TABLE OF CONTENTS
Paragraph
Title
Page
SECTION 1INTRODUCTION
SECTION 2NOMENCLATURE
2.1
2.2
2.3
2.4
2.5
Symbols and Operators ..................................................................................2-1
CPU32 Registers ............................................................................................2-2
Pin and Signal Mnemonics .............................................................................2-3
Register Mnemonics .......................................................................................2-5
Conventions ...................................................................................................2-6
SECTION 3OVERVIEW
3.1
MCU Features ................................................................................................3-1
System Integration Module (SIM) ...........................................................3-1
Central Processing Unit (CPU32) ...........................................................3-1
Queued Serial Module (QSM) ................................................................3-1
General-Purpose Timer (GPT) ...............................................................3-2
System Block Diagram and Pin Assignment Diagrams ..................................3-2
Pin Descriptions .............................................................................................3-5
Signal Descriptions .........................................................................................3-7
Intermodule Bus ...........................................................................................3-10
System Memory Map ...................................................................................3-10
Internal Register Map ...........................................................................3-10
Address Space Maps ...........................................................................3-10
System Reset ...............................................................................................3-16
SIM Reset Mode Selection ...................................................................3-16
MCU Module Pin Function During Reset .............................................3-17
3.1.1
3.1.2
3.1.3
3.1.4
3.2
3.3
3.4
3.5
3.6
3.6.1
3.6.2
3.7
3.7.1
3.7.2
SECTION 4 SYSTEM INTEGRATION MODULE
4.1
4.2
General ...........................................................................................................4-1
System Configuration and Protection .............................................................4-2
Module Mapping .....................................................................................4-3
Interrupt Arbitration .................................................................................4-3
Show Internal Cycles ..............................................................................4-4
Factory Test Mode .................................................................................4-4
Register Access .....................................................................................4-4
Reset Status ...........................................................................................4-4
Bus Monitor ............................................................................................4-4
Halt Monitor ............................................................................................4-5
Spurious Interrupt Monitor ......................................................................4-5
Software Watchdog ................................................................................4-5
4.2.1
4.2.2
4.2.3
4.2.4
4.2.5
4.2.6
4.2.7
4.2.8
4.2.9
4.2.10
MC68331
MOTOROLA
USER’S MANUAL
iii
MOTOROLA [ MOTOROLA ]
