Design of ethernet back-to-back circuit board based on functional safety

Xianzho Xia; Xu Liu; Hongpeng Li; Xiyang Wang

doi:10.1117/12.2623873

6 February 2022 Design of ethernet back-to-back circuit board based on functional safety

Xianzho Xia, Xu Liu, Hongpeng Li, Xiyang Wang

Proceedings Volume 12081, Sixth International Conference on Electromechanical Control Technology and Transportation (ICECTT 2021); 120811A (2022) https://doi.org/10.1117/12.2623873
Event: Sixth International Conference on Electromechanical Control Technology and Transportation (ICECTT 2021), 2021, Chongqing, China

Abstract

With the development of electronic vehicle, more and more electronic control units are applied to the automobile. These technologies make the electronic control system more and more complex while ensuring the power, comfort and safety of the automobile. The internal network structure of the vehicle is becoming more and more complex, and the requirements of the vehicle bus are becoming higher and higher. On the basis of fully investigating and studying the theoretical basis of automobile Ethernet and the development situation at home and abroad, taking the current market demand of vehicle industry as the background, compared with the current vehicle network technology advantages and shortcomings, on the basis of fully investigating and studying the theoretical basis of vehicle Ethernet and the development situation at home and abroad, based on the current market demand of vehicle industry, compared with the advantages and disadvantages of current vehicle network technology, a method for verifying vehicle Ethernet Connectivity and real transmission rate of the circuit board, Combining the hardware design of Ethernet is proposed, it explains how to perform safety level decomposition, device selection, and calculation of hardware functional safety related parameters based on ISO 26262 after obtaining the corresponding safety goals. A circuit board is designed to verify the actual connectivity performance and true transmission rate of in-vehicle Ethernet. This scheme is based on the TJA1100 transceiver chip of NXP's Company, and makes use of its advantages of working in Reserves MII mode to design the hardware of BACK-TO-BACK circuit board, with emphasis on building the hardware environment around the TJA1100.

Citation Download Citation

Xianzho Xia, Xu Liu, Hongpeng Li, and Xiyang Wang "Design of ethernet back-to-back circuit board based on functional safety", Proc. SPIE 12081, Sixth International Conference on Electromechanical Control Technology and Transportation (ICECTT 2021), 120811A (6 February 2022); https://doi.org/10.1117/12.2623873

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KEYWORDS

Switches

Safety

Transceivers

Clocks

Data transmission

Resistance

Digital filtering

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