摘要
介绍了基于USB2.0的高速视频采集系统的实现方法。通过介绍Philips视频解码芯片SAA7111以及USB通用接口芯片CY7C68013的性能特点,提出了基于USB2.0的视频采集系统硬件平台设计方案;讨论并给出了软件设计方法,诸如SAA7111初始化方案、如何使用状态机实现双帧轮换存储方式、各种时序控制、驱动程序设计以及应用程序设计等。对该采集系统测试分析,主频为27 MHz时,达到了158 Mbit/s的数据传输速率。
The implement methods of the high-speed video image capture system were mainly introduced. The characteristic of the popular video decoder SAA7111 of Philips and the universal serial bus interface chip CY7C68013 were discussed. A very simple hardware design plan with great efficiency was proposed. The software design methods such as initializeing SAA7111, how to realize the two buffer access control, drivers and applications designs were discussed. Some test data show a very good result. When clock frequency comes to 27 MHz, the data transfer rate is 158 Mbit/s.
出处
《微纳电子技术》
CAS
2007年第9期892-896,899,共6页
Micronanoelectronic Technology
基金
自然科学基金资助项目(60671046)
成都光电技术研究所所长基金资助项目(C06K010)
