Error: Bidirectional I/O uses parallel termination, but does not have dynamic termination control connected - Error: Bidirectional I/O uses parallel termination, but does not have dynamic termination control connected Description When you use ALTDQ_DQS2 with ALTOCT for Stratix V in Quartus® II 12.0, you may get the following fitter errors: Error (174051): Bidirectional I/O "read_write_data_io [0]" uses parallel termination, but does not have dynamic termination control connected Resolution To workaround it, please make the following RTL changes: 1. Add fr_clock_in,oct_ena_in to the top level. Make sure they are connected from altdq_dqs2_stratixv.sv to the top level. 2. Make the width of oct_ena_in match in the IP file and top level file. Change its width if required. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Stratix® V FPGAs', 'Stratix® V GX FPGA'] ['novalue'] ['novalue'] ['novalue']