Computers as Components, 2nd Edition

422 CHAPTER 8 Networks

Automotive and aviation electronics (avionics) are similar in many respects

but have some important differences. We will start with automotive electronics and

then go on to discuss avionics.

8.5.1 Automotive Networks

The CAN bus [Bos07] was designed for automotive electronics and was first used

in production cars in 1991. CAN is very widely used in cars as well as in other

applications.

The CAN bus uses bit-serial transmission. CAN runs at rates of 1 MB/s over a

twisted pair connection of 40 m. An optical link can also be used. The bus protocol

supports multiple masters on the bus. Many of the details of the CAN and I

2

C buses

are ...