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DS2155 and DS26401 Software Co
Abstract: Application Note 403 describes the software considerations when migrating an existing design based on the DS2155 T1/E1/J1 single chip transceiver (SCT) to the DS26401 T1/E1/J1 octal framer. In comparison, the Dallas Semiconductor...
2009-04-20 標簽：Software 2210
DS2148/DS21348 Hardware Mode
Abstract: Application Note 407 provides a focused view of the functionality of the Dallas Semiconductor/Maxim DS2148/DS21348 selectable E1 or T1 line interface unit (LIU) in hardwar...
T3/E3/STS-1網(wǎng)絡(luò)的冗余保護
摘要：利潤率優(yōu)先于可靠性，這是在設(shè)計任何系統(tǒng)時都會被考慮到的一個重要問題。尤其是在電信行業(yè)，日益增強的競爭要求從購買的設(shè)備中獲得更多的效益。服務(wù)提供商則要求他...
2009-04-20 標簽：網(wǎng)絡(luò)E3 1888
Bit Error Rate Testing the DS3
Abstract: This application note shows how to connect our enhanced bit error-rate tester (BERT) to our DS3/E3 framer using a ITU O.151 pattern in ungapped clock mode. IntroductionThis application note demonstrat...
2009-04-20 標簽：DS314x 1344
Switching Frame Mode In Live T
Abstract: This application note describes the hazard of switching frame mode while a T1 line is active. When using or testing T1 systems, it may be possible to switch between the D4 and ESF framing patterns during live operation. Under cer...
DS2156 Utopia II總線與Dallas演示板的連
摘要：本應(yīng)用筆記介紹怎樣實現(xiàn)Dallas Semiconductor DS2156DK開發(fā)板的DS2156 Utopia II總線與DK101或DK2000演示母板的連接。DK101是低成本演示母板，用于評估Dallas Semiconductor電信IC。IC安裝...
DS2155, DS21Q55, DS2156 Progra
Abstract: This application note provides a detailed description for using the SLC-96 multiframe in the DS2155, DS21Q55, and DS2156. Register values and an example flowchart for software routines allow the user to quickly implement SLC-96 i...
DS31256的初始化步驟
摘要：DS31256 Envoy HDLC控制器在發(fā)送數(shù)據(jù)包之前的初始化順序。 概述按照設(shè)計，DS31256上電以后不會控制PCI總線。所有的物理端口(端口0至15)發(fā)送全1 (非HDLC空閑碼)...
2009-04-20 標簽：DS31256 1327
使用測試寄存器調(diào)整DS315x的脈沖波形
摘要：本篇應(yīng)用筆記介紹如何調(diào)整DS3151、DS3152、DS3153和DS3154的脈沖波形。盡管DS315x的信號脈沖總是滿足規(guī)范要求的，但有時候，這種脈沖形狀并不恰好是客戶最想要的。本應(yīng)用筆記...
利用模擬開關(guān)實現(xiàn)T1/E1/J1的N+1冗余
摘要：具有多端口T1/E1/J1線卡的現(xiàn)代通信系統(tǒng)通過增加冗余來滿足電信網(wǎng)絡(luò)的高可用性要求。過去，這些系統(tǒng)曾經(jīng)用繼電器來實現(xiàn)N＋1冗余切換。隨著每個線卡上的T1/E1/J1端口數(shù)和每...
HFTA-09.0: T3/E3/STS-1 Fiber O
Abstract: This application note will describe what is needed to design a T3/E3/STS-1 Fiber to Copper Media Converter. Such a device will take the copper signal and convert it to an optical signal to be transported over a fiber link. A pair...
DS3144成幀器與DS3154 LIU的連接
摘要：DS3144在一塊硅片上集成了四個獨立的DS3/E3成幀器，包括在四路單獨的DS3或E3信道產(chǎn)生幀并對其進行格式化所必需的全部電路。器件中的每一個成幀器都是獨立配置，支持具有告...
2009-04-20 標簽：成幀器 1962
選擇T1/E1/J1單片收發(fā)器
摘要：本文發(fā)表于“Electronic Products”雜志的2003年10月刊，討論如何選擇T1/E1/J1單芯片收發(fā)器(SCT)。 概述自六十年代引入T載波以來，T載波和E載波網(wǎng)絡(luò)走過了一個...
2009-04-20 標簽：收發(fā)器 2047
Agere Ultramapper器件與Dallas T3/
摘要：本應(yīng)用筆記介紹了我們的T3/E3線路接口單元(LIU)在純信道、transMUX和map/demap應(yīng)用中與Agere Ultramapper™的連接方法。 概述本應(yīng)用筆記介紹了Dallas DS3150或DS31...
2009-04-20 標簽：E3 1158
Connecting the Agere Supermapp
Abstract: This application note shows how to connect our T3/E3 line interface units (LIUs) in clear-channel, transMUX, and map/demap applications with the Agere Ultramappers™. IntroductionThis application...
