You open this page by clicking Unused Pins in the
Device and Pin Options dialog box in the
Device dialog box.
Allows you specify the reserve state of all the unused pins on
the device:
-
As input tri-stated
—The pins are reserved as tri-state input pins.
-
As output driving ground
—The pins are reserved as output pins and drive the ground
signal.
-
As output driving an unspecified signal—The pins are reserved
as output pins and drive any signal.
-
As input tri-stated with bus-hold circuitry
—The pins are reserved as tri-state input pins with bus-hold
circuitry.
-
As input tri-stated with weak pull-up
—The pins are reserved as tri-state input pins with weak
pull-up resistors.
This option is available for all Altera device families
supported by the Quartus® Prime Standard Edition software. You can also reserve pins
individually with the Pin Planner.