Long-distance pcie extension system and data transmission method

Abstract

The invention discloses a long-distance PCIe extension system and a data transmission method of the long-distance PCIe extension system. The long-distance PCIe extension system comprises a host end interface device, an extension line and an equipment end interface device, wherein the host end interface device is in the disguise of PCIe equipment according to the configuration information, sent by the equipment end interface device, of the PCIe equipment; the equipment end interface device is in the disguise of a host according to received commands; and the extension line is a high-speed connecting line and is used for receiving and sending data between the host end interface device and the equipment end interface device according to a user-defined format. According to the long-distance PCIe extension system and the data sending method of the long-distance PCIe extension system provided by the invention, an embedded system is adopted; an FPGA (Field Programmable Gate Array) does not need to be adopted for carrying out conversion on a PCIe protocol; and the system and the method have the beneficial effects of simple and convenient design and low cost, and are suitable for long-distance transmission.

Description

technical field [0001] The invention relates to a PCIe extension system and a data sending method thereof, in particular to a long-distance PCIe extension system and a data sending method thereof. Background technique [0002] At present, many hosts use the PCIe bus to communicate with PCIe devices. Due to the weak anti-attenuation ability of the PCIe bus, it is only suitable for short-distance transmission. However, for some special fields, it is necessary to separate the host computer from the PCIe device for a long distance, so as to avoid exposing the host computer to harsh working environments or for confidentiality requirements. [0003] When the distance between the host and the PCIe device is long, a PCIe extension system is required to extend the PCIe bus. One way of the existing PCIe extension system is to use a short-distance PCIe extension cable, such as a PCIe extension cable extended through a USB3.0cable. But these PCIe extension cables still have the short...

AI Technical Summary

Problems solved by technology

But these PCIe extension cables still have the shortcoming that the distance is not long enough

Another way of the existing PCIe extension system is to perform protocol conversion through FPGA to achieve the purpose of PCIe device extension, but this method has disadvantages such as complex design and high cost

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