Timings Window
The Timings Window allows you to add timing constraints for signals in the Signals List. There are 4 categories of timing constraints you can specify: Clock Constraints, Pad to Setup Constraints, Clock to Pad Constraints, and Pad to Pad Constraints.
- Clock Constraints
Figure 3-12.
Clock Constraints
You can add or delete constraints by using the Add Timing and Delete Timing options from the popup menu. Only signals with CLOCK and DIFFCLOCK type are displayed in the Signal Name list.
Figure 3-13.
Add/Delete Constraints
- Pad to Setup Constraints
Figure 3-14.
Pad to Setup Constraints
Only signals with IN and INOUT type are displayed in the Signal Name list and only signals with CLOCK and DIFFCLOCK are displayed in the Clock Name list.
Figure 3-15.
Add Pad to Setup Constraint
- Clock to Pad Constraints
Figure 3-16.
Clock to Pad Constraints
Only signals with OUT and INOUT type are displayed in the Signal Name list and only signals with CLOCK and DIFFCLOCK are displayed in the Clock Name list.
Figure 3-17.
Add Clock to Pad Constraint
- Pad to Pad Constraints
Figure 3-18.
Pad to Pad Constraints
Only signals with IN and INOUT type are displayed in the Signal In list and only signals with OUT and INOUT are displayed in the Signal Out list.
