TABLE OF CONTENTS
(Continued)
Paragraph
Title
Page
5.2.1
5.2.2
5.2.3
5.2.4
5.2.4.1
5.2.4.2
5.2.5
Data Registers ........................................................................................5-4
Address Registers ..................................................................................5-5
Program Counter ....................................................................................5-6
Control Registers ....................................................................................5-6
Status Register ............................................................................... 5-6
Alternate Function Code Registers ................................................ 5-6
Vector Base Register (VBR) ...................................................................5-7
5.3
5.4
5.5
5.6
5.7
5.8
5.8.1
5.8.2
5.8.2.1
5.8.2.2
5.9
5.9.1
5.9.2
Memory Organization .....................................................................................5-7
Virtual Memory ...............................................................................................5-9
Addressing Modes ..........................................................................................5-9
Processing States ..........................................................................................5-9
Privilege Levels ............................................................................................5-10
Instructions ...................................................................................................5-10
M68000 Family Compatibility ...............................................................5-14
Special Control Instructions ..................................................................5-14
Low Power Stop (LPSTOP) ......................................................... 5-14
Table Lookup and Interpolate (TBL) ............................................ 5-14
Exception Processing ...................................................................................5-14
Exception Vectors ................................................................................5-15
Types of Exceptions .............................................................................5-16
Exception Processing Sequence ..........................................................5-17
Development Support ...................................................................................5-17
M68000 Family Development Support .................................................5-17
Background Debugging Mode ..............................................................5-18
Enabling BDM .............................................................................. 5-19
BDM Sources ............................................................................... 5-19
Entering BDM ............................................................................... 5-20
BDM Commands .......................................................................... 5-21
Background Mode Registers ........................................................ 5-21
Returning from BDM .................................................................... 5-22
Serial Interface ............................................................................. 5-22
Recommended BDM Connection ................................................. 5-24
Deterministic Opcode Tracking ............................................................5-24
On-Chip Breakpoint Hardware .............................................................5-25
Loop Mode Instruction Execution .................................................................5-25
5.9.3
5.10
5.10.1
5.10.2
5.10.2.1
5.10.2.2
5.10.2.3
5.10.2.4
5.10.2.5
5.10.2.6
5.10.2.7
5.10.2.8
5.10.3
5.10.4
5.11
SECTION 6QUEUED SERIAL MODULE
6.1
6.2
6.2.1
6.2.1.1
General ...........................................................................................................6-1
QSM Registers and Address Map ..................................................................6-2
QSM Global Registers ............................................................................6-2
Low-Power Stop Operation ............................................................ 6-2
MOTOROLA
vi
MC68331
USER’S MANUAL
MOTOROLA [ MOTOROLA ]
