NXP Semiconductors K22F series, Reference Manual, Page: 556 / 1407

MCG_C8 field descriptions (continued)
Field Description
clock indication. The CME1 bit should be set to a logic 1 when the MCG is in an operational mode that
uses the RTC as its external reference clock or if the RTC is operational. CME1 bit must be set to a logic 0
before the MCG enters any Stop mode. Otherwise, a reset request may occur when in Stop mode. CME1
should also be set to a logic 0 before entering VLPR or VLPW power modes.
0 External clock monitor is disabled for RTC clock.
1 External clock monitor is enabled for RTC clock.
4–1
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
0
LOCS1
RTC Loss of Clock Status
This bit indicates when a loss of clock has occurred. This bit is cleared by writing a logic 1 to it when set.
0 Loss of RTC has not occur.
1 Loss of RTC has occur
25.3.13 MCG Control 12 Register (MCG_C12)
Address: 4006_4000h base + 11h offset = 4006_4011h
Bit 7 6 5 4 3 2 1 0
Read 0
Write
Reset 0 0 0 0 0 0 0 0
MCG_C12 field descriptions
Field Description
Reserved This field is reserved.
This read-only field is reserved and always has the value 0.
25.3.13 MCG Status 2 Register (MCG_S2)
Address: 4006_4000h base + 12h offset = 4006_4012h
Bit 7 6 5 4 3 2 1 0
Read 0
Write
Reset 0 0 0 0 0 0 0 0
MCG_S2 field descriptions
Field Description
Reserved This field is reserved.
This read-only field is reserved and always has the value 0.
Memory Map/Register Definition
K22F Sub-Family Reference Manual, Rev. 4, 08/2016
556 NXP Semiconductors