Contents
Section
Number
Title
Number
MOTOROLA
Contents
v
Paragraph
Page
About This Book
Audience..........................................................................................................xxxiii
Organization.....................................................................................................xxxiii
Suggested Reading........................................................................................... xxxiv
General Information..................................................................................... xxxiv
Related Documentation..................................................................................xxxv
Conventions.......................................................................................................xxxv
Acronyms and Abbreviations .......................................................................... xxxvi
Terminology Conventions..................................................................................... xli
Chapter 1
Overview
1.1
1.1.1
1.1.2
1.1.2.1
1.1.2.2
1.1.2.3
1.1.2.4
1.1.3
1.1.3.1
1.1.3.2
1.1.4
1.1.4.1
1.1.4.2
1.1.4.3
1.1.4.4
1.1.5
1.1.6
1.1.6.1
1.1.6.2
1.1.7
1.1.8
Overview..............................................................................................................1-1
Features ...........................................................................................................1-3
G2_LE-Specific Features.................................................................................1-6
True Little-Endian Mode.............................................................................1-7
Critical Interrupt ..........................................................................................1-7
Other New Signals.......................................................................................1-7
Additional Supervisor-Level SPRs..............................................................1-8
Instruction Unit................................................................................................1-8
Instruction Queue and Dispatch Unit ..........................................................1-8
Branch Processing Unit (BPU)....................................................................1-9
Independent Execution Units...........................................................................1-9
Integer Unit (IU)..........................................................................................1-9
Floating-Point Unit (FPU)...........................................................................1-9
Load/Store Unit (LSU)..............................................................................1-10
System Register Unit (SRU)......................................................................1-10
Completion Unit ............................................................................................1-10
Memory Subsystem Support.......................................................................... 1-11
Memory Management Units (MMUs)....................................................... 1-11
Cache Units................................................................................................1-12
Core Interface ................................................................................................1-13
System Support Functions.............................................................................1-13
F
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