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时间: 2019-12-24 20:50
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【应用手册】ExternalMemoryInterfacesinStratix&StratixGXDevicesStratix®andStratixGXdevicessupportabroadrangeofexternalmemoryinterfacessuchasdoubledatarate(DDR)SDRAM,RLDRAMII,quaddatarate(QDR)SRAM,QDRIISRAM,zerobusturnaround(ZBT)SRAM,andsingledatarate(SDR)SDRAM.Thededicatedphase-shiftcircuitryallowstheStratixandStratixGXdevicestointerfaceattwicethesystemclockspeedwithanexternalmemory(upto200MHz/400Mbps).3.ExternalMemoryInterfacesinStratix&StratixGXDevicesS52008-3.3IntroductionStratixandStratixGXdevicessupportabroadrangeofexternalmemoryinterfacessuchasdoubledatarate(DDR)SDRAM,RLDRAMII,quaddatarate(QDR)SRAM,QDRIISRAM,zerobusturnaround(ZBT)SRAM,andsingledatarate(SDR)SDRAM.Thededicatedphase-shiftcircuitryallowstheStratixandStratixGXdevicestointerfaceattwicethesystemclockspeedwithanexternalmemory(upto200MHz/400Mbps).……