关键词: PCI6540, PCI/PCI-X交换电路, 平均丢包数

Abstract: To meet the demand of dynamic scalable application of PCI interface peripherals in IC test system, a PCI/PCI-X switching circuit system based on bridge chip PCI6540 is proposed, and a general extended platform board is designed according to the PCI bus specification. The design and working principle of each module in this system are introduced in detail and the test platform is built to test and verify the system card. The experiment proves that the system card can work normally and gradually increase the magnitude of ping package (up to 115200), the transmission time is less than 15 ms, and average packet loss is less than 20 after running at least 30 minutes. The feasibility and reliability of the design are verified and has been applied to the domestic chip test system.

Key words: PCI6540, PCI/PCI-Xswitchingcircuit, averagepacketloss