Quad T1/E1/J1 Transceivers

GENERAL DESCRIPTION The DS21455 and DS21458 are quad monolithic devices featuring independent transceivers that can be software configured for T1, E1, or J1 operation. Each is composed of a line interface unit (LIU), framer, HDLC controllers, and a TDM backplane interface, and is controlled via a

四路T1/E1/J1收发器

DS21455和DS21458在单芯片内集成了四路独立的收发器，可以用软件配置为T1、E1或J1工作方式。每个收发器都由线路接口单元(LIU)、成帧器、HDLC控制器以及TDM背板接口组成，通过8位并行端口实现控制，该并行接口可以配置为Intel或Motorola总线方式。DS21455*可以直接替代过去的DS21Q55四路MCM。DS21458采用了更小的封装(17mm CSBGA)，并对控制器接口进行了改善，与过去的DS21Q55软件兼容。\n *DS21455/DS21458上的JTAG功能是指所有四个收发器共用一个控制器，而DS21Q55则不同，它采用的是每个收发器一个JTAG控制器的 四路独立的收发器，每路都具有以下功能：\n• 完整的T1 (DS1)/ISDN-PRI/J1收发器功能 \n• 完整的E1 (CEPT) PCM-30/ISDN-PRI收发器功能 \n• 为时钟/数据恢复与整形提供远程与短程线路接口 \n• CMI编码器/解码器 \n• 无晶振抖动抑制器 \n• 完全独立的发送和接收功能 \n• 双HDLC控制器 \n• 片上可编程的BERT发生器与检测器 \n• 75Ω/100Ω/120Ω T1和E1接口的发送端与接收端匹配电阻可以通过内部软件选择 \n• 两个双帧弹性缓存，可以与16.384MHz以下的异步背板连接 \n• 16.384MHz、8.192M;

封装/外壳：256-BGA 功能：线路接口单元（LIU） 包装：管件 描述：IC TELECOM INTERFACE 256BGA 集成电路（IC） 电信

Quad T1/E1/J1 Transceivers

The DS21455 and DS21458 are quad monolithic devices featuring independent transceivers that can be software configured for Tl, El, or Jl operation.Each is composed of a line interface unit(LIU), framer, HDLC controllers, and a TDM backplane interface, and is controlled via an 8-bit parallel port con • Complete T1 (DS1)/ISDN-PRI/J1 Transceiver Functionality\r\n• Complete E1 (CEPT) PCM-30/ISDN-PRI Transceiver Functionality\r\n• Short- and Long-Haul Line Interface for Clock/Data Recovery and Waveshaping\r\n• CMI Coder/Decoder\r\n• Crystal-Less Jitter Attenuator\r\n• Fully Independent Transmit and ;

Quad T1/E1/J1 Transceivers

GENERAL DESCRIPTION The DS21455 and DS21458 are quad monolithic devices featuring independent transceivers that can be software configured for T1, E1, or J1 operation. Each is composed of a line interface unit (LIU), framer, HDLC controllers, and a TDM backplane interface, and is controlled via a

封装/外壳：256-BGA 功能：线路接口单元（LIU） 包装：管件 描述：IC TELECOM INTERFACE 256BGA 集成电路（IC） 电信

Intellimod??Module Dual-In-Line Intelligent Power Module (20 Amperes/600 Volts)

Description: DIP and mini-DIP IPMs are intelligent power modules that integrate power devices, drivers, and protection circuitry in an ultra compact dual-in-line transfer-mold package for use in driving small three phase motors. Use of 4th generation IGBTs, DIP packaging, and application specific