This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A Multiplexing Communication IC for Automotive Body-Electronic Control
Annotation ability available
Sector:
Language:
English
Abstract
In the field of automotive body electronic control such as control of door locks, power windows, and wipers, there is a growing need of multiplexing communication to reduce the amount of wire harnesses. To meet this need, we developed a multiplexing communication protocol particularly suited to the body electronic control. Based on the developed protocol, we designed a communication control IC and a simple driver/receiver circuit with a few discrete components.
The bus access method of the communication is the CSMA/CD with nondestructive bit arbitration, and its bit rate is 5 kbps. Its transmission media is a single wire. The communication IC has a multiplexing control block and a serial I/O block for an interface with a host CPU. It was fabricated using CMOS technology and has a chip of 2.6mm x 3.0mm in size that contains about 5,000 transistors. The driver/receiver circuit consists of one transistor, one capacitor and several resistors. Therefore, the cost of the circuit is quite low.
This paper gives a detailed description of the design specification and features of the communication control IC and the driver/receiver circuit.
Recommended Content
Technical Paper | Safety and Security Considerations of New Closure Systems |
Technical Paper | Interactive Information Delivery Navigation System |
Technical Paper | SeaTTronics: An Integrated Smart Seat |
Authors
Topic
Citation
Shinojima, Y., Kawakami, M., and Kawahashi, A., "A Multiplexing Communication IC for Automotive Body-Electronic Control," SAE Technical Paper 940364, 1994, https://doi.org/10.4271/940364.Also In
References
- Futami T. et al “Development of Practical Multiplexing Wiring System” SAE paper 880589
- Class B Data Communication Network Interface SAE J1850 1990