Intel® Quartus® Prime Pro Edition Settings File Reference Manual

ID 683296
Date 12/12/2022
Public

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Document Table of Contents

FAST_OUTPUT_REGISTER

Implements an output register in a cell that has a fast, direct connection to an I/O pin. If such a fast, direct connection to the I/O pin is not available in the I/O cell hardware, this option instructs the Fitter to lock the output register in the LAB adjacent to the I/O cell it is feeding.Turning on the Fast Output Register option can help maximize I/O timing performance, for example, by permitting fast clock-to-output times. Turning this option off for a particular signal prevents the Fitter from implementing the signal automatically in an I/O cell or locking down the output register in the LAB adjacent to the I/O cell. This option is ignored if it is applied to anything other than a register or an output or bidirectional pin fed by a register.

Type

Boolean

Device Support

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

Notes

This assignment supports Fitter wildcards.

Syntax


set_instance_assignment -name FAST_OUTPUT_REGISTER -to <to> -entity <entity name> <value>