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Original question:

DP83867IR: RGMII length matching

DP83TG720S-Q1: RGMII length matching - data and control signals

Pavel Vaner
Prodigy 20 points

Part Number: DP83TG720S-Q1

Hello,

I am using DP83TG720S for my ethernet 1000base board. I read the datasheet and some other literature about RGMII length matching requirements. I know that I have to match the length of RX signals group and TX signals group.

Should be length matched only for RX data signals(RX_D0, RX_D1, RX_D2, RX_D3) or should be length matched for RX data signals (RX_D0, RX_D1, RX_D2, RX_D3) with a control signal (RX_CTRL) and clock (RX_CLK)?

Thank you for your answers

Pavel