Controller Area Network (CAN) - Electrical Engineering and ...

Controller area Network (CAN)EECS 461, Fall 2008 J. A. CookJ. S. Freudenberg1 IntroductionUp until now, we ve considered our embedded control system to be self-contained: an algorithm implementedin software resident on a single microprocessor, communicating with its environment through sensors andactuators via peripheral devices such as an analog-to-digital converter. In fact, many embedded systems aredistributed, consisting of multiple microprocessors communicating over one or more networks to accomplishshared tasks. For example, a modern automobile may have seventy or more microprocessors communicat-ing over several networks to manage entertainment and navigation functions, central locking mechanisms,lighting and other vehicle systems.

The most common protocol is TCP/IP (Transmission Control Protocol/Internet Protocol), which is used to connect hosts on the Internet. Pre-dating TCP/IP was the Open Systems Interconnection (OSI) protocol initiated in 1982 by the Inter-national Organization for Standardization (ISO 7498-1:1994(E)). The OSI protocol is sometimes referred to

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