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DP83867E: Mirror mode configuration

user244678
Expert 1245 points
Part Number: DP83867E

Hi,

I am trying to design a board using the same ETHER-PHY (DP83867E) and RJ-45 connector used in TMDS273GPEVM, DP83867E with mirror mode enabled and SGMII disabled.

Q1.Is the starp configuration of LED_0 correct with Rhi=5.76k-ohm, Rlo=2.49k-ohm?

Q2.When using in mirror mode, is the connection between TD_P/M_A to TD_P/M_D and RJ-45 correct according to the diagram below?

Best Regards,

Hiroyuki Taguchi

  • +1
    TI__Genius 16746 points

    Hello Hiroyuki,

    Please find my responses below:

    user244678 said:

    DP83867E with mirror mode enabled and SGMII disabled.

    Q1.Is the starp configuration of LED_0 correct with Rhi=5.76k-ohm, Rlo=2.49k-ohm?

    Mirror Mode Enabled and SGMII Disabled would be Mode 3 for LED_0, your Rhi and Rlo values are correct. This should give you your intended function.

    user244678 said:
    Q2.When using in mirror mode, is the connection between TD_P/M_A to TD_P/M_D and RJ-45 correct according to the diagram below?

    I believe you have connected them correctly but please double check Section 8.4.6.5 Mirror Mode in the Datasheet. 

    Regards,

    Alvaro