2009-04-20 標簽：Interface 1218
Elastic Store Operation
Abstract: The elastic store inside of Dallas Semiconductor T1, E1, and J1 devices serves as a dual port buffer between the line side and the system side of the device. It allows the two sides to operate in different clock domains or even a...
2009-04-20 標簽： 662
DS31256 Unchannelized T3/E3/HS
Abstract: This application note provides an example of how to configure a single T3/E3/HSSI/VDSL port for unchannelized operation on the DS31256 in bridge mode. It includes a coding example for easy adaptation to end-user applications. ...
2009-04-20 標簽：DS31256 1378
DS2155移植到DS21458
摘要：DS21458是一款四端口T1/E1/J1單片收發(fā)器(SCT)，具有和DS2155單端口T1/E1/J1 SCT相同的寄存器組。DS2155和DS21458具有相同的軟件架構(gòu)，因而從單端口的DS2155向四端口的DS21458移植比較容易...
2009-04-20 標簽：DS2155 1370
DS2155 and DS26502 Software Co
Abstract: This application note discusses the differences between the DS2155 T1/E1/J1 Single Chip Transceiver and the DS26502 T1/E1/J1/64KCC Bits Element register maps. The DS26502 is a T1/E1/J1/64kHz Composite Clock Bits Element t...
2009-04-20 標簽：DS2155 2308
DS31256 -- T3/E3 MUX/DS3112 Ha
Abstract: Application Note 3344 shows how to configure the hardware connections that can be utilized with various Dallas Semiconductor devices. It includes the HDLC Controller, Framer, MUX and Line Interface Unit. O...
2009-04-20 標簽：DS31256 1053
Dallas Semiconductor T1/E1/J1收
摘要：本應(yīng)用筆記概述了Dallas Semiconductor T1/E1/J1收發(fā)器的環(huán)回功能。環(huán)回模式有助于器件或設(shè)備的診斷測試。在環(huán)回模式下，收發(fā)器將經(jīng)過網(wǎng)絡(luò)或一段特定鏈路傳送的信號由收發(fā)器的...
2009-04-20 標簽：收發(fā)器 1369
T3/E3/STS-1低成本中繼器
要：電信供應(yīng)商正在以更高的速率為越來越多的客戶提供服務(wù)，他們需要規(guī)模更大的網(wǎng)絡(luò)設(shè)施，系統(tǒng)間互聯(lián)的電纜長度也隨之延長?？紤]到價格優(yōu)勢，系統(tǒng)互聯(lián)一般采用銅纜，但隨...
2009-04-20 標簽：中繼器 996
TL16C550D--具有自動流控制的異步通信元件
TL16C550D--具有自動流控制的異步通信元件 The TL16C550D and the TL16C550DI are speed and operating voltage upgrades (but functional equivalents) of the TL16C550C asynchron...
Guidelines for Laying Out T3 a
Abstract: This application note shows how to maintain the proper impedances when laying out a circuit board with a T3/E3 networking interface, using the DS315x LIU products. OverviewThis application note is a g...
2009-04-18 標簽：Interfaces 1329
DS26502的硬件控制模式
摘要：DS26502的數(shù)據(jù)資料包含了在各類應(yīng)用中使用DS26502所需的所有信息。數(shù)據(jù)資料是為使用軟件模式的用戶而寫的，提供了通過控制寄存器配置DS26502所需的信息，但并沒有包含在硬...
2009-04-18 標簽：DS26502 2039
DS2154 - 從A2版移植到D1版
摘要：本應(yīng)用筆記討論了用D1版的DS2154代替A2版的DS2154時可能會遇到的問題。盡管D1版的DS2154可直接替代A2版的DS2154，但是，替換器件后用戶還是有可能遇到一些有關(guān)定時方面的問題。...
2009-04-18 標簽：DS2154 1025
可不使用微控制器配置Dallas Semiconductor
摘要：本篇應(yīng)用筆記介紹如何不另增加復(fù)雜的微控制器來配置Dallas Semiconductor的線路接口單元(LIU)。 LIU的配置可不使用微控制器實現(xiàn)對Dallas的線路接口單元(LIU)...
2009-04-18 標簽：微控制器 779
T3/E3/STS-1 LIU的回波損耗測量
摘要：本應(yīng)用筆記討論了在線路接口單元(LIU)—Dallas Semiconductor公司的DS3150 ― 應(yīng)用中，如何測量并改進回波損耗(RL)。對回波損耗的定義、要求、測量以及改進方法進行了論述。 ...
2009-04-18 標簽：傳輸線路 1161
JJ-20.11-Compatible Interface
Abstract: The Dallas Semiconductor DS2155 or DS21455 single-chip transceiver (SCT) can be used to create an interface that is compatible with the Japanese JJ-20.11 standard. Both the DS2155 and DS21455 have a digital multiplexer and I/O in...
2009-04-18 標簽：Interface 1988
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