NXP Semiconductors KL25 Series - System Options Register 4 (SIM_SOPT4)

SIM_SOPT2 field descriptions (continued)
Field Description
Selects either the RTC 1 Hz clock or the OSC clock to be output on the RTC_CLKOUT pin.
0 RTC 1 Hz clock is output on the RTC_CLKOUT pin.
1 OSCERCLK 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
0
TPM2CLKSEL TPM1CLKSEL TPM0CLKSEL
0
TPM2CH0SRC
0
TPM1CH0SRC
0
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
0
W
Reset
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
SIM_SOPT4 field descriptions
Field Description
31–27
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
26
TPM2CLKSEL
TPM2 External Clock Pin Select
Selects the external pin used to drive the clock to the TPM2 module.
NOTE: The selected pin must also be configured for the TPM external clock function through the
appropriate pin control register in the port control module.
0 TPM2 external clock driven by TPM_CLKIN0 pin.
1 TPM2 external clock driven by TPM_CLKIN1 pin.
25
TPM1CLKSEL
TPM1 External Clock Pin Select
Selects the external pin used to drive the clock to the TPM1 module.
NOTE: The selected pin must also be configured for the TPM external clock function through the
appropriate pin control register in the port control module.
Table continues on the next page...
Chapter 12 System integration module (SIM)
KL25 Sub-Family Reference Manual, Rev. 3, September 2012
Freescale Semiconductor, Inc. 197