NXP Semiconductors KL25 Series - TPM Clocking; USB FS OTG Controller Clocking

LPTMRx_PSR[PCS]
LPTMRx prescaler/glitch
filter clock
MCGIRCLK
OSCERCLK
ERCLK32K
LPO
SIM_SOPT1[OSC32KSEL]
OSC32KCLK
RTC_CLKIN
LPO
Figure 5-4. LPTMRx prescaler/glitch filter clock generation
5.7.5 TPM clocking
The counter for the TPM modules have a selectable clock as shown in the following
figure.
NOTE
The chosen clock must remain enabled if the TPMx is to
continue operating in all required low-power modes.
SIM_SOPT2[TPMSRC]
TPM clock
MCGIRCLK
OSCERCLK
MCGPLLCLK
÷2
SIM_SOPT2[PLLFLLSEL]
MCGFLLCLK
Figure 5-5. TPM clock generation
5.7.6 USB FS OTG Controller clocking
The USB FS OTG controller is a bus master attached to the crossbar switch. As such, its
clock is connected to the system clock.
Module clocks
KL25 Sub-Family Reference Manual, Rev. 3, September 2012
124 Freescale Semiconductor, Inc.