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AM2732: TIDA-020047 PHY connect issue

user5883945
Expert 1636 points
Part Number: AM2732
Other Parts Discussed in Thread: TIDA-020047, AWR2243, AWR2944EVM, AWR2944, , DP83TC812R-Q1

Tool/software:

Dears，

  The customer made a circuit board based on TIDA-020047, but during testing, it was found that PHY could not communicate. Therefore, all hardware and software resources were sourced from the reference design without any changes;
Detailed problem description can be found in the attached Word document

mmwave.docx

  • 0
    TI__Mastermind 21595 points

    Hi,

    I see you are referring to AWR2944EVM in the attached doc, what is the relation of AWR2944 with this TI design? This design only has AWR2243 and AM27x.

    Regards,

    Ajay

  • 0 in reply to Ajay Narayan
    Expert 1636 points

    Hi，

    Because the AWR2944EVM SDK includes the PHY driver, TIDA-020047 does not have an SDK and can only use other EVM drivers

      

  • 0 in reply to user5883945
    TI__Mastermind 21595 points

    Hi,

    Can you try and run a PHY loopback example and let me know if that is working?

    Regards,

    Ajay

  • 0 in reply to Ajay Narayan
    Expert 1636 points

    Hi

    The customer attempted to connect to the router. The AM2732 PHY pin only has TX clock and RX lock signals running normally, while the other pins have no signals. So it is not possible to conduct a loopback experiment. Testing the other pins of the PHY as standard I/O allows for normal input and output.

    The customer's question is whether there is a driver corresponding to AM2732 DP83TC812R-Q1;

  • 0 in reply to user5883945
    TI__Mastermind 49325 points

    Hi

    Since the AM273x EVM uses the DP83867ERGZR as the Enet Phy, so the AM273x MCU plus SDK will only support the DP83867ERGZR driver. That is why the Enet loopback example will not work for DP83TC812R-Q1. Can you try the Enet loopback without change on the AM273x EVM?

    Best regards,

    Ming 

  • 0 in reply to Ming Wei
    Expert 1636 points

    Hi，

      The customer is using Github DP83TC812R RTOS driver for data feedback. The MDC MDIO waveform on the PHY side is shown below, and it is uncertain whether there is feedback from the PHY.

  • 0 in reply to user5883945
    TI__Mastermind 21595 points

    Hi,

    Can you create another ticket for HW Apps team for reviewing the waveform and to confirm there is no HW issues.

    Regards,

    Ajay

  • 0 in reply to Ajay Narayan
    Expert 1636 points

    Hi

    1. The customer has adopted the DP83TC812 RTOS driver on Github. The loopback experiment is not feasible. The following image shows the log information.


    2. When using MDC MDIO to read registers, only address 00001 can be read, and the returned data is 1000000000011, unable to read other addresses; The code used to read other registers is shown in the following figure. How can I read other addresses