Altera Stratix - Programmable Drive Strength Settings; I;O Banks in the Floorplan View

4–40 Altera Corporation
Stratix Device Handbook, Volume 2 June 2006
Quartus II Software Support
When you assign an I/O standard that requires a reference voltage to an
I/O pin, the Quartus II software automatically assigns V
REF
pins. See the
Quartus II Help for instructions on how to use an I/O standard for a pin.
Programmable Drive Strength Settings
To make programmable drive strength settings, perform the following
steps:
1. In the Tools menu, choose Assignment Organizer.
2. Choose the Edit specific entity & node settings for: setting, then
select the output or bidirectional pin to specify the current strength
for.
3. In the Assignment Categories dialog box, select Options for
Individual Nodes Only.
4. Select Click here to add a new assignment.
5. In the Assignment dialog box, set the Name field to Current
Strength and set the Setting field to the desired, allowable value.
6. Click Add.
7. Click Apply, then OK.
I/O Banks in the Floorplan View
You can view the arrangement of the device I/O banks in the Floorplan
View (View menu) as shown in Figure 4–24. You can assign multiple I/O
standards to the I/O pins in any given I/O bank as long as the V
CCIO
of
the standards is the same. Pins that belong to the same I/O bank must use
the same V
CCIO
signal.
Each device I/O pin belongs to a specific, numbered I/O bank. The
Quartus II software color codes the I/O bank to which each I/O pin and
V
CCIO
pin belong. Turn on the Show I/O Banks option to display the I/O
bank color and the bank numbers for each pin.