Cannot Edit ALTPLL Megafunction for Stratix V Devices - Cannot Edit ALTPLL Megafunction for Stratix V Devices Description You cannot edit the ALTPLL megafunction with the parameter editor. This issue affects variations for Stratix V devices. There is no design impact. Resolution To work around this issue, manually modify the ALTPLL variation to the desired parameters. The only parameter that generally requires modification is the phase shift, which is currently set to a quarter clock period. This issue will be fixed in a future version of the POS-PHY Level 4 MegaCore function. Custom Fields values: ['novalue'] Troubleshooting novalue True ['novalue'] ['FPGA Dev Tools Quartus II Software'] novalue 10.0 ['Stratix® V FPGAs'] ['novalue'] ['novalue'] ['novalue']