Apple 17-INCH manual Block Diagram and Buses

Page 17

CHAPTER 2

Architecture

This chapter describes the architecture of the PowerBook G4 17-inch computer. It includes information about the major components on the main logic board: the microprocessor, the other main ICs, and the buses that connect them to each other and to the I/O interfaces.

Block Diagram and Buses

This section is an overview of the major ICs and buses on the computer’s main logic board.

Block Diagram

Figure 2-1(page 17) is a simplified block diagram of the main logic board. The diagram shows the input and output connectors, the main ICs, and the buses that connect them together.

Figure 2-1

Block diagram

Block Diagram and Buses

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Legacy Document 2003-03-01 © 2003 Apple Computer, Inc. All Rights Reserved.

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Contents 2003-03-01 PowerBook G4 17-inchApple Inc Contents Expansion Features Abbreviations Contents Figures and Tables Removing RAM expansion slot cover Organization of This Document Introduction to PowerBook G4 17-inchIntroduction PowerBook G4 17-inch Features Overview of PowerBook G4 17-inchAppearance 1Front view of the computer System Software Peripheral Devices Open Firmware Computer IdentificationOperating Modes Power Saving FeaturesReduced Processor Performance Overview of PowerBook G4 17-inch System Software Block Diagram Block Diagram and BusesMain ICs and Buses PowerPC G4 MicroprocessorMicroprocessor and Caches Level 2 Cache Intrepid Controller and BusesLevel 3 Cache Bus Destinations Width of data pathFireWire Controllers Boot ROMSystem RAM Ethernet ControllerDMA Support ControllerUSB Interface Interrupt SupportUltra ATA-100 Interface ATA-33 InterfaceAirPort Extreme Interface Power ControllerSound Circuitry CardBus Controller IC Pin Signal name USB ConnectorsUSB Ports VCCUSB Storage Devices FireWire PortsFireWire 400 Connector Pin Signal name Description FireWire 800 ConnectorTPB R TPA RTarget Disk Mode Booting from a FireWire DevicePin Signal name Signal definition Ethernet PortRXN Internal ModemData Security AirPort ExtremeAirPort Extreme Software Bluetooth TechnologyAirPort Extreme Hardware Hard Disk Drive Hard Disk Dimensions4Maximum dimensions of the internal hard disk Hard Disk ConnectorPin number Signal name Signal AssignmentsSignal name Signal description ATA Signal DescriptionsMedia type Reading speed maximum Writing speed SuperDrive DVD-R /CD-RWMedia type Reading speed maximum TrackpadKeyboard Keyboard Illustrations Changing the Operation of the Keyboard7Alternate operations of function and control keys Keyboard 8Embedded numeric keypad operation Keyboard Using the Num Lock Key Using the Fn KeyFunction Keys Key name Control buttonOther Control Keys Embedded KeypadKey name Control button F10 Keypad functionBlack margins Flat-Panel DisplayPicture size Analog Monitor Resolutions Dual Display and Mirror ModeExternal Monitors Frame rateDVI-I Connector Digital Display Resolutions15Main signals on the DVI-I connector Picture size Pixel depth 512 by 24 bpp Pin number Video output connectorExternal Video Port Sound Inputs Sound SystemSound Outputs Modem Activity Sound SignalsBuilt-in Microphone Audio Input JackInternal Speakers Digitizing SoundDevices and Ports Sound System RAM Expansion Slots Accessing the RAM SlotsElectrical Design of DDR RAM SO-DIMMs Mechanical Design of DDR RAM SO-DIMMsDDR Sdram Devices Configuration of DDR RAM SO-DIMMsDevice size RAM SO-DIMM Electrical LimitsAddress Multiplexing CardBus Slot Expansion Features CardBus Slot 3D Graphics PowerPC G4 MicroprocessorApple Technical Notes Mac OS Velocity Engine AltiVecKit Open FirmwarePC Card Manager RAM Expansion ModulesUSB Interface FireWire InterfaceATA Devices Digital Visual Interface Wireless NetworksBluetooth Supplemental Reference Documents Bluetooth Other Abbreviations Abbreviations and Standard UnitsATA AsicCAS CD-ROMJedec ISOLED MDISPD SO-DIMMTmds USB