利用CadenceAllegroPCBSI进行SI仿真分析

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1、利用CadenceAllegroPCBSI进行SI仿真分析摘要本文主要针对高速电路中的信号完整性分析，利用CadenceAllegroPCBSI工具进行信号完整性（SI）分析。说明：本手册中的实例均采用CadenceSPB16_2操作实现。目录一、高速数字电路的基本知识.....................................................................................................31.1高速电路的定义.............

2、..............................................................................................31.2高速PCB的设计方法.................................................................................................31.3微带线与带状线............................................

3、...............................................................41.4常见的高速数字电路...................................................................................................51.4.1ECL(EmitterCoupledLogic)射级耦合电路.................................................

4、.......51.4.2CML(CurrentModeLogic)电流模式电路...........................................................61.4.3GTL(GunningTransceiverLogic)电路................................................................61.4.4TTL(TransistorTransistorLogic)电路.......................

5、..........................................71.4.5BTL(BackPlaneTransceiverLogic)电路.............................................................71.5信号完整性..............................................................................................................

6、.....81.4.1反射（Reflection）...............................................................................................81.4.2串扰（Crosstalk）................................................................................................81.4.3过冲（Overshoot）与下冲（Un

7、dershoot）.......................................................91.4.4振铃（Ringring）.................................................................................................91.4.5信号延迟(Delay)................................................................

8、....................................9二、信号完整性分析和仿真流程...............................................................................................112.1SpecctraQuestinterconnectDesi