#SNLS5791050 through #SNLS5791053 show some the typical applications for the DP83TC812x-Q1.
Figure 9-1 Typical Application (MII)
Figure 9-2 Typical Application (RMII Slave)
Figure 9-3 Typical Application (RMII Master)
Figure 9-4 Typical Application (RGMII)
Figure 9-5 Typical Application (SGMII)