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DP83TG720EVM-MC: Ping check with EVM

Atsushi Takahashi
Expert 1415 points
Part Number: DP83TG720EVM-MC


Tool/software:

Hi Team,

The customer will use DP83TG720EVM-MC to evaluate DP83TG720RWRHATQ1 system that they designed.

The evaluation is communications check by ping.

Is the attached configuration OK?

Please let me know if there are any parameters to set for DP83TG720RWRHATQ1 and DP83TG720EVM-MC.

Sorry to ask such a basic question.

Best Regards,

  • 0
    TI__Genius 14006 points

    Hi,

    Yes, the attached configuration is ok. For ping to work, you should check that link is up on the DP83TG720. You can check this with LED1 on the PHY EVM. If it is ON then link is up, if it is blinking, then there is activity. If the LED is OFF, then link is not up. If link is not up, then you should try changing Master/Slave configuration on J2.

    You should also check that link is up on the DP83867. You can check this in your PC settings to see if it detects the link up in the Ethernet port. The speed should be 1000 Mbps.

    Best regards,

    Melissa

  • 0 in reply to Melissa Chang
    Expert 1415 points

    Hi Melissa-san,.

    Sorry for the late reply.

    Thanks to you, my customer was able to link up.

    However, the Ping never passes.

    The customer's board is fixed as a slave.

    They confirm the successful link up by checking the LED lights.

    1) They issued the normal Ping command from their PC., is there a special command for Automotive use(1000BASE-T1)?

    2) Do you have any advise for pass the Ping?

    Best Regards,

  • 0 in reply to Atsushi Takahashi
    TI__Genius 14006 points

    Hi Atsushi,

    Thank you confirming the link up through LED. Can you also confirm that the link is up on the PC side and that it is at 1000 Mbps and not 100 Mbps?

    There is no special command for ping for Automotive use. I use the following ping command:

    ping <ip address>

    When it comes to passing ping, I normally check that my ip address is configured correctly for destination and host and the addresses are the exact same except for the fourth number. For example, if source is 192.168.1.X, then destination should be 192.168.1.Y.

    If they are still having trouble with ping, can they try the following:

    1. Ping from PC to CPU/721. Check whether 0x639, 0x63A, 0x63B, 0x63C, 0x63D, 0x63E are increasing on the DP83TG721MC-EVM. Note that these registers will self clear if read in order. 

    2. Ping from CPU/721 to PC.  Check whether 0x639, 0x63A, 0x63B, 0x63C, 0x63D, 0x63E are increasing on the DP83TG721MC-EVM. Note that these registers will self clear if read in order. Registers can be accessed using the USB2MDIO tool: https://www.ti.com/tool/USB-2-MDIO . These tests will tell us if EVM is receiving the packets. 

    Best regards,

    Melissa