ID:176264 Can't pack I/O cell <name> -- no fan-out from combinational output port

CAUSE: You turned on the Fast Input Register logic option for the specified I/O cell. The specified node can also be a PLL compensated pin in source synchronous mode. However, the I/O cell has no fan-out from its combinational output port. The Fitter cannot honor the assignment because there is no register to pack in the I/O cell.

ACTION: Remove the Fast Input Register logic option assignment or PLL source synchronous mode assignment on the I/O cell.