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TAS2552: Does TAS2552 requires MCLK to work properly?

Part Number: TAS2552
Other Parts Discussed in Thread: TAS2505,

Hi,

 

I had a customer whom is planning to use TAS2552 in one of their application just like how TAS2505 is used in the reference design

http://www.ti.com/tool/BT-MSPAUDSINK-RD

 

Seem like TAS2505 is able to take BCLK only instead of MCLK, may I know if TAS2552 can do the same?

 

Thanks,

Christina

  • Hi Christina,

    Sorry for the delayed response.
    TAS2552 should be able to work with BCLK as input without MCLK. You can see in figure 27 form the data sheet that several different clock can be selected as source for the dividers.

    Best regards,
    -Ivan Salazar
    Audio Applications Engineer - Low Power Audio & Actuators
  • Ivan,

    Thanks so much for the confirmation!

    Regards,

    Christina

  • Hi Ivan,

    May I also confirm that TAS2505 does not requires MCLK to work as well?

    Also what is the recommended method to mute the output? Does pulling off SPKVDD  abruptly or pulling RST low induces a 'pop' sound at the output?

    Thanks,

    Christina

  • Christina,

    Yes TAS2505 can be implemented with BCLK as input clock the same way as TAS2552. You've also already mentioned the reference design using it this way.
    You should use the device registers to mute the output. You can mute the DAC, speaker driver and headphone driver separately.
    pulling off SPKVDD is not recommended and it could produce pop sound. Pulling external reset control could also produce pop sound.

    Best regards,
    -Ivan Salazar
    Audio Applications Engineer - Low Power Audio & Actuators