基于ARM的嵌入式大容量存储设备的设计  

Design of Mass Storage Device in Embedded System Based on ARM

作　　者：安毅[1] 蔡伯根[1] 

机构地区：[1]北京交通大学电子信息工程学院,北京100044

出　　处：《微计算机信息》2008年第17期146-148,共3页Control & Automation

基　　金：铁道部科技研究开发计划项目(2006X011)

摘　　要：本论文采用USB技术,以SD卡作为存储介质,提出了在AT91SAM7S64处理器上开发USB大容量存储设备的解决方案;本系统基于处理器内嵌的USB设备端口,遵守大容量存储设备类规范,从功能上把系统的实现划分为物理层、设备枚举层、设备响应层和磁盘功能层四个层次,实现了嵌入式系统与PC的数据交换。By using USB technology and SD card as the data storage medium, a solution of USB mass storage device based on AT91SAM7S64 processor is proposed. Based on embedded USB device port and specification of mass storage device class, the implementation of device can be divided into four classes according to the function of mass storage device class, including physical layer, device enumeration layer, device response layer and disk function layer. Data exchange between embedded system and PC is realized via proposed device.

关 键 词：嵌入式系统 USB Mass—storage类 SD卡 

分 类 号：TP334[自动化与计算机技术—计算机系统结构]