交換機架構補充RMII

RMII相對於MII的框圖以下：ui 省去TX_ER緣由是不須要。時鐘採用50M共同時鐘。設計 省去RX_ER緣由是：引自RMII specificationblog RX_ER is important for meeting Hamming Distance requirements. However, PHYs have the possibility of introducing data

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