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TAS5825M: How to drive TAS5825 with 192K sample rate?

Part Number: TAS5825M

Hi Expert,

I'm trying to drive TAS5825M with 192K sample rate. It seems that TAS5825 only work when sample rate <48KHz. How to config TAS5825 work at 192K?

I think that Housekeeping Mode may be a solution. We hope to know how to config housekeeping mode without PPC3?

Could you please share us some manual or register map?

Thank you 

Frank Sun

  • hello,

      you can use 192k process flow  and after finished all coefficient parameter setting, then convert it to *.h file. Then you can get all required config.

    Alix can share you more detailed guidance

    Regards

    Linda

  • Hi Frank,

    For 192K sampling rate, you can choose housekeeping mode in PPC3 based on your system design, eg. 2.0. or 1.0.

    • The easiest way to obtain these configuration is :
      • You can apply for the access to ppc3 and TAS5825 plug-in by registering MyTI with your company's email. After that, please provide your email/MyTI account to me and i will give you the access.
    • Not sure whether SRC (sampling rate converter), AGL and PVDD tracking/thermal foldback are needed for you. If yes, you have to obtain the GUI as you will not know provided registers mean for every paramters. For register maps, go to the product folder of TAS5825:http://www.ti.com/product/TAS5825M/technicaldocuments

    Without DSP features like AGL etc. complete scripts below are for your reference: (with PPC3, you can obtain them by yourself)

    w 98 00 00
    w 98 7f 00
    w 98 03 02
    w 98 01 11
    w 98 00 00
    w 98 00 00
    w 98 00 00
    w 98 00 00
    w 98 00 00

    w 98 7f 00
    w 98 7d 11
    w 98 7e ff
    w 98 00 01
    w 98 51 05
    w 98 00 02
    w 98 19 a0
    w 98 1d 01
    w 98 00 00
    w 98 7f 00
    w 98 46 01
    w 98 00 00
    w 98 02 00
    w 98 53 00
    w 98 54 00
    w 98 00 00
    w 98 7f 00
    w 98 03 02

    d 5

    #Register Tuning
    w 98 00 00
    w 98 7f 00
    w 98 30 00
    w 98 60 02
    w 98 62 09
    w 98 4c 30
    w 98 03 03
    w 98 00 00
    w 98 7f 00
    w 98 78 80

    Regards,

    Alix Wan.

  • Hi Alix,

    Thank you for support. I am trying to gererate the i2c config code with PPC3. There's only 48k input sample rate in the combo box. It confused me. Could you please share more config guide?

    Thank you again

    Frank Sun

  • Hi Frank,

    It supports 192K sampling rate. This GUI does not show the option is because Audio I/O is set as USB In. As you know, USB of PPCMB does not support 192KHz hence you cannot see that option.

    Please Go to "Audio In" and then choose "PSIA", then try again and you will find that option.

    Regards,

    Alix Wan.