Information

12.2.3 System Options Register 2 (SIM_SOPT2)
SOPT2 contains the controls for selecting many of the module clock source options on
this device. See the Clock Distribution chapter for more information including clocking
diagrams and definitions of device clocks.
Address: SIM_SOPT2 is 4004_7000h base + 1004h offset = 4004_8004h
Bit 31 30 29 28 27 26 25 24
R
0 0 0
W
Reset
0 0 0 0 0 0 0 0
Bit
23 22 21 20 19 18 17 16
R
0
0
USBSRC
0
PLLFLLSEL
W
Reset
0 0 0 0 0 0 0 0
Bit
15 14 13 12 11 10 9 8
R
0
TRACECLKSEL
PTD7PAD
0 0
W
Reset
0 0 0 1 0 0 0 0
Bit
7 6 5 4 3 2 1 0
R
CLKOUTSEL
RTCCLKOUTSEL
0
W
Reset
0 0 0 0 0 0 0 0
Memory map and register definition
K20 Sub-Family Reference Manual, Rev. 2, Feb 2012
226 Freescale Semiconductor, Inc.