Digi-IT DIS-4000 Manual do Utilizador descarregar pdf (Página 2)

Rabbit

4000 Microprocessor Designer’s Handbook

Part Number 019-0156 • Printed in the U.S.A.

Digi International Inc. reserves the right to make changes and

improvements to its products without providing notice.

Trademarks

Rabbit

Dynamic C

and RabbitCore

are registered trademarks of Digi International Inc.

Windows

is a registered trademark of Microsoft Corporation.

The latest revision of this manual is available at www.rabbit.com.

1 2 3 4 5 6 7 ... 93 94

4000 Microprocessor 1
Designer’s Handbook 1
Trademarks 2
TABLE OF CONTENTS 3
4 rabbit.com 4
6 rabbit.com 6
1. Introduction 7
8 rabbit.com Introduction 8
2.1 Design Conventions 9
2.1.2 Memory Chips 10
2.1.3 Oscillator Crystals 10
2.2 ESD Design Guidelines 11
2.3 Operating Voltages 11
2.4 Power Consumption 11
2.5 Through-Hole Technology 12
2.6 Moisture Sensitivity 12
3. Core Design and Components 13
3.2 Floating Inputs 14
3.3 Basic Memory Design 15
3.3.1 Memory Access Time 16
4. How Dynamic C Cold Boots 19
5.1 Physical Memory 23
5.1.2 SRAM 24
5.2 Memory Segments 25
5.2.1 Definition of Terms 26
5.3 Separate I&D Space 29
Instruction 32
Register Settings 32
5.3.2.2 Compiling to Flash 33
5.3.3 Customizing Interrupts 34
5.5 Memory Planning 35
6. The Rabbit BIOS 37
6.2 BIOS Flowchart 39
6.3 Internally-Defined Macros 40
6.4 Modifying the BIOS 40
The units 42
<decl> 47
<type> 47
<placement> 49
<vector> 49
<offset> 49
<position> 49
<size> 49
<aspect> 51
<quality> 51
6.5.2.3 Action Qualifiers 52
6.5.2.4 I&D Qualifiers 52
6.5.2.5 Follow Qualifiers 52
7.1 System ID Block Details 58
_readIDBlock 60
7.2 User Block Details 63
7.2.2 Reserved Flash Space 64
7.2.3 Reading the User Block 65
IDBLOCK.LIB 66
7.2.4 Writing the User Block 67
8.1 Overview of Cloning 69
8.2 Creating a Clone 70
8.3 Cloning Questions 71
9.1.2 Reducing Clock Speed 75
9.2.2 Sleepy Mode 76
• memory 76
• the processor core 76
10. Supported Flash Memories 79
Rabbit-Based Systems 81
11.2.2.1 Using serialIO.exe 83
11.2.3 Diagnostic Test #2 84
\\Header Block 85
\\Footer Block 86
Baud Rates 89
92 rabbit.com Index 92
94 rabbit.com Index 94

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