USB-TYPE Keyboard Transmissions | HP D315 specs

Appendix C Keyboard

C.2.2 USB-TYPE KEYBOARD TRANSMISSIONS

The USB-type keyboard sends essentially the same information to the system that the PS/2 keyboard does except that the data receives additional NRZI encoding and formatting (prior to leaving the keyboard) to comply with the USB I/F specification (discussed in chapter 5 of this guide).

Packets received at the system’s USB I/F and decoded as originating from the keyboard result in an SMI being generated. An SMI handler routine is invoked that decodes the data and transfers the information to the 8042 keyboard controller where normal (legacy) keyboard processing takes place.

C-4hp/Compaq Personal Computers

Changed - April 2003

Image 168

HP D315 manual USB-TYPE Keyboard Transmissions

Contents

Technical reference guide Compaq D315 and hp d325 Personal ComputersPage Compaq D315 and hp d325 Personal Computers Page Featuring the AMD Athlon XP Processor Second Edition -- April Table of Contents PROCESSOR/MEMORY Subsystem INPUT/OUTPUT Interfaces Intregrated Graphics Subsystem Appendix B Ascii Character SET Technical Reference Guide List of Figures Figure C-1. Keystroke Processing ELEMENTS, Block Diagram List of Tables Technical Reference Guide About this Guide Online ViewingHardcopy Additional Information Sources Model Numbering ConventionCompaq Model Numbering Convention XXX/XNN/NN/N/NNNx Hp Model Numbering Convention Serial NumberNotational Conventions DNNNsm/A2.06/NNNb+nyr/NNNX/XX1tNL Values RangesRegister Notation and Usage BIT Notation and Byte Values Common Acronyms and Abbreviations Acronyms and AbbreviationsAcronym/Abbreviation Description DAC DCHDDC DDR INT IPLIRQ ISA PFC PINPIO Post TAD TafiTCP TFT This page is intentionally blank Introduction Compaq D315 Hp d325 Features and Options Standard FeaturesFeature Difference Matrix Feature Compaq D315 Hp d325 Options Mechanical Design Cabinet LayoutsFront Views Rear Views Shows the rear view of the Compaq D315 and HP d325 systems Chassis Layout BackFront Board Layouts D315 D325 System Architecture Architectural Difference Matrix Bios ROM FSBAGP I/F DDR Sdram AMD Athlon XP Processor Heat Sink, Processor, and Socket Assemblies Chipset Support ComponentsNVidia Chipset Comparison Support Component Functions System Memory Mass StorageSerial and Parallel Interfaces Universal Serial BUS Interface Network Interface Controller Graphics SubsystemStandard Graphics Support Comparison D315 D325 Specifications Environmental Specifications Factory ConfigurationElectrical Specifications Audio Subsystem Physical Specifications Diskette Drive SpecificationsCompaq SP# Parameter Optical Drive Specifications Hard Drive SpecificationsParameter 48x CD-ROM 16/10/40x CD-RW Drive CD-R, CD-RW FSB I/F GPU AGP HT I/FXMM1 XMM2 Dimm Athlon XP Processor Processor Overview Athlon XP Type Core Speed Voltage Max. Current Max. Power CPU FPUFPU FSB Processor Upgrading Memory Subsystem D315 SPD Address Map Sdram Dimm Byte DescriptionDimm ID Shows the system memory map This page is intentionally blank System Support PCI BUS Overview PCI Bus Devices and Functions Configuration Cycles PCI BUS Transactions1.1 I/O and Memory Cycles PCI Component Configuration Access PCI Component FunctionDevice # Function # PCI Configuration Space Type Bist PCI BUS Master Arbitration PCI Bus Mastering DevicesREQ/GNT Line Device PCI Power Management Support Option ROM MappingPCI Interrupts PCI SUB-BUSSES PCI Connector PCI Bus Connector PinoutPin Signal AGP BUS Overview BUS Transactions Data Request Data TransfersCLK D1A D1B D2A D2B GNT Trdy CLK D1A D1B D2A D2B D3A D3B D4A D4B GNT Trdy AGP 8X Transfers CLK D1A D1B D2A D2B D3A D3B D4A D4B Adstbs Adstbf Trdy AGP