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 頁數(shù)：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 頁數(shù)：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 頁數(shù)：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 頁數(shù)：270 Pages

DALLAS

Quad T1/E1/J1 Transceiver Design Kit Daughter Card

文件：1.60775 Mbytes 頁數(shù)：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 ;

ADI

亞德諾

四路T1/E1/J1收發(fā)器

DS21455和DS21458在單芯片內集成了四路獨立的收發(fā)器，可以用軟件配置為T1、E1或J1工作方式。每個收發(fā)器都由線路接口單元(LIU)、成幀器、HDLC控制器以及TDM背板接口組成，通過8位并行端口實現(xiàn)控制，該并行接口可以配置為Intel或Motorola總線方式。DS21455*可以直接替代過去的DS21Q55四路MCM。DS21458采用了更小的封裝(17mm CSBGA)，并對控制器接口進行了改善，與過去的DS21Q55軟件兼容。\n *DS21455/DS21458上的JTAG功能是指所有四個收發(fā)器共用一個控制器，而DS21Q55則不同，它采用的是每個收發(fā)器一個JTAG控制器的 四路獨立的收發(fā)器，每路都具有以下功能：\n? 完整的T1 (DS1)/ISDN-PRI/J1收發(fā)器功能 \n? 完整的E1 (CEPT) PCM-30/ISDN-PRI收發(fā)器功能 \n? 為時鐘/數(shù)據(jù)恢復與整形提供遠程與短程線路接口 \n? CMI編碼器/解碼器 \n? 無晶振抖動抑制器 \n? 完全獨立的發(fā)送和接收功能 \n? 雙HDLC控制器 \n? 片上可編程的BERT發(fā)生器與檢測器 \n? 75Ω/100Ω/120Ω T1和E1接口的發(fā)送端與接收端匹配電阻可以通過內部軟件選擇 \n? 兩個雙幀彈性緩存，可以與16.384MHz以下的異步背板連接 \n? 16.384MHz、8.192M;

ADI

亞德諾

DS21458四路T1/E1/J1收發(fā)器子卡開發(fā)板

DS21458DK是為DS21458四路T1/E1/J1收發(fā)器提供的、易于使用的評估板。DS21458DK可用作DK101母板或DK2000母板子卡。完整的DS21458DK上包含DS21458四路SCT、變壓器、匹配電阻、配置開關、線路保護電路、網絡連接器，以及母板連接器。DK101/DK2000母板與Dallas的ChipView軟件可以在基于Windows?的PC上實現(xiàn)配置和狀態(tài)寄存器訪問。板上LED用來指示接收信號丟失與中斷狀態(tài)。板上FPGA包含復用邏輯，可以在各種配置下連接各個成幀器端口或將成幀器端口與DK2000相連。\n 每個DS21458DK都與免費的DK101母板一起供貨。對 \n? 演示DS21458四路T1/E1/J1收發(fā)器的主要功能 \n? 包括DS21458四路LIU、變壓器、BNC與RJ45網絡連接器以及端接無源器件 \n? 與DK101或DK2000母板兼容 \n? DK101/DK2000與ChipView軟件提供對DS21458寄存器組的訪問 \n? 外部數(shù)據(jù)發(fā)送/接收很容易訪問設備端成幀器的所有引腳 \n? 存儲器映射FPGA為成幀器端口與DK2000母板提供靈活的時鐘/數(shù)據(jù)/同步連接 \n? 信號丟失與中斷狀態(tài)的LED顯示 \n? 方便閱讀的絲網標記用來區(qū)分所有連接器、跳線和LED的相關信號 \n? 為過壓和過流情況提供網絡接口保護;

ADI

亞德諾

Package：256-BGA；包裝：卷帶（TR） 功能：線路接口單元（LIU） 類別：集成電路（IC） 電信 描述：IC TELECOM INTERFACE 256BGA

AD

亞德諾

Package：256-BGA；包裝：管件 功能：線路接口單元（LIU） 類別：集成電路（IC） 電信 描述：IC TELECOM INTERFACE 256BGA

AD

亞德諾