MCF5282UM Datasheet, PDF (474/766 Pages) Freescale Semiconductor, Inc – MCF5282 and MCF5216 ColdFire Microcontroller User s Manual

FlexCAN
25.2 The CAN System
A typical CAN system is shown below in Figure 25-2.
CAN Station 1
CAN Station 2
ColdFire Processor
CAN Station n
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 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3
Freescale Semiconductor