PXN20RM Datasheet, PDF (152/1376 Pages) Freescale Semiconductor, Inc – PXN20 Microcontroller

Clocks, Reset, and Power (CRP)
INIT
(Run Mode)
F
Sleep
Request
T
Assert clock stop
to clock control block
debug
F
enabled?
T
Set Sleep
Handshake bit
in NPC PCR
wait
5 clks
Handshake
F
bit cleared?
T
Mode Transition: RUN
SLEEP
- Acknowledge clock
stop ready to CCB
- Assert TDO OBE
Go to Figure 6-16
3 clks
T
Clock stop
F
asserted
by CCB?
Figure 6-15. SLEEP Mode Entry Diagram
6-20
PXN20 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor