Hello

on 3256 datasheet in recommended operating condition section we have:

a) Supply Core voltage DVDD 1.08 1.2 1.32 V

b) Supply 1.2V analog voltage VDDA_PLL 1.08 1.2 1.32 V

c) Supply I/O voltage OVDD 3.0 3.3 3.6 V
 
My question is:

How many current need any voltage?
Thanks