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Altera_Forum
Honored Contributor
Honored Contributorpll simulation
Hello,
I have to use a pll in my design. so I've created a pll via megawizard with my needs. 100Mhz clock input and 5nsec shifted clock in the output. now, I want to simulate my design with modelsim. how can I do that? where should I place the PLL.vhd component, I put it inside top.vhd and i am getting errors "Unknown identifier" to all pll I/Os. can you assist?4 Replies
Altera_ForumHello,
Wrap it inside an entity that is then instantiated in your testbench. Keeps the same entity as top in Quartus. Don't know how correct it is - but it works for me :) M.- Altera_Forum
My design hierarchy is : TestBench -->top level-->Pll
did you do the same? - Altera_Forum
Yeah, pretty much. Modelsim needs an altera library to simulate their things tho, altera_mf if I remember correctly. When defining you pll in the megawizard you need to check off that one also.
- Altera_Forum
It works,
Thanks!!!:)
