-2005-07-29发布实施深圳市中兴通讯股份有限公司发布印制电路板设计规范——EMC要求Q/ZX深圳市中兴通讯股份有限公司企业标准(设计技术标准)目次1范围...........................................................................................................................................12规范性引用文件.......................................................................................................................13术语和定义...............................................................................................................................14标准维护办法...........................................................................................................................45信号完整性（SI）设计要求...................................................................................................45.1时钟电路的拓扑选择...............................................................................................................45.2总线SI设计要求.....................................................................................................................55.3信号线通用设计要求...............................................................................................................66PCB布局设计要求..................................................................................................................86.1通用器件布局要求...................................................................................................................86.2时钟器件布局.........................................................................................................................116.3接口器件布局要求.................................................................................................................116.4电源的布局要求.....................................................................................................................137PCB布线设计要求................................................................................................................157.1通用布线设计要求.................................................................................................................157.2时钟电路的布线.....................................................................................................................177.3接口电路的布线.....................................................................................................................197.4电源的布线要求.....................................................................................................................218电源完整性（PI）设计要求.................................................................................................228.1叠层设计.................................................................................................................................228.2信号线的参考平面.................................................................................................................238.3多种电源的分割.....................................................................................................................238.4平面的滤波.............................................................................................................................248.5接口电路的平面分割..........................................................................
