| List of Messages | |
CAUSE: You assigned the specified PLL enable pin to a location. The Fitter cannot place the pin because no legal location is available on the device. This error may occur for a number of reasons, including conflicting assignments, such as conflicting I/O standard assignments, or the number of pins in the design exceeding the number of differential I/O pins available in the device.
ACTION: Change or delete the assignment.
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