22.7 Timer Preferences

Maximum List Size

Longest/Shortest Paths: Defines the maximum number of paths listed in the Expanded Paths window and the Paths tab.

Expanded Paths in List: Determines the number of paths that will be shown in the expanded window for two end points (terminals).

Minimum Delay / Maximum Delay

Enables you to filter paths for values above, between, or below the specified values.

Show

Defines which paths Timer displays (longest or shortest). Note that the paths Timer displays are related to Setup and Hold Check times. When Timer displays paths from longest to shortest, it reports setup times for registers. To view hold times in the Expanded Path window, you must set the Preferences to show the Shortest paths.

Sort By

Displays and sorts timing results according to Actual or Slack delays. Slack delay values are the difference between (user-specified) constraints and actual delays. If you select Sort By Slack and do not specify a constraint, Timer sorts by slack using the delay of critical path.

Case

Sets your operating condition preferences. View the operating conditions for each case in File -> Operating Conditions.

Path Selection

Select Critical Paths to display the longest path between any two end points (terminals). The Paths Between Any Pair option enables you to evaluate any path between any two end points. The Paths Between Any Pair option is disabled for families that use the pin-to-pin timing model.

Break Path at Register

Clear the check boxes in Break Path at Register to display paths that pass through (and do not "break") at all Clock, Clear, Gate, and Preset pins. Clear the CLR pin check box to get the clk-to-out delay.