Description
Due to a bug in version 2.0 of the Power Delivery Network (PDN) Tool a VCCIO setting of 3.3V is not supported for Arria® V, Cyclone® V or Stratix® V devices.
Resolution
To work around this problem you can select a VCCIO setting of 3.0V. Selecting 3.0V for VCCIO instead of 3.3V will result in a marginally lower Ztarget which is beneficial for PDN design.