15.15.5.3 Select All Technologies That the Bank Should Support

Selecting an I/O standard selects all compatible standards and grays out incompatible ones. For example, selecting LVTTL also selects PCI, PCIX, and LVPECL, since they all have the same VCCI. Further, selecting GTLP (3.3V) disables SSTL3 as an option because the VREFs of the two are not the same.