摘要
针对移动存储的大容量、高性能需求,采用国产自主USB2.0安全控制器芯片S261,研制了一款基于嵌入式多媒体卡大容量存储U盘.介绍了U盘的硬件架构和固件设计,重点研究了S261控制器的eMMC管理单元的固件设计.控制器和eMMC之间的数据传递采用Ping-Pong传输,采用两张eMMC以交叉存储的方式存储数据.实验结果表明,该U盘的读写速度较普通U盘有很大的提高.
In order to meet the requirement of high-capacity and high-speed mobile storage devices,a highcapacity storage U disk based on embedded multi-media card（eMMC）is studied in this paper,which adopts self-developed USB2.0security chip S261 as U disk master.This paper introduces the U disk hardware architecture and firmware design and focuses on studying eMMC＇s management unit of S261.The Ping-Pong transfer strategy is used between S261 and eMMC to improve reading and writing performance.The data is stored in eMMC by the cross-storage way.The experimentation results show that the reading and writing speed of the U disk has been greatly improved,meeting the design goal.
出处
《杭州电子科技大学学报（自然科学版）》
2016年第2期37-41,共5页
Journal of Hangzhou Dianzi University：Natural Sciences
关键词
嵌入式多媒体卡
大容量
高速
U盘
embedded multi-media card
high-capacity
high-speed
U disk
