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Altera_Forum
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16 years ago

DDR2 reading errors on last two words

Hi, I've some problems with my ddr2 design. I use Altera DDR2 high performance IP on pci express dev board (Stratix II GX). I build some logic around my memory controler in order to test...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

I have not use the ddr2 HP core, but i have used the ddr sdram controller. In that core ,the test_complete signal always goes high when reading is finished. It does not indicate the test is passed. pnf is short for pass no fail, 1 is passed and 0 is failed. I think it's the same for ddr2 HP controller.

If i'm correct, pnf should always be high before reading starts, I can't understand why yours is low. You may check your core for detail information.