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Reset at standby mode on TAS2521

Tao_2199
Genius 5770 points
Other Parts Discussed in Thread: TAS2521

Hello,

 

Regarding to reset at standby mode on TAS2521, I have some question.

 

(1) If a reset is needed, will each reset(hardware(RST) and software reset) be able to use for it?

(2) After software reset, will all registers be made a default value the same as hardware reset?

If there is some register that the value is not changed, what registers does it apply?

(For example, volume, gain, and power up/down etc. ?)

 

Regards,

Tao_2199

  • 0
    TI__Guru** 108685 points
    Hi Tao,

    Yes, the device is able to reset through both hardware and software reset when in standby mode.
    After software reset all the registers are set back to their default values, you need to write back again the registers for the application you're using.

    Best regards,
    -Ivan Salazar
    Texas Instruments
  • 0 in reply to Ivan Salazar
    Genius 5770 points

    Hello Ivan,

     

    Thank you for reply.

    I have informed your answer to my customer.

     

    Regarding to the wait time at standby mode on TAS2521, I have a question.

     

    After reset(H/W or S/W), is the wait time needed until next command register?

    (Return from standby mode: Reset -> (Need wait?) -> command register)

     

    Is wait (min 1msec) needed the same as power on sequence?

     

    Regards,

    Tao_2199

  • 0 in reply to Tao_2199
    TI__Guru** 108685 points
    Hi Tao,

    Yes, the wait time before register writes is required after reset no matter if it is power on sequence or just a reset. The wait time is 1msec.

    Best regards,
    -Ivan Salazar
    Texas Instruments