Altera® Quartus® Prime Standard Edition Settings File Reference Manual

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

1.10.315. SLEW_RATE

Implements control of low-to-high/high-to-low transitions on output pins to help reduce switching noise. When a large number of output pins switch simultaneously, pins that use the lower Slew Rate option help reduce switching noise. This option is ignored if it is applied to anything other than an output or bidirectional pin, or a top-level design entity containing output or bidirectional pins. Note that using this option may increase the delay for output or bidir pins, which can affect slack on Tco paths for the pins this is applied to.

Type

Integer

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

INTEGER_RANGE

0, 3

Notes

This assignment supports Fitter wildcards.

This assignment is included in the Fitter report.

Syntax


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

Example


		set_instance_assignment -name SLEW_RATE 0 -to pin
	

See Also

IO_STANDARD CURRENT_STRENGTH_NEW OUTPUT_TERMINATION