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Motorola ColdFire MCF5281 User Manual

Page 188

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Clock Module

9-18

Freescale Semiconductor

NRM

0 0 1 On On X

NRM

‘LK

1

‘LC

Lose lock or clock RESET

Reset
immediately

NRM

1 0 0 Off Off 0 Lose lock,

f.b. clock,
reference
clock

Regain

NRM

‘LK

1

‘LC

REF not entered
during stop;
SCM entered
during stop only
during oscillator
startup

No regain

Stuck

NRM

1 0 0 Off On 0 Lose lock,

f.b. clock

Regain

NRM

‘LK

1

‘LC

REF mode not
entered during
stop

No f.b. clock or
lock regain

Stuck

Lose reference
clock

SCM

0

0

1

Wakeup without
lock

NRM

1 0 0 Off On 1 Lose lock,

f.b. clock

Regain f.b. clock

Unstable
NRM

0–>‘L
K

0–>
1

‘LC

REF mode not
entered during
stop

No f.b. clock
regain

Stuck

Lose reference
clock

SCM

0

0

1

Wakeup without
lock

NRM

1 0 0 On On 0

NRM

‘LK

1

‘LC

Lose reference
clock

SCM

0

0

1

Wakeup without
lock

Lose f.b. clock

REF

0

X

1

Wakeup without
lock

Lose lock

Stuck

Lose lock, regain

NRM

0

1

‘LC

NRM

1 0 0 On On 1

NRM

‘LK

1

‘LC

Lose reference
clock

SCM

0

0

1

Wakeup without
lock

Lose f.b. clock

REF

0

X

1

Wakeup without
lock

Lose lock

Unstable
NRM

0

0–>
1

‘LC

Table 9-10. Stop Mode Operation (Sheet 3 of 5)

MODE

In

LO

CEN

LOCRE

LO

LRE

PLL

OSC

FWKUP

Expected

PLL

Action at

Stop

PLL Action

During Stop

MODE

Out

LOCKSS

LO

CK

LO

CS

Comments

MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3

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