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

文件：1.65296 Mbytes 页数：270 Pages

Dallas

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

文件：1.65296 Mbytes 页数：270 Pages

Dallas

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

文件：1.65296 Mbytes 页数：270 Pages

Dallas

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

文件：1.65296 Mbytes 页数：270 Pages

Dallas

Quad T1/E1/J1 Transceiver Design Kit Daughter Card

文件：1.60775 Mbytes 页数：32 Pages

Maxim

美信

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 ;

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亚德诺

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;

ADI

亚德诺

DS21458四路T1/E1/J1收发器子卡开发板

DS21458DK是为DS21458四路T1/E1/J1收发器提供的、易于使用的评估板。DS21458DK可用作DK101母板或DK2000母板子卡。完整的DS21458DK上包含DS21458四路SCT、变压器、匹配电阻、配置开关、线路保护电路、网络连接器，以及母板连接器。DK101/DK2000母板与Dallas的ChipView软件可以在基于Windows®的PC上实现配置和状态寄存器访问。板上LED用来指示接收信号丢失与中断状态。板上FPGA包含复用逻辑，可以在各种配置下连接各个成帧器端口或将成帧器端口与DK2000相连。\n 每个DS21458DK都与免费的DK101母板一起供货。对 \n• 演示DS21458四路T1/E1/J1收发器的主要功能 \n• 包括DS21458四路LIU、变压器、BNC与RJ45网络连接器以及端接无源器件 \n• 与DK101或DK2000母板兼容 \n• DK101/DK2000与ChipView软件提供对DS21458寄存器组的访问 \n• 外部数据发送/接收很容易访问设备端成帧器的所有引脚 \n• 存储器映射FPGA为成帧器端口与DK2000母板提供灵活的时钟/数据/同步连接 \n• 信号丢失与中断状态的LED显示 \n• 方便阅读的丝网标记用来区分所有连接器、跳线和LED的相关信号 \n• 为过压和过流情况提供网络接口保护;

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亚德诺

Package：256-BGA；包装：卷带（TR） 功能：线路接口单元（LIU） 类别：集成电路（IC） 电信 描述：IC TELECOM INTERFACE 256BGA

AD

亚德诺

Package：256-BGA；包装：管件 功能：线路接口单元（LIU） 类别：集成电路（IC） 电信 描述：IC TELECOM INTERFACE 256BGA

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亚德诺