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Altera_Forum's avatar
Altera_Forum
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15 years ago

DDR PIN placement error

Hi all, I use a Cyclone IV E EP4CE40F23C8 with Quartus 11.0 I have this error message when i try to place ddr pins --- Quote Start --- Error: altmemphy pin placement was...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

--- Quote Start ---

Yes but even when i choose only placement for "mem_clk" in DIFFIO_p T8 and

"mem_clk_n" in DIFFIO_n T9 (quartus default placement for DQ, DQS, DM...)

i have the same result

when i chek pin planner:

mem_clk : Y6

mem_clk_n : T10

--- Quote End ---

It sounds like you did not change the assignments.

When you are in Pin Planner, double-click on the cell that says PIN_Y6, and edit it to change it to PIN_T8. Then change PIN_T10 to PIN_T9. Click save, and place-and-route your design.

Cheers,

Dave