Intel Desktop Board D945PWM
Technical Product Specification
February 2006 Order Number: D44275-001US
The Intel Desktop Board D945PWM may contain design defects or errors known as errata that may cause the product to deviate from published specifications. Current characterized errata are documented in the Intel Desktop Board D945PWM Specification Update.

Revision History

Revision -001 Revision History First release of the Specification. Intel Desktop Board D945PWM Technical Product Date February 2006
This product specification applies to only the standard Intel Desktop Board D945PWM with BIOS identifier SN94510J.86A. Changes to this specification will be published in the Intel Desktop Board D945PWM Specification Update before being incorporated into a revision of this document.
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Preface

This Technical Product Specification (TPS) specifies the board layout, components, connectors, power and environmental requirements, and the BIOS for the Intel Desktop Board D945PWM. It describes the standard product and available manufacturing options.

Intended Audience

The TPS is intended to provide detailed, technical information about the Desktop Board D945PWM and its components to the vendors, system integrators, and other engineers and technicians who need this level of information. It is specifically not intended for general audiences.
What This Document Contains
Chapter Description A description of the hardware used on the Desktop Board D945PWM A map of the resources of the Desktop Board The features supported by the BIOS Setup program A description of the BIOS error messages, beep codes, and POST codes
Typographical Conventions
This section contains information about the conventions used in this specification. Not all of these symbols and abbreviations appear in all specifications of this type.
Notes, Cautions, and Warnings
Notes call attention to important information.

INTEGRATORS NOTES

Integrators notes are used to call attention to information that may be useful to system integrators.

CAUTION

Cautions are included to help you avoid damaging hardware or losing data.

WARNING

Warnings indicate conditions, which if not observed, can cause personal injury.
Intel Desktop Board D945PWM Technical Product Specification

Other Common Notation

# (NxnX) Used after a signal name to identify an active-low signal (such as USBP0#) When used in the description of a component, N indicates component type, xn are the relative coordinates of its location on the Desktop Board D945PWM, and X is the instance of the particular part at that general location. For example, J5J1 is a connector, located at 5J. It is the first connector in the 5J area. Gigabyte (1,073,741,824 bytes) Gigabytes per second Gigabits per second Kilobyte (1024 bytes) Kilobit (1024 bits) 1000 bits per second Megabyte (1,048,576 bytes) Megabytes per second Megabit (1,048,576 bits) Megabits per second An address or data value ending with a lowercase h indicates a hexadecimal value. Volts. Voltages are DC unless otherwise specified. This symbol is used to indicate third-party brands and names that are the property of their respective owners.

What This Chapter Contains
1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 Overview..... 10 Online Support.... 15 Processor.... 15 System Memory.... 16 Intel 945P Chipset.... 21 PCI Express Connectors.... 27 IEEE-1394a Connectors.... 27 Legacy I/O Controller.... 28 Audio Subsystem.... 29 LAN Subsystem.... 31 Hardware Management Subsystem.... 32 Power Management.... 34

1.1 Overview

1.1.1 Feature Summary

Feature Summary

ATX (12.00 inches by 9.60 inches [304.80 millimeters by 243.84 millimeters]) Support for an Intel Pentium 4 processor in an LGA775 socket with a 1066, 800, or 533 MHz system bus Four 240-pin DDR2 SDRAM Dual Inline Memory Module (DIMM) sockets Support for DDR2 667, DDR2 533, or DDRMHz DIMMs Support for up to 4 GB of system memory Intel 945P Chipset, consisting of: Intel 82945P Memory Controller Hub (MCH) Intel 82801G I/O Controller Hub (ICH7) Video Audio Legacy I/O Control USB IEEE-1394a Interface Peripheral Interfaces One PCI Express* x16 bus add-in card connector 8-channel (7.1) audio subsystem with five analog audio outputs and one S/PDIF optical digital audio output using the Sigmatel* 9220 audio codec Legacy I/O controller for diskette drive, serial, parallel, and PS/2* ports Support for USB 2.0 devices IEEE-1394a controller and three IEEE-1394a connectors (one back panel connector, two front-panel connectors) Eight USB ports One serial port One parallel port Four Serial ATA interfaces One Parallel ATA IDE interface with UDMA 33, ATA-66/100 support One diskette drive interface PS/2 keyboard and mouse ports
Table 1 summarizes the major features of the board.

