MC68HC908LJ12CPB FREESCALE [Freescale Semiconductor, Inc], MC68HC908LJ12CPB Datasheet - Page 116

• Manufacturer Part Number: MC68HC908LJ12CPB
• Description: 8-bit microcontroller units
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

8.5.6 CGM VCO Clock Output (CGMVCLK)
8.5.7 CGM Base Clock Output (CGMOUT)
8.5.8 CGM CPU Interrupt (CGMINT)
8.6 CGM Registers
MC68HC908LJ12
Freescale Semiconductor
—
Rev. 2.1
CGMVCLK is the clock output from the VCO.
CGMOUT is the clock output of the CGM. This signal goes to the SIM,
which generates the MCU clocks. CGMOUT is a 50 percent duty cycle
clock running at twice the bus frequency. CGMOUT is software
programmable to be equal to CGMXCLK, CGMXCLK divided by two, or
CGMPCLK divided by two.
CGMINT is the interrupt signal generated by the PLL lock detector.
The following registers control and monitor operation of the CGM:
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PLL control register (PCTL)
(See
PLL bandwidth control register (PBWC)
(See
PLL multiplier select registers (PMSH and PMSL)
(See
PLL VCO range select register (PMRS)
(See
PLL reference divider select register (PMDS)
(See
Clock Generator Module (CGM)
8.6.1 PLL Control
8.6.2 PLL Bandwidth Control
8.6.3 PLL Multiplier Select
8.6.4 PLL VCO Range Select
8.6.5 PLL Reference Divider Select
Register.)
Registers.)
Register.)
Register.)
Clock Generator Module (CGM)
Register.)
Technical Data
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