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Default configuration for PCM5122 fixed processing flow program 5

Prakash HK
Prodigy 250 points
Other Parts Discussed in Thread: PCM5122, PUREPATHSTUDIO

Hi,

We are using PCM5122 DAC we are planning to implement a simple LPF with cutoff of 50Khz.

In the Fixed Audio Processing Flow (Program 5) what will be the default configuration for Biquad filters is it  LPF or HPF and what will be the default cutoff frequency.

I have placed a request for Pure Path studio software but have not received any reply can you please let me know what else I have to do to get access to purepath.

Regards

Prakash

  • 0
    TI__Mastermind 27920 points

    Hi Prakash,

    Submitting a request on the PUREPATHSTUDIO page found here, is all you need to do.

    When you start the part, there will not be any default filters enabled, they will all be pass through, you need to program the device with coefficients to have filters other than pass through. This can be done in PPS with the ROM process flow, and then can be exported by saving the file. This will export I2C writes for the part in a file.

    Justin

  • 0 in reply to Justin Bohr
    Prodigy 250 points
    Thank you so much Justin
  • 0 in reply to Prakash HK
    TI__Mastermind 27920 points
    Hi Prakash,

    Just another note, the DRC starts up in a harsh setting, and it is recommended that you apply your tuned settings before outputting audio. So I would not recommend outputting audio in the default state.

    Justin