MC68HC908GP32_08 Datasheet, PDF (62/266 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

Clock Generator Module (CGM)
OSC2
OSCILLATOR (OSC)
OSC1
SIMOSCEN (FROM SIM)
OSCSTOPENB
(FROM CONFIG)
CGMXCLK
(TO: SIM, TIMTB15A, ADC)
PHASE-LOCKED LOOP (PLL)
CGMRDV
REFERENCE
DIVIDER
CGMRCLK
R
RDS3–RDS0
V_DDA CGMXFC V_SSA
BCS
CLOCK
SELECT
CIRCUIT
A
÷ 2 ^B S*
VPR1–VPR0
*WHEN S = 1,
CGMOUT = B
VRS7–VRS0
L
2^E
PHASE
DETECTOR
LOOP
FILTER
VOLTAGE
CONTROLLED
OSCILLATOR
PLL ANALOG
CGMVCLK
LOCK
DETECTOR
AUTOMATIC
MODE
CONTROL
INTERRUPT
CONTROL
CGMOUT
(TO SIM)
SIMDIV2
(FROM SIM)
PLLIREQ
(TO SIM)
CGMVDV
LOCK
AUTO
MUL11–MUL0
N
FREQUENCY
DIVIDER
ACQ
PLLIE PLLF
PRE1–PRE0
2^P
FREQUENCY
DIVIDER
Figure 5-1. CGM Block Diagram
MC68HC908GP32 Data Sheet, Rev. 10
62
Freescale Semiconductor