Intel® Quartus® Prime Standard Edition User Guide: Third-party Synthesis

ID 683796
Date 9/24/2018
Public
Document Table of Contents

2.8.4.5. set_false_path

The false path constraint is specified in the Precision Synthesis software.

Using the set_false_path Constraint

set_false_path -to <to_node_list> -from <from_node_list> -reset_path

The node lists can be a list of clocks, ports, instances, and pins. Multiple elements in the list can be represented using wildcards such as * and ?.

In a place-and-route Tcl constraints file, this false path setting in the Precision Synthesis software is mapped to a set_false_path setting. The Intel® Quartus® Prime software supports setup, hold, rise, or fall options for this assignment.

The node lists for this assignment represents top-level ports and/or nets connected to instances (end points of timing assignments).

Any false path setting in the Precision Synthesis software can be mapped to a setting in the Intel® Quartus® Prime software with a through path specification.

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