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ADAU144x MP pin initialization glitch

Question asked by PeterTheRed on Nov 23, 2015
Latest reply on Nov 25, 2015 by mmmike

Greetings!

 

I've been observing the MP pins of the ADAU1445.  It seems that no matter what mode they're set to (in a program stored to EEPROM for self-boot), they always pull high for ~100ms when the device is powered on.  That's somewhat problematic in our application, which uses one or more of these pins for delayed logic functions that can't have a 'false positive' at turn-on.  A pull-down resistor is a band-aid option, but I wonder if there is any way to defeat this behavior in the first place?

 

Thanks,

Peter

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