描述 Description

The ZL79238 Next Generation Octal Subscriber Line Audio-processing Circuit (SLAC), in combination with the single channel LE79271 or dual LE79272 SLIC, implements a DSL friendly, high density 8-channel universal telephone line interface with wideband capability. This enables the design of a low cost, high performance, fully software programmable line interface with worldwide applicability. All AC, DC, and signaling parameters are programmable via a microprocessor interface. The ZL792388 has an integrated test tool box which can be used standalone or for high density line cards you can offload a lot of the basic call control and test functions to the LE79124 or LE79128 VCP to help manage calls or resolve faults to the line or line circuit. A full API is available to run on a host processor to simplify software integration.

特性 Features

Optimized for Next Generation Broadband xDSL and triple play applications
? Eliminates transients that could cause CRC errors
Best-in-class GR-844 equivalent testing capability
Ideal for high density, medium and large line count applications
API-compatible with VE790 Series designs
High performance digital signal processor provides programmable control of all major line card functions
? A-law/μ-law and linear codec/filter
? Transmit and receive gain, Two-wire AC impedance, Transhybrid balance, Equalization
? DC loop feeding
? Loop supervision
? Internal ringing generation and integrated ring-trip detection
? Metering generation at 12 kHz and 16 kHzEnvelope shaping and level control
? Envelope shaping and level control
Enhanced line control and line-test support
? DTMF and Modem Tone Detection
? GR-909 and GR-844 Line and circuit testing capability
? Tone generation (DTMF, FSK, and arbitrary tone)
Standard PCM and MPI digital interfaces
General purpose I/O pins, can be used as relay drivers
Features with Le79124 or LE79128 VCP
? 72 to 128 channel call aggregation
? GR-844 equivalent line testing

簡介

ZL792388屬于集成電路（IC）的音頻專用。由制造生產(chǎn)的ZL792388音頻專用音頻專用的半導(dǎo)體器件專為音頻信號的濾波、驅(qū)動、放大、轉(zhuǎn)換和接口而設(shè)計。特征包括功能、應(yīng)用、通道數(shù)、接口、電壓和規(guī)格。應(yīng)用包括音頻系統(tǒng)、汽車音頻、消費類音頻、樂器、專業(yè)音頻、通信系統(tǒng)、電信系統(tǒng)、數(shù)字音頻、驅(qū)動器、前置放大器、信號混合、信號處理、語音觸發(fā)器解決方案和 10 Base-T。