iMacDevNote.pdf

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iMac

Hardware & Drivers > Apple Hardware

2003-05-09

Apple Inc.

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Use of the “keyboard” Apple logo

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may constitute trademark infringement and

unfair competition in violation of federal

and state laws.

No licenses, express or implied, are granted

with respect to any of the technology

described in this document. Apple retains

all intellectual property rights associated

with the technology described in this

document. This document is intended to

assist application developers to develop

applications only for Apple-labeled

computers.

Every effort has been made to ensure that

the information in this document is

accurate. Apple is not responsible for

typographical errors.

Apple Inc.

1 Infinite Loop

Cupertino, CA 95014

408-996-1010

.Mac is a registered service mark of Apple

Inc.

Apple, the Apple logo, AirPort, AirPort

Extreme, AppleScript, FireWire, iMac, Mac,

Mac OS, Macintosh, SuperDrive, and

Velocity Engine are trademarks of Apple

Inc., registered in the United States and

other countries.

DEC is a trademark of Digital Equipment

Corporation.

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Graphics, Inc.

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Machines Corporation, used under license

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Contents

Introduction

Introduction to iMac

Organization of This Document 9

Chapter 1

Overview of iMac

17” iMac New Features 11

15” iMac Feature Set 12

17” iMac Feature Set 13

Comparison of 15” and 17” iMac Features 14

System Software 15

Machine Identification 15

Velocity Engine Acceleration 16

Chapter 2

Architecture of the 15” iMac

Block Diagrams and Buses 17

Block Diagrams 17

Main ICs and Buses 18

Microprocessor and Cache 18

PowerPC G4 Microprocessor 19

Level 2 Cache 19

Memory and I/O Device Controller 19

System RAM 20

Boot ROM 20

FireWire 400 Controller 20

Ethernet Controller 20

Pangea IC Video Display Subsystem 21

USB Interface 21

Ultra ATA-66 Interface 22

Modem Support 22

Sound Circuitry 22

Power Controller 22

AirPort Wireless Support (optional) 22

Chapter 3

Architecture of the 17” iMac

Block Diagrams and Buses 23

C O N T E N T S

Block Diagrams 23

Main ICs and Buses 24

Microprocessor and Cache 24

PowerPC G4 Microprocessor 24

Level 2 Cache 25

Memory and I/O Device Controller 25

System RAM 26

Boot ROM 26

FireWire 400 Controller 26

Ethernet Controller 26

Intrepid IC Video Display Subsystem 26

USB Interface 27

Ultra ATA-100 Interface 27

Ultra ATA-66 Interface 28

Modem Support 28

Bluetooth Technology 28

Sound Circuitry 28

Power Controller 28

AirPort Extreme Wireless Support (optional) 29

Chapter 4

Devices and Ports on the 15” iMac

USB Ports 31

USB Connectors 31

USB Features 32

FireWire 400 Ports 33

FireWire 400 Connector 33

Target Disk Mode 34

Ethernet Port 34

AirPort Card 35

AirPort Data Security 35

AirPort Hardware 36

AirPort Software 36

Internal Modem 36

Bluetooth Technology 37

Hard Disk Drive 37

Combo (CD-RW/DVD-ROM) Drive 37

Flat Panel Display 38

Video Monitor Port 38

Monitor Connector 39

Keyboard 39

Keyboard Features 39

Keyboard Layout 40

Programming the Function Keys 40

Multi-Media Control Keys 41

Keyboard and USB 41

C O N T E N T S

Mouse 41

Sound System 41

Sound Inputs 42

Sound Outputs 42

Sound Specifications 43

Chapter 5

Devices and Ports on the 17” iMac

USB Ports 45

USB Connectors 45

USB Features 46

FireWire 400 Ports 47

FireWire 400 Connector 47

Target Disk Mode 48

Ethernet Port 49

AirPort Extreme Card 49

AirPort Extreme Data Security 50

AirPort Extreme Hardware 50

AirPort Extreme Software 50

Internal Modem 51

Bluetooth Technology 51

Hard Disk Drive 52

SuperDrive (CD-RW/DVD-R) 52

Flat Panel Display 52

Video Monitor Port 53

Monitor Connector 54

Video Display Adapter 54

Keyboard 55

Keyboard Features 55

Keyboard Layout 56

Programming the Function Keys 56

Multi-Media Control Keys 57

Keyboard and USB 57

Mouse 57

Sound System 57

Sound Inputs 58

Sound Outputs 59

Sound Specifications 60

Chapter 6

RAM Expansion on the 15” iMac

RAM Expansion Slots 61

RAM Expansion Modules for Pangea IC System 61

Mechanical Design of the SO-DIMM 62

Electrical Design of the SO-DIMM 62

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