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【应用笔记】高速设计时PCB板材的选择和板材效应(PCB Dielectric Material Selection and Fiber Weave Effect on High-Speed Channel Routing)
由于数据速率的提升，设计师们正越来越多地选择差分信号串行总线而远离宽的并行总线。
As data rates increase, designers are increasingly moving away from wide parallel
buses to serial buses with differential signaling. Differential signaling uses two output
drivers to drive two independent transmission lines, one line carrying one bit and the
other line carrying its complement. The difference of the two signals measured
between the two traces carries the information. A differential pair is a pair of
transmission lines with some amount of coupling between the two legs of the pair.an528.pdf