3.1.29.16. get_clock_pair_info (::quartus::sta)

Intel® Quartus® Prime Pro Edition User Guide: Scripting

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ID 683432

Date 10/04/2021

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Visible to Intel only — GUID: reference_TCL_tcl_pkg_sta_ver_1_0_cmd_get_clock_pair_info

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3.1.29.16. get_clock_pair_info (::quartus::sta)

The following table displays information for the get_clock_pair_info Tcl command:

Tcl Package and Version	Belongs to ::quartus::sta
Syntax	`get_clock_pair_info [-h \| -help] [-long_help]` `[-fall_from` <clk_object> `]` `[-fall_to` <clk_object> `]` `[-false_path]` `[-from` <clk_object> `]` `[-hierarchy]` `[-hold]` `[-rise_from` <clk_object> `]` `[-rise_to` <clk_object> `]` `[-setup]` `[-to` <clk_object> `]`
Arguments	`-h \| -help`		Short help
	`-long_help`		Long help with examples and possible return values
	`-fall_from` <clk_object>		Valid source clocks (string patterns are matched using Tcl string matching)
	`-fall_to` <clk_object>		Valid destination clocks (string patterns are matched using Tcl string matching)
	`-false_path`		Return a description of the satisfied false-path-type assignment applied between the "from" and "to" clocks, if any
	`-from` <clk_object>		Valid source clocks (string patterns are matched using Tcl string matching)
	`-hierarchy`		Return a description the hierarchical relationship between the "from" and "to" clocks
	`-hold`		Return the hold analysis information if you use the "-false_path" option
	`-rise_from` <clk_object>		Valid source clocks (string patterns are matched using Tcl string matching)
	`-rise_to` <clk_object>		Valid destination clocks (string patterns are matched using Tcl string matching)
	`-setup`		Return the setup analysis information if you use the "-false_path" option. The setup analysis relationship is returned by default
	`-to` <clk_object>		Valid destination clocks (string patterns are matched using Tcl string matching)
Description	The get_clock_pair_info command returns various clock information between two given clocks. If you specify the "-false_path" option, the command returns a description of the satisfied false path assignment between the "from" and "to" clocks, which includes clock groups. If you specify the "-hierarchy" option, the command returns a description of the clock hierarchy relationship between the two clocks, such as whether the "from" clock is a parent of the "to" clock. Use the "-from" option to specify the source clock that you want to query, and use the "-to" option to specify the destination clock that you want to query. When using the "-false_path" option, you can use the "-rise_from" option to specify a source clock's rising edge to report on, or use the "-fall_from" option to specify a source clock's falling edge to report on. Likewise, you can use the "-rise_to" option to specify a destination clock's rising edge, or use the "-fall_to" option to specify a destination clock's falling edge. You can also specify to retrieve either the setup or hold false path relationship using the "-setup" or "-hold" option respectively. By default, the setup relationship is reported.
Example Usage	create_clock clkA -period 10 create_generated_clock clkB -source clkA -divide_by 2 create_generated_clock clkC -source clkB -divide_by 2 set_false_path -from clkA -to clkB -latency_insensitive set_clock_groups -group clkA -group clkC -asynchronous get_clock_pair_info -from clkA -to clkB -false_path -> "false_path_latency_insensitive" get_clock_pair_info -from clkA -to clkC -false_path -> "clock_group_asynchronous" get_clock_pair_info -from clkA -to clkB -hierarchy -> "parent_child" get_clock_pair_info -from clkC -to clkA -hierarchy -> "descendant_ancestor"
Return Value	Code Name	Code	String Return

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Intel® Quartus® Prime Pro Edition User Guide: Scripting

3.1.29.16. get_clock_pair_info (::quartus::sta)