Altera® Quartus® Prime Standard Edition Settings File Reference Manual

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

1.10.96. ENABLE_BUS_HOLD_CIRCUITRY

Enables bus-hold circuitry during device operation. If this option is turned on, a pin will retain its last logic level when it is not driven, and will not go to a high impedance logic level. The 'Enable Bus-Hold Circuitry' option should not be used at the same time as the 'Weak Pull-Up Resistor' option. This option is ignored if it is applied to anything other than a pin.

Type

Boolean

Device Support

  • Arria 10
  • Arria GX
  • Arria II GX
  • Arria II GZ
  • Arria V
  • Arria V GZ
  • Cyclone
  • Cyclone 10 LP
  • Cyclone II
  • Cyclone III
  • Cyclone III LS
  • Cyclone IV E
  • Cyclone IV GX
  • Cyclone V
  • HardCopy II
  • HardCopy III
  • HardCopy IV
  • MAX 10
  • MAX II
  • MAX V
  • MAX7000B
  • Mercury
  • Stratix
  • Stratix GX
  • Stratix II
  • Stratix II GX
  • Stratix III
  • Stratix IV
  • Stratix V

Notes

This assignment supports Fitter wildcards.

This assignment is included in the Fitter report.

Syntax


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

Default Value

Off

Example


		set_instance_assignment -name ENABLE_BUS_HOLD_CIRCUITRY ON -to pin