FlexRay-CPCIe communication module based on single chip microcomputer and FPGA

Abstract

The invention discloses a FlexRay CPCIe communication module based on a single-chip microcomputer and an FPGA, a FlexRay communication unit comprises a single-chip microcomputer and a bus transceiver,the bus transceiver is controlled by a single-chip microcomputer minimum system to realize FlexRay bus data transceiving, and a FlexRay communication protocol is executed by the single-chip microcomputer; an FPGA minimum system is a control core of a CPCIe communication unit, clock management and logic control of a communication module are achieved by designing an IP core and an integrated hard core in an FPGA chip, a PCIe bus standard is executed, and data exchange between a computer and the communication module is achieved. Data exchange between the FlexRay communication unit and the CPCIecommunication unit is achieved through a local bus between the single-chip microcomputer and the FPGA. The invention can be directly installed on a computer backboard with a CPCIe interface; and dataexchange between two communication protocols of the PCIe system bus and the FlexRay high-speed external bus is realized.

Description

technical field [0001] The invention belongs to the technical field of network communication, and relates to a FlexRay-CPCIe communication module based on a single-chip microcomputer and FPGA, which is used to realize data communication between a computer and a FlexRay high-speed external bus through a PCIe system bus. Background technique [0002] Bus communication is widely used in various industrial control networks, mainly to solve communication problems between different electronic devices, especially in aerospace, automobile manufacturing, navigation, automatic control, process industry and other fields. At present, the external bus communication technology with long application time and mature technology includes CAN bus, 1553B bus, etc., which have the characteristics of high reliability, high certainty and high fault tolerance. However, with the continuous development of science and technology, the increasing data volume and higher and higher real-time communication...

AI Technical Summary

Problems solved by technology

[0005] However, the PCIe system bus and the FlexRay high-speed external bus are incompatible with each other, which restricts the role of the computer in the FlexRay bus communication network and also limits the application range of the FlexRay high-speed bus

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