Apple 17-INCH manual ATA Signal Descriptions, Signal name Signal description

Page 36

CHAPTER 3

Devices and Ports

Pin number

Signal name

Pin number

Signal name

27

IORDY, /DDMARDY, DSTROBE

28

CSEL

29

/DMACK

30

GROUND

31

INTRQ

32

/IOCS16

33

/DA1

34

/PDIAG, /CBLID

35

/DA0

36

/DA2

37

/CS0

38

/CS1

39

/DASP

40

GROUND

41

+5V LOGIC

42

+5V MOTOR

43

GROUND

44

Reserved

/IOCS16 is not used; see Table 3-7(page 36).

ATA Signal Descriptions

Table 3-7(page 36) describes the signals on the ATA hard disk connector.

Table 3-7Signals on the ATA hard disk connector

Signal name

Signal description

/DA(0–2)

Device address; used by the computer to select one of the registers in the ATA drive. For

 

more information, see the descriptions of the CS0 and CS1 signals.

DD(0–15)

Data bus; buffered from IOD(16–31) of the computer’s I/O bus. DD(0–15) are used to transfer

 

16-bit data to and from the drive buffer. DD(8–15) are used to transfer data to and from the

 

internal registers of the drive, with DD(0–7) driven high when writing.

/CBLID

The host checks this signal after power on or hardware reset to detect whether an

 

80-conductor cable is present.

/CS0

Register select signal. It is asserted low to select the main task file registers. The task file

 

registers indicate the command, the sector address, and the sector count.

/CS1

Register select signal. It is asserted low to select the additional control and status registers

 

on the ATA drive.

CSEL

Cable select; not available on this computer (n.c.).

/DASP

Device active or slave present; not available on this computer (n.c.).

/DDMARDY

Drive ready to receive Ultra DMA data.

/DIOR

I/O data read strobe.

36Hard Disk Drive

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

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Contents PowerBook G4 17-inch 2003-03-01Apple Inc Contents Expansion Features Abbreviations Contents Figures and Tables Removing RAM expansion slot cover Introduction to PowerBook G4 17-inch Organization of This DocumentIntroduction Overview of PowerBook G4 17-inch PowerBook G4 17-inch FeaturesAppearance 1Front view of the computer Peripheral Devices System SoftwareOpen Firmware Computer IdentificationPower Saving Features Reduced Processor PerformanceOperating Modes Overview of PowerBook G4 17-inch System Software Block Diagram and Buses Block DiagramPowerPC G4 Microprocessor Microprocessor and CachesMain ICs and Buses Intrepid Controller and Buses Level 2 CacheLevel 3 Cache Bus Destinations Width of data pathBoot ROM FireWire ControllersSystem RAM Ethernet ControllerController DMA SupportInterrupt Support USB InterfaceUltra ATA-100 Interface ATA-33 InterfacePower Controller Sound CircuitryAirPort Extreme Interface CardBus Controller IC USB Connectors Pin Signal nameUSB Ports VCCFireWire Ports FireWire 400 ConnectorUSB Storage Devices FireWire 800 Connector Pin Signal name DescriptionTPA R TPB RBooting from a FireWire Device Target Disk ModePin Signal name Signal definition Ethernet PortInternal Modem RXNAirPort Extreme Data SecurityBluetooth Technology AirPort Extreme HardwareAirPort Extreme Software Hard Disk Dimensions Hard Disk DriveHard Disk Connector 4Maximum dimensions of the internal hard diskSignal Assignments Pin number Signal nameATA Signal Descriptions Signal name Signal descriptionSuperDrive DVD-R /CD-RW Media type Reading speed maximum Writing speedTrackpad KeyboardMedia type Reading speed maximum Changing the Operation of the Keyboard Keyboard Illustrations7Alternate operations of function and control keys Keyboard 8Embedded numeric keypad operation Keyboard Using the Fn Key Using the Num Lock KeyFunction Keys Key name Control buttonEmbedded Keypad Other Control KeysKey name Control button F10 Keypad functionFlat-Panel Display Picture sizeBlack margins Dual Display and Mirror Mode Analog Monitor ResolutionsExternal Monitors Frame rateDigital Display Resolutions DVI-I Connector15Main signals on the DVI-I connector Pin number Video output connector External Video PortPicture size Pixel depth 512 by 24 bpp Sound System Sound InputsModem Activity Sound Signals Sound OutputsBuilt-in Microphone Audio Input JackDigitizing Sound Internal SpeakersDevices and Ports Sound System Accessing the RAM Slots RAM Expansion SlotsMechanical Design of DDR RAM SO-DIMMs Electrical Design of DDR RAM SO-DIMMsConfiguration of DDR RAM SO-DIMMs DDR Sdram DevicesRAM SO-DIMM Electrical Limits Address MultiplexingDevice size CardBus Slot Expansion Features CardBus Slot PowerPC G4 Microprocessor Apple Technical Notes3D Graphics Velocity Engine AltiVec Mac OSKit Open FirmwareRAM Expansion Modules PC Card ManagerFireWire Interface ATA DevicesUSB Interface Wireless Networks BluetoothDigital Visual Interface Supplemental Reference Documents Bluetooth Abbreviations and Standard Units Other AbbreviationsAsic ATACAS CD-ROMISO JedecLED MDISO-DIMM SPDTmds USB

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