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TLV320AIC3204EVM-K: Can't show the sound waveform when setting AGC

Len Hsu2
Intellectual 2440 points
Part Number: TLV320AIC3204EVM-K

Hi team,

I have a customer buy a TLV320AIC3204EVM-K and have some questions about the Pure Path software.

They found out that when they are setting AGC they can't see the sound waveform.

And they checked Analog Settings → Audio Input, they found out that MIC IN3_R and IN3_L were set to disable. 

After they set as Enable, the waveform can show up.

But if they re-open Analog Settings → Audio Input the setting will get back to disable again.

Can you  fix this?

  • 0
    TI__Mastermind 29025 points

    Hi,

    This is because when you hit program the device for this feature, it will first reset all registers which means the analog input that you set earlier will be reset to default.

    So run the AGC settings first then configure your input.

    Just FYI, you can also use the Command-line Interface to record and then run the command buffer for your settings.

    Regards.