Connector AGP Bus Connector PinoutOvrcnt GND VDD3 VDD System Resources InterruptsMaskable Interrupts Intr Apic Mode Priority Signal Label Source TypicalMode Maskable Interrupt Priorities and Assignments Non-Maskable Interrupts NMI- GenerationMaskable Interrupt Control Registers Port Register SMI- Generation IOCHK- NMI Direct Memory Access Default DMA Channel AssignmentsDMA Channel Device ID DMA Page Registers DMA Page Register AddressesDMA Channel Register I/O Port DMA Controller Registers DMA Controller RegistersRegister Controller System Clock Distribution Clock Generation and DistributionFrequncy Source Destination or Function REAL-TIME Clock and Configuration Memory Clearing Cmos Cmos Archive and Restore Configuration Memory Cmos MapStandard Cmos Locations Location Function Power-On Password Setup PasswordSystem Management Security Functions Cable Lock Provision 1.4 I/O Interface Security Power Management System Boot/ROM Flash Status LED IndicationsSystem Status Acpi Wake-Up Event System Wakes From Thermal Sensing and Cooling System Operational Status LED IndicationsD315 D325 System Status Cooling for D315 Models TachFANSEL1 FANSEL2 Pwrfan 13.d325 Model Fan Control Functional Block Diagram Cooling for d325 Models Register MAP and Miscellaneous Functions System I/O MAPSystem I/O Map Port Function Index Function Reset Value 2 LPC47B367 I/O Controller FunctionsLPC47B367 I/O Controller Control Registers System Status Power LED Beeps Enhanced IDE Interface IDE Programming IDE Configuration Registers IDE PCI Configuration Registers MCP, Device 9/FunctionIDE Bus Master Control Registers IDE Bus Master Control Registers IDE Connector Pin Primary IDE Connector PinoutPin Signal Description Diskette Drive Interface Diskette Drive Interface Configuration Diskette Drive Interface Configuration RegistersIndex Reset Diskette Drive Programming Diskette Drive Interface Control Registers Pri Diskette Drive Connector Pin Diskette Drive Connector Pinout Serial Connector DB-9 Serial Connector PinoutSerial Interface Serial Interface Configuration Serial Interface Configuration RegistersSerial Interface Programming Serial Interface Control Serial Interface Control RegistersAddr Register Standard Parallel Port Mode Parallel Interface Enhanced Parallel Port Mode Extended Capabilities Port Mode Parallel Interface Configuration Parallel Interface Configuration RegistersParallel Interface Programming Parallel Interface Control Parallel Interface Control RegistersAddress Register Parallel Interface Connector DB-25 Parallel Connector PinoutPin Signal Function KEYBOARD/POINTING Device Interface Keyboard Interface Operation To-Keyboard Commands Command 3.1 8042 Configuration Keyboard Interface Configuration RegistersPointing Device Interface Operation KEYBOARD/POINTING Device Interface Programming 3.2 8042 Control Port 60h CPU Commands To Value Command Description KEYBOARD/POINTING Device Interface Connector Keyboard/Pointing Device Connector PinoutData D315 MCP USBDifference Matrix USB Data Formats CRC USB Configuration USB Interface Configuration RegistersUSB Programming USB Control USB Connector USB Connector PinoutUSB Cable Data USB Cable Length Data Functional Analysis Front Panel Assembly TDACD ROM 2 AC97 Audio Controller 3 AC97 Link BUSSync SD OUT Audio Codec Audio Programming Audio Configuration Audio ControlAC’97 Audio Codec Control Registers Audio Specifications AC97 Audio Subsystem Specifications TX/RX LAN PHY I/F Wake on LAN Support Alert on LAN SupportAOL Events Event Description Power Management Support APM EnvironmentAcpi Environment Configuration NIC ProgrammingControl NIC Control Registers NIC Connector NIC SpecificationsNIC Specifications MS-DOS Integrated Graphics