What I/O standard shall I use in the pin planner to use a differential pair signal in a FPGA bank connected to 3.3V to compile my project ?

I am connecting VCCIO of some FPGA bank to 3.3 V for interfacing FPGA with ADC and DAC, Can anyone tell me what I/O standard should I give in .QSF for Differential inputs and outputs in Cyclone V F...