针对存储系统中的指令误判和单片FLASH读写速率慢的问题,设计了一种基于FPGA的高可靠、高速数据记录器。该记录器采用4线指令组合校验机制,配合双计数器消抖的防指令误判技术,最大限度保证指令的可靠识别;采用批次检测的方法管理坏块,有效缩短校验时间,同时应用交替双平面交叉写入和流水线编程模式,FLASH写入速度达到29.92MB/s;应用双FIFO交叉缓存,握手读数的机制,有效保证读取速度。经实践验证,该记录器指令判断准确,读写速率快,具有一定的推广价值。

According to the problem of misjudgment instruction and slow writing and reading data rates of single-chip FLASH, a high speed and high reliability data recorder based on FPGA was designed. 4-wire combinational instructions verification mechanism, with the dithering elimination technology of double counter was adopted to prevent instruction misjudgment in this recorder; adopting the method of batch testing management invalid block which shortens the time of verification. In consequence the application of alternating bi-planar cross-write pages and pipeline technique, the FLASH achieve the writing speed of 29. 92 MB/s. Reading mechanism of shaking hands with double FIFO cross cache effective guarantee read speed. By the practical test, the recorder has accurate instruction judgment, great write-read speed, the practical application value is great.