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DP83822EVM: USB-2-MDIO error message

PYTsai
Genius 12120 points

Part Number: DP83822EVM
Other Parts Discussed in Thread: USB-2-MDIO

Tool/software:

Hi 

We are using USB-2-MIDO and see below error message, do you know how to fix it ? thanks!

Customer's EVM connection as below, they are using MSP-EXP430F5529LP to connect to the EVM

  • 0
    TI__Guru**** 183501 points

    Hi,

    Have they flashed MSP430 on the EVM for MDIO compatibility? If not, please see the direct email I sent you on how to flash it and let me know if you have any other questions.

    Thanks

    David

  • 0 in reply to David (ASIC) Liu
    TI__Genius 12120 points

    Hi David 

    My customer is facing few problems below, can you help ? thanks !

     1. Which port should be used for USB 2 MDIO ?

          I've tried all of them, but shown device not connected.  

          

    1. Which guideline is correct ?

    In USB-2-MDIO user guide and help menu it said

    MDIO=P4.1

    MDC=P4.2

                     But in the power point "How to flash MP430 Launchpad for USB2MDIO compatibility ppt" which yuo send to me over email it said 

     MDIO=P4.2

    MDC=P4.1

     

     

  • 0 in reply to PYTsai
    TI__Guru**** 183501 points

    Hi,

    Typically the highest COM port, in this case, COM9, should be used and Baud Rate is 9600.

    P4.1 connects to MDC and P4.2 connects to MDIO.

    PHY ID needs to match with the DP83822 PHY ADD ID which typically is 00.

    Please try to read register address 0000, you should able to read the data back.

    Thanks

    David