possible to use AD5228 as stereo volume control?

Hi,

 

I am wondering if it is possible to use two AD5228 to perform as volume control for stereo signal? I am planning to use one up and one down button to achieve it.

 

I am thinking to connect PU of two digipot together (same to PD), so that i can use one button each to control up/down for both AD5228.

 

Is this workable? What is the logic output of PU and PD from AD5228?

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