Distribution, Power Supply ASSEMBLY/CONTROL, Aux | Compaq 850

Technical Reference Guide

Chapter 6

POWER and SIGNAL

DISTRIBUTION

6.Chapter 6 POWER SUPPLY AND DISTRIBUTION

6.1INTRODUCTION

This chapter describes the power supply and method of general power and signal distribution. Topics covered in this chapter include:

♦	Power supply assembly/control (6.2)	page 6-1
♦	Power distribution (6.3)	page 6-5
♦	Signal distribution (6.4)	page 6-8

6.2POWER SUPPLY ASSEMBLY/CONTROL

This system features a power supply assembly that is controlled through programmable logic (Figure 6-1).

Front Bezel

Power On/Off

Power On

110/230 VAC

Mains 110 VAC

115/230 VAC Select SW

230 VAC

System Board

CPU, Slots, Chipsets, Logic

& Voltage Regulators

PS	Fan	Fan	+5	+3.3 +12.8 VDC
On	Off	Spd	AUX	AUX
				+5 VDC	+5 VDC
	Power Supply			-5 VDC	Drives
	Power Supply			+12 VDC	Drives
		Assembly		+12 VDC	+12 VDC
				-12 VDC

Figure 6–1.Power Distribution and Control, Block Diagram

Compaq Deskpro EXS and Workstation 300 Personal Computers 6-1

Featuring the Intel Pentium 4 Processor

First Edition - December 2000

Image 131

Compaq 850 manual Distribution, Power Supply ASSEMBLY/CONTROL, Aux

Contents

Intel Pentium 4 Processor Intel 850 Chipset Technical Reference GuidePage TRG Page Reader Feedback Page Technical Reference Guide First Edition -- December Table of Contents Parallel Interface Connector Power Supply and Distribution Appendix B Ascii Character SET Appendix D COMPAQ/NVIDIA TNT2 PRO AGP Graphics Card Appendix H COMPAQ/MATROX Millennium G450 AGP Graphics Card Appendix L COMPAQ/ADAPTEC Scsi Host Adapter List of Figures Figure C-1. Keystroke Processing ELEMENTS, Block Diagram Figure L-3. External Ultra Scsi Connector 50-PIN List of Tables Technical Reference Guide Able H-3 This page is intentionally blank Additional Information Sources Using this GuideIntroduction About this Guide BIT Notation Signal LabelsNotational Conventions Register Notation and Usage Acronym/Abbreviation Description Common Acronyms and AbbreviationsAcronyms and Abbreviations DMA DimmDIN DIP LIF LANLCD LED Secam ScsiSdram SEC Introduction System Overview Deskpro EXS Deskpro Workstation Features and OptionsStandard Features Standard Feature Difference Matrix Options Deskpro EXS Deskpro Workstation Mechanical DesignCabinet Layouts Front Views Rear View Shows the rear cabinet layout of the controls and connectors Front Chassis LayoutBack System Board Layout Board Layout System Architecture FWH MCH AGP RdramICH2 LPC Pentium 4 Processor Support Component Functions ChipsetSupport Components Chipset Comparison Universal Serial BUS Interface System MemoryMass Storage SERIAL, Parallel Interfaces G450 Graphics SubsystemStandard AGP Graphics Card Comparison Matrox Audio Subsystem SpecificationsEnvironmental Specifications Factory Configuration Electrical Specifications Compaq SP# Physical SpecificationsDiskette Drive Specifications Parameter Desktop Configuration Minitower Configuration Parameter 18.0 GB 20.0 GB 40.0 GB 48x CD-ROM Drive Specifications SP# 187217-B21Hard Drive Specifications Parameter Measurement XMM1 XMM2 Rimm Processor Memory SubsystemFSB I/F AGP MCH Processor Overview FSB CPU FPU Processor Upgrading Dimm Rdram Memory SubsystemSdram Interface Rdram Interface Dual Channel Rambus Attributes Rambus Signal Attributes Each ChannelSignal Name Rambus Channel Transactions Exit Rdram Functionality Rdram Power ManagementRdram CONFIGURATION/CONTROL State Power Refresh Shows the system memory map Config Register Value Egister Subsystem ConfigurationHost/PCI Bridge Configuration Registers