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TAS3251: if all register in TAS5534 can be accessed by 8bits?

Andrew Liu1
Prodigy 230 points
Part Number: TAS3251
Other Parts Discussed in Thread: TAS5614, TAS5825M

Hello

  In our previous project, we use a 5.8G wireless module to transfer audio, and we use TAS3251 as audio amplifier, as below picture1

  but in the debugging, we found that the module: IA9QH5 SY5-A24 can't configure TAS3251 very well;

  it was said that some registers in TAS3251 just can be accessed by 32bits;  but the IIC of the module just can read/write 8 bits one time( accessed by 8 bitts); so the module can configure TAS3251 very well;

 now we plan to switch to use TAS5534+TAS5614; AS below picture2;

 question:  if all registers in TAS5534 can be accessed by 8 bits? 

                 if the module can configure TAS5534 very well?

thanks;

  

  • 0
    TI__Mastermind 19080 points

    Hi Andrew,

    Digital Audio Processing related registers are 32-bit width on TAS5534. For more details, refer to page 69 on datasheet. Do you need to do tuning jobs on the TAS device? Like Input Mixing, DRC... If not, there should be no need to visit the 32bit registers for both TAS3251 and TAS5534.

    Thanks!

    Regards,

    Sam

  • 0 in reply to Sam(MPAA) Zhang
    Prodigy 230 points

    Hello SAM:

             Thanks for your help;

             We also plan to use TAS5825M, could you do me one more favor to check if all registers in TAS5825M can be accessed by 8BITS?

    thanks;

  • 0 in reply to Andrew Liu1
    TI__Mastermind 19080 points

    Hi,

    These devices all have integrated DAP for tuning jobs. They all have 32-bit width registers related to the DAP domain. If you don't need to use the digital audio processing, you can use any of them. 

    As far as I know, all the devices with DAP has 32-bit width registers. This is because the coefficients of bi-quad in digital signal processing are high accuracy with decimal. 

    Do you need the DAP features? What about doing the tuning on the SoC side, and only use the TAS device as an audio amp(with out DAP). Then 8 bits I2C is good enough.

    Regards,

    Sam