FPGA based protocol conversion device

A technology of protocol conversion and CAN controller, which is applied in the field of FPGA-based protocol conversion devices, can solve the problems of fixed number of CAN buses, long communication response time, complex peripheral circuits of converters, etc., and achieve simple circuit design and flexible networking mode , easy to expand the effect of the application

Active Publication Date: 2017-08-18
CHINA TECHENERGY +1
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Problems solved by technology

[0008] Purpose of the present invention is exactly at the situation of above-mentioned prior art, has proposed a kind of protocol conversion device based on FPGA, solves 1, the complicated problem of the converter peripheral circuit that realizes based on MCU (single-chip microcomputer) or processor technology; 2. existing The number of CAN buses in the converter is fixed, and it is not easy to expand; 3. The forwarding delay time between Ethernet switch network ports based on the storage and forwarding method is long, the response time of communication is long, and the time stability is not good

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Embodiment Construction

[0048] A kind of FPGA-based protocol conversion device of the present invention is further described below in conjunction with accompanying drawing: this embodiment is only used for illustrating the present invention and is not intended to limit the scope of the present invention, those skilled in the art are to the modification of various equivalent forms of the present invention All fall within the scope defined by the appended claims of this application.

[0049]FPGA (Field-Programmable Gate Array), that is, Field Programmable Gate Array, is a product of further development on the basis of programmable devices such as PAL, GAL, and CPLD. It emerged as a semi-custom circuit in the field of application-specific integrated circuits (ASIC), which not only solves the shortcomings of custom circuits, but also overcomes the shortcomings of the limited number of original programmable device gates. The circuit design completed in hardware description language (Verilog or VHDL) can b...

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Abstract

The invention provides an FPGA based protocol conversion device. The FPGA based protocol conversion device comprises an HUB module, a RMII module, an MPU-TO-IO module, an IO-TO-MPU module and a CRC module and is used for converting an Ethernet link layer protocol to a CAN2.0B protocol. The FPGA based protocol conversion device faces to applications of industrial communication with high reliability and realizes rapid and stable delivery of Ethernet information and a protocol conversion function.

Description

technical field [0001] The invention relates to the field of nuclear power plant FPGA simulation test, in particular to an FPGA-based protocol conversion device. This conversion device is oriented to the application of high-reliability industrial communication, and realizes the fast and stable transmission of Ethernet information and the function of protocol conversion. Background technique [0002] In industrial control occasions, in order to transmit data between different communication buses, communication bus conversion is required, and Ethernet conversion to CAN (Controller Area Network) 2.0B is one of the types, such as figure 1 shown. At present, when designing such communication switching devices, most of them are realized by single-chip microcomputer or microprocessor. For example, in the paper "Design and Implementation of an Ethernet-CAN Conversion Circuit", Guo Jianzhou and China Electronics Technology Group introduced the use of C8051F040 single-chip microcompu...

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Application Information

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IPC IPC(8): H04L29/06
CPCH04L69/08
Inventor 张晓冬王道斌马建新白涛江国进孙永滨
Owner CHINA TECHENERGY
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