| 基于嵌入式系统的多媒体存储卡接口设计 |
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| 引用本文： | 高美珍. 基于嵌入式系统的多媒体存储卡接口设计[J]. 国外电子元器件, 2006, 0(11): 21-24,29 |
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| 作者姓名： | 高美珍 |
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| 作者单位： | 湖北师范学院,物理系,湖北,黄石,435002 |
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| 摘 要： | 嵌入式系统由于本身存储容量的限制,急需扩展外存,多媒体卡(MMC)就是解决外存扩展的一个很好的方案.多媒体卡在多媒体领域广泛用作外部存储介质,但是大多数微处理器(MCU)并没有专门的多媒体卡控制器,多媒体卡的串行外设模式给了不具有多媒体卡控制器而需要读写多媒体卡的微处理器另一种选择,串行外设接口协议是广泛支持的总线协议,它通过串行外设接口总线与多媒体卡相连.本文介绍了MMC卡的工作原理和多媒体卡的串行外设接口协议(SPI)模式,给出了微处理器与MMC卡的接口电路、程序流程图及部分程序代码.
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| 关 键 词： | 嵌入式系统 多媒体卡 串行外设接口协议 MMC接口 |
| 文章编号： | 1006-6977（2006）11-0021-04 |
| 收稿时间： | 2006-05-31 |
| 修稿时间： | 2006-05-31 |
Design of multimedia card interface based on embedded system |
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| GAO Mei-Zhen. Design of multimedia card interface based on embedded system[J]. International Electronic Elements, 2006, 0(11): 21-24,29 |
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| Authors: | GAO Mei-Zhen |
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| Affiliation: | Department of physics, Hubei Normal University, Huangshi 435002, China |
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| Abstract: | The embedded system is in dire need of expanding external memorizer due to its limited memory capacity, the multimedia card is the better one of the expanding memory. The multimedia card is widely used as external memory in multi-media application,but most MCUs have no specialized mul-timedia controllers,the MCU with no specialized a multimedia controller has anther choice by using the SPI mode of the muhimedia card, the SPI is a widely used bus protocol. It can be connected to the multimedia card with SPI bus. In this paper, the principle and the SPI mode of the multimedia card are introduced. The interface of the multimedia card and the microprocessor are given finally. |
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| Keywords: | embedded system multimedia card serial peripheral interface protocol the interface of the multimedia card |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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