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Altera_Forum
Honored Contributor
Honored Contributorpll_lock does not lock but the pll works
Hello, If i'm not wrong pll_lock works by positive logic, so i have this problem: My PLL Works but doesn't lock, anyone knows why? http://i46.tinypic.com/11lshsg.jpg As you can see CLO...
Altera_ForumHonored Contributor
Honored ContributorFirst point. I'm missing the term simulation in the question title. Failure in PLL simulation is definitely a different problem than "PLL not locking".
As said, the PLL model is simulating some locking delay (in a 10 µs range, if I remember right). Finally, PLL simulation doesn't work with default ns Modelsim timescale, it has to be changed to ps.
