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关于DP83822IRHBR与AM4376在RGMII模式下通讯时MDC和MDIO的时序问题

Other Parts Discussed in Thread: AM4376

你好!

在使用DP83822IRHBR(配成RGMII模式)和AM4376进行RGMII通讯时,无法建立通讯,并发现MDC和MDIO(在MDC上升沿时读取数据)存在时序问题,如下图中红色圈出所示,MDC在上升沿时存在MDIO状态不明确,不知道是0还是1,?也就是说MDIO的setup时间不够,请问又遇到过这样的问题吗?一般怎么解决?谢谢!