| 基于FPGA的高速DSP与液晶模块接口的实现 |
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| 引用本文： | 杨旭光,丁铁夫,刘维亚,郑喜凤.基于FPGA的高速DSP与液晶模块接口的实现[J].液晶与显示,2007,22(3):342-345. |
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| 作者姓名： | 杨旭光 丁铁夫 刘维亚 郑喜凤 |
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| 作者单位： | 1. 中国科学院长春光学精密机械与物理研究所,吉林长春,130033;中国科学院研究生院,北京,100039
2. 中国科学院长春光学精密机械与物理研究所,吉林长春,130033 |
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| 基金项目： | 中国科学院知识创新工程项目 |
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| 摘 要： | 介绍了一种基于TMS320VC5402 DSP＆FPGA在液晶模块中的设计。针对高速DSP与LCD读写数据过程中时序的不匹配,提出了一种基于FPGA的解决方法。给出了快速器件DSP和慢速器件液晶模块的接口方法,并做出了逻辑时序分析；介绍了TMS320VC5402 DSP与液晶模块通过FPGA接口的硬件和软件实例,并给出了部分程序代码。利用FPGA进行I/O口的扩展,克服了DSP I/O口功能弱的缺点,提高了DSP的控制能力,节省了DSP的I/O资源。实验表明,该系统具有可靠性高的优点。
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| 关 键 词： | 液晶显示模块 现场可编程逻辑阵列 高速 |
| 文章编号： | 1007-2780（2007）03-0342-04 |
| 收稿时间： | 2006-11-01 |
| 修稿时间： | 2006-11-012006-12-26 |
Implementation of Interface Between High-speed DSP and LCD Based on FPGA |
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| YANG Xu-guang,DING Tie-fu,LIU Wei-ya,ZHENG Xi-feng.Implementation of Interface Between High-speed DSP and LCD Based on FPGA[J].Chinese Journal of Liquid Crystals and Displays,2007,22(3):342-345. |
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| Authors: | YANG Xu-guang DING Tie-fu LIU Wei-ya ZHENG Xi-feng |
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| Affiliation: | 1. Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033,China; 2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | A kind of design based on TMS320VC5402 DSP&FPGA and LCD is introduced.In order to solve the mismatch between high-speed DSP and time schedule requirement of LCD,the author puts for- ward a method based on FPGA.It applies the method of interface between high-speed device DSP and slow-speed device LCD,gives logic timing analysis.Meanwhile,it produces the example that the TMS320VC5402 DSP integrated with LCD through using FPGA successfully by hardware and soft- ware.And it gives part of the program-code.By using FPGA to expand the I/O interface,the weak- ness of DSP I/O interface function is improved,the capacity of DSP control is enhanced and the re- source of I/O is saved.The experiments show that the system is reliable. |
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| Keywords: | TMS320VC5402 |
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