Forum Discussion
Altera_Forum
Honored Contributor
16 years agowhat about the 'locked' output of the pll?
Is your source clock connected to a dedicated pll input? Are you sure the pll is connected to the correct pins? Are you sure that the input frequency of the pll is the same one than your oscillator? Do you have any warnings from quartus when you compile your project? Can you try an empty project with just the pll?