NEC V850E/Dx3 Preliminary User's Manual page 762

Chapter 19
762
Downloaded from Elcodis.com electronic components distributor
Figure 19-51 Bus-Off recovery
Preliminary User's Manual U17566EE1V2UM00
START
No
BOFF bit = 1?
Yes
Set CnCTRL register.
(clear OPMODE bit)
DN = 0
INIT mode ? AND
MUC = 0
Yes
Access to register other
than CnCTRL and
CnGMCTRL registers.
Forced recovery
from bus off?
Yes
Set CCERC bit.
Set CCERC bit = 1
Clear CCERC bit = 0
Set CnCTRL register.
(set OPMODE bit)
END
CAN Controller (CAN)
No
No
Set CnCTRL register.
(Set OPMODE bit)
Wait for recovery
from bus off.