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TAS5731M: TAS5731M about pop sound issue

Mickey Zhang
Genius 12080 points
Part Number: TAS5731M

Hi Team,

The customer is using TAS5731M. The attach is the customer's schematic.

The register configuration is as follows：0x05 = 0x84, 0x1B = 0xC0

When the TAS5731M device is power on, the pop sound occurs. After power on reset, the customer initializes the register.

When the customer sets register 0x1B = 0xC0, the pop sound occurs again.

Can you provide the solution?

SHS200%e7%ba%bf%e8%b7%af%e5%9b%be.pdf

Best Wishes,
Mickey Zhang
Asia Customer Support Center
Texas Instruments

  • 0
    TI__Mastermind 25855 points
    Hi Mickey,

    Register 0x1B only has only one write enabled bit (please see section 9.6.14 in the datasheet for more info). Do you know why the customer is writing C0? D7 is reserved and D6 is read only in that register.

    Is the customer following the steps on pages 62 to 64 of the datasheet for initializing the device and recommended startup? Also are they using the Start/Stop Period Register (0x1A) to minimize pop during soft-stop and soft-start?

    Regards,

    Alex
  • 0 in reply to Alex Bhandari-Young
    TI__Genius 12080 points
    Hi Alex,

    Thank you for your reply. I will confirm with the customer.