The timing report enables you to quickly determine if any timing problems exist in your design. The timing report lists the following information about your design:
maximum delay from input I/O to output I/O
maximum delay from input I/O to internal registers
maximum delay from internal registers to output I/O
maximum delays for each clock network
maximum delays for interactions between clock networks
To generate a timing report:
From the Tools menu, choose Reports.
Select Timing from the Report Type drop-down list. This displays the Timing Report dialog box.
Specify the Slack Threshold. If you select “Slack” as the sort method, you can limit the number of delays displayed based upon a slack threshold. For example, if you only want to see delays that have a slack less than 5ns, enter 5 in the Slack Threshold box.
Setup-hold Timing Check. Selection of this box enables you to configure the timing report to calculate external setup and hold information for device inputs in addition to the standard information.
Expand Failed Paths. If a path does not meet your timing specifications, and you would like to see the incremental delay of each macro within that path, select the Expand Failed Paths box.
Options. Clicking Options brings up the Timing Preferences dialog box, where you can set additional display and report options.
Click OK. This displays a timing report based upon your timing and display preferences. The format and content of the report is determined by the family