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【应用笔记】Stratix II、Stratix II GX和Arria GX器件外部存储器接口设计指南(External Memory Interface Design Guidelines for Stratix II,Stratix II GX, and Arria GX Devices)
Stratix® II和Stratix II GX器件对DDR存储器(如DDR2/DDR SDRAM、QDRII+/QDRII SRAM和RLDRAM II接口)提供支持，而Arria GX器件支持DDR2和DDR SDRAM接口。
Stratix® II and Stratix II GX devices offer support for double data rate
(DDR) memories, such as DDR2/DDR SDRAM, QDRII+/QDRII SRAM,
and RLDRAM II interfaces, while Arria® GX devices support DDR2 and
DDR SDRAM interfaces. Applications with these memory interfaces
include PCs, embedded processing, image processing, storage,
communications, and networking.an449.pdf