Arduino DUE ADC reference voltage.

i just bought arduino DUE when i measure analog pin to GND, it gives 0.95 V. what does it means? is it mean if i gives ac signal it will be offset-ed directly to 0.95 V?

when i measure analog pin to GND, it gives 0.95 V.

How do you measure? Using a multimeter? In this case you probably measure a floating pin so any voltage may be shown, it doesn't mean anything.

is it mean if i gives ac signal it will be offset-ed directly to 0.95 V?

No.