基于PEX8311PCIE总线的高速图像采集系统设计

摘要

针对传统PCI总线带宽低,不能传输高速视频信号的缺陷,设计了使用芯片PEX8311为PCI Express桥接芯片,采集传输CamLink接口相机图像的硬件系统.对PEX8311芯片的特点及其工作模式,以及用状态机在FPGA中实现对PEX8311控制做了介绍.通过编写WDM驱动程序和上位机程序对系统的数据传输性能进行了测试.测试表明该系统满足高速图像传输的要求,并且性能稳定.%Aiming at the disadvantages of the low bandwidth of PCI bus and can't transfer high speed video signal, Camera Link digital camera acquisition system based on PCI Express bridge chipset PEX8311 is designed. Features and work mode of PEX8311 and how to control PEX8311 by using FPGA though state machine are introduced in details. The WDM mode driver program and application software are programmed in order to test the system performance of data transmission. It is shown by experiment results that this system can meet high speed image acquisition requirement and has stable performance.