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generating a DLL with Altera PLL

Altera_Forum
Honored Contributor II
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Is it possible to make a configurable DLL in Cyclone V? I assume altera_pll is an option for this. I am not sure that we can use an input clock for PLL which is not free running. My idea is for DDRx interfaces. I want to use a PLL to insert delay for input DQS.

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Altera_Forum
Honored Contributor II
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Altera parts have PLLs (rather than DLLs). However, yes. You can dynamically configure them. 

 

Have a look at: app note: an661 (http://www.altera.com/literature/an/an661.pdf) which discusses just this. 

 

Regards, 

Alex
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