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Altera_Forum's avatar
Altera_Forum
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17 years ago

cyclone3 starter kit DDR pin assignment problem

hello everyone, when i assigned pins for my ddr design (cyclone 3 starter kit board) and did full compilation of the design the following error ocured. Error: Can't place pin ddr_dataio_...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

Apparently, you didn't import all Megawizard generated pin setting to your design. Particularly, I don't see any OUTPUT_ENABLE_GROUP entries. They are necessary to tell the fitter, that all DQS, DQ and DM pins are sharing one output enable group and none of these pins is receiving while another drives out.