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Original question:

AFE7950EVM: About HSDC Pro parameter change

AFE7950EVM: DAC link breaks when capturing ADC

Kazuto Odajima
Prodigy 235 points
Part Number: AFE7950EVM
Other Parts Discussed in Thread: AFE7950

To evaluate the AFE7950EVM, I set up to step 13 according to the document "AFE7950EVM TSW14J57pptx", but if I capture with the ADC while transmitting with the DAC, the DAC link is broken and the waveform is messed up.

I want to run ADC and DAC at the same time, what should I do?

The waveform of the DAC became clear when I executed the command "AFE.adcDacSync()", but when I captured it again with the ADC, it became messy.

  • 0
    TI__Mastermind 18071 points

    Hi Kazuto,

    This issue is expected and to solve this you should follow the Steps 6 and 7 in the AFE7950+TSW14J57 bringup guide. This consists of continuously capturing on the ADC side till the DAC output looks good, shown in step 6, then you switch ini files and and the issue no longer occurs. 

    Regards,

    David Chaparro