基于PCIe总线的多路实时传输系统设计  

Design of multi-channel real-time transmission system based on PCIe bus

作　　者：高俊[1] 杨灿美[1] 杜学亮[2] 

机构地区：[1]中国科学技术大学信息科学技术学院,安徽合肥230026 [2]中国科学院自动化研究所,北京100190

出　　处：《电子技术应用》2015年第2期65-67,71,共4页Application of Electronic Technique

基　　金：中国科学院战略性先导科技专项(XDA06010402)

摘　　要：针对多路图像数据的传输及处理带宽需求,使用Virtex-6 FPGA设计实现了基于PCIe总线的多路实时传输系统。该系统主要包括仲裁控制多设备对DDR3的访问,采用PCIe Bus Master DMA方式实现与PC之间的高速传输,以及对全双工传输过程中存在的拥堵问题进行优化。实验结果表明,该实时传输系统最高的传输速率可以达到单工写1 632 MB/s,读1 557 MB/s,全双工写1 478 MB/s,读1 439 MB/s,并且性能稳定,完全满足多路图像采集后的高速传输处理需求。Acorrding to the requirements of transmission and processing bandwidth of multi-channel image data, a multi-chan- nel real-time transmission system based on PCIe bus which uses Virtex-6 FPGA is designed. The system includes a arbitration controling multiple devices to access DDR3, a high-speed transmission way to PC which uses PCIe Bus Master DMA mode. And the congestion problems exist in the full-duplex transmission are optimized. Experimental results show that the maximum transmission rate of this real-time transmission system can reach 1 632 MB/s of writing, 1 557 MB/s of reading in simplex mode and 1 478 MB/s of writing, 1 439 MB/s of reading in full duplex mode, which fully meets the needs of high-speed transmission and processing of multi-channel image data after acquisition with stable performance.

关 键 词：PCIE 实时传输 仲裁 DMA 

分 类 号：TN919.64[电子电信—通信与信息系统]