
MOTOROLA
ii
CTM
REFERENCE
TABLE OF CONTENTS
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Paragraph
Number
Page
Number
Title
3
INTERRUPTS
3.1
3.2
3.3
Interrupt levels on the IMB.....................................................................................3-1
Arbitration..............................................................................................................3-2
CTM daisy-chain priority........................................................................................3-2
4
COUNTER PRESCALER SUBMODULE
(CPSM)
4.1
4.2
4.3
4.3.1
4.3.2
CPSM description..................................................................................................4-1
Freeze action on the CPSM...................................................................................4-2
CPSM registers .....................................................................................................4-2
CPCR — CPSM control register......................................................................4-2
CPTR — CPSM test register ...........................................................................4-3
5
FREE-RUNNING COUNTER SUBMODULE
(FCSM)
5.1
5.2
5.3
5.3.1
5.4
5.5
5.6
5.7.1
5.7.2
FCSM description..................................................................................................5-1
The FCSM counter................................................................................................5-1
FCSM clock sources..............................................................................................5-2
FCSM external event counting.........................................................................5-2
The FCSM time base bus driver............................................................................5-3
FCSM interrupts ....................................................................................................5-3
Freeze action on the FCSM...................................................................................5-3
FCSMSIC — FCSM status/interrupt/control register.......................................5-4
FCSMCNT — FCSM counter register .............................................................5-6
6
MODULUS COUNTER SUBMODULE
(MCSM)
6.1
6.2
6.3
6.3.1
6.3.1.1
6.4
6.4.1
6.5
MCSM description.................................................................................................6-1
The MCSM modulus latch.....................................................................................6-2
The MCSM counter ...............................................................................................6-2
Loading the MCSM counter register................................................................6-2
Using the MCSM as a free-running counter...............................................6-3
MCSM clock sources.............................................................................................6-3
MCSM external event counting........................................................................6-3
The MCSM time base bus driver...........................................................................6-4
F
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Freescale Semiconductor, Inc.