| CAUSE: | The selected device family does not support the specified I/O standard for the specified pin. |
| ACTION: | Change the device wide I/O standard setting to either the LVTTL, LVCMOS, 3.3V, or 2.5V I/O standard. |
See also:
Assigning I/O Standards to Pins
Overview: Making Assignments
Specifying the Device Family & Device for Compilation
Specifying the I/O Standard for a Device
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