LE58QL031中文资料Codec/Filter SLAC Device数据手册Microchip规格书

描述 Description

Microchip's cost-effective, software-programmable solution is the Le58QL02/021/031 QLSLAC and the Le58QL061/063 QLSLAC line of DSP-based voice codec/filters. The four-channel QLSLAC devices handle the analog-to-digital and digital-to-analog conversion, filtering, compression and expansion functions required to interface a telephone's analog voice signals to the digital PCM highway or General Circuit Interface (GCI).

特性 Features

Low-power, 3.3 V CMOS technology with 5-V tolerant digital inputs
Software and coefficient compatible to the Le79Q02/ 021/031 QSLAC device
Performs the functions of four codec/filters
Software programmable
• SLIC device input impedance
• Transhybrid balance
• Transmit and receive gains
• Equalization (frequency response)
• Digital I/O pins
• Programmable debouncing on one input
• Time slot assigner
• Programmable clock slot and PCM transmit clock edge options
Standard microprocessor interface
A-law, µ-law, or linear coding
Single or Dual PCM ports available
• Up to 128 channels (PCLK at 8.192 MHz) per PCM port
• Optional supervision on the PCM highway
1.536, 1.544, 2.048, 3.072, 3.088, 4.096, 6.144, 6.176, or 8.192 MHz master clock derived from MCLK or PCLK
Built-in test modes with loopback, tone generation, and µP access to PCM data
Mixed state (analog and digital) impedance scaling
Performance guaranteed over a 12 dB gain range
Real Time Data register with interrupt (open drain or TTL output)
Supports multiplexed SLIC device outputs
Broadcast state
56 kHz or 293 kHz chopper clock for SLIC devices with switching regulator
Maximum channel bandwidth for V.90 modems

简介

LE58QL031属于集成电路（IC）的电信。由Microchip制造生产的LE58QL031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。