Intel® Quartus® Prime Pro Edition User Guide: Timing Analyzer

ID 683243
Date 10/04/2021
Public

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2.5.1.4. Report Clocks and Clock Networks

The Timing Analyzer's Reports > Clocks > Report Clocks command reports all clock signals in the design. The equivalent scripting command is report_clocks.

Report Clocks generates the Clock Summary report that lists details about all of the signals with clock setting constraints in the design.

Figure 49. Clock Summary Report Shows Properties of Clock Signals in Design

Similarly, you can click the Reports > Clocks > Report Clock Network... command to generate a custom report that helps you identify and evaluate advanced clock structures, such as clock muxes, clock gates, and clock dividers.

Figure 50. Report Clock Network Dialog Box
Table 9.  Report Clock Network Dialog Box Settings
Option Description
Report target Specifies the collection of clocks and nodes that you want to analyze and report.
Expand clock path Displays all subordinate nodes in expanded view. The default display collapses trivial nodes in the report.
Include potential clock paths Includes nodes in the report that are not on a clock path, but are upstream of a register clock port.
Report panel name Specifies the name that appears in the report panel title bar.
File name Specifies the name of an optional output file to contain report data.
Tcl command Displays the Tcl syntax that corresponds with the GUI options you select. You can copy the command from the Console into a Tcl file.

This report shows the nodes on the clock network hierarchically, starting from the input clock ports, followed by any other nodes that transform or route the clocks to the clock loads. The Join Points indicate whether the clock network has convergence, such as with clock muxes. The Statistics Table provides more details about the signals that you select in the report, such as the relationships between the incoming and outgoing clocks of this node.

Right-click any of the nodes in the report to Report Paths from Node, Report Paths Thru Node, Report Paths To Node, or Focus On Node to rerun the report for the selected node.

Figure 51. Report Clock Network Report