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Altera_Forum's avatar
Altera_Forum
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16 years ago

DDR2 controller: error msg for bi-directional clock.

Hi, I'm getting the following error when trying to fit a full-rate DDR2 controller to my Stratix III device. "Error: Bidirectional pins mem_clk[0] and mem_clk_n[0] with pseudo-differentia...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Hi,

I'm still getting the same error message. I find that the ddr2 controller works as a half-rate but not as a full-rate. What would be different about the two with respect to pin assignments?

Are there any assignments that I should add to the assignment editor which are not needed for a half-rate?

Is there a tutorial for a full-rate controller? I was only able to find them for half-rate ones.

I'm using the Terasic DE3 board, is there an issue with using full-rate controllers on this board?

Thanks.