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Sabre-SDB WM8962 GPIO5 default

Question asked by Andrew Dyer on Dec 9, 2014
Latest reply on Dec 30, 2014 by Artur Petukhov

In reviewing the schematics for the Sabre-SDB and datasheet for the WM8962 codec (rev. 4.2, top of page 151), it says

 

Note that it is important that the GPIO5 input is held in a defined logic state (logic ‘0’ or logic ‘1’) during
start-up; it must not be left floating.


On the Sabre-SDB this pin appears to be floating in the default configuration (no digital microphones installed).  Is this intentional?  If I was to add a resistor to set the state, which is the preferred setting?

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