List of Messages |
CAUSE: You turned on the open-drain option for the specified differential I/O pin. However, differential I/O pins must have the open-drain option turned off. You may have assigned the GTL or GTL+ I/O standard to the pin, which are open-drain I/O standards. As a result, the I/O pin has the open-drain option turned on by default. You may have later assigned a differential I/O standard to the same I/O pin.
ACTION: Assign only one I/O standard to the pin throughout the design.
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