The Can System; Message Buffers; Message Buffer Structure; Typical Can System - Motorola ColdFire MCF5281 User Manual

The CAN System

25.2 The CAN System
A typical CAN system is shown below in Figure 25-2.
CAN Station n
CAN Station 2
CAN Station 1
MCF5282
FlexCAN
CANTX
CANRX
Transceiver
CAN Bus
Figure 25-2. Typical CAN system
Each CAN station is connected physically to the CAN bus through a transceiver. The
transceiver provides the transmit drive, waveshaping, and receive/compare functions
required for communicating on the CAN bus. It can also provide protection against damage
to the FlexCAN caused by a defective CAN bus or defective stations.

25.3 Message Buffers

25.3.1 Message Buffer Structure

Figure 25-3 shows the extended (29 bit) ID message buffer structure. Figure 25-4 displays
the standard (11 bit) ID message buffer structure.
25-4 MCF5282 User's Manual MOTOROLA