Clock source for Audio board

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lamikam

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I am working on a project to interface the Teensy audio adaptor board ( SGTL5000) to a different microcontroller. In this case, it is a STM32f429I-DISCO. I am using my mcu to generate the
master clock signal (MCLK). The output of the PWM from my MCU looks not that great (16 mhz).
NewFile2leor.png

Will the SGTL5000 accept such a noisy input clock source, or does it need some sort of conditioning to get a better square wave?
 
That should probably work.

Perhaps the signal is actually better, but you're getting ringing due to the ground lead on your scope's probe?
 
OK. THanks for the suggestion. I'm going to roll the dice and move on, and see if I can get the board to work.
 
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