scope:

This document specifies the physical layer requirements for a Carrier Sense Multiple Access/Collision Resolution (CSMA/CR) data link which operates on a single wire medium to communicate among Electronic Control Units (ECU) on road vehicles at normal transmission rates of 33.333 Kbits/s and at a special high speed assembly or service transmission bit rate of 83.333 Kbits/s.

This document is to be referenced by the particular Component Technical Specification which describes any given ECU in which the single wire data link controller and physical layer interface is located. Only the performance of the data link physical layer is specified in this document. ECU environmental and other requirements shall be provided in the Component Technical Specification.

The intended audience includes, but is not limited to ECU suppliers, Controller Area Network (CAN) controller suppliers, CAN transceiver suppliers, component release engineers and platform system engineers.