所需E币: 4
时间: 2020-4-3 15:52
大小: 3.12KB
NetbookSchematicguidelinereduceEMCSchematicguidelinereduceEMCSchematicguidelineClock:1.AllclocktracesaddRCfilteronthesourceside,andiftheclockdrivetwochipset(orabove)referthefollowingcircuit.所有时钟线要作源端RC匹配,如果时钟输出有两个或多个负载,参考下列电路图.2.Useπ(C-L-C)typeoffilterforOscillators’powersupplyinput.在晶振的电源输入端加π型滤波.3.IftheICclockoutputpinsarenotused,webestcloseitbythroughsoftware.AddRorCbypasstoGNDasterminalifwecan’tcloseitbysoftware如果有芯片的时钟输出脚没有用到,首先看能否用软件关掉该脚的输出,如果不行,在时钟脚加R或C到地4.Suggestdon’tlayanothertracejustfortheclocktestpoint.时钟线上不要加测试点5.Suggestaddingdampingresistorsonthehighspeedsignaltracesorreserve0ohmresistance.建议在所有高速信号线上串阻尼电阻,或者预留0ohm电阻.Power:1.Thebulkcapacitorswhichu……