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DP83867ERGZ-R-EVM: Electrical Characteristics(Voh,Vol/Vih,Vil) of RGMII

Part Number: DP83867ERGZ-R-EVM
Other Parts Discussed in Thread: DP83867IR

May I have a question for DP83867IR RGMII signal Voltage.

 DP83867RRGZ has RGMII interface.

Question1. How much the signal voltage spec Rx,Tx(Voh/Vol,Vih,Vil) in RGMII? 

Question2. Does it same spec with clock and Data?



  • Question3. There is RGMII signal spec in "7.9 RGMII Timing"  RGMII is 2.5V interface.

                       And there is some criteria TskewT,TskewR etc.

                       How much voltages should we check the skew?



  • Hi Kosaka-san,

    RGMII is dependent on the VDDIO level. The logic levels of this would be located in section 7.5 in the datasheet. Clock and MAC data should be under VDDIO domain. For skew, the times should be measured at 50% of VDDIO level.