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AFE4400: Reading register does not provide data on MISO pin on every instance

Gaurav Dubey34
Prodigy 155 points
Part Number: AFE4400

I have configured the AFE4400 and read register is enabled and now I am trying to read the register 0x01 in while (1) and I am getting I my previously written value as well but not on every instance.

zoomed out sequence

Zoomed in sequence when data present:

Zoomed out sequence when data is not present:

  • 0
    TI__Genius 12575 points
    Hi Gaurav,

    What is the SCLK's frequency in your setup?
    I am assuming you have built your own board with AFE4400, in that case is any SPI/Power/RESET/AFEPDN pins floating? You can do quick continuity check to verify all the connections to the AFE pins.
    This kind of behavior can occur if your pins are floating ( mostly due to soldering).

    Regards,
    Prabin.