Perform the following steps to manually assign signal groups to
nibbles:
- In the Signal Groups column, click menu selection button located to the extreme right.
- Select a Signal Group to assign.
After each assignment, Vivado® tool runs active DRCs, DRC violations appear in red, click more info link for details. The Vivado IDE shows signal groups for each IP instance in the design. So, you can plan I/O assignments for multiple IP instances at the same time.
Figure 1. Manually Assigning Signal Groups to Nibbles
