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TAS5822M: Is this a typo in the datasheet?

Luke Sakamoto
Intellectual 1865 points
Part Number: TAS5822M

Hi MPA team,

 

My customer pointed out that the below description from the datasheet seems to be a typo. (repeating "Halt I2S clock.")

Can you confirm?

Thanks,

Luke

  • 0
    TI__Mastermind 18130 points

    Hi Luke

    thank you very much for your finding.

    no need to repeat halting i2s.

    it might be a composing problem.

    we will modify it in next update.

    tks

    jess

  • 0 in reply to Jesse Ji
    TI__Intellectual 1865 points

    Hi Jesse,

    Thanks for your comment. An additional question from the customer.

    Is it necessary to change MODE before stopping I2S in this process?
    　　- Is it possible to change the MODE even if it is still in PLAY?
    　　- Is there any specification of MODE (Device State) during the change?
    　　　　Shutdown Mode/ Deep Sleep Mode/ Sleep Mode/ Output Hiz Mode/ Play Mode

    Thanks,

    Luke

  • 0 in reply to Luke Sakamoto
    TI__Mastermind 18130 points

    Hi Luke

    the mode you mentioned here is changing the PWM phase?

    for halting i2s is necessary, so the mode can not be change before stopping i2s, during playing, sleep or any other mode.

    once halting i2s, device will go to hiz mode.

    but go to hiz mode use command without halting i2s will not work.

    tks

    jesse

  • 0 in reply to Jesse Ji
    TI__Intellectual 1865 points

    Hi Jesse,

    Question 1:

    >once halting i2s, device will go to hiz mode.
    　　　　Is this a protection function?
    　　　　If it was a protection function, the protection function would be activated at every startup. Is that a correct way to use it?

    Question 2:

    it fine to stop I2S during PLAY MODE (silence) and force it to shift to Hiz mode?

    Thanks,

    Luke

  • 0 in reply to Luke Sakamoto
    TI__Mastermind 18130 points

    Hi Luke

    Q1:

    "halting i2s, then go to hiz mode" is a kind of protection mechanism.

    except that, it can also be used to sync the internal clock.

    in this multi phase sync, halting i2s to make sure the internal clock sync so that output pwm can by sync as request.

    Q2:

    yes, it has no problem.

    tks

    jess