Serial Interface, DB-9 Serial Connector Pinout | HP 8000 tower

5.3Serial Interface

Input/Output Interfaces

5.3Serial Interface

Systems covered in this guide may include one RS-232-C type serial interface to transmit and receive asynchronous serial data with external devices. Some systems may allow the installation of a second serial interface through an optional bracket/cable assembly that attaches to header P52 on the system board. The serial interface function is provided by the super I/O controller component that includes two NS16C550-compatible UARTs.

The UART supports the standard baud rates up through 115200, and also special high speed rates of 239400 and 460800 baud. The baud rate of the UART is typically set to match the capability of the connected device. While most baud rates may be set at runtime, baud rates 230400 and 460800 must be set during the configuration phase.

The serial interface uses a DB-9 connector as shown in the following figure with the pinout listed in Table 5-4.

Figure 5-3. DB-9 Serial Interface Connector (male, as viewed from rear of chassis)

Table 5-2.

DB-9 Serial Connector Pinout

Pin	Signal	Description	Pin	Signal	Description

1	CD	Carrier Detect	6	DSR	Data Set Ready

2	RX Data	Receive Data	7	RTS	Request To Send

3	TX Data	Transmit Data	8	CTS	Clear To Send

4	DTR	Data Terminal Ready	9	RI	Ring Indicator

5	GND	Ground	--	--	--

The standard RS-232-C limitation of 50 feet (or less) of cable between the DTE (computer) and DCE (modem) should be followed to minimize transmission errors. Higher baud rates may require shorter cables.

5-4

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Technical Reference Guide

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HP 8000 tower manual Serial Interface, DB-9 Serial Connector Pinout

