SNLA370A December 2020 – December 2020 DP83TG720R-Q1 , DP83TG720S-Q1
This application note discusses the differences between the two Ethernet PHYs and details how these differences can be accommodated on a single design. With proper component selection and place-holders, same PCB can be re-used for DP83TC811 and DP83TG720. Layout constraints of gigabyte PHY are recommended to be followed (for example RGMII constraints for gigabyte speed) to have the board's parasitics/delays suitable for both DP83TG720 and DP83TC811.