11/2/95
SECTION 1: OVERVIEW
UM Rev 1
Freescale Semiconductor, Inc.
TABLE OF CONTENTS (Continued)
Paragraph
Number
Page
Number
Title
5.7.1.3
5.7.1.3.1
5.7.1.3.2
5.7.1.3.3
5.7.1.4
5.7.1.5
5.7.1.6
5.7.1.7
5.7.2
5.7.2.1
5.7.2.2
5.7.2.3
5.7.3
5.7.3.1
5.7.3.2
5.7.3.3
5.7.3.4
5.7.3.5
5.7.3.6
5.7.3.7
5.7.3.8
5.7.3.9
5.7.3.10
5.7.3.11
5.7.3.12
5.7.3.13
5.7.3.14
Bus Controller Resources .......................................................................5-89
Prefetch Controller................................................................................5-90
Write Pending Buffer. ...........................................................................5-90
Microbus Controller..............................................................................5-91
Instruction Execution Overlap.................................................................5-91
Effects of Wait States................................................................................5-92
Instruction Execution Time Calculation................................................5-92
Effects of Negative Tails..........................................................................5-93
Instruction Stream Timing Examples ........................................................5-94
Timing Example 1—Execution Overlap................................................5-94
Timing Example 2—Branch Instructions ..............................................5-95
Timing Example 3—Negative Tails.......................................................5-96
Instruction Timing Tables............................................................................5-97
Fetch Effective Address...........................................................................5-99
Calculate Effective Address....................................................................5-100
MOVE Instruction ......................................................................................5-101
Special-Purpose MOVE Instruction.......................................................5-101
Arithmetic/Logic Instructions...................................................................5-102
Immediate Arithmetic/Logic Instructions...............................................5-105
Binary-Coded Decimal and Extended Instructions............................5-106
Single Operand Instructions...................................................................5-107
Shift/Rotate Instructions...........................................................................5-108
Bit Manipulation Instructions...................................................................5-109
Conditional Branch Instructions.............................................................5-110
Control Instructions...................................................................................5-111
Exception-Related Instructions and Operations..................................5-111
Save and Restore Operations................................................................5-111
Section 6
DMA Controller Module
6.1
6.2
DMA Module Overview....................................................................................6-2
DMA Module Signal Definitions.....................................................................6-4
DMA Request (DREQ≈)................................................................................6-4
DMA Acknowledge (DACK≈)......................................................................6-4
DMA Done (DONE≈).....................................................................................6-4
Transfer Request Generation.........................................................................6-4
Internal Request Generation.......................................................................6-4
Internal Request, Maximum Rate...........................................................6-5
Internal Request, Limited Rate...............................................................6-5
External Request Generation .....................................................................6-5
External Burst Mode.................................................................................6-5
6.2.1
6.2.2
6.2.3
6.3
6.3.1
6.3.1.1
6.3.1.2
6.3.2
6.3.2.1
MOTOROLA
MC68340 USER'S MANUAL
xi
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