User, All DDR implementations require customized hardware and software commissioning. You will need to adjust more than just the NM register field. Please refer to the KeyStone II DDR3 Interface Bring-Up Application Report (SPRACM0) available from the 66AK2G12 product page at the link below. There are other application reports and tools linked within this document that support this commissioning. Please provide a report showing that the length matching rules have been met in the layout and a version of the REG_CALC spreadsheet with the values from the SDRAM datasheet. Tom
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