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DIVCORE
SCG
DIVSLOW
PCC
PCC_xx
PCC_USB0FS
USB
USB
Functional
Clock
Peripherals
SOSC
FIRC
SIRC
DIV1
DIV1
DIV1
DIV1
DIV3
DIV3
DIV3
DIV3
DIV2
DIV2
DIV2
DIV2
SPLL
DIVCORE_CLK
DIVSLOW_CLK
SPLLDIV1_CLK
SPLLDIV1_CLK
SOSCDIV1_CLK
FIRCDIV1_CLK
SIRCDIV1_CLK
SPLLDIV3_CLK
SOSCDIV3_CLK
FIRCDIV3_CLK
SIRCDIV3_CLK
Core
DMA
Peripheral
Functional
Clocks
PLL
(VCO/2)
Figure 5-1. K32 L2A High Level Clock Distribution
5.2 Clock Sources
The SCG provides four clock sources that are then distributed and optionally divided to
the CPU, memory and various peripherals.
The four clock sources available to the SCG are:
• SOSC – output of the external oscillator (a crystal or externally applied clock input).
• SIRC – output of the slow (2/8Mhz) internal RC oscillator
• FIRC – output of the fast ( 48-60MHZ) internal RC oscillator
• SPLL – output of the PLL, which is multiple of the SOSC or FIRC clock source.
The configuration of these clock sources are detailed in the
chapter.
Clock Sources
K32 L2A Reference Manual, Rev. 2, 01/2020
108
NXP Semiconductors
Содержание K32 L2A Series
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