MCH, Device Reset System Support NIC Eide USB PCI BUS Overview 1.1 I/O and Memory Cycles Configuration CyclesPCI BUS Transactions PCI Component Vendor/Device ID Bus # Device # Function # PCI Component Configuration Access DataIdsel Bist PCI Configuration Space Type REQ/GNT Line Device PCI BUS Master ArbitrationPCI Bus Mastering Devices PCI SUB-BUSSES PCI Power Management SupportOption ROM Mapping PCI Interrupts Addr Register Value PCI ConfigurationLPC Bridge Configuration Registers ICH, Function 0, Device Config Reset Pin Signal PCI ConnectorPCI Bus Connector Pinout BUS Transactions AGP BUS Overview CLK D1A D1B D2A D2B GNT Trdy Data RequestData Transfers GNT Trdy AGP 2X Transfers Config Reset Addr Register Value AGP Configuration Trdy Devsel AGP ConnectorAGP Bus Connector Pinout Ovrcnt GND KEY Maskable Interrupts System ResourcesInterrupts Maskable Interrupt Priorities and Assignments Apic ModeMode Port Register Non-Maskable InterruptsNMI- Generation Maskable Interrupt Control Registers IOCHK- NMI SMI- Generation DMA Channel Function Port Direct Memory AccessDMA Channel Assignments And Register Ports Frequncy Source Destination REAL-TIME Clock and Configuration MemorySystem Clock Distribution Clock Generation and Distribution Clearing Cmos Location Function Cmos Archive and RestoreConfiguration Memory Cmos Map Standard Cmos Locations RTC Control Register A, Byte 0Ah Configuration Byte 0Eh, Diagnostic Status Bit Function Reserved Configuration Byte 13h, Security Functions Configuration Byte 24h, System Board Identification Configuration Byte 27h, Speed Control/External Drive Configuration Byte 2Ah, Hard Drive Timeout Configuration Byte 2Eh, 2Fh, Checksum Configuration Byte 35h, APM Status Flags Security Functions Power-On PasswordSetup Password System Management Acpi Wake-Up Event System Wakes From Power ManagementCable Lock Provision 1.4 I/O Interface Security NUM Lock CAPs Lock Scroll Lock Event System Boot/ROM Flash Status LED IndicationsSystem Status System Operational Status LED Indications CMD Temperature Sensing and Cooling Port Function Register MAP and Miscellaneous FunctionsSystem I/O MAP System I/O Map PS LED NIC REQ5 Irqe Irqf Irqg Irqh HD LED 2 82801 ICH General Purpose Functions82801 ICH2 Gpio Register Utilization Gpio Port # Function Direction Controller Control Registers Index Function Reset Value3 I/O Controller Functions Function Direction 3.1 LPC47B357 Gpio UtilizationLPC47B357 Gpio Port Utilization 3.2 LPC47B357 I/O Controller Miscellaneous Functions System Status Power LED This page is intentionally blank IDE Programming INPUT/OUTPUT InterfacesEnhanced IDE Interface IDE Bus Master Control Registers IDE Configuration RegistersEide PCI Configuration Registers 82801, Device 31/Function IDE Bus Master Control Registers Pin Signal Description IDE ConnectorPin Primary IDE Connector Pinout Diskette Drive Interface Diskette Drive Programming Diskette Drive Interface ConfigurationDiskette Drive Interface Configuration Registers Index Reset Pri Diskette Drive Interface Control Registers Pin Diskette Drive Connector Pinout Diskette Drive Connector 1 RS-232 Interface DB-9 Serial Connector PinoutSerial Interface Serial Interface Programming Serial Interface ConfigurationSerial Interface Configuration Registers Addr Register Serial Interface ControlSerial Interface Control Registers Parallel Interface Standard Parallel Port Mode Extended Capabilities Port Mode Enhanced Parallel Port Mode Parallel Interface Programming Parallel Interface ConfigurationParallel Interface Configuration Registers Address Register Parallel Interface ControlParallel