Altera Quartus II Settings File Manuel d'utilisateur télécharger pdf (Page 37)

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

This setting can be used in projects targeting any Altera device family.

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

Default Value

Example

set_global_assignment -name allow_synch_ctrl_usage off

set_instance_assignment -name allow_synch_ctrl_usage off -to foo

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Altera Quartus II Settings File Manuel d'utilisateur Page 37