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高速接口技术目前采用较多的是PCI Express总线。文章基于工程实现需要,采用Xilinx的V5系列FPGA中的PCI Express IP核,完成了基于FPGA的PCI Express接口数据通路的硬件逻辑设计,编写了WDM框架的驱动程序,用于PCI Express接口的DMA数据传输控制。最后,为了测试PCI Express接口数据传输性能,搭建了图像采集系统X1链路下的实验平台,经过测试,传输速度在90～100MB/s。
High-speed interface technology is currently using more PCI Express bus. Based on the needs of engineering implementation, the hardware logic design of FPGA-based PCI Express interface data path is completed by using the PCI Express IP core of Xilinx V5 series FPGA. The driver of WDM frame is compiled and the DMA data for PCI Express interface Transmission control. Finally, in order to test the data transmission performance of the PCI Express interface, an experimental platform under the X1 link of the image acquisition system is set up. After testing, the transmission speed is between 90 and 100 MB / s.