Quartus

Pin <name>, which feeds or is fed by the <type> port of ClockLock PLL <name>, is assigned an illegal I/O standard

CAUSE: You assigned an I/O standard to the specified pin, which feeds or is fed by the specified port of the specified ClockLock PLL, but the I/O standard is illegal for this pin.
ACTION: Assign a legal I/O standard to the pin.

See also:

Assigning I/O Standards to Pins
Assigning Pins
Changing Assignments
Overview: Making Assignments

- PLDWorld -

 
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