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TAS2563YBGEVM-DC: TAS2563-Output waveform distortion

switch
Genius 3190 points
Part Number: TAS2563YBGEVM-DC
Other Parts Discussed in Thread: TAS2563

Hi，I encountered the following problems while debugging TAS2563 EVM ，Can you analyze it for me? 

1，Waveform when PPC3 sets the gain to 0DB 

2，Waveform when PPC3 sets the gain to 3DB 

3，Waveform when PPC3 sets the gain to 6DB 

  • 0
    TI__Guru** 102955 points

    Hi,

    I'd like to ask a couple questions to narrow down this behavior:

    • Are you using the default values of PPC3? If not, can you provide your ppc3 file?
    • Are you configuring the device from Tuning and Audio Processing panel? Or from Device Control panel? Basically I'd like to know if you're using SmartAmp mode or ROM mode.
    • The gain you mention is the slider from Tuning and Audio Processing panel?

    Best regards,
    -Ivan Salazar
    Applications Engineer - Low Power Audio & Actuators

  • 0 in reply to switch
    TI__Guru** 102955 points

    Hi,

    Can you provide the PPC3 file you're using for test? I'd like to double check the configuration.
    I'll repeat a similar test on my side to compare the results.

    Regarding BGA test, the device can send different data based on the configuration. If you're using End System Integration, there is a control to select the output data. If you're using PPC3 directly to configure the device (not End System Integration), then you can use Device Control panel to select the output data, this is under TDM Transmitter configuration.

    Best regards,
    -Ivan Salazar
    Applications Engineer - Low Power Audio & Actuators