Table 1.

Processor Memory

Form Factor

Chipset

LAN Support BIOS

10/100 Mbits/sec LAN subsystem using the Intel 82562GX Platform LAN Connect (PLC) device Intel BIOS (resident in the SPI Flash device) Support for Advanced Configuration and Power Interface (ACPI), Plug and Play, and SMBIOS Four PCI Conventional* bus connectors Two PCI Express x1 bus add-in card connectors One PCI Express x16 bus add-in card connector continued

Expansion Capabilities

Product Description

Feature Summary (continued)
Support for PCI Local Bus Specification Revision 2.3 Support for PCI Express Revision 1.0a Suspend to RAM support Wake on PCI, RS-232, front panel, PS/2 devices, and USB ports
Instantly Available PC Technology
Hardware Monitor Subsystem
Hardware monitoring and fan control ASIC Voltage sense to detect out of range power supply voltages Thermal sense to detect out of range thermal values Three fan connectors Three fan sense inputs used to monitor fan activity Fan speed control

Board Layout

Figure 1 shows the location of the major components.

B A C D E F G H I

FF EE DD CC BB AA

M N O P

OM18271
Figure 1. Board Components
Table 2 lists the components identified in Figure 1.

Table 2.

Board Components Shown in Figure 1
Description Auxiliary fan connector Speaker PCI Express x1 bus add-in card connectors [2] Audio codec Front panel audio connector Ethernet device PCI Conventional bus add-in card connectors [2] PCI Express x16 bus add-in card connector Back panel connectors +12V power connector (ATX12V) Rear chassis fan connector LGA775 processor socket Intel 82945P MCH Processor fan connector DIMM Channel A sockets [2] DIMM Channel B sockets [2] Legacy I/O controller Power connector Diskette drive connector Parallel ATE IDE connector Battery Front chassis fan connector BIOS Setup configuration jumper block Serial ATA connectors [4] Auxiliary front panel power LED connector Front panel connector Front panel USB connectors [2] Chassis intrusion connector Intel 82801G I/O Controller Hub (ICH7) SPI flash device IEEE-1394a controller Front panel IEEE-1394a connectors [2] PCI Conventional bus add-in card connectors [2]
Item/callout from Figure 1 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z AA BB CC DD EE FF GG

Block Diagram

Figure 2 is a block diagram of the major functional areas.
PCI Express x1 Interface PCI Express x1 Slot 1 USB PCI Express x1 Slot 2
Back Panel/Front Panel USB Ports Serial Port
Parallel ATA IDE Connector
Parallel ATA IDE Interface

Legacy I/O Controller

Parallel Port PS/2 Mouse PS/2 Keyboard

LGA775 Processor Socket

System Bus (1066/800/533 MHz)

LPC Bus

Diskette Drive Connector

DMI Interconnect

PCI Express x16 Interface PCI Express x16 Connector

Intel 945P Chipset

For information about The location of the Parallel ATA IDE connector Refer to Figure 16, page 50

1.5.2.2

Serial ATA Interfaces
The ICH7s Serial ATA controller offers four independent Serial ATA ports with a theoretical maximum transfer rate of 3 Gbits/sec per port. One device can be installed on each port for a maximum of four Serial ATA devices. A point-to-point interface is used for host to device connections, unlike Parallel ATA IDE which supports a master/slave configuration and two devices per channel. For compatibility, the underlying Serial ATA functionality is transparent to the operating system. The Serial ATA controller can operate in both legacy and native modes. In legacy mode, standard IDE I/O and IRQ resources are assigned (IRQ 14 and 15). In Native mode, standard PCI Conventional bus resource steering is used. Native mode is the preferred mode for configurations using the Windows* XP and Windows 2000 operating systems.
Many Serial ATA drives use new low-voltage power connectors and require adaptors or power supplies equipped with low-voltage power connectors. For more information, see: http://www.serialata.org/
For information about The location of the Serial ATA IDE connectors Refer to Figure 16, page 50
Real-Time Clock, CMOS SRAM, and Battery
A coin-cell battery (CR2032) powers the real-time clock and CMOS memory. When the computer is not plugged into a wall socket, the battery has an estimated life of three years. When the computer is plugged in, the standby current from the power supply extends the life of the battery. The clock is accurate to 13 minutes/year at 25 C with 3.3 VSB applied.
If the battery and AC power fail, custom defaults, if previously saved, will be loaded into CMOS RAM at power-on. When the voltage drops below a certain level, the BIOS Setup program settings stored in CMOS RAM (for example, the date and time) might not be accurate. Replace the battery with an equivalent one. Figure 1 on page 12 shows the location of the battery.
Risk of explosion if the battery is replaced with an incorrect type. Batteries should be recycled where possible. Disposal of used batteries must be in accordance with local environmental regulations.

