LE792388中文资料Next Gen Octal SLAC Device数据手册Microchip规格书

描述 Description

The LE792388 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 LE792388 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.Low Density Chip Set: Octal SLAC (codec) + Long Loop SLICsLe792388 (codec) + Le79271 (SLIC) / Le79272 (Dual SLIC)ZL792588 (codec with External/ Internal Ringing) + Le79271 (SLIC) / Le79272 (Dual SLIC)

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

简介

LE792388属于集成电路（IC）的电信。由制造生产的LE792388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。