178
Chapter 4
Clock Generator
Preliminary User’s Manual U17566EE1V2UM00
(2)
Main oscillator state transitions
(3)
Ring oscillator states
(4)
Sub oscillator states
MainOSC
stabilization
Reset
MainOSC
operating
MainOSC
started by F/W
Stabilization counter
expired
MainOSC
stopped
PSM release from
- STOP (PSM[1:0] = 01
B
)
PSM release from
- Sub-WATCH (PSM[1:0] = 11
B
) and OSCDIS = 0
- WATCH (PSM[1:0] = 10
B
)
PSM entry with
- PSM[1:0] = 01
B
(STOP)
- PSM[1:0] = 11
B
(Sub-WATCH)
- PSM[1:0] = 10
B
(WATCH) and OSCDIS = 1
PSM release from
- Sub-WATCH (PSM[1:0] = 11
B
) and OSCDIS = 1
RingOSC
operating
Reset
RingOSC
stopped
PSM release
PSM entry with
- PSM[1:0] = 01
B
(STOP) and ROSTP = 1
- PSM[1:0] = 11
B
(Sub-WATCH) and ROSTP = 1
- PSM[1:0] = 10
B
(WATCH) and ROSTP = 1
SubOSC
operating
Reset
SubOSC
stopped
PSM release
PSM entry with
- PSM[1:0] = 01
B
(STOP) and SCSTP = 1
electronic components distributor