基于USB3.0高速图像数据传输系统设计

Design of High Speed Image Data Transmission System Based on USB3.0

为了解决图像采集系统中实时数据的高速缓存与传输问题,提出了一种基于高数据带宽、大容量的DDR2 SDRAM存储器和支持突发传输的USB3.0数据传输接口的设计方案。在硬件设计中,采用CYUSB3014作为USB3.0的控制芯片实现FPGA与上位机之间高速图像数据传输,以及采用DDR2 SDRAM作为缓存器;在逻辑设计中采用手动DMA模式对数据流进行控制,避免数据的堵塞,提高了可靠性。经验证,该系统工作稳定,能有效解决海量图像数据的缓存与传输问题。

In order to solve the problem of cache and transmission of real-time data in the image acquisition system,a design scheme based on high data bandwidth,large capacity DDR2 SDRAM memory and USB3.0 data transmission interface supporting burst transmission was proposed.In the hardware design,CYUSB3014 was used as the control chip of USB3.0 to realize high speed image data transmission between FPGA and upper computer,and DDR2 SDRAM was used as buffer.In the logic design,the manual DMA mode was used to control the data flow,so as to avoid data blockage and improve reliability.It is verified that the system works stably and can effectively solve the problem of cache and transmission of massive image data.