Introduction to 15-inch PowerBook G4 Developer Note 9 Who Should Read This Document?9 Organization of This Document 9 Chapter 1 Overview to the 15-inch PowerBook G4 11 New Features 11 All Features 12 Appearance 14 Peripheral Devices 16 System Software 17 Open Firmware 17 Computer Identification 17 Power Management 18 Chapter 2 Architecture 21 Block Diagram and Buses 21 Block Diagram 21 Main IC and Buses 22 Microprocessor and Cache 23 PowerPC G4 Microprocessor 23 Level 2 Cache 23 Intrepid Controller Functions and Buses 23 System RAM 24 Boot ROM 24 FireWire Controller 24 Ethernet Controller 24 Video Display Subsystem 25 DMA Support 26 Interrupt Support 26 USB 2.0 Interface 26 Ultra DMA/100 Interface 26 EIDE Interface

27 Modem Support 27 Sound Circuitry 27 Power Controller 27 AirPort Extreme Interface 28 CardBus Controller IC 28 Chapter 3 Devices and Ports 29 USB 2.0 Ports 29 USB Connectors 29 USB Storage Devices 30 FireWire Ports 30 FireWire 400 Connector 31 FireWire 800 Connector 32 FireWire Device Programming 33 Target Disk Mode 33 Ethernet Port 34 Internal Modem 35 AirPort Extreme 36 Data Security 36 AirPort Extreme Hardware 37 AirPort Extreme Software 37 Bluetooth Technology 37 Hard Disk Drive 38 Hard Disk Dimensions 38 Hard Disk Connector 39 DVD-ROM/CD-RW Combo Drive 42 DVD-R /CD-RW SuperDrive 43 Trackpad 44 Keyboard 44 Changing the Operation of the Keyboard 44 Flat-Panel Display 50 External Monitors 50 Dual Display and Mirror Mode 51 Analog Monitor Resolutions 51 Digital Display Resolutions 52 DVI-I Connector 52 External Video Port 54 Sound System 55 Sound Inputs 55 Sound Output 56 Digitizing Sound 57 Chapter 4 Expansion Features 59 RAM Expansion Slots 59 Accessing the RAM Slots 59 Mechanical Design of DDR RAM SO-DIMMs 60 Electrical Design of DDR RAM SO-DIMMs 60 DDR RAM SO-DIMM Electrical Limits 62 PC Card/CardBus Slot 63 Appendix A Supplemental Reference Documents 65 Apple Technical Notes 65 3D Graphics 65 PowerPC G4 Microprocessor 65 Velocity Engine 66 Mac OS X 66 I/O Kit 66 Open Firmware 66 RAM Expansion Modules 67 ATA Devices 67 USB 2.0 Interface 68 FireWire Interface 68 Digital Visual Interface 68 Wireless Networks 68 Bluetooth 69 Appendix B Abbreviations 71 Abbreviations and Standard Units 71 Other Abbreviations 71

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