Are there any problems when selecting External PLL mode on the Native PHY Megawizard for Arria V GX and Stratix V GX devices? - Are there any problems when selecting External PLL mode on the Native PHY Megawizard for Arria V GX and Stratix V GX devices? Description Yes, when selecting External PLL mode on the Native PHY Megawizard™ for Arria® V GX and Stratix® V GX devices the tx_pll_refclk port remains as a useable port in Quartus® II software versions 12.0 SP2 and earlier. Resolution In external PLL mode you should only use ext_pll_clk port and leave the tx_pll_refclk port unconnected. This issue will be fixed in a future version of the Quartus II Software. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['FPGA Dev Tools Quartus II Software'] novalue 12.0.2 ['Arria® V GX FPGA', 'Stratix® V GX FPGA'] ['novalue'] ['novalue'] ['novalue']