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Original question:

DP83867IR: IBIS model at RGMII

DP83867IR: DP83867 IBIS AMI for RGMII

Eddie Chou
Expert 6630 points

Part Number: DP83867IR

Hi Team, 

our customer download DP83867 IBIS model from below link, 

www.ti.com/.../snlm191

they are using RGMII mode customer would like to know how to select below for EGMII mode?

DP83867.png

Thanks & Regards

Eddie

  • 0
    TI__Guru**** 187951 points

    Eddie

    Even though the model name says GPIO_SGMII_IN, you can still use TX_D0 and TX_D1 model for RGMII as well.

    25 TX_D3 GPI 0.24533 2.68817nH 0.22504pF
    26 TX_D2 GPI 0.21872 2.37322nH 0.21900pF
    27 TX_D1 GPIO_SGMII_IN 0.19854 2.13682nH 0.19925pF
    28 TX_D0 GPIO_SGMII_IN 0.18382 1.96499nH 0.18073pF

    Thanks

    David

  • 0 in reply to David (ASIC) Liu
    TI__Expert 6630 points

    Hi David, 

    Can we provide example for RGMII model? customer follow our suggestion but still not able to get 125MHz signal. thanks.

    Thanks & Regards

    Eddie

  • 0 in reply to Eddie Chou
    TI__Mastermind 35975 points

    Hi Eddie,

    I ran a simulation on the RX_CLK of this model in a back-to back example. I see the signal coming out of the pin with no issues.

    This is my Keysight ADS schematic:

    Here are the results I got:

    Is your customer using keysight to simulate? If so, can they follow my schematic and see whether they get a signal?

    Best,

    Shane