关于stubs是怎样的走线? $ m& F) w7 h7 {' G• Avoid stubs on high-speed USB signals, as stubs will cause signal reflections and: G p6 Y" N' t+ I3 c Y4 t$ p/ W# l
affect signal quality. If a stub is unavoidable in the design, the total of all the stubs4 C }0 V, G" n3 ~# X
on a particular line should not be greater than 200 mils. 6 N, S1 e9 U- Z, p请翻译,谢谢!