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DP83869HM: No Ping and No Data Communication But PHY is able to auto Negotiate

ravi ala
Prodigy 40 points
Part Number: DP83869HM
Other Parts Discussed in Thread: DP83869, MIO

Tool/software:

Iam interfacing DP83869 with Xilinx Zynq-7000 ps ethernet 0.

Ethernet and SMI (MDC/MDIO) are from the MIO bank of the Xilinx.

Autonegotiation works (link speed 1Gbps) but no ping response nor echo of sent packets (I'm also using the LwIP TCP echo server application).

I have confiugured 0x86H with multiple combination but i could not able to ping, any suggestion please if solved. 

  • 0
    TI__Mastermind 19621 points

    Hi Ravi,

    Could you provide a block diagram of your setup, including the link partner? I see you were adjusting the RGMIII CLK delay values in Reg 0x86, this is a good debug step. To be sure that the MAC connection is the issue, we can enable a near end loopback, where the Xilinx SoC will send packets and the DP83869 will return them back to the SoC. This would help confirm whether the RGMII connection between the SoC and our PHY is good. Section 7.3.4 of the data sheet has more information.

    Regards,

    Alvaro