DQ Group logic option

A logic option that specifies the group width for a DQS pin and the associated DQ pins. Setting this option allows the Fitter to view the pins as a DQS/DQ pin group. I/O pins of a DQ pin group must be placed in the DQ pin locations of a single DQS group. This option must be assigned to an I/O pad, input buffer, or output buffer or it is ignored.