PRECAUTION

Risque d'explosion si la pile usage est remplace par une pile de type incorrect. Les piles usages doivent tre recycles dans la mesure du possible. La mise au rebut des piles usages doit respecter les rglementations locales en vigueur en matire de protection de l'environnement.

FORHOLDSREGEL

Table 6. Power States and Targeted System Power
Sleeping States S0 working S1 Processor stopped S3 Suspend to RAM. Context saved to RAM. S4 Suspend to disk. Context saved to disk. S5 Soft off. Context not saved. Cold boot is required. No power to the system. Processor States C0 working C1 stop grant No power Device States D0 working state. D1, D2, D3 device specification specific. D3 no power except for wake-up logic. D3 no power except for wake-up logic. D3 no power except for wake-up logic. D3 no power for wake-up logic, except when provided by battery or external source. Targeted System Power (Note 1) Full power > 30 W 5 W < power < 52.5 W
Global States G0 working state G1 sleeping state G1 sleeping state G1 sleeping state G2/S5

Power < 5 W

(Note 2)

No power

G3 mechanical off AC power is disconnected from the computer.

Notes: 1. 2.

No power to the system. Service can be performed safely.
Total system power is dependent on the system configuration, including add-in boards and peripherals powered by the system chassis power supply. Dependent on the standby power consumption of wake-up devices used in the system.

1.12.1.2

One-Watt Standby
In 2001, the U.S. government issued an executive order requiring a reduction in power for appliances and personal computers. This board meets that requirement by operating at 1 W (or less) in S5 (Standby) mode. One-Watt operation applies only to the S5 state when the computer is turned off, but still connected to AC power. One-Watt operation does not apply to the S3 (Suspend to RAM) or S4 (Suspend to disk) states. Newer energy-efficient power supplies using less than 0.5 W (in Standby mode) may also be needed to achieve this goal.

1.12.1.3

Wake-up Devices and Events
Table 7 lists the devices or specific events that can wake the computer from specific states.

Table 7.

LAN Modem (back panel Serial Port A) PME# signal Power switch PS/2 devices RTC alarm USB WAKE# signal
from this state S1, S3, S4, S5 (Note) S1, S3 S1, S3, S4, S5 (Note) S1, S3, S4, S5 S1, S3 S1, S3, S4, S5 S1, S3 S1, S3, S4, S5
These devices/events can wake up the computer
For LAN and PME# signal, S5 is disabled by default in the BIOS Setup program. Setting this option to Power On will enable a wake-up event from LAN in the S5 state.
The use of these wake-up events from an ACPI state requires an operating system that provides full ACPI support. In addition, software, drivers, and peripherals must fully support ACPI wake events.

1.12.2

Hardware Support
Ensure that the power supply provides adequate +5 V standby current if LAN wake capabilities and Instantly Available PC technology features are used. Failure to do so can damage the power supply. The total amount of standby current required depends on the wake devices supported and manufacturing options. The board provides several power management hardware features, including: Power connector Fan connectors LAN wake capabilities Instantly Available PC technology Resume on Ring Wake from USB Wake from PS/2 keyboard PME# signal wake-up support WAKE# signal wake-up support

Table 12.

