摘要
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 data management scheme of solid sate recorder （SSR） is introduced to meet the requirements of spacecraft. The SSR is based on NAND FLASH memory, with bus-width expansion and pipeline technique. The message of each cluster is loaded in the spare area, following the target datum, to keep the pipeline sequence of multiple clusters＇ loading, which guarantees the average input speed of system. The cluster messages are organized to be a cluster allocation table in memory, which enable the system to manage the recorder flexibly in high speed. Additional invalid blocks increasing in programming and erasing process will be labeled and bypassed by the hardware circuit.
出处
《计算机工程》
CAS
CSCD
北大核心
2007年第12期73-75,共3页
Computer Engineering
关键词
固态存储器
闪存
数据管理
航天器
Solid state recorder
Flash memory
Data management
Spacecraft
