Fujitsu 8FX Hardware Manual page 316

CHAPTER 17 CLOCK SUPERVISOR COUNTER
17.3 Operations
● Clock Supervisor Counter Operation 3
The counter stops counting if it reaches "255". It cannot count further than "255".
Selected time-base
timer interval
Main/Sub-oscillation clock
CMCEN
Internal counter
CMDR register
● Clock Supervisor Counter Operation 4
If the external clock selected stops, the counter stops counting. According to this counter stop,
the software identifies that the external clock selected is in the abnormal state.
Selected time-base
timer interval
Main/Sub-oscillation clock
CMCEN
Internal counter
CMDR register
● Clock Supervisor Counter Operation 5
The counter is cleared to "0" by the software if the CMCEN is set to "0" while the counter is
operating.
Selected time-base
timer interval
Main/Sub-oscillation clock
CMCEN
Internal counter
CMDR register
294
Figure 17.3-3 Clock Supervisor Counter Operation 3
0
Figure 17.3-4 Clock Supervisor Counter Operation 4
Figure 17.3-5 Clock Supervisor Counter Operation 5
0
FUJITSU SEMICONDUCTOR LIMITED
MB95630H Series
0
0
0
0
255
255
Software setting
0
MN702-00009-2v0-E