Interface Control Registers Pin Signal Function Parallel Interface ConnectorDB-25 Parallel Connector Pinout Keyboard Interface Operation KEYBOARD/POINTING Device Interface Command To-Keyboard Commands KEYBOARD/POINTING Device Interface Programming 3.1 8042 ConfigurationKeyboard Interface Configuration Registers Pointing Device Interface Operation Port 64h 3.2 8042 ControlPort 60h Value Command Description CPU Commands To Data KEYBOARD/POINTING Device Interface ConnectorKeyboard/Pointing Device Connector Pinout ICH2 USB USB Data Formats Endp USB Control USB ConfigurationUSB Interface Configuration Registers USB Programming USB Cable Length Data USB ConnectorUSB Connector Pinout USB Cable Data Functional Analysis TDA CD ROM Audio Controller Slot Description 3 AC97 Link BUSSync SD OUT Audio Codec Audio Control Audio ConfigurationAC’97 Audio Controller PCI Configuration Registers Audio Programming Paramemter Measurement Audio SpecificationsAudio Subsystem Specifications AOL Events Network SupportPCI VER .2 Support ALERT-ON-LAN Support Input/Output Interfaces SOS Remote System Alert SupportAOL/SOS Remote System Alert Events AUX Power Supply ASSEMBLY/CONTROLDistribution Range Min. Current Max Surge Power Supply AssemblyWatt Power Supply Assembly Specifications P/N System Board LED Indications Power ControlPower Button System State Pressed Power Button Results Wake-On-LAN Power LED IndicationsPower Management Event Wake Up Events RTN Power Distribution1 3.3/5/12 VDC Distribution Conn Pin VID1 VID2 VID3 VID4 LOW Voltage PRODUCTION/DISTRIBUTIONVID0 AGP PWR Rimm IDE I/F CD-ROM Signal DistributionSystem Board AOL/SOS Header P12 Power Button/LED Header P5CD ROM Audio Header P7 Bios ROM Bios ROM Num Lock Cap Lock Scroll Lock Boot Block CodesROM Flashing Upgrading \Flashi.exe ImageFilename BackgroundColor ForegroundColor Changeable Splash Screen Network Boot F12 Support Boot FunctionsBoot Device Order Visual Audible Meaning Memory Detection and ConfigurationBoot Error Codes Boot Error Codes Heading Option Description Setup UtilitySetup Utility Functions Multisector Transfers IDE ATA devices only Translation Mode IDE disks onlyRemovable Media Boot Translation Parameters IDE Disks only See the Desktop Management Guide for more CTRL+ALT+DEL Setup Utility Functions Setup Utility Functions Setup Utility Functions Client Management Functions INT15 Function ModeClient Management Functions ECX Input EAXOutput EBX System System ID ROM Family PnP ID Temperature StatusSystem ID and ROM Type Edid Retrieve Smart Hard Drive detects imminent failure Drive Fault PredictionPnP Bios Functions PNP Support Smbios Independent PM Support Power Management FunctionsSystem Timer IDE Hard Drive Timer Suspend Going to Sleep in Independent PMSystem Standby IDE Hard Drive Standby APM 1.2 Support Acpi Support APM Bios Function Description APM Bios Functions Staying Awake in APM System Suspend Going to Sleep in APMSystem/Hard Drive Standby USB Legacy Support Waking Up in APM This page is intentionally blank Beep/Keyboard LED Codes Error Messages and CodesBEEP/KEYBOARD LED Codes Table A-1 Table A-2 POWER-ON Self Test Post MessagesPower-On Self Test Post Messages Error Message Probable Cause Message Probable Cause System Error MessagesSystem Error Messages Table A-3 Table A-5 Memory Error MessagesKeyboard Error Messages Table A-4 Table A-7 Printer Error MessagesVideo Graphics Error Messages Table A-6 Table A-9 Diskette Drive Error MessagesSerial Interface Error Messages Table A-8 Table A-10 Modem Communications Error Messages Table A-12 System Status Error MessagesHard Drive Error