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通信設(shè)計(jì)應(yīng)用
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Network Interface and Circuit
Abstract: T1/E1 single-chip transceivers (SCTs) are used in applications that connect directly to outgoing telephone lines. Because phone lines can expose circuitry to hazardous overvoltage or overcurrent conditions, protection networks (e...
2009-04-20 標(biāo)簽：Interface 1527
Pulse Template Measurement
Abstract: In the telecommunication industry it is often necessary to design equipment that interfaces with existing telecommunication systems. To ensure that a piece of equipment functions properly in a legacy system, several application-d...
2009-04-20 標(biāo)簽：Template 1010
Design Migration from DS21Q55
Abstract: The DS21Q55 is a quad multichip module (MCM) device 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 ...
T3/E3/STS-1 LIU Secondary Surg
Abstract: Application note 398 is a design guide that has all the information necessary for a designer to build a network interface circuit for a piece of telecommunications equipment using Dallas Semiconductor T3, E3, or STS-1 line interf...
Extended System Information Bu
Abstract: The 3-wire extended system information bus (ESIB) function allows the interrupt status or other user-selectable alarm status information for multiple single chip transceivers (SCTs) to be accessed in a single read cycle. ...
2009-04-20 標(biāo)簽：bus 1009
Additional Pulse Amplitude Set
Abstract: This application note shows how to use undocumented settings to modify output amplitudes. IntroductionThis application note provides the register settings for the DS2148/DS21348/DS21Q48/DS213Q48 and D...
Modifying the E3 Template Comp
Abstract: This application note describes how to modify the pulse shape (amplitude, rise- and fall-times) of Dallas DS3150, DS315x, and DS325x Line Interface Units (LIUs). IntroductionThis application note desc...
DS21Qx5y BSDL Scan Chain Mappi
Abstract: This application note describes the JTAG hardware boundary scan functions of the quad port single chip transceivers (SCTs). The JTAG functionality for the quad port devices is essentially the same as four separate DS21x5y devices...
2009-04-20 標(biāo)簽：DS21Qx5y 749
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(biāo)簽：Software 1991
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(hù)
摘要：利潤(rùn)率優(yōu)先于可靠性，這是在設(shè)計(jì)任何系統(tǒng)時(shí)都會(huì)被考慮到的一個(gè)重要問(wèn)題。尤其是在電信行業(yè)，日益增強(qiáng)的競(jìng)爭(zhēng)要求從購(gòu)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(biāo)簽：網(wǎng)絡(luò)E3 1607
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(biāo)簽：DS314x 1270
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(shí)現(xiàn)Dallas Semiconductor DS2156DK開(kāi)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(píng)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(jì)，DS31256上電以后不會(huì)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(biāo)簽：DS31256 1095
使用測(cè)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(hào)脈沖總是滿足規(guī)范要求的，但有時(shí)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(kāi)關(guān)實(shí)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(guò)增加冗余來(lái)滿足電信網(wǎng)絡(luò)的高可用性要求。過(guò)去，這些系統(tǒng)曾經(jīng)用繼電器來(lái)實(shí)現(xiàn)N＋1冗余切換。隨著每個(gè)線卡上的T1/E1/J1端口數(shù)和每...
2009-04-20 標(biāo)簽：開(kāi)關(guān)模擬 1449
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(gè)獨(dú)立的DS3/E3成幀器，包括在四路單獨(dú)的DS3或E3信道產(chǎn)生幀并對(duì)其進(jìn)行格式化所必需的全部電路。器件中的每一個(gè)成幀器都是獨(dú)立配置，支持具有告...
2009-04-20 標(biāo)簽：成幀器 1732
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(lái)，T載波和E載波網(wǎng)絡(luò)走過(guò)了一個(gè)...
2009-04-20 標(biāo)簽：收發(fā)器 1809
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(biāo)簽：E3 932
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(biāo)簽：Interface 1018
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(biāo)簽： 556
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(biāo)簽：DS31256 1141
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(biāo)簽：DS2155 1192
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(biāo)簽：DS2155 2159
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(biāo)簽：DS31256 928
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(cè)試。在環(huán)回模式下，收發(fā)器將經(jīng)過(guò)網(wǎng)絡(luò)或一段特定鏈路傳送的信號(hào)由收發(fā)器的...
2009-04-20 標(biāo)簽：收發(fā)器 1162
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