MC68HC708XL36 FREESCALE [Freescale Semiconductor, Inc], MC68HC708XL36 Datasheet - Page 91

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

9-cgm1m_a
MOTOROLA
The following conditions apply when the PLL is in automatic bandwidth
control mode:
The PLL also can operate in manual mode (AUTO = 0). Manual mode is
used by systems that do not require an indicator of the lock condition for
proper operation. Such systems typically operate well below f
require fast startup. The following conditions apply when in manual
mode:
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Freescale Semiconductor, Inc.
For More Information On This Product,
The ACQ bit (see
page 100) is a read-only indicator of the mode of the filter. (See
Acquisition and Tracking Modes
The ACQ bit is set when the VCO frequency is within a certain
tolerance,
certain tolerance,
The LOCK bit is a read-only indicator of the locked state of the
PLL.
The LOCK bit is set when the VCO frequency is within a certain
tolerance,
a certain tolerance,
CPU interrupts can occur if enabled (PLLIE = 1) when the PLL’s
lock condition changes, toggling the LOCK bit. (See
Register
ACQ is a writable control bit that controls the mode of the filter.
Before turning on the PLL in manual mode, the ACQ bit must be
clear.
Before entering tracking mode (ACQ = 1), software must wait a
given time, t
the PLL by setting PLLON in the PLL control register (PCTL).
Software must wait a given time, t
before selecting the PLL as the clock source to CGMOUT
(BCS = 1).
The LOCK bit is disabled.
CPU interrupts from the CGM are disabled.
Go to: www.freescale.com
on page 98.)
acq
trk
Lock
, and is cleared when the VCO frequency is out of a
(see
CGM
, and is cleared when the VCO frequency is out of
PLL Bandwidth Control Register (PBWC)
unt
Specifications
unl
. (See
. (See
Specifications
Specifications
al
, after entering tracking mode
on page 90.)
on page 333), after turning on
on page 333.)
on page 333.)
Functional Description
MC68HC708XL36
PLL Control
busmax
CGM
and
on
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