Messages Table A-11 Table A-14 Table A-13 Network Interface Error Messages Audio Error Messages17 DVD/CD-ROM Error Messages Table A-19 Scsi Interface Error Messages 65xx-xx, 66xx-xxPointing Device Interface Error Messages Table A-18 12Compaq Personal Computers Ascii Character Set Dec Hex SymbolAscii Character SET Table B-1 Appendix B Ascii Character Set Appendix C Keyboard Keyboard Keystroke Processing Parameter Minimum Nominal Maximum 1 PS/2-TYPE Keyboard Transmissions USB-TYPE Keyboard Transmissions Standard Enhanced Keyboards Keyboard Layouts Figure C-6.National Windows 102W-Key Keyboard Key Positions Windows Enhanced Keyboards Figure C-8.8-Button Easy Access Keyboard Layout Easy Access Keyboards Special Single-Keystroke Functions Keys Windows Keystrokes Multi-Keystroke Functions Button # Description Default Function Easy Access Keystrokes Table C-1 Keyboard CommandsKeyboard-to-System Commands Scan Codes Keyboard Scan Codes Key Make / Break Codes Hex Pos ModeTable C-2 Key Make / Break Codes Hex Pos Table C-2. Keyboard Scan Codes 2B/AB 7E/FE Key Figure C-9.PS/2 Keyboard Cable Connector Male Connectors Sgram Nvidia TNT2 COMPAQ/NVIDIA TNT2 PRO AGP Graphics Card RAM DAC Bios ROMFunctional Description 2D/VGA Nvidia TNT2 Pro Graphics Display Modes Resolution Bits per pixel Color DepthDisplay Modes Table D-1 Table D-2 Power Management and ConsumptionMonitor Power Management Conditions Software Support Information SDA Monitor ConnectorDB-15 Monitor Connector Pinout Table D-3 6Compaq Personal Computers Sdram Nvidia Appendix E Compaq/NVIDIA GeForce2 GTS AGP Graphics Card Appendix E Compaq/NVIDIA GeForce2 GTS AGP Graphics Card Nvidia GeForce2 GTS Graphics Display Modes Table E-1 Table E-2 Table E-3 Table E-4 Video Feature ConnectorVideo In Connector Pinout Appendix F Compaq/Lucent V.90 56K PCI Modem COMPAQ/LUCENT V.90 56K PCI Modem DSP DAA Table F-1 Operating ParametersUart Transfer Rates Transmission Modes Programming ConnectorAPM Environment Acpi Environment Appendix G COMPAQ/ELSA Gloria Appendix G Compaq/ELSA GLoria II AGP Graphics Card Elsa GLoria II Graphics Display Modes Table G-1 Table G-2 Table G-3 Table G-4 RAM MGA Appendix G Compaq/Matrox Millennium G450 AGP Graphics Card MB Sdram Ramdac Matrox Millennium G450 Graphics Display Modes Table H-1 Table H-2 Table H-3 Video Feature Connector Network Interface Controller Adapters TX/RX PHY WOL BiosController Type Featured on VDC Wake UP Functions AOL Function Ipsec Function Power Management Support Control Registers ConfigurationAdapter Programming Control DES/3DES, Hmac SHA-1, MD5 Network ConnectorAdapter Specifications Adapter Specifications 8Compaq Personal Computers Sdram Nvidia NV11GL COMPAQ/NVIDIA QUADRO2 MXR AGP Graphics Card RAM DAC Sdram Nvidia Quadro2 MXR Graphics Display Modes Table J-1 Table J-2 Table F-3 6Compaq Personal Computers AOL/SOS LED Compaq PCI 10/100 Ethernet Adapter TX/RX GND VDCSMB CS AOL Function RSA Function Power Management Support Figure K-4.AOL/SOS Connector 7-pin Header 2 AOL/SOS Connector WOL Connector Smbus Connector Table K-1 Appendix L Compaq/Adaptec Scsi Host Adapter COMPAQ/ADAPTEC 29160N Scsi Host Adapter PCI Scsi Table L-2 Scsi Adapter Programming Scsi Adapter ConfigurationScsi Adapter Control Table L-1 Table L-3 Scsi ConnectorsExternal 50-PIN Ultra Scsi Connector External Ultra Scsi Connector Pinout Table L-4 Internal 50-PIN Ultra Scsi ConnectorInternal 50-Pin Ultra Scsi Connector Pinout Table L-5 Internal 68-PIN ULTRA160 Scsi ConnectorUltra160 Scsi Connector Pinout Dimm support Index Ipsec Environmental SpecificationsElectrical This page is intentionally blank