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TUSB8044A: Asking for the recommendation on hub USB serial number WHQL test

SHH
Mastermind 32206 points
Part Number: TUSB8044A

Hi Team,

Customer is using TUSB8044A.

 

Customer ran WHQL and found the fail as below link’s attachment.

https://txn.box.com/s/c52hyass34az1t6fbfptll0wofz3a6f9

 

Would you please recommend the proper solution for this?

 

 

 

BR,

SHH

  • 0
    TI__Guru 60870 points

    Hello SHH,

    This test passed during our WHQL test.

    Was a device added downstream to keep the hub out of suspend during this test?

    Did the customer set the customstrings bit in the I2C or SMBUS register?

    Regards,

    JMNN

  • 0 in reply to JMMN
    TI__Mastermind 32206 points

    HI JMNN,

    this is used for type c monitor device application.

    here is the customer's binary setting. would you please review the setting?

    https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/138/20190827-TUSB8044-USB2_5F00_12-BC_5F00_34-I2C100_5F00_0x413C.7z

    BR,

    SHH

  • 0 in reply to JMMN
    TI__Mastermind 32206 points

    HI JMNN,

    this is used for type c monitor device application.

    here is the customer's binary setting. would you please review the setting?

    https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/138/5773.20190827-TUSB8044-USB2_5F00_12-BC_5F00_34-I2C100_5F00_0x413C.7z

    BR,

    SHH

  • 0 in reply to SHH
    TI__Mastermind 32206 points

    Hi JMMN,

    confirmed the test, customer did not attached any device on the downstream port.

    would you please provide your comment on the customer's fail?

    Here is the captured from online. is this the same fail or not?

    BR,

    SHH

  • 0 in reply to SHH
    TI__Guru 60870 points

    Yes, the customer should try installing a downstream device to keep the hub out of suspend during the test.  The binary file showed that the default serial strings were enabled, so the hub should pass this test if it is awake.

    Regards,

    JMMN