摘要
由于工艺制约,NAND Flash存储器会出现位差错现象,为此引入了RS码保证其数据完整性和正确性。在研究RS码基本原理基础上,给出了编码和译码的电路实现,其中采用并行结构实现钱式搜索电路、采用流水线架构实现译码。与传统方法相比,该实现缩短了计算周期,提高了最高工作频率。在Quartus平台下对RS编译码模块进行功能仿真,仿真结果表明,该纠错码能够满足NAND flash存储器纠错要求,是一种正确适用的纠错方案。
With the limit of technics, NAND Flash storage has bit error. RS (reed-Solomon) ensures the data reliability and correctness in the solid-state disk. After analyzing RS philosophy, the blue print of the encoder and decoder is proposed. The parallel structure is used in chien search circuit and the Pipelining structure is used in decoder. Compared with former implemention, the maximal frequency is enhanced. The function simulation results show that the encoder and decoder satisfies the correction requirement of NAND Flash storage.
出处
《计算机工程与设计》
CSCD
北大核心
2013年第7期2590-2594,共5页
Computer Engineering and Design
关键词
存储器
编码
译码
并行结构
流水线架构案
功能仿真
storage
encoder
decoder
parallel structure
pipelining strueture
function simulation