Altera® Quartus® Prime Standard Edition Settings File Reference Manual

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

1.10.316. SLOW_SLEW_RATE

Implements slow 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 Slow 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 increases the delay for output or bidir pins, which can affect slack on Tco paths for the pins this is applied to.

Type

Boolean

Device Support

  • Cyclone
  • EPC1
  • EPC2
  • Enhanced Configuration Devices
  • A
  • B
  • E
  • FLEX8000
  • MAX II
  • MAX V
  • MAX3000A
  • MAX7000A
  • MAX7000AE
  • MAX7000B
  • MAX7000S
  • MAX9000
  • Mercury
  • Stratix
  • Stratix GX

Notes

This assignment supports Fitter wildcards.

This assignment is included in the Fitter report.

Syntax


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

Default Value

Off