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各位老师，我想问一下C6678以太网子系统里的以太网交换机模块、SGMII模块、MAC模块、MDIO模块、ALE模块各有什么作用，在进行网络数据传输时它们怎么进行配合？
看一下EMAC user guide，或者在网上百度一下你想了解的网络模块都有相关说明的。
http://www.ti.com/lit/ug/sprugv9d/sprugv9d.pdf
