文件名称：High Speed USB Platform Design Guidelines_pdg_r1_0.pdf
文件大小：298KB
文件格式：PDF
更新时间：2011-10-18 06:25:53
USB
英文版USB设计规范 1 Introduction ________________________________________________________4 1.1 Background ___________________________________________________________________4 2 Terminology________________________________________________________5 3 Layout Guidelines___________________________________________________5 3.1 General Routing and Placement ___________________________________________________6 3.2 High Speed USB Trace Spacing___________________________________________________6 3.3 High Speed USB Termination ____________________________________________________7 3.4 High Speed USB Trace Length Matching____________________________________________7 3.5 High Speed USB Trace Length Guidelines___________________________________________7 3.6 Plane Splits, Voids and Cut-Outs (Anti-Etch)________________________________________7 3.7 Layer Stacking_________________________________________________________________8 3.8 Component Placement___________________________________________________________8 4.1 Stubs ________________________________________________________________________9 4.2 Poor Routing Techniques ________________________________________________________9 5 EMI/ESD Considerations_____________________________________________10 5.1 EMI - Common Mode Chokes___________________________________________________10 5.2 ESD________________________________________________________________________12 6 Front Panel Solutions_______________________________________________12 6.1 Cables ______________________________________________________________________12 6.2 Motherboard/PCB Mating Connector______________________________________________13 6.3 Front Panel Connector Card _____________________________________________________14 7 High Speed USB Design Checklist ____________________________________17