| 基于ARM处理器S3C2440的VGA显示技术 |
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| 引用本文： | 方鹏,张红雨,赵明辉.基于ARM处理器S3C2440的VGA显示技术[J].电子设计工程,2011,19(11):174-176,180. |
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| 作者姓名： | 方鹏 张红雨 赵明辉 |
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| 作者单位： | 电子科技大学电子工程学院,四川成都,611731 |
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| 摘 要： | 基于VGA接口时序以,高性能视频D/A芯片ADV7120为核心,实现了基于嵌入式CPU S3C2440的VGA显示子系统。系统一方面利用S3C2440自带的LCD控制器产生符合VGA显示要求的时序逻辑,另一方面通过LCD数据线将数字RGB信号传递给具有8路通道的视频D/A芯片ADV7120,产生VGA显示需要的模拟色彩信号。通过TFTLCD扫描显示的时序与VGA扫描显示时序的匹配,驱动VGA显示屏。该系统能够达到正常显示色彩信息的要求,且价格低廉,适用于对显示效果要求不苛刻,但要求大尺寸显示屏且对价格敏感的嵌入式应用中。
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| 关 键 词： | VGA S3C2440 时序 视频D/A LCD控制器 ADV7120 |
Design of VGA display technology based on ARM CPU S3C2440 |
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| FANG Peng,ZHANG Hong-yu,ZHA Ming-hui.Design of VGA display technology based on ARM CPU S3C2440[J].Electronic Design Engineering,2011,19(11):174-176,180. |
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| Authors: | FANG Peng ZHANG Hong-yu ZHA Ming-hui |
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| Affiliation: | (School of Electronic Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China) |
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| Abstract: | This paper provides the resolution of large-screen image display based on high-performanced video D/A converter ADV7120 and embedded CPU S3C2440.While the LCD controler of S3C2440 generating the timing of VGA interface,the D/A video converter ADV7120 transforms digit color signal to anolog color signal to meet the VGA interface’s requirement.The exact match of the TFT LCD timing and VGA display timing make it a practical way to drive the VGA interface by LCD controller inside S3C2440.The system meets the basic requrement of color displaying and can be used in the condition of larg-screened and pric-sensitive embedded applications. |
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| Keywords: | VGA S3C2440 timing video D/A LCD controller ADV7120 |
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