clkMux u0 ( .inclk1x (<connected-to-inclk1x>), // altclkctrl_input.inclk1x .inclk0x (<connected-to-inclk0x>), // .inclk0x .clkselect (<connected-to-clkselect>), // .clkselect .outclk (<connected-to-outclk>) // altclkctrl_output.outclk );