Altera Quartus II Settings File - Manual (Page 712)

RESERVE_DATA0_AFTER_CONFIGURATION
Specifies how the Data[0] pin should be used when the device is operating in user mode after
configuration is complete. Depending on the current device and configuration scheme, the Data[0] pin
can be reserved as a regular I/O pin, as an input that is tri-stated, as an output that drives ground, as an
output that drives an unspecified signal, or compiler configured. If the Data[0] pin is reserved as a regular
I/O pin, the Data[0] pin can be used as an ordinary I/O pin after configuration. If the Data[0] pin is only
used to interface with external memory for configuration, the Data[0] pin should be reserved as compiler
configured.
Type
Enumeration
Values
• As input tri-stated
• As output driving an unspecified signal
• As output driving ground
• Compiler configured
• Use as regular IO
Device Support
This setting can be used in projects targeting any Altera device family.
Notes
None
Syntax
set_global_assignment -name RESERVE_DATA0_AFTER_CONFIGURATION
Default Value
As input tri-stated
Example
set_global_assignment -name RESERVE_DATA0_AFTER_CONFIGURATION "USE AS
REGULAR IO"
712 RESERVE_DATA0_AFTER_CONFIGURATION
MNL-Q21005
2015.05.04
Altera Corporation Quartus Settings File Reference Manual
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