Quartus II Settings File Reference Manual - Altera

6–294 Chapter 6: Fitter Assignments
RESERVE_DATA7_THROUGH_DATA5_AFTER_CONFIGURATION
RESERVE_DATA7_THROUGH_DATA5_AFTER_CONFIGURATION
Type
Specifies how the Data[7..5] pins should be used when the device is operating in user
mode after configuration is complete. Depending on the current device and
configuration scheme, these pins can be reserved as regular I/O pins, as inputs that
are tri-stated, as outputs that drive ground, as outputs that drive an unspecified
signal. If the Data[7..5] pins are reserved as a regular I/O pins, the Data[7..5] pins can
be used as ordinary I/O pins after configuration.
Enumeration
Device Support
■ As input tri-stated
■ As output driving an unspecified signal
■ As output driving ground
■ Use as regular IO
This setting can be used in projects targeting the following device families:
■ Arria V
■ Cyclone V
Syntax
set_global_assignment -name
RESERVE_DATA7_THROUGH_DATA5_AFTER_CONFIGURATION
Example
set_global_assignment -name
RESERVE_DATA7_THROUGH_DATA5_AFTER_CONFIGURATION "USE AS REGULAR IO"
Default Value
Use as regular IO
Quartus Settings File June 2012 Altera Corporation
Reference Manual