Quartus® Prime Pro Edition Settings File Reference Manual

ID 683296
Date 7/08/2024
Public
Document Table of Contents

ALLOW_SYNCH_CTRL_USAGE

Allows the Compiler to utilize synchronous clear and/or synchronous load signals in normal mode logic cells. Turning on this option helps to reduce the total number of logic cells used in the design, but might negatively impact the fitting since synchronous control signals are shared by all the logic cells in a LAB.

Type

Boolean

Device Support

  • Intel Agilex® 5
  • Intel Agilex® 7
  • Arria® 10
  • Cyclone® 10 GX
  • Stratix® 10

Notes

This assignment is included in the Analysis & Synthesis report.

This assignment supports synthesis wildcards.

Syntax

set_global_assignment -name ALLOW_SYNCH_CTRL_USAGE <value>
set_global_assignment -name ALLOW_SYNCH_CTRL_USAGE -entity <entity name> <value>
set_instance_assignment -name ALLOW_SYNCH_CTRL_USAGE -to <to> -entity <entity name> <value>

Default Value

On

Example

set_global_assignment -name allow_synch_ctrl_usage off
set_instance_assignment -name allow_synch_ctrl_usage off -to foo

See Also

Force Use of Synchronous Clear Signals