M16C Datasheet, PDF (170/262 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Preliminary Specifications REV.B
Mitsubishi microcomputers
Specifications in this manual are tentative and subject to change.
M16C / 6N Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
CAN Module
After leaving the MCU 'Reset'-state, the CAN module starts in 'Reset/Initialization' mode. All module setup
parameters should be written in the relevant registers to enable the CAN module to take part in the CAN bus
communication with the correct transfer rate , bit timing etc. (CAN Configuration Register). After finishing the
initialization stage, the 'Reset' bit (CAN Control Register) has to be cleared by the user and the CAN module
will start the bus participation according to the CAN specification.
In order to change the existing setting of the protocol configuration, activate 'Reset/Initialization' mode also
during normal operation. In this case, the CAN module will leave the CAN bus communication in conformity
with the protocol. This means, a just started transmit process has to be finished before entering the 'reset'
state.
In case the protocol engine enters the 'Error BusOff' state, the system can be restarted in 'Error Active'
mode by setting the 'RetBusOff' bit in the CAN Control Register. This 'reset' for the 'protocol controller' has
no effect on the CAN-Interface configuration. The entire slot-configuration, slot contents and all SFR set-
tings will be kept without changes.
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