ERROR:Place:899 - The following IOBs use the Digitally Controlled Impedance feature (DCI) and have been locked (LOC constraint) to the I/O bank 33. This feature requires the VRN and VRP pins within the same I/O bank to be connected to reference resistors. The following VR pins are currently locked and cannot be used to supply the necessary reference.
IO Standard: Name = DIFF_SSTL15_T_DCI, VREF = NR, VCCO = 1.50, TERM = SPLIT, DIR = BIDIR, DRIVE_STR = NR
List of locked IOB's:
List of occupied VR Sites:
VR site IOB_X2Y55 is occupied by comp phy_init_done
この問題は、Address/Control または System Control グループにより VRN/VRP ピンがバンクで使用されると発生します。