You can enable Extend analysis in Report Design Analysis (Timing mode) to analyze not only the worst setup path, but also:
- The worst setup path to the startpoint cell (
PrePath) - The worst setup path from the endpoint cell (
PostPath)
Figure 1. Extended Path Characteristics of the Worst Setup Path
Note: The Extend Analysis for All Paths option is
currently available only for setup analysis.
To run this analysis:
- In the Vivado IDE, select the Extend analysis checkbox in the dialog box.
- In Tcl, use the following command:
report_design_analysis -extend
This option increases runtime because it performs multiple timing analyses to collect characteristics for each reported path. Use it when you need full context around the worst setup path.