Integrated Microcontroller Reference Manual

Clock Module
MCF52211 ColdFire® Integrated Microcontroller Reference Manual, Rev. 2
6-4 Freescale Semiconductor
Figure 6-1. Clock Module Block Diagram
EXTAL
CLKMOD1
CLKSRC
PLL
Low Power
Divider
LPD[3:0]
Reference Clock
0
1
ADC auto-standby clock
PPRMH[11]
CFM
PPRMH[9]
PWM
PPRMH[8]
GPT
PPRMH[7]
ADC
PPRMH[4:3]
PPRMH[1]
Edge Port
PPRMH[0]
GPIO / Ports
STOP MODE
CLKOUT
PPRML[17]
Interrupt Controller
PPRML[16:13]
DMA Timers
PPRML[10]
QSPI
PPRML[9]
I
2
C
PPRML[7:5
UARTs
PPRML[4]
DMA
ColdFire V2 Core
BDM
PITs
DISCLK
PPRML[1]
÷ 2
System Clock (f
sys
)
Pre-
Divider
USB_CTRL
USB
USB_ALT_CLK
CCHR
ON-CHIP 8 MHz
OSCILLATOR
0
1
EXTERNAL
OSCILLATOR
OSCILLATOR
XTAL
XTAL
0
1
CLKMOD0
See note
below
Note: Must be 48 MHz for USB
operation.