Description
In Stratix® V, Arria® V, and Cyclone® V devices, the differential input buffer is powered by VCCPD which must be 2.5-V to support differential inputs. You can choose the VCCIO power supply of the I/O banks as follows - 1.2, 1.25, 1.35, 1.5, or 1.8-V, and set VCCPD power supply of the I/O bank to 2.5-V. The differential input I/O standard is not supported when VCCIO is 3.0-V.
Resolution