IRQ NMI 16 (Note 2) 17 (Note 2) 21 22

(Note 2) (Note 2)

Interrupts
System Resource I/O channel check Reserved, interval timer Reserved, keyboard buffer full Reserved, cascade interrupt from slave PIC User available COM1 (Note 1) User available Diskette drive LPT1 (Note 1) Real-time clock User available User available User available Onboard mouse port (if present, else user available) Reserved, math coprocessor Primary Parallel ATA/Serial ATA Legacy Mode (if present, else user available) Secondary Parallel ATA/Serial ATA Legacy Mode (if present, else user available) User available (through PIRQA) User available (through PIRQB) User available (through PIRQC) User available (through PIRQD) User available (through PIRQE) User available (through PIRQF) User available (through PIRQG) User available (through PIRQH)

20 (Note 2)

23 (Note 2)
Default, but can be changed to another IRQ. Available in APIC mode only.
2.7 PCI Conventional Interrupt Routing Map
This section describes interrupt sharing and how the interrupt signals are connected between the PCI Conventional bus connectors and onboard PCI Conventional devices. The PCI Conventional specification describes how interrupts can be shared between devices attached to the PCI Conventional bus. In most cases, the small amount of latency added by interrupt sharing does not affect the operation or throughput of the devices. In some special cases where maximum performance is needed from a device, a PCI Conventional device should not share an interrupt with other PCI Conventional devices. Use the following information to avoid sharing an interrupt with a PCI Conventional add-in card. PCI Conventional devices are categorized as follows to specify their interrupt grouping: INTA: By default, all add-in cards that require only one interrupt are in this category. For almost all cards that require more than one interrupt, the first interrupt on the card is also classified as INTA. INTB: Generally, the second interrupt on add-in cards that require two or more interrupts is classified as INTB. (This is not an absolute requirement.) INTC and INTD: Generally, a third interrupt on add-in cards is classified as INTC and a fourth interrupt is classified as INTD.
The ICH7 has eight Programmable Interrupt Request (PIRQ) input signals. All PCI Conventional interrupt sources either onboard or from a PCI Conventional add-in card connect to one of these PIRQ signals. Some PCI Conventional interrupt sources are electrically tied together on the board and therefore share the same interrupt. Table 13 shows an example of how the PIRQ signals are routed. For example, using Table 13 as a reference, assume an add-in card using INTA is plugged into PCI Conventional bus connector 3. In PCI bus connector 3, INTA is connected to PIRQB, which is already connected to the ICH7 audio controller. The add-in card in PCI Conventional bus connector 3 now shares an interrupt with the onboard interrupt source.

Reset Switch Connector [Purple]
Pins 5 and 7 [Purple] can be connected to a momentary single pole, single throw (SPST) type switch that is normally open. When the switch is closed, the board resets and runs the POST. 2.8.2.5.3 Power/Sleep LED Connector [Green]
Pins 2 and 4 [Green] can be connected to a one- or two-color LED. Table 26 shows the possible states for a one-color LED. Table 27 shows the possible states for a two-color LED.

Table 26.

LED State
States for a One-Color Power LED

Description

Off Steady Green
Power off/sleeping Running

Table 27.

States for a Two-Color Power LED
Off Steady Green Steady Yellow
Power off Running Sleeping
The colors listed in Table 26 and Table 27 are suggested colors only. Actual LED colors are product- or customer-specific. 2.8.2.5.4 Power Switch Connector [Red]
Pins 6 and 8 [Red] can be connected to a front panel momentary-contact power switch. The switch must pull the SW_ON# pin to ground for at least 50 ms to signal the power supply to switch on or off. (The time requirement is due to internal debounce circuitry on the board.) At least two seconds must pass before the power supply will recognize another on/off signal.

2.8.2.6

Front Panel USB Connectors
Figure 18 is a connection diagram for the front panel USB connectors.
The +5 V DC power on the USB connector is fused. Pins 1, 3, 5, and 7 comprise one USB port. Pins 2, 4, 6, and 8 comprise one USB port. Use only a front panel USB connector that conforms to the USB 2.0 specification for highspeed USB devices.