Contents

Document Part Number Technical Reference GuideHP Compaq 8000 Elite Series Business Desktop Computers December Technical Reference Guide HP Compaq 8000 Elite Series Business Desktop ComputersFirst Edition December Document Part Number Contents 1 Introduction2 System Overview 3 Processor/Memory Subsystem 4 System Support5 Input/Output Interfaces 7 Power and Signal Distribution 6 Integrated Graphics Subsystem 8 SYSTEM BIOS A Error Messages and Codes Index 1.2 Additional Information Sources Introduction1.1 About this Guide 1.1.1 Online Viewing 1.4.1 Special Notices 1.3 Serial Number1.4 Notational Conventions 1.4.2 Values Acronym or 1.5 Common Acronyms and AbbreviationsAcronyms and Abbreviations Abbreviation Table 1-1 Continued Acronym or Table 1-1 ContinuedAcronyms and Abbreviations Abbreviation Acronym or Table 1-1 ContinuedAcronyms and Abbreviations Abbreviation Acronym or Table 1-1 ContinuedAcronyms and Abbreviations Abbreviation Acronym or Table 1-1 ContinuedAcronyms and Abbreviations Abbreviation Acronym or 1-10 System Overview 2.1 Introduction 2.2 Features Feature Differences by Form Factor USDT 2.3 System Architecture Architectural Differences by Form Factor System Overview 2.3.1 Intel Processor Support 2.3.2 ChipsetChipset Components and Functionality 2.3.3 Support Components 2.3.4 System MemorySupport Component Functions 2.3.7 Universal Serial Bus Interface 2.3.5 Mass Storage2.3.6 Serial Interface 2.3.8 Network Interface Controller 2.3.9 Graphics Subsystem 2.3.10 Audio SubsystemIntegrated Graphics Subsystem Statistics 2.4 Specifications 2.3.11 HP ProtectTools Embedded SecurityEnvironmental Specifications Factory Configuration Power Supply Electrical Specifications Physical Specifications 2-12 Processor/Memory Subsystem 3.1 Introduction 3.2 Intel Processors 3.2.1 Intel Processor Overview 3.2.2 Processor Changing/Upgrading Supported Processors partial listing 3.3 Memory Subsystem 3.3.1 Memory Upgrading 3.3.2 Memory Mapping and Pre-allocationMemory Socket Loading Figure 3-2. System Memory Map for maximum of 8 gigabytes Expansion AreaBase Memory 4.2 PCI Bus Overview System Support4.1 Introduction 4.2.1 PCI 2.3 Bus Operation System Support PCI Component Configuration AccessWired to PCI Bus Transaction Protocol Layer 4.2.2 PCI Express Bus OperationSoftware/Driver Layer PCI Bus Mastering Devices 4.2.4 PCI Interrupts 4.2.5 PCI Power Management Support4.2.3 Option ROM Mapping Link Layer PCI 2.3 Bus Connector Pinout 4.2.6 PCI ConnectorsPCI 2.3 Connector Figure 4-2. 32-bit, 5.0-volt PCI 2.3 Bus Connector PCIe Connectors PCIe Bus Connector PinoutFigure 4-3. PCIe Bus Connectors 8259 Mode 4.3 System Resources4.3.1 Interrupts APIC Mode 4.3.2 Direct Memory Access PCI Interrupt Distribution 4.4 Real-Time Clock and Configuration Memory 4.4.1 Clearing CMOS 4.5.1 Security Functions 4.5 System Management4.4.2 Standard CMOS Locations Configuration Memory CMOS Map Cable Lock Provision Power-On / Setup PasswordSetup Password I/O Interface Security 4.5.2 Power Management Smart Cover Lock OptionalACPI Wake-Up Events 4.5.3 System Status 4.5.4 Thermal Sensing and CoolingSystem Operational Status LED Indications 4.6 Register Map and Miscellaneous Functions 4.6.1 System I/O Map System I/O Map I/O PortFunction 4.6.2 GPIO Functions ICH10 FunctionsSIO Controller Functions Input/Output Interfaces 5.1 Introduction 5.2 SATA/eSATA Interfaces 5.2.1 SATA interface 5.2.2 eSATA interface 5.3 Serial Interface DB-9 Serial Connector Pinout 5.4.2 Enhanced Parallel Port Mode 5.4 Parallel Interface Support5.4.1 Standard Parallel Port Mode 5.4.3 Extended Capabilities Port Mode 5.4.4 Parallel Interface Connector DB-25 Parallel Connector Pinoute w q - 9 8 7 6 5 4 3 2 1 g f d s a p o i u y t r 5.5 Keyboard/Pointing Device Interface 5.5.1 Keyboard Interface Operation 5.5.3 Keyboard/Pointing Device Interface Connector 5.5.2 Pointing Device Interface OperationKeyboard/Pointing Device Connector Pinout 5.6.1 USB Connector 5.6 Universal Serial Bus Interface USB Cable Length Data 5.6.2 USB Cable DataUSB Connector Pinout USB Color Code 5.7 Audio Subsystem Figure 5-8. Audio Subsystem Functional Block Diagram 5.7.1 HD Audio Controller 5.7.2 HD Audio Link Bus5.7.3 Audio Multistreaming 5.7.4 Audio Specifications The specifications for the HD Audio subsystem are listed in TableHD Audio Subsystem Specifications 5.8 Network Interface Controller 5.8.3 Power Management Support 5.8.1 Wake-On-LAN Support5.8.2 Alert Standard Format Support 5.8.4 NIC Connector 5.8.5 NIC SpecificationsTable 5-11. NIC Specifications Integrated Graphics Subsystem 6.1 Introduction 6.2 Functional Description SDRAM Installed GMA 4500 Memory AllocationMaximum Memory Allocation 6.3 Display Modes 6.4 Upgrading 6.5 Monitor Connectors 6.5.1 Analog Monitor Connector 6.5.2 DisplayPort Connector Figure 6-3. DisplayPort Connector, as viewed from rear of chassis Integrated Graphics Subsystem Power and Signal Distribution 7.2 USDT Power Distribution7.1 Introduction USDT 135-Watt Power Supply Unit Specifications 7.3 SFF/CMT Power DistributionTable 7-1 lists the specifications of the external supply Figure 7-2. SFF/CMT Power Distribution and Cabling, Block Diagram SFF 240-Watt Power Supply Unit Specifications CMT 320-Watt Power Supply Unit Specifications 7.4 Power Control 7.4.1 Power Button Power failure power supply is overloaded. Check storage Power LED IndicationsPower LED Pre-video memory error. Incompatible or incorrectly seated Power Management Event 7.5 Power Management7.4.2 Wake Up Events Wake-On-LAN Power System Power StatesPower State Designator 7.6 Signal DistributionSystem Board Connector, Indicator, and Switch Designations Component function Figure 7-5 shows pinouts of headers used on the sytem boards Table 7-7. ContinuedFigure 7-3. System Board Header Pinouts 7-10 System BIOS 8.1 Introduction 8.2 ROM Flashing 8.2.1 Upgrading8.2.2 Changeable Splash Screen 8.3.2 Network Boot F12 Support 8.3 Boot Functions8.3.1 Boot Device Order 8.3.3 Memory Detection and Configuration 8.3.4 Boot Error Codes 8.4 Client Management Functions 8.4.1 System ID and ROM Type 8.4.2 Temperature StatusSystem ID Numbers 8.5 SMBIOS SMBIOS Functions 8.6 USB Legacy Support 8.7 Management Engine Functions Error Messages and Codes A.2 Beep/Power LED CodesA.1 Introduction A.3 Power-On Self Test POST Messages Error Messages and Codes 1794--Inaccessible device attached to SATA Power-On Self Test POST MessagesError Message 1796-SATA Cabling Error 1801-Microcode Patch Error A.4 System Error Messages Error Messages and Codes A.5 Memory Error Messages Memory Error MessagesTable A-4 Table A-4. Continued A.6 Keyboard Error MessagesMemory Error Messages Message Int. test, LpBk. test., and data register failed A.7 Printer Error MessagesA.8 Video Graphics Error Messages Int. test, LpBk. test., and cntrl. register failed A.9 Diskette Drive Error Messages A.10 Serial Interface Error Messages Table A-9 Serial Interface Error Messages A.11 Modem Communications Error Messages Table A-10 Modem Communications Error Messages A.12 System Status Error Messages A.13 Hard Drive Error Messages Cntlr. failed to deallocate bad sectors xx = 00, Hard drive ID test xx = 01, Hard drive format test A.14 Hard Drive Error Messages EGA Mono. graphics mode test failed A.15 Video Graphics Error MessagesA.16 Audio Error Messages Lightpen graphics test failed, no resp A.17 DVD/CD-ROM Error Messages A.18 Network Interface Error Messages A.19 SCSI Interface Error Messages 65xx-xx, 66xx-xx MessageProbable Cause A.20 Pointing Device Interface Error Messages 8601-xx A-20 Index Numerics