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Thread: Teensy audio board clock lines

  1. #1

    Teensy audio board clock lines

    I am going to use the PLL on the the board by just providing a single 16MHz clock from my MCU to the MCLK line (pin 21). Can I just leave BCLK/LRCLK (pins 23,24) floating, or do they need to be grounded or something else?

    Thanks.
    Leor

  2. #2
    Senior Member PaulStoffregen's Avatar
    Join Date
    Nov 2012
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    21,085
    The SGTL5000 chip requires all 3 clock signals.

  3. #3
    Hi Paul. So I'm still trying to get the board to come alive. Just trying to send an I2C address writeI am assuming I2C commands to the board can work only with MCLK input?

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