MC68HC708XL36 FREESCALE [Freescale Semiconductor, Inc], MC68HC708XL36 Datasheet - Page 88

• Manufacturer Part Number: MC68HC708XL36
• Description: HCMOS Microcontroller Unit
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

CGM
Phase-Locked
Loop Circuit (PLL)
Circuits
MC68HC708XL36
88
PLL Programming Register (PPG)
PLL Bandwidth Control Register
PLL Control Register (PCTL)
Register Name
(PBWC)
The PLL is a frequency generator that can operate in either acquisition
mode or tracking mode, depending on the accuracy of the output
frequency. The PLL can change between acquisition and tracking
modes either automatically or manually.
The PLL consists of the following circuits:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Write:
Write:
Write:
Register:
Address:
Table 1. I/O Register Address Summary
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Freescale Semiconductor, Inc.
For More Information On This Product,
Voltage-controlled oscillator (VCO)
Modulo VCO frequency divider
Phase detector
Loop filter
Lock detector
Figure 2. I/O Register Summary
PLLIE
Bit 7
AUTO
MUL7
0
0
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$001C
PCTL
= Unimplemented
LOCK
MUL6
PLLF
6
0
1
CGM
PLLON
MUL5
ACQ
5
1
1
PBWC
$001D
MUL4
BCS
XLD
4
0
0
$001E
PPG
VRS7
3
1
1
0
0
VRS6
2
1
1
0
1
VRS5
1
1
1
0
1
MOTOROLA
6-cgm1m_a
Bit 0
VRS4
1
1
0
0