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(ADV7182A and ADV7482) Unused analog input

Hi 

I have a question about ADV7182A and ADV7482A.

At these thread, ADI answered to connect unused AIN to GND.

https://ez.analog.com/video/f/q-a/9918/adv7181d-unused-pins

https://ez.analog.com/video/f/q-a/12611/adv7180-unused-inputs-unused-xtal-pins

https://ez.analog.com/video/f/q-a/537995/adv7181d-unused-analog-inputs

I think we can connect unused analog connect to GND.

But at ADV7482 document, this is written.

My question are these.

1) What should we do when we don't use analog input at ADV7182A?
    Is floating or connect to GND both OK?

2) What should we do when we don't use analog input at ADV7482?
    Is floating or connect to GND both OK?

Best regards

Kawa