描述 Description

The DS21Q58 E1 quad transceiver contains all the necessary functions for connecting to four E1 lines. The DS21Q58 is a direct replacement for the DS21Q50, with the addition of signaling access and improved interrupt handling. It is composed of a line interface unit (LIU), framer, and a TDM backplane interface, and is controlled through an 8-bit parallel port configured for Intel or Motorola bus operations or serial port operation.

特性 Features

? Four Complete E1 (CEPT) PCM-30/ISDN-PRI Transceivers
? Pin Compatible with the DS21Q50 and DS21Q59
? Short-Haul Line Interfaces
? 32-Bit or 128-Bit Crystal-Less Jitter Attenuator
? Frames to FAS, CAS, and CRC4 Formats
? CAS/CCS Signaling Support
? 4MHz/8MHz/16MHz Clock Synthesizer
? Flexible System Clock with Automatic Source Switching on Loss-of-Clock Source
? Two-Frame Elastic-Store Slip Buffer on the Receive Side
? Interleaving PCM Bus Operation Up to 16.384MHz
? Configurable Parallel and Serial Port Operation
? Detects and Generates Remote and AIS Alarms
? Fully Independent Transmit and Receive Functionality
? Four Separate Loopback Functions
? PRBS Generation/Detection/Error Counting
? 3.3V Low-Power CMOS
? Large Counters for Bipolar and Code Violations, CRC4 Codeword Errors, FAS Word Errors, and E Bits
? Eight Additional User-Configurable Output Pins
? 100-Pin (14mm x 14mm) LQFP Package

應(yīng)用 Application

? 上/下路復(fù)用器
? 局端設(shè)備
? 用戶授權(quán)設(shè)備
? DSLAM背板
? IMA
? 線卡
? PBX
? 路由器/交換機(jī)
? 路由器/交換機(jī)
? 定時(shí)系統(tǒng)
? WAN接口

簡介

DS21Q58屬于集成電路（IC）的電信。由制造生產(chǎn)的DS21Q58電信電信接口集成電路 (IC) 為通信網(wǎng)絡(luò)接口提供特定功能和控制，例如以太網(wǎng)切換、線路驅(qū)動器、ISDN、放大器、通道擴(kuò)展器、數(shù)字鎖相環(huán)、DTMF、音頻發(fā)生器和解碼器、回聲消除、檢測器和發(fā)生器、DDA、電話線路監(jiān)控器和主叫號碼標(biāo)識。