同じバンクで LVCMOS33 出力と LVDS_25 入力を使用すると次のエラー メッセージが表示されます。
ERROR:Place:864 - Incompatible IOB's are locked to the same bank 13
Conflicting IO Standards are:
IO Standard 1: Name = LVDS_25, VREF = NR, VCCO = 2.50, TERM = NONE, DIR =
INPUT, DRIVE_STR = NR
List of locked IOB's:
clktestn
clktestp
IO Standard 2: Name = LVCMOS33, VREF = NR, VCCO = 3.30, TERM = NONE, DIR =
OUTPUT, DRIVE_STR = 12
List of locked IOB's:
dataout_test
These IO Standards are incompatible due to VCCO mismatch. This mismatch can
be caused by setting DIFF_TERM = TRUE for some IOs locked to the bank
Phase 2.7 Design Feasibility Check (Checksum:266480e0) REAL time: 40 secs
Total REAL time to Placer completion: 40 secs
Total CPU time to Placer completion: 39 secs
ERROR:Pack:1654 - The timing-driven placement phase encountered an error.