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Altera_Forum
Honored Contributor
Honored ContributorArria 2 DDR3 shared PLL
Hi, I have two DDR3 instantiations in my design. I'm low on PLL resources and I need to share the PLL of the two DDR3 inst. In the documentation I saw that the ALTMEMPHY does not support u...
Altera_ForumHonored Contributor
Honored ContributorJust to clarify, for the LVDS receive data you're also getting a clock, so that clock would need to drive the PLL. I'm not sure. The PLL operation is pretty independent of the input clock's I/O standard, i.e. if you drove it with LVDS and all the frequencies necessary for DDR3 are available, it should work.
How many PLLs in the device you're using? I take it two are used for altmemphy, but wondering what others are used for(if they exist).
