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我用DP83640和stm32f407连接使用RMII接口是否可以实现ieee1588呢，那些gpio口的是否一定要连到cpu上呢？
有一部分IEEE1588的是一定要连的，可以去网页上看看IEEE 1588的应用手册
我想问下，RMII接口是否支持1588呢
