Forum Discussion
Altera_Forum
Honored Contributor
8 years agoS10 clocks are constrained with the IP, so when you create a PLL or transceiver IP, it usually has an accompanying .sdc with it that constrains the clocks. You just want to make sure your .sdc is read in after this. If you go to Assignments -> Settings -> TimeQuest, push your .sdc to the bottom(or do it in Assignments -> Settings -> Files). After doing this, close TQ and re-open it(so it sees the changes) and see if that fixes it, before running a full compile.