基于FPGA的SD卡高速数据存储系统设计与实现  

Implementation and design of SD card data storage system based on FPGA

作　　者：郭宇[1] 郑国辉[1] 

机构地区：[1]中国电子科技集团公司第三研究所,北京100015

出　　处：《电声技术》2017年第6期39-42,共4页Audio Engineering

摘　　要：FPGA以其丰富的IO资源和灵活的接口方式,被广泛应用于构建各种类型的数据采集系统。常见的数据采集系统,为了达到较高的数据存取速率,多采用并行FLASH芯片作为数据存储器。这样的设计虽然存取速度高,但是扩容和数据导出并不方便,而且整机成本较高。随着SD卡容量和存取速度的增加,价格的下降,利用SD卡作为数据存储器是一个更加灵活的方案。本文介绍了以FPGA为主控芯片的数据存储系统的设计与实现,采用该方案数据平均写入速率可以达到22MByte/s.FPGA is adopted as the controller of various data acquisition system because its flexibility and rich IO count. Mare data acquisition systems use parallel FLASH memory chips for high speed data transfer, but systems like tiffs usually have fixed capacity and cost much. Nowadays SD card supports higber data rate and costs less. Data acquisition svstem employing SD card as memory can be designed with fair data transfer rate. This article delails such design which can achieve data througbput of 22MByte/s.

关 键 词：FPGA 数据采集 SD卡 SDIO 

分 类 号：TN919.5[电子电信—通信与信息系统]