Circuit for realizing PCIE bus switching and peripheral mounting

Abstract

The invention discloses a peripheral mounting circuit for realizing PCIE (Peripheral Component Interconnect Express) bus switching, which comprises a PCIE bus conversion circuit, a PCIE bus switchingcircuit, a PCIE bus switching circuit and a peripheral mounting circuit, wherein the PCIE bus conversion circuit is used for converting a PCIE bus into multiple paths of selectable PCIE buses; the PCIE bus signal enhancement circuit is used for enhancing the signal quality of the PCIE bus, wherein each interface on the PCIE bus conversion circuit is sequentially connected with each interface on the PCIE bus signal enhancement circuit, and the PCIE bus signal enhancement circuit is respectively connected with at least two peripherals. The PCIE bus peripheral mounting switching system has the advantages and beneficial effects that a single PCIE bus is converted into a one-out-of-multiple PCIE bus form, then the PCIE bus is connected with the peripheral through the PCIE signal enhancement module, point-to-point connection of the PCIE bus is carried out, and switching of PCIE bus peripheral mounting in different environments is realized. The method has the characteristics of high integration level, strong operability, stability, high efficiency and strong applicability.

Description

technical field [0001] The invention relates to the field of industrial control and the field of computers, in particular to a circuit for realizing PCIE bus switching and mounting of peripheral devices. Background technique [0002] PCIE bus is a high-speed serial computer expansion bus standard, which was proposed by Intel in 2001. It aims to replace the old PCI and PCI-X bus standards. It belongs to high-speed serial point-to-point dual-channel high-bandwidth transmission. Version 4.0, the transfer rate can reach 16GT / S. [0003] One of the main differences between the PCIE bus and the PCI bus is the bus topology. PCI uses a shared bus parallel architecture where the host and all devices share a common set of address data and control lines. In contrast, PCIE is based on a point-to-point topology, with individual serial links connecting each device to the host. [0004] PCIE has strict requirements for wiring, otherwise it is likely to cause communication problems. Whe...

AI Technical Summary

Problems solved by technology

[0005] The PCIE bus is a point-to-point bus structure, which cannot realize a point-to-many bus structure like the PCI bus

At present, to achieve PCIE device switching, in the industrial computer, the PCIE device is generally plugged and plugged in. It needs to open the chassis for operation, which is more complicated; in the embedded design, you can choose PCIE SWITCH to mount at the same time, and all devices need to be mounted Loaded in the system, for some processors with relatively low performance, it will take up a lot of resources and the design is too complicated, resulting in waste of resources

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