Import PLL Frequency Launches Incorrect Parameter Editor - Import PLL Frequency Launches Incorrect Parameter Editor Description If you click Import PLL Frequency , the ALTLVDS_TX parameter editor correctly starts, but you can incorrectly edit all parameters not just the Frequency /PLL Settings page parameters. This issue affects all configurations. There is no design impact. Resolution To work around this issue, when the ALTLVDS_TX parameter editor starts on the General parameters page, follow these steps: Click Next to go to the Frequency/PLL Settings page. Select desired input clock rate. Click Finish twice to skip the remaining pages and close the ALTLVDS_TX parameter editor. This issue will be fixed in a future version of the POS-PHY Level 4 MegaCore function. Custom Fields values: ['novalue'] Troubleshooting novalue True ['PLL'] ['FPGA Dev Tools Quartus II Software'] novalue 11.0 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']