Why can't I select the ALTPLL Megafunction when targetting Stratix V devices in the Quartus II software? - Why can't I select the ALTPLL Megafunction when targetting Stratix V devices in the Quartus II software? Description The ALTPLL megafunction is not compatible with the Stratix® V device family. You must use the Altera_PLL megafunction when targeting this device family in the Quartus® II software. 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']