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MC68340 データシート(Datasheet) 12 Page - Freescale Semiconductor, Inc

部品番号. MC68340
部品情報  Integrated Processor with DMA User’s Manual
ダウンロード  441 Pages
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メーカー  FREESCALE [Freescale Semiconductor, Inc]
ホームページ  http://www.freescale.com
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 12 page
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11/2/95
SECTION 1: OVERVIEW
UM Rev 1
MOTOROLA
MC68340 USER'S MANUAL
xi
TABLE OF CONTENTS (Continued)
Paragraph
Page
Number
Title
Number
5.7.1.3
Bus Controller Resources .......................................................................5-89
5.7.1.3.1
Prefetch Controller................................................................................5-90
5.7.1.3.2
Write Pending Buffer. ...........................................................................5-90
5.7.1.3.3
Microbus Controller..............................................................................5-91
5.7.1.4
Instruction Execution Overlap.................................................................5-91
5.7.1.5
Effects of Wait States................................................................................5-92
5.7.1.6
Instruction Execution Time Calculation ................................................5-92
5.7.1.7
Effects of Negative Tails ..........................................................................5-93
5.7.2
Instruction Stream Timing Examples ........................................................5-94
5.7.2.1
Timing Example 1—Execution Overlap................................................5-94
5.7.2.2
Timing Example 2—Branch Instructions ..............................................5-95
5.7.2.3
Timing Example 3—Negative Tails.......................................................5-96
5.7.3
Instruction Timing Tables ............................................................................5-97
5.7.3.1
Fetch Effective Address ...........................................................................5-99
5.7.3.2
Calculate Effective Address....................................................................5-100
5.7.3.3
MOVE Instruction ......................................................................................5-101
5.7.3.4
Special-Purpose MOVE Instruction.......................................................5-101
5.7.3.5
Arithmetic/Logic Instructions...................................................................5-102
5.7.3.6
Immediate Arithmetic/Logic Instructions...............................................5-105
5.7.3.7
Binary-Coded Decimal and Extended Instructions ............................5-106
5.7.3.8
Single Operand Instructions ...................................................................5-107
5.7.3.9
Shift/Rotate Instructions...........................................................................5-108
5.7.3.10
Bit Manipulation Instructions...................................................................5-109
5.7.3.11
Conditional Branch Instructions.............................................................5-110
5.7.3.12
Control Instructions...................................................................................5-111
5.7.3.13
Exception-Related Instructions and Operations..................................5-111
5.7.3.14
Save and Restore Operations................................................................5-111
Section 6
DMA Controller Module
6.1
DMA Module Overview....................................................................................6-2
6.2
DMA Module Signal Definitions.....................................................................6-4
6.2.1
DMA Request (DREQ
≈)................................................................................6-4
6.2.2
DMA Acknowledge (
DACK
≈)......................................................................6-4
6.2.3
DMA Done (
DONE
≈).....................................................................................6-4
6.3
Transfer Request Generation .........................................................................6-4
6.3.1
Internal Request Generation.......................................................................6-4
6.3.1.1
Internal Request, Maximum Rate...........................................................6-5
6.3.1.2
Internal Request, Limited Rate ...............................................................6-5
6.3.2
External Request Generation .....................................................................6-5
6.3.2.1
External Burst Mode.................................................................................6-5
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com




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