Functional Description
24.4.1 MCG mode state diagram
The nine states of the MCG are shown in the following figure and are described in Table
24-18. The arrows indicate the permitted MCG mode transitions.
FEEFEI
Reset
BLPI
FBI FBE
BLPE
PBE
PEE
Stop
Returns to the state that was active before
the MCU entered Stop mode, unless a
reset occurs while in Stop mode.
Entered from any state when
the MCU enters Stop mode
Figure 24-16. MCG mode state diagram
NOTE
• During exits from LLS or VLPS when the MCG is in PEE
mode, the MCG will reset to PBE clock mode and the
C1[CLKS] and S[CLKST] will automatically be set to
2’b10.
• If entering Normal Stop mode when the MCG is in PEE
mode with C5[PLLSTEN]=0, the MCG will reset to PBE
clock mode and C1[CLKS] and S[CLKST] will
automatically be set to 2’b10.
24.4
Functional Description
KL25 Sub-Family Reference Manual, Rev. 3, September 2012
384 Freescale Semiconductor, Inc.
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