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Thread: CS42448 boot issues

  1. #1

    CS42448 boot issues

    I'm working on a project with the CS42448 codec on a Teensy 4.0. As long as I flash the firmware after boot the audio system comes up but if I restart the board without being plugged into the computer the codec doesn't function until flashed again. Has anyone else run into this?

  2. #2
    Member
    Join Date
    Apr 2020
    Location
    Tucson
    Posts
    49
    You have to reset the codec and configure it after the teensy has been reset. Did you connect a pin on the teensy to control the codec reset?

  3. #3
    Ah, thanks. I have the CAT811 chip but it may not be wired properly. I'll hook that up to a free pin to have it boot after the teensy.

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