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关于C6678 SGMII工作时钟的问题

Other Parts Discussed in Thread: TMS320C6678

自己根据开发板设计的板子,两片DSP,每个DSP的SGMII 0口和BCM5396连接,PHY芯片通过SGMII 和 BCM连接;DSP的SGMII参考时钟是156.25,PASCLK输入时钟是100M,这个需要改吗?跟开发板不一样。也不知道内部SGMII工作时钟需要备到多少?