一种基于热插拔的SD卡在交换机上的设计与实现  

Design and Implementation of SD Card in Switch Based on the Hot-insertion and Removal

作　　者：范逵[1] 董会宁[1] 陈虎[1] 

机构地区：[1]重庆邮电大学光电工程学院,重庆400065

出　　处：《通信技术》2009年第7期222-225,共4页Communications Technology

基　　金：重庆市自然科学基金资助项目(CSTC2008BB4083)

摘　　要：针对交换机需对大量数据进行存储和程序升级的要求,文中给出一种运用于交换机上支持热插拔的SD卡设计方案,该方案选用高性能的MPC8314E处理器,采用SPI总线与SD卡通信。文中还介绍了SD卡以及各功能模块的原理设计,讨论了硬件连接和软件设计。Aiming at the requirement of switch for storing a large number of data and upgrading the procedure, a design scheme of SD card is proposed for supporting hot-insertion and removal in the switch. In this design,the MPC8314E processor is used and communicates with SD card on SPI bus. This paper describes in detail the SD card and schematic design of functional modules. And the hardware connection and software design of the SD card is also discussed.

关 键 词：SD存储卡 SPI总线 热插拔 交换机 

分 类 号：TP302.1[自动化与计算机技术—计算机系统结构]