Subsystem Functional Description Feature D315 D325 Difference MatrixRGB IGP DAC a Resolution Bits per pixel Color Depth Display ModesGPU Graphics Display Modes Config Reset ProgrammingUpgrading IGP-BASED Graphics Addr Register Value VGA Monitor Connector DB-15 Monitor Connector PinoutPWR SDA Power Supply ASSEMBLY/CONTROL AUX Power Supply Assembly Watt Power Supply Assembly SpecificationsRange Min. Current Max Surge Power Control Power ButtonSystem State Pressed Power Button Results Wake Up Events Wake-On-LAN System Power States Power Transition OS Restart State System Condition Power Distribution 1 3.3/5/12 VDC DistributionConn Pin RTN POK Shows the power supply cabling for the d325 model LOW Voltage PRODUCTION/DISTRIBUTION VID Signal Distribution SystemBoard Power Button/LED FP Header Front Panel Audio Audio 1 HeaderFront Panel USB USB 4/5 Header CD ROM Audio CD1Header System Bios Boot Block Codes ROM FLASHING/UPGRADINGNum Lock Cap Lock Scroll Lock Meaning Boot Functions Boot Device OrderNetwork Boot F12 Support Memory Detection and Configuration Boot Error CodesBoot Error Codes Visual Audible Meaning Setup Utility Setup Utility FunctionsHeading Option Description Translation Mode IDE disks only Removable Media BootTranslation Parameters IDE Disks only Multisector Transfers IDE ATA devices on ly Heading Option Description CTRL+ALT+DEL Setup Utility Functions Setup Utility Functions Setup Utility Functions Function Mode Client Management FunctionsClient Management Functions INT15 Input EAX OutputEBX ECX System ID and ROM Type Edid RetrieveSystem System ID ROM Family PnP ID Temperature Status Drive Fault PredictionPower Management Functions Independent PM Support D315 only System Timer IDE Hard Drive TimerGoing to Sleep in Independent PM System Standby Suspend System OFFWaking Up in Independent PM Acpi Support BEEP/KEYBOARD LED Codes Table A-1Beep/Keyboard LED Codes POWER-ON Self Test Post Messages Power-On Self Test Post MessagesTable A-2 System Error Messages System Error MessagesTable A-3 Memory Error Messages Keyboard Error MessagesTable A-4 Table A-5 Printer Error Messages Video Graphics Error MessagesTable A-6 Table A-7 Diskette Drive Error Messages Serial Interface Error MessagesTable A-8 Table A-9 Modem Communications Error Messages Table A-10 System Status Error Messages Hard Drive Error MessagesTable A-11 Table A-12 Table A-13 Table A-14 Audio Error Messages 17 DVD/CD-ROM Error MessagesNetwork Interface Error Messages Scsi Interface Error Messages 65xx-xx, 66xx-xx Pointing Device Interface Error MessagesTable A-18 Table A-19 12hp/Compaq Personal Computers Table B-1 Ascii Character Set Dec Hex Symbol Table B-1.ASCII Code Set Keyboard Keystroke Processing 1 PS/2-TYPE Keyboard Transmissions Parameter USB-TYPE Keyboard Transmissions Keyboard Layouts Standard Enhanced Keyboards Windows Enhanced Keyboards Figure C-6.National Windows 102W-Key Keyboard Key Positions Easy Access Keyboards Figure C-8.8-Button Easy Access Keyboard Layout Keys Special Single-Keystroke Functions Multi-Keystroke Functions Windows Keystrokes Easy Access Keystrokes Button Easy Access Keyboard Keyboard Commands Keyboard-to-System CommandsScan Codes Table C-1 Table C-2 Keyboard Scan Codes Table C-2. Keyboard Scan Codes 14hp/Compaq Personal Computers Table C-2. Keyboard Scan Codes Connectors Figure C-9.PS/2 Keyboard Cable Connector Male Network Interface Controller Adapters Controller Type Featured on AOL Function Wake UP Functions Ipsec Function APM Environment Acpi Environment Configuration Adapter ProgrammingControl Table D-1 Network Connector Adapter SpecificationsAdapter Specifications Table D-3 8hp/Compaq Personal Computers Index Dimm support Specifications PhysicalDiskette Drive