Table 5-2. Module clocks (continued)
Module
Bus interface clock
Internal clocks
I/O interface clocks
Mode controller
Flash clock
—
—
MCM
System clock
—
—
EWM
Bus clock
LPO
—
Watchdog timer
Bus clock
LPO
—
Clocks
MCG
Flash clock
MCGOUTCLK, MCGPLLCLK,
MCGFLLCLK, MCGIRCLK,
OSCCLK, RTC OSC,
IRC48MCLK
—
OSC
Bus clock
OSCERCLK, OSCCLK,
OSCERCLK_UNDIV,
OSC32KCLK
—
IRC48M
—
IRC48MCLK
—
Memory and memory interfaces
Flash Controller
System clock
Flash clock
—
Flash memory
Flash clock
—
—
EzPort
System clock
—
EZP_CLK
Security
CRC
Bus clock
—
—
RNGA
Bus clock
—
—
Analog
ADC
Bus clock
OSCERCLK , IRC48MCLK
—
CMP
Bus clock
—
—
DAC
Bus clock
—
—
VREF
Flash clock
—
—
Timers
PDB
Bus clock
—
—
FlexTimers
Bus clock
MCGFFCLK
FTM_CLKIN
x
PIT
Bus clock
—
—
LPTMR
Flash clock
LPO, OSCERCLK_UNDIV,
MCGIRCLK, ERCLK32K
—
RTC
Flash clock
EXTAL32
—
Communication interfaces
USB FS OTG
System clock
—
DSPI
Bus clock
—
DSPI_SCK
I
2
C
Bus clock
—
I2C_SCL
UART0, UART1
System clock
—
—
UART2
Bus clock
—
—
LPUART0
Bus clock
—
I
2
S
Bus clock
I2S_TX_BCLK,
I2S_RX_BCLK
Table continues on the next page...
Chapter 5 Clock Distribution
K22F Sub-Family Reference Manual , Rev. 3, 7/2014
Freescale Semiconductor, Inc.
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