Apple 17-INCH manual Controller, DMA Support

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CHAPTER 2

Architecture

●support for 64 MB of DDR video memory with 128-bit interface

●2D and 3D graphics acceleration

●transform acceleration

●lighting acceleration

●video acceleration

●support for MPEG decoding

●support for video mirror mode

●support for dual-display mode

●S-video output for a TV monitor

The interface between the graphics IC and the rest of the system is an AGP4x (accelerated graphics port, quadruple speed) bus on the Intrepid IC. The AGP bus has 32 data lines, a clock speed of 66 MHz, and supports deeply pipelined read and write operations.

The graphics IC uses a graphics address remapping table (GART) to translate AGP logical addresses into physical addresses. The graphics driver software can allocate memory in both the graphics SDRAM and the main memory.

The graphics IC supports the internal flat-panel display and an external monitor. The external monitor can either mirror the built-in display or show additional desktop space (dual-display mode). For information about the displays and supported resolutions, see “Flat-Panel Display” (page 44) and “External Monitors” (page 45).

I/O Controller

The I/O controller IC in the PowerBook G4 17-inch computer is a custom IC called Intrepid. It provides the interface and control signals for the devices and functions described in the following sections.

Note: In the device tree, the I/O controller is named “mac-io”.

DMA Support

The Intrepid IC provides DB-DMA (descriptor-based direct memory access) support for the following I/O channels:

●Ultra DMA ATA interface to the the internal hard drive

●modem slot interface to the built-in modem

●IIS channel to the sound IC

I/O Controller

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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 DevicesOpen Firmware Computer IdentificationPower Saving Features Reduced Processor PerformanceOperating Modes Overview of PowerBook G4 17-inch System Software Block Diagram Block Diagram and BusesPowerPC G4 Microprocessor Microprocessor and CachesMain ICs and Buses 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 InterfacePower Controller Sound CircuitryAirPort Extreme Interface CardBus Controller IC Pin Signal name USB ConnectorsUSB Ports VCCFireWire Ports FireWire 400 ConnectorUSB Storage Devices 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 ExtremeBluetooth Technology AirPort Extreme HardwareAirPort Extreme Software 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-RWTrackpad KeyboardMedia type Reading speed maximum 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 functionFlat-Panel Display Picture sizeBlack margins Analog Monitor Resolutions Dual Display and Mirror ModeExternal Monitors Frame rateDVI-I Connector Digital Display Resolutions15Main signals on the DVI-I connector Pin number Video output connector External Video PortPicture size Pixel depth 512 by 24 bpp 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-DIMMsRAM SO-DIMM Electrical Limits Address MultiplexingDevice size CardBus Slot Expansion Features CardBus Slot PowerPC G4 Microprocessor Apple Technical Notes3D Graphics Mac OS Velocity Engine AltiVecKit Open FirmwarePC Card Manager RAM Expansion ModulesFireWire Interface ATA DevicesUSB Interface Wireless Networks BluetoothDigital Visual Interface Supplemental Reference Documents Bluetooth Other Abbreviations Abbreviations and Standard UnitsATA AsicCAS CD-ROMJedec ISOLED MDISPD SO-DIMMTmds USB

17-INCH specifications

The Apple 17-inch model has garnered attention for its impressive balance of performance and portability, making it a popular choice among professionals and creative users alike. Boasting a sleek design, it combines cutting-edge technologies with user-friendly features that enhance productivity and entertainment experiences.

At the heart of the 17-inch display is Apple's Retina technology, which provides stunning visual clarity and vibrant colors. With a resolution that surpasses traditional screens, users can expect crisp text and detailed images, making it an ideal choice for graphic designers, video editors, and anyone who values high-quality visuals. The large screen size creates an immersive experience, especially useful for multitasking, viewing spreadsheets side by side, or editing documents side by side.

Powered by Apple’s latest custom silicon, the 17-inch model delivers remarkable performance. The optimizations in the chip architecture enhance not only processing speeds but also energy efficiency, allowing users to accomplish more without compromising battery life. These advancements in chip technology together with integrated graphics offer smooth performance during intensive tasks such as rendering high-definition graphics or playing demanding games.

The laptop also comes equipped with a robust battery system designed to keep users productive for extended periods. Users can expect several hours of usage on a single charge, ensuring that they can work or enjoy media without the constant need to recharge. Furthermore, fast-charging capabilities minimize downtime, making it convenient for on-the-go professionals.

In terms of connectivity, the 17-inch model offers multiple Thunderbolt and USB-C ports, allowing for quick data transfer and connecting a variety of external devices. This versatility is essential for professionals who may need to hook up to external monitors or utilize peripherals for enhanced functionality.

The built-in audio system features high-fidelity speakers, delivering an outstanding audio experience for music, movies, and video conferencing. The integration of advanced microphones further enhances clarity during calls, making communication seamless.

Overall, the Apple 17-inch laptop stands out as a powerful tool designed for those who demand performance, quality, and flexibility in their devices. With its blend of stunning visuals, powerful processing capabilities, and user-centric features, it remains a strong contender in the market for those seeking a reliable and stylish computing solution.
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