Altera® Quartus® Prime Standard Edition Settings File Reference Manual

ID 683084
Date 5/08/2017
Public
Document Table of Contents

1.10.224. OPTIMIZE_FOR_METASTABILITY

This setting improves the reliability of the design by increasing its Mean Time Between Failures (MTBF). When this setting is enabled, the Fitter will aim to increase the output setup slacks of synchronizer registers in the design, which can exponentially increase the design MTBF. This option takes effect only if TimeQuest is being used for timing-driven compilation. Use the TimeQuest report_metastability command to review the synchronizers detected in your design and to produce MTBF estimates.

Type

Enumeration

Values

  • Off
  • On

Device Support

  • Arria 10
  • Arria II GX
  • Arria II GZ
  • Arria V
  • Arria V GZ
  • Cyclone 10 LP
  • Cyclone III
  • Cyclone III LS
  • Cyclone IV E
  • Cyclone IV GX
  • Cyclone V
  • HardCopy III
  • HardCopy IV
  • MAX 10
  • Stratix III
  • Stratix IV
  • Stratix V

Notes

This assignment is included in the Fitter report.

Syntax


		set_global_assignment -name OPTIMIZE_FOR_METASTABILITY <value>
	

Default Value

On