cpci电源规范文档格式.docx

cpci电源规范文档格式.docx

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　　1.1cpci目标..................................................................................................................................................-1-

　　1.2背景和术语................................................................................................................................................-1-

　　1.3预期读者....................................................................................................................................................-1-

　　1.4cpci特性..................................................................................................................................................-1-

　　1.5应用文献....................................................................................................................................................-1-

　　1.6管理............................................................................................................................................................-1-

　　1.7名字和标志的用法....................................................................................................................................-1-2特性设置................................................................................................................................................................-2-

　　2.1外形特征....................................................................................................................................................-2-

　　2.2连接器........................................................................................................................................................-3-

　　2.3模块化........................................................................................................................................................-4-

　　2.4热插拔功能................................................................................................................................................-4-3电气需求................................................................................................................................................................-4-

　　3.1适配器设计准则........................................................................................................................................-4-

　　3.1.1退耦需求..........................................................................................................................................-4-

　　3.1.2cpci附加信号..............................................................................................................................-5-

　　3.1.3cpci端接终端..............................................................................................................................-5-

　　3.1.4外围适配器信号端接长度..............................................................................................................-5-

　　3.1.5阻抗特性..........................................................................................................................................-6-

　　3.1.6系统槽适配器信号端接长度..........................................................................................................-6-

　　3.1.7外围适配器pci时钟信号长度......................................................................................................-6-

　　3.1.8上拉定位..........................................................................................................................................-6-

　　3.1.9适配板连接器屏蔽需求..................................................................................................................-7-

　　3.2背板设计准则............................................................................................................................................-7-

　　3.2.1阻抗特性....................................................................................................................................-7-

　　3.2.28插槽背板终端...........................................................................................................................-7-

　　3.2.3信号环境......................................................................................................................................-8-

　　3.2.4idsel板选信号分配..................................................................................................................-8-

　　3.2.5Req＃/gnt＃信号线分配.........................................................................................................-8-

　　3.2.6pci中断绑定...............................................................................................................................-9-

　　3.2.7cpci附加信号..........................................................................................................................-10-

　　3.2.8电源分配......................................................................................................................................-12-

　　3.2.9电源去耦......................................................................................................................................-13-

　　3.2.10健全（healthy＃）..................................................................................................................-13-

　　3.333mhzpci时钟分配.............................................................................................................................-13-

　　3.3.1背板时钟线路设计准则............................................................................................................-14-

　　3.3.2系统槽适配板时钟线路设计准则.............................................................................................-14-

　　3.464位设计准则.....................................................................................................................................-14-

　　3.566mhz电气需求...................................................................................................................................-15-

　　3.5.166mhz适配板设计准则...........................................................................................................-15-

　　3.5.266mhz系统槽适配板设计准则...............................................................................................-16-

　　3.5.366mhz背板设计准则...............................................................................................................-16-

　　3.5.466mhzpci时钟分配.................................................................................................................-16-

　　3.5.566mhz系统槽适配板时钟线设计准则...................................................................................-16-

　　3.5.666mhz热插拔...........................................................................................................................-17-

　　3.6系统和适配板接地................................................................................................................................-17-

　　3.6.1适配器前面板接地需求..............................................................................................................-17-

　　3.6.2背板接地需求..............................................................................................................................-17-

　　3.7cpci缓冲器模型...................................................................................................................................-17-4机械需求........................................................................................................................................................-17-

　　4.1适配板需求..........................................................................................................................................-17-

　　4.1.13u板卡........................................................................................................................................-18-

　　4.1.26u板卡........................................................................................................................................-18-

　　4.1.3后面板i/o板卡...........................................................................................................................-18-

　　4.1.4esd静电导出条..........................................................................................................................-18-

　　4.1.5esd接线柱..................................................................................................................................-19-

　　4.1.6剖视图..........................................................................................................................................-19-

　　4.1.7构件略图和翘曲（componentoutlineandwarpage）...............................................................-19-

　　4.1.8焊料侧盖......................................................................................................................................-19-

　　4.1.9前面板..........................................................................................................................................-28-

　　4.1.10系统槽识别..................................................................................................................................-28-

　　4.2后面板i/o适配器需求..........................................................................................................................-28-

　　4.2.1机械部件........................................................................................................................................-28-

　　4.2.2电源................................................................................................................................................-31-

　　4.2.3后面板按键....................................................................................................................................-31-

　　4.3背板需求..................................................................................................................................................-3