Is there an issue when simulating the Altera_PLL megafunction when entering phase shift in degrees? - Is there an issue when simulating the Altera_PLL megafunction when entering phase shift in degrees? Description Yes, there is an issue when simulating the Altera_PLL megafunction when entering phase shift in degrees using the simulation models that are generated in the Quartus® II software version 12.0. If you enter the phase shift in degrees, you will not see the correct phase shift in the ModelSim-Altera simuation result. Phase shift entry in degrees is first supported in the Altera_PLL megafunction in the Quartus II software version 12.0. Resolution In order to obtain the correct phase shift, you need to need to enter the phase shift a in time interval period. Or you could change the coding in the megawizard .v file as shown below: <instance name>.phase_shift0 = <time unit>, to <instance name>.phase_shift0 = <"time unit ps">, This issue will be fixed in a future version of the Quartus II software. Related Articles Why does the Altera_PLL ModelSim-Altera simulation results show an incorrect phase shift when changing the input clock frequency? Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Stratix® V E FPGA', 'Stratix® V GS FPGA', 'Stratix® V GT FPGA', 'Stratix® V GX FPGA'] ['novalue'] ['novalue'] ['novalue']