Altera® Quartus® Prime Standard Edition Settings File Reference Manual

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

1.10.63. DDIO_OUTPUT_REGISTER

Directs the Compiler to perform special placement and routing of the specified register to provide a glitch-free output. This is used for registers involved in DDR memory interfaces. A setting of High designates the output register used when the output mux select is 1; a setting of Low designates the output register used when the output mux select is 0.

Type

Enumeration

Values

  • High
  • Low
  • Off

Device Support

  • Cyclone
  • Cyclone II

Notes

This assignment supports Fitter wildcards.

Syntax


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