Quartus

Input reference <name> is enabled, but not used


CAUSE: You enabled the VREF A or VREF B pin, but you did not set the Input Reference logic option to As VREFA or As VREFB for a node.
ACTION: Remove the VREF pin, or make sure the pin is used in the design.

See also:

Overview: Making Assignments
Specifying General Device Options

- PLDWorld -

 

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