62.6.20 PHY Interface

Different PHY interfaces are supported by the Gigabit Ethernet MAC:

MII
RMII
RGMIIv1.3

The RGMII should only be used for 1000 Mbps operation. The MII interface is provided for 10/100 operation and uses txd[3:0] and rxd[3:0]. The RMII interface is provided for 10/100 operation and uses txd[1:0] and rxd[1:0].

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