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CAN Bit Rate Configuration
Technical Paper
2005-01-1314
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The Controller Area Network (CAN) provides the user with several parameters to configure the bit timing, sampling point, and bit rate. With this flexibility comes some complexity in choosing the correct values for these parameters and properly configuring the bit rate. A given bit rate can be achieved by setting these parameter in more than one way. It is also possible to incorrectly configure these parameters and achieve a close enough bit rate that will allow the system to function but not perform in an optimized manner. This paper discusses how to calculate the bit rate and how to choose some of these parameters. A set of equations were developed and used in an example to configure the bit rate for a PIC18FXX8 CAN controller.
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Topic
Citation
Meskouri, M. and Ganesan, S., "CAN Bit Rate Configuration," SAE Technical Paper 2005-01-1314, 2005, https://doi.org/10.4271/2005-01-1314.Also In
Automotive Electronics on CD-ROM from the SAE 2005 World Congress
Number: SP-1980CD; Published: 2005-04-11
Number: SP-1980CD; Published: 2005-04-11
Systems Engineering, Electronics Simulation, Advanced Electronics Packaging, and Electromagnetic Compatibility
Number: SP-1926; Published: 2005-04-11
Number: SP-1926; Published: 2005-04-11
References
- Bosch Controller Area Network (CAN) Version 2.0A, 2.0B
- SAE information report J1583 Controller Area Network (CAN), an in vehicle serial communication protocol Mar 90
- Bosch Controller Area Netwrok (CAN) Version 2.0. Protocol Standard Motorola
- Dietmayer Klaus Overberg, Karl W. “CAN bit Timing Requirements” SAE paper 970295
- PIC18FXX8 Data Sheet, High performance, 28/40 - pin Enhanced Flash Microcontrollers with CAN (DS41159B) 2002