This paper based on the mechanism of DDR-SDRAM, gave a way to construct a DDR-SDRAM controller based on WISHBONE bus protocol, and also introduced a forecast method to improve DDR's performance.

SDRAM是当今一种流行的高速存储器。通过和普通sdram存储器对比，阐述了WISHBONE总线协议下ddr存储器控制器的设计方法和注意事项，并提出一种提高DDR工作效率的预测机制。

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