Allegro165PCBSI仿真流程

AllegroPCBSI：：：：一步一步学会一步一步学会一步一步学会一步一步学会前仿真前仿真前仿真前仿真LearnAllegroPCBSIPre-simulationStepbyStepDocScope:Cadence16.5DocNumber:SFTEC12007Author:DanielZhongCreateDate:2012-04-10Rev:1.00Copyright@2005-2011byShanghaiSoferTechnologyCo.,Ltd.P2/90SoferTechnologyCo.,Ltd...................................121.1高速PCB设计流程......................................................122AllegroPCBSI的前仿真的前仿真的前仿真的前仿真........................................132.1准备仿真模型和其他需求..................................................132.1.1获取所使用元器件的仿真模型...........................................142.1.2获取所使用连接器的仿真模型...........................................152.1.3获取所使用元器件和连接器的器件手册和用户指南等相关资料....................152.1.4获取所需的规范文档..................................................152.1.5了解相关电路和接口工作原理...........................................152.1.6提取与信号完整性相关的要求...........................................152.1.7预先创建拓扑样本...................................................162.1.8预先创建相对于不同阈值电压的眼图模板...................................162.1.9预先创建自定义测量..................................................172.2仿真前的规划..........................................................172.3关键器件预布局.........................................................182.4模型加载和仿真配置.....................................................182.4.1模型的转化........................................................192.4.2使用SIDesignSetup配置...........................................20Copyright@2005-2011byShanghaiSoferTechnologyCo.,Ltd.P3/90SoferTechnologyCo.,Ltd................................................212.4.4设置仿真库........................................................232.4.5设置电源和地网络...................................................252.4.6设置叠层..........................................................292.4.7设置元器件类别.....................................................322.4.8为元器件分配和创建模型..............................................332.4.9设置差分对........................................................422.4.10设置仿真参数.....................................................472.4.11SIDesignAudit相关.............................................552.4.12提取拓扑........................................................572.4.13在SigXP中设置仿真库和仿真参数......................................592.4.14在SigXP中绘制拓扑................................................632.5方案空间分析..........................................................732.5.1输出驱动力扫描分析..................................................762.5.2Stub长度扫描分析...................................................782.5.3线宽线间距扫描分析..................................................792.6方案到约束规则的转化....................................................812.6.1传输线延迟规则的设置................................................822.6.2拓扑结构等传输线特性规则的设置........................................852.6.3传输线耦合规则的设置................................................852.6.4拓扑规则在约束管理器中的应用.........................................86Copyright@2005-2011byShanghaiSoferTechnologyCo.,Ltd.P4/90SoferTechnologyCo.,Ltd........................................89表格表格表格表格表格1：RoutedInterconnectModels参数.....................................50表格2：Simulation栏眉仿真参数...............................................52表格3：IOCellStimulusEdit窗口中的选项....................................73图图图图图1：传统的PCB设计流程图....................................................12图2：AllegroPCBSI高速PCB设计流程图........................................13图3：眼图模式下的眼图模板....................................................16图4：地址、命令和控制信号传输线拓扑............................................17图5：RDIMM的布局示意图......................................................18图6：ModelIntegrity界面..................................................19图7：使用ModelIntegrity将IBIS文件转换至DML格式..............................20图8：CadenceProductChoices产品选择器窗口..................................21图9：AllegroPCBSIGXL界面...............................................22图10：SetupCategorySelection窗口........................................22图11：SetupXnetSelection窗口............................................22图12：AllegroPCBSIGXL关于网络设置的提醒框.................................23Copyright@2005-2011byShanghaiSoferTechnologyCo.,Ltd.P5/90SoferTechnologyCo.,Ltd：SetupLibrarySearchDirectories窗口................................24图14：SetupLibraryFileExtensions窗口...................................24图15：SetupWorkingLibraries窗口.........................................24图16：SetupPowerandGroundNets窗口.....................................25图17：AllegroPCBSIGXL电压赋值窗口.......................................26图18：选择“EditVoltageOnAnyNetInDesign”..............................26图19：IdentifyDCNets窗口。..............................................27图20：AllegroPCBSIGXL关于电源和地网络的提醒框.............................27图21：设置电源和地网络环节的SIDesignAudit窗口...............................28图22：SelectErrorstobeResolved窗口自动修复VTT问题.......................28图23：ChangePinUseofaPin窗口.........................................29图24：选中管脚后的ChangePinUse