PCIE bus extension system and method

Abstract

The invention belongs to the technical field of data transmission, aims at solving the problem that PCIE interfaces are insufficient when multiple acceleration cards are used in the same computer, andprovides a PCIE bus extension system. The system comprises a CPU and a PCIE extension backboard in communication connection with the CPU. The PCIE expansion backboard comprises a micro-control unit,a dial switch and an exchange chip. The dial switch and the exchange chip are in signal connection with the micro-control unit; the micro-control unit can set the working mode of the switching chip based on the working state of the dial switch. The system has the beneficial effects that through the at least two PCIE switching chips arranged in the system, a plurality of PCIE X16 slots can be connected in an extended manner, two different connection relationships can be realized between the system and the CPU, and one or two groups of PCIE X16 signal connection between the system and the CPU isrealized; the system can be flexibly set according to application scenarios requiring higher data bandwidth or more PCIE bus interfaces, and two different topology schemes are realized by adopting one set of system.

Description

Technical field [0001] The invention belongs to the technical field of data transmission, and specifically relates to a PCIE bus expansion system and method. Background technique [0002] PCIE is a high-speed serial computer expansion bus standard designed to replace the old PCI, PCI-X and AGP bus standards. PCIE is a point-to-point full-duplex serial computer expansion bus, which is a personal computer graphics card, hard drive, SSD, Common motherboard interface for Wi-Fi and Ethernet hardware connection; PCIE has many improvements compared with the PCI standard, including higher system bus throughput, lower I / O pin count and smaller physical footprint, and more Good performance expansion of bus equipment, more detailed error detection and reporting mechanism and native hot swap function. [0003] The PCIE interface has X1, X2, X4, X8, X16, etc. according to the data bit width. The data bit width of the PCIE interface also determines the length of the PCIE SLOT. The higher the da...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problem of insufficient PCIE interfaces when multiple accelerator cards are used in the same computer, the invention provides a PCIE bus expansion system, including a PCIE expansion backplane and a PCIE connection adapter card , the PCIE expansion backplane is communicatively connected with the PCIE connection adapter card;

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