摘要
介绍了DSP(数字信号处理器)图像传输系统中USB接口扩展的软硬件设计,对USB物理层和链路层的数据传输管理通过USB2.0接口芯片CY7C68001完成,并由DSP芯片TMS320VC5502进行控制,通过编程完成USB设备枚举、数据读写和中断处理等过程。系统采用批量传输方式与PC机进行高速数据传输,在Windows系统下为用户进行图像传输建立友好的图形界面,对其他系统的接口扩展设计有一定的参考价值。
This paper presents a new software and hardware design for USB interface extending in the image transmission system. Data transmission of physical layer and data link layer is managed by the USB2.0 interface chip CY7C68001, which is controlled by TMS320VC5502 DSP chip. The software is designed to implement USB device enumeration, data read-write and interrupt processing. The bulk transfer mode is adopted, which makes the system communicate with PC at a high speed. A friendly graphical interface is provided for the users of the Windows system during image transmission. It is of good value to be referenced for other system interface extending to some extent.
出处
《电子工程师》
2008年第3期54-56,共3页
Electronic Engineer
基金
国家自然科学基金(60572106)
