
CTM
REFERENCE
MOTOROLA
i
TABLE OF CONTENTS
Paragraph
Number
Page
Number
Title
TABLE OF CONTENTS
1
FUNCTIONAL OVERVIEW
1.1
1.2
1.3
1.3.1
1.3.2
1.3.3
1.3.4
1.3.5
1.3.6
1.4
1.5
1.6
1.7
1.8
1.9
1.10
CTM features.........................................................................................................1-1
CTM description ....................................................................................................1-2
Byte/word/long word accesses..............................................................................1-3
8-bit (byte) accesses........................................................................................1-3
16-bit (word) aligned accesses ........................................................................1-4
16-bit (word) misaligned accesses...................................................................1-4
32-bit (long word) aligned accesses ................................................................1-5
32-bit (long word) misaligned accesses...........................................................1-5
3-byte accesses...............................................................................................1-5
The time base bus system.....................................................................................1-5
Pin descriptions .....................................................................................................1-6
Input capture (IC) concepts ...................................................................................1-6
Output compare (OC) concepts.............................................................................1-7
Pulse accumulator (PA) concepts..........................................................................1-8
Pulse width modulation (PWM) concepts..............................................................1-9
Using and clearing flag bits ...................................................................................1-10
2
BUS INTERFACE UNIT SUBMODULE
(BIUSM)
2.1
2.2
2.3
2.4
2.5
2.5.1
2.5.2
2.5.3
BIUSM description.................................................................................................2-1
Freeze action on the BIUSM..................................................................................2-1
LPSTOP action on the BIUSM...............................................................................2-1
STOP and WAIT action on the BIUSM ..................................................................2-2
BIUSM registers ....................................................................................................2-2
BIUMCR — BIUSM module configuration register ..........................................2-2
BIUTEST — BIUSM test configuration register ...............................................2-4
BIUTBR — BIUSM time base register .............................................................2-5
F
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