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PCIE接口的参考时钟REFCLK如何设计?

Other Parts Discussed in Thread: CDCM9102, CDCE62005

我想用C6657的PCIE接口扩展一个WIFI.

C6657的PCIE需要一个LVDS的参考时钟(PCIECLKP, PCIECLKN),  WIFI芯片的PCIE需要一个HCSL的参考时钟(REFCLKP, REFCLKN)

我理解的是, 这2个时钟由同一个时钟源提供, 如何设计? PCB走线有何要求?

谢谢