Implementation of System Interconnection Devices Using PCI Express

PCI Express is considered as a good candidate for system interconnects due to its fast speed, low power consumption, and good protocol efficiency. In this paper we propose a system interconnection device based on PCI Express for usage in small-scale system interconnect and describe its design, implementation, and early evaluation. The proposed device provides multiple 20 Gbps connections and current testing results show that the throughput reaches maximally 6.797 Gbps without DMA.