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ADAU144x XTALI and XTALO Pins

Question asked by db10 on Jan 10, 2013
Latest reply on Jan 10, 2013 by BrettG

On the ADAU144x evaluation board, there are jumpers that allow very several different clock input choices for the XTALI pin.  The evaluation board essentially disconnects the XTALI pin allowing the selection of different clock sources, but in all cases, the capacitance and crystal network still are "hanging" off of the XTALO pin.

 

For a design that uses a local oscillator running at 24.576 MHz driving the XTALI  pin (not using a crystal) is there any recommended configuration for the XTALO pin? A 22pF capacitor to ground? Other?

 

Thanks

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