基于NAND Flash的存储设备设计与实现

摘要

Flash是目前最火的存储介质,具有传输速度快、功耗小、无噪音等优点.但用于存储设备时常因片上总线的局限而性能低下.针对因总线限制Flash性能发挥的问题,设计了一种基于AXI总线的NAND Flash存储设备,所设计的存储设备具有多通道传输、流水线操作、ECC校验,以及RAID5架构存储等功能.设计分析与测试结果表明,设计的基于NAND Flash存储系统传输速度更快,系统更稳定,同时增强了存储数据的可靠性为NAND Flash存储设备的研究提供了一个新的解决方案.%Flash is the most popular storage medium,which has the advantages of high transmission speed,low power consumption,no noise and so on.However,when it is used for storage device,the performance is often limited by the limitations of on-chip buses.Aiming at the problem of Flash performance restricted by bus,a NAND Flash storage device based on AXI bus is designed.The designed storage device has the functions of multi-channel transmission,pipeline operation,ECC check,RAID5 architecture storage and so on.Design analysis and test results show that the designed storage system has faster transmission speed and is more stable,and the data reliability is enhanced at the same time.This provides a new solution for the research of NAND Flash storage devices.