Power (+5 V DC)

One USB Port 1 2
Power (+5 V DC) D D+ Ground No Connect

OM15963

D D+ Ground Key (no pin)

One USB Port

Figure 18. Connection Diagram for Front Panel USB Connectors

2.8.2.7

Front Panel IEEE 1394a Connectors
Figure 19 is a connection diagram for the IEEE 1394a connectors.
Ground +12 V DC TPB Ground TPA

Key (no pin)

+12 V DC TPB Ground TPA+

OM17834

Figure 19. Connection Diagram for IEEE 1394a Connectors

Table 30. Fan Connector Current Capability
Maximum Available Current

Fan Connector

Processor fan Front chassis fan Rear chassis fan Auxiliary fan

3.0 A 1.5 A 1.5 A 3.0 A

2.11.4
Power Supply Considerations
The +5 V standby line for the power supply must be capable of providing adequate +5 V standby current. Failure to do so can damage the power supply. The total amount of standby current required depends on the wake devices supported and manufacturing options. System integrators should refer to the power usage values listed in Table 29 when selecting a power supply for use with the board. Additional power required will depend on configurations chosen by the integrator. The power supply must comply with the following recommendations found in the indicated sections of the ATX form factor specification. The potential relation between 3.3 VDC and +5 VDC power rails (Section 4.2) The current capability of the +5 VSB line (Section 4.2.1.2) All timing parameters (Section 4.2.1.3) All voltage tolerances (Section 4.2.2)
2.12 Thermal Considerations
A chassis with a maximum internal ambient temperature of 38 oC at the processor fan inlet is a requirement. Use a processor heatsink that provides omni-directional airflow (similar to the type shown in Figure 23) to maintain required airflow across the processor voltage regulator area.

OM16996

Figure 23. Processor Heatsink for Omni-directional Airflow
Failure to ensure appropriate airflow may result in reduced performance of both the processor and/or voltage regulator or, in some instances, damage to the board. For a list of chassis that have been tested with Intel desktop boards please refer to the following website: http://developer.intel.com/design/motherbd/cooling.htm All responsibility for determining the adequacy of any thermal or system design remains solely with the reader. Intel makes no warranties or representations that merely following the instructions presented in this document will result in a system with adequate thermal performance.

Japanese Kanji statement translation: this is a Class B product based on the standard of the Voluntary Control Council for Interference from Information Technology Equipment (VCCI). If this is used near a radio or television receiver in a domestic environment, it may cause radio interference. Install and use the equipment according to the instruction manual.
Korean Class B statement translation: this is household equipment that is certified to comply with EMC requirements. You may use this equipment in residential environments and other nonresidential environments.

2.15.5

Product Certification Markings (Board Level)
Product Certification Markings
Desktop Board D945PWM has the product certification markings shown in Table 36:

Table 36.

UL joint US/Canada Recognized Component mark. Includes adjacent UL file number for Intel desktop boards: E210882. FCC Declaration of Conformity logo mark for Class B equipment. Includes Intel name and D945PWM model designation.
CE mark. Declaring compliance to European Union (EU) EMC directive (89/336/EEC) and Low Voltage directive (73/23/EEC).
Australian Communications Authority (ACA) C-tick mark. Includes adjacent Intel supplier code number, N-232. Japan VCCI (Voluntary Control Council for Interference) mark.
S. Korea MIC (Ministry of Information and Communication) mark. For information about MIC certification, go to http://support.intel.com/support/motherboards/desktop/ Taiwan BSMI (Bureau of Standards, Metrology and Inspections) mark. Includes adjacent Intel company number, D33025. Printed wiring board manufacturers recognition mark. Consists of a unique UL recognized manufacturers logo, along with a flammability rating (solder side). V-0
3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 Introduction.... 75 BIOS Flash Memory Organization... 76 Resource Configuration.... 76 System Management BIOS (SMBIOS).. 77 Legacy USB Support.... 77 BIOS Updates.... 78 Boot Options.... 79 Adjusting Boot Speed.... 80 BIOS Security Features.... 81

3.1 Introduction

The boards use an Intel BIOS that is stored in the Serial Peripheral Interface Flash Memory (SPI Flash) and can be updated using a disk-based program. The SPI Flash contains the BIOS Setup program, POST, the PCI auto-configuration utility, and Plug and Play support. The BIOS displays a message during POST identifying the type of BIOS and a revision code. The initial production BIOSs are identified as SN94510J.86A. When the BIOS Setup configuration jumper is set to configure mode and the computer is poweredup, the BIOS compares the CPU version and the microcode version in the BIOS and reports if the two match. The BIOS Setup program can be used to view and change the BIOS settings for the computer. The BIOS Setup program is accessed by pressing the <F2> key after the Power-On Self-Test (POST) memory test begins and before the operating system boot begins. The menu bar is shown below.

