSK, random noise, and arbitrary tone)
Metering generation at 12 kHz and 16 kHz
Modem Tone Detection

简介

LE79Q2281属于集成电路（IC）的电信。由制造生产的LE79Q2281电信电信接口集成电路 (IC) 为通信网络接口提供特定功能和控制，例如以太网切换、线路驱动器、ISDN、放大器、通道扩展器、数字锁相环、DTMF、音频发生器和解码器、回声消除、检测器和发生器、DDA、电话线路监控器和主叫号码标识。