Quartus II Settings File Reference Manual - Altera

6–290 Chapter 6: Fitter Assignments
RESERVE_DATA31_THROUGH_DATA16_AFTER_CONFIGURATION
RESERVE_DATA31_THROUGH_DATA16_AFTER_CONFIGURATION
Type
Specifies how the Data[31..16] 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, or as outputs that drive an unspecified signal. If this pin is reserved as a
regular I/O pin, the Data[31..16] 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:
■ Stratix V
Syntax
set_global_assignment -name
RESERVE_DATA31_THROUGH_DATA16_AFTER_CONFIGURATION
Example
set_global_assignment -name
RESERVE_DATA31_THROUGH_DATA16_AFTER_CONFIGURATION "USE AS REGULAR IO"
Default Value
Use as regular IO
Quartus Settings File June 2012 Altera Corporation
Reference Manual