CHAPTER 5 CLOCK GENERATOR
User’s Manual U16899EJ2V0UD
134
5.8.4 Switching from subsystem clock to high-speed system clock
Figure 5-17. Switching from Subsystem Clock to High-Speed System Clock (Flowchart)
; Subsystem clock operation
; High-speed system clock oscillating?
; High-speed system clock oscillation enabled
; Wait for high-speed system clock oscillation
stabilization time
; High-speed system clock operation
CLS is changed from 1 to 0.
MCS = 1 not changed.
High-speed system clock oscillation stabilization time elapsed
High-speed system
clock oscillation
stabilization time
not elapsed
Yes: High-speed system clock oscillation stopped
No: High-speed system
clock oscillating
MCC
←
0
PCC.4 (CSS) = 1
MCM = 03H
MCC = 1?
OSTC check
CSS
←
0
High-speed system clock operation
Subsystem
clock operation
High-speed system
cock operation
Содержание MuPD78F0132H
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