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提出了一种用于航天器的高速大容量固态存储器数据管理方案。存储器基于NAND型FLASH芯片,采用并行扩展及流水线操作的技术。向存储区加载一簇有效数据后,系统立即向每簇的空余区加载该簇的使用状态信息,保持了多簇数据连续写操作的流水线顺序,从而保证了系统的平均输入高速率。根据簇使用状态信息在内存中建立的簇分配表,系统实现对存储区高速灵活的管理。编程和擦除过程中新出现的无效块,将通过硬件电路自动标记并旁路。
A high-speed and high-capacity solid state memory data management scheme for spacecraft is proposed. The memory is based on a NAND-type FLASH chip and adopts a technology of parallel expansion and pipeline operation. After loading a cluster of valid data into the storage area, the system immediately loads the spare state of each cluster with the usage state information of the cluster, preserves the pipeline order of multiple cluster data continuous write operations, thereby ensuring the average input high speed of the system. According to cluster status information used in the establishment of the cluster allocation table, the storage system to achieve high-speed flexible management. New and invalid blocks during programming and erasing will be automatically tagged and bypassed by hardware circuitry.