| 嵌入式系统双口存储器应用研究 |
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| 引用本文： | 范庆辉,张蕾,阳富民.嵌入式系统双口存储器应用研究[J].计算机工程与设计,2008,29(12). |
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| 作者姓名： | 范庆辉 张蕾 阳富民 |
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| 作者单位： | 1. 河南科技大学,电子信息工程学院,河南,洛阳,471003
2. 华中科技大学,计算机学院,湖北,武汉,430074 |
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| 摘 要： | 在含多CPU的嵌入式系统中,CPU之间的通讯和数据传输是其重要的组成部分.以数字硬盘录像机(DVR)为硬件平台,在简要介绍DVR系统结构和硬件设计的基础上,通过提供双口存储器的驱动程序对基于双口存储器的数字信号处理器(DSP)与CPU之间通讯和数据传输进行了研究.通过共享双口存储器的存储单元,有效地实现了DVR系统中对DSP解码过程的控制和音视频数据的传输.
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| 关 键 词： | 嵌入式系统 数字视频录像机 双口存储器 驱动 数字信号处理器 |
Application research of dual-port ram based on embedded system |
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| FAN Qing-hui,ZHANG Lei,YANG Fu-min.Application research of dual-port ram based on embedded system[J].Computer Engineering and Design,2008,29(12). |
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| Authors: | FAN Qing-hui ZHANG Lei YANG Fu-min |
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| Affiliation: | FAN Qing-hui1,ZHANG Lei1,YANG Fu-min2(1.College of Electronic Information Engineering,Henan University of Science , Technology,Luoyang 471003,China,2.College of Computer,Huazhong University of Science , Technology,Wuhan 430074,China) |
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| Abstract: | Communication and data transmission are the important component of embedded multi-CPU systems.Firstly,the architecture of DVR and dual-port RAM's hardware design are introduced.Secondly,the realization about the communication between DSP and CPU by the dual-port is presented in detail.Though sharing memory,the efficiency and powerful functionality of communication and media data transmission are realized. |
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| Keywords: | embedded system digital video recorder dual-port RAM driver DSP |
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