Maintenance Main Advanced Security Power Boot Exit
The maintenance menu is displayed only when the Desktop Board is in configure mode. Section 2.9 on page 59 shows how to put the Desktop Board in configure mode.
Table 37 lists the BIOS Setup program menu features.
Table 37. BIOS Setup Program Menu Bar
Main Advanced Security Power Boot Exit

Maintenance

Clears passwords and displays processor information
Displays processor and memory configuration
Configures advanced features available through the chipset
Sets passwords and security features
Selects boot Configures options power management features and power supply controls
Saves or discards changes to Setup program options
Table 38 lists the function keys available for menu screens.
Table 38. BIOS Setup Program Function Keys
BIOS Setup Program Function Key
<> or <> <> or <> <Tab> <Enter> <F9> <F10> <Esc>
Selects a different menu screen (Moves the cursor left or right) Selects an item (Moves the cursor up or down) Selects a field (Not implemented) Executes command or selects the submenu Load the default configuration values for the current menu Save the current values and exits the BIOS Setup program Exits the menu
3.2 BIOS Flash Memory Organization
The Serial Peripheral Interface Flash Memory (SPI Flash) includes a 4 Mbit (512 KB) flash memory device.
3.3 Resource Configuration
3.3.1 PCI Autoconfiguration
The BIOS can automatically configure PCI devices. PCI devices may be onboard or add-in cards. Autoconfiguration lets a user insert or remove PCI cards without having to configure the system. When a user turns on the system after adding a PCI card, the BIOS automatically configures interrupts, the I/O space, and other system resources. Any interrupts set to Available in Setup are considered to be available for use by the add-in card.

PCI IDE Support

If you select Auto in the BIOS Setup program, the BIOS automatically sets up the PCI IDE connector with independent I/O channel support. The IDE interface supports hard drives up to ATA-66/100 and recognizes any ATAPI compliant devices, including CD-ROM drives, tape drives, and Ultra DMA drives. The interface also supports second-generation SATA drives. The BIOS determines the capabilities of each drive and configures them to optimize capacity and
Overview of BIOS Features
performance. To take advantage of the high capacities typically available today, hard drives are automatically configured for Logical Block Addressing (LBA) and to PIO Mode 3 or 4, depending on the capability of the drive. You can override the auto-configuration options by specifying manual configuration in the BIOS Setup program. To use ATA-66/100 features the following items are required: An ATA-66/100 peripheral device An ATA-66/100 compatible cable ATA-66/100 operating system device drivers

Do not connect an ATA device as a slave on the same IDE cable as an ATAPI master device. For example, do not connect an ATA hard drive as a slave to an ATAPI CD-ROM drive.
3.4 System Management BIOS (SMBIOS)
SMBIOS is a Desktop Management Interface (DMI) compliant method for managing computers in a managed network. The main component of SMBIOS is the Management Information Format (MIF) database, which contains information about the computing system and its components. Using SMBIOS, a system administrator can obtain the system types, capabilities, operational status, and installation dates for system components. The MIF database defines the data and provides the method for accessing this information. The BIOS enables applications such as third-party management software to use SMBIOS. The BIOS stores and reports the following SMBIOS information: BIOS data, such as the BIOS revision level Fixed-system data, such as peripherals, serial numbers, and asset tags Resource data, such as memory size, cache size, and processor speed Dynamic data, such as event detection and error logging
Non-Plug and Play operating systems, such as Windows NT*, require an additional interface for obtaining the SMBIOS information. The BIOS supports an SMBIOS table interface for such operating systems. Using this support, an SMBIOS service-level application running on a non-Plug and Play operating system can obtain the SMBIOS information.

