Figure 18-56: Normal Shutdown Process; Figure 18-57: Forced Shutdown Process - NEC V850E/PH2 User Manual

Caution: Do not read- or write-access any registers by software between setting the EFSD bit
and clearing the GOM bit.
Chapter 18 AFCAN Controller

Figure 18-56: Normal shutdown process

START START
INIT mode INIT mode
Clear GOM bit Clear GOM bit
GOM = 0? GOM = 0?
Shutdown successful Shutdown successful Shutdown successful
GOM = 0, EFSD = 0 GOM = 0, EFSD = 0 GOM = 0, EFSD = 0
END END

Figure 18-57: Forced shutdown process

START START
Set EFSD bit Set EFSD bit
Clear GOM bit Clear GOM bit
No No
GOM = 0? GOM = 0?
Yes Yes
Shutdown successful Shutdown successful Shutdown successful
GOM = 0, EFSD = 0 GOM = 0, EFSD = 0 GOM = 0, EFSD = 0
END END
User's Manual U16580EE3V1UD00
No No
Yes Yes
Must be a subsequent write Must be a subsequent write
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