ID:186068 Pin "<name>" with <name> I/O standard must be driven by external clock output pin of PLL

CAUSE: You assigned the specified I/O standard to the specified pin. However, to use the I/O standard, the pin must be driven by an external clock output pin of a PLL.

ACTION: Modify the design so that the pin is driven by an external clock output pin of a PLL, or change the I/O standard.