SIM_SOPT2 field descriptions (continued)
Field
Description
110
OSCERCLK0
111
IRC 48 MHz clock
4
RTCCLKOUTSEL
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 field is reserved.
This read-only field is reserved and always has the value 0.
12.2.4 System Options Register 4 (SIM_SOPT4)
Address: 4004_7000h base + 100Ch offset = 4004_800Ch
Bit
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
R
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
SIM_SOPT4 field descriptions
Field
Description
31–30
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
29
FTM0TRG1SRC
FlexTimer 0 Hardware Trigger 1 Source Select
Selects the source of FTM0 hardware trigger 1.
0
PDB output trigger 1 drives FTM0 hardware trigger 1
1
FTM2 channel match drives FTM0 hardware trigger 1
28
FTM0TRG0SRC
FlexTimer 0 Hardware Trigger 0 Source Select
Selects the source of FTM0 hardware trigger 0.
Table continues on the next page...
Memory map and register definition
K22F Sub-Family Reference Manual , Rev. 3, 7/2014
254
Freescale Semiconductor, Inc.