A design of PCI-bus high speed serial communication card

This paper proposes a design of PCI bus high speed LVDS communication card, which can be widely applied in high speed serial communication of PCI-based electrical systems. The LVDS standard is deployed as front-end communication interface to implement a 120 Mbps serial communication speed within 10 meter communication distance. To promote data transaction efficiency on the PCI bus, we propose a high efficiency DMA data transition method. In the proposed DMA method, to promote PCI bus communication efficiency, we adopt continuous burst to increase the bus efficiency. Furthermore, we adopt common buffer DMA to ensure data transaction continuity. A generic method on developing WDM driver for PCI devices is also presented at the end of the paper. Comprehensive measurement experiment reflects that the PCI hardware transaction speed in this design can reach more than 120 Mbytes/second, which is highly efficient and meaningful for high speed data communication or applications alike.