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help:DDR2 problem

Altera_Forum
Honored Contributor II
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Hi, I met a strange problem about DDR2 controller. I use the DDR2 SDRAM Controller v9.1. Sometimes the local_rdata has a value a cycle early before the local_rdata_valid is high and the following values are not what I have written into the ddr2 when local_rdata_valid is high. How can I solve this problem? Thank you very much.

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