Information

SIM_SOPT2 field descriptions (continued)
Field Description
011 LPO clock (1 kHz)
100 MCGIRCLK
101 RTC 32.768kHz clock
110 OSCERCLK0
111 Reserved
4
RTCCLKOUTSE
L
RTC clock out select
Selects either the RTC 1 Hz clock or the 32.768kHz clock to be output on the RTC_CLKOUT pin.
0 RTC 1 Hz clock is output on the RTC_CLKOUT pin.
1 RTC 32.768kHz clock is output on the RTC_CLKOUT pin.
3–0
Reserved
This read-only field is reserved and always has the value zero.
Memory map and register definition
K20 Sub-Family Reference Manual, Rev. 2, Feb 2012
228 Freescale Semiconductor, Inc.