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DP83822EVM: About TP_IDL compliance test with DP83822 EVM

Tao_2199
Genius 5660 points
Part Number: DP83822EVM

Hello,

 

Regarding to compliance test with DP83822 EVM, my customer is asking a question.

They are doing 10Base-Te TP_IDL compliance test on EVM, but some test is failed.

(Please refer below.)

 

 

･10 Base-Te, TP_IDL Template, with TPM (last bit CD0), Load: load3 (red part: Failed)

 

 

･10 Base-Te, TP_IDL Template, without TPM (last bit CD0), Load: load1 (red part: Failed)

I think that the failure cause will be jitter on signal.

 

 

 

They have referred test procedure and script on Application Report(SANLA266).

I attached compliance all test report.

 

 

(Question)

They are wondering why TP_IDL test is failed on EVM.

Is there other causes on test procedure or setup?

Could you please give any advice or comment?

 

Regards,

Tao 2199

 

 

  • 0
    Genius 5660 points
    Additional information.

    Before DP83822 EVM test, they have tired this test on their custom board and it was failed.
    And they think that there is not much difference in hardware (PCB pattern and pulse trans etc.)
    between EVM and their custom board.
    So, they think that the failure cause will be on test procedure or setup.
    They are doing this compliance test to their end user evaluation.
    They don’t have enough time for test.

    Regards,
    Tao 2199
  • 0 in reply to Tao_2199
    TI__Mastermind 26320 points
    Hi Tao-san,

    DP83822 EVM was tested at UNH ( Third party Compliance House) and passes the test. Suggest if you can try with Tektronix Scope.

    Regards,
    Geet
  • 0 in reply to Geet Modi
    TI__Mastermind 26320 points
    Hi,

    I am closing this thread. Incase you have further queries, please open new thread and provide reference to this thread.

    Regards,
    Geet