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DP83867IR: 关于全双工和半双工

Part Number: DP83867IR

请教个问题,DP83867IR可选全双工或者半双工。

全双工的意思是,4对差分线都可以同时既能发送又能接收吗?一对线上如何实现同时发送和接收呢?

如果是半双工,是如何工作的呢?

非常感谢!