3.5 Legacy USB Support

Legacy USB support enables USB devices to be used even when the operating systems USB drivers are not yet available. Legacy USB support is used to access the BIOS Setup program, and to install an operating system that supports USB. Legacy USB support operates as follows: 1. When you apply power to the computer, legacy support is disabled. 2. POST begins. 3. Legacy USB support is enabled by the BIOS allowing you to use a USB keyboard to enter and configure the BIOS Setup program and the maintenance menu.
4. POST completes. 5. The operating system loads. While the operating system is loading, USB keyboards and mice are recognized and may be used to configure the operating system. 6. After the operating system loads the USB drivers, all legacy and non-legacy USB devices are recognized by the operating system, and Legacy USB support from the BIOS is no longer used. To install an operating system that supports USB, follow the operating systems installation instructions.

3.6 BIOS Updates

The BIOS can be updated using either of the following utilities, which are available on the Intel World Wide Web site: Intel Express BIOS Update utility, which enables automated updating while in the Windows environment. Using this utility, the BIOS can be updated from a file on a hard disk, a 1.44 MB diskette, or a CD-ROM, or from the file location on the Web. Intel Flash Memory Update Utility, which requires creation of a boot diskette and manual rebooting of the system. Using this utility, the BIOS can be updated from a file on a 1.44 MB diskette (from a legacy diskette drive or an LS-120 diskette drive) or a CD-ROM.

Table 40 shows the effects of setting the supervisor password and user password. This table is for reference only and is not displayed on the screen.
Table 40. Supervisor and User Password Functions
User Mode Setup Options Password to Enter Setup Password During Boot
Supervisor Password Set Mode
Neither Supervisor only User only Supervisor and user set
Can change all options (Note) Can change all options N/A Can change all options
Can change all None options (Note) Can change a limited number of options Supervisor Password

None Supervisor

None None
Can change all Enter Password options Clear User Password Can change a limited number of options Supervisor Password Enter Password

User Supervisor or user

If no password is set, any user can change all Setup options.

4.1 Speaker

The board-mounted speaker provides audible error code (beep code) information during POST.
The location of the onboard speaker

Figure 1, page 12

4.2 BIOS Beep Codes
Whenever a recoverable error occurs during POST, the BIOS displays an error message describing the problem (see Table 41).

Table 41.

Beep Codes

Pattern Frequency

Memory error Thermal warning
Three long beeps Four alternating beeps: High tone, low tone, high tone, low tone
1280 Hz High tone: 2000 Hz Low tone: 1600 Hz

4.3 BIOS Error Messages

Table 42 lists the error messages and provides a brief description of each.
Table 42. BIOS Error Messages

Explanation

Error Message
CMOS Battery Low CMOS Checksum Bad Memory Size Decreased No Boot Device Available
The battery may be losing power. Replace the battery soon. The CMOS checksum is incorrect. CMOS memory may have been corrupted. Run Setup to reset values. Memory size has decreased since the last boot. If no memory was removed then memory may be bad. System did not find a device to boot.

4.4 Port 80h POST Codes

During the POST, the BIOS generates diagnostic progress codes (POST-codes) to I/O port 80h. If the POST fails, execution stops and the last POST code generated is left at port 80h. This code is useful for determining the point where an error occurred. Displaying the POST-codes requires a PCI bus add-in card, often called a POST card. The POST card can decode the port and display the contents on a medium such as a seven-segment display.
The POST card must be installed in PCI bus connector 1. The following tables provide information about the POST codes generated by the BIOS: Table 43 lists the Port 80h POST code ranges Table 44 lists the Port 80h POST codes themselves Table 45 lists the Port 80h POST sequence

Intel Desktop Board D945PWM Product Guide

Order Number: D44266-001

Revision History
Revision -001 Revision History First release of the Intel Desktop Board D945PWM Product Guide. Date January 2006
If an FCC declaration of conformity marking is present on the board, the following statement applies:
FCC Declaration of Conformity
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. For questions related to the EMC performance of this product, contact: Intel Corporation 5200 N.E. Elam Young Parkway Hillsboro, OR 97124 1-800-628-8686 This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna. Increase the separation between the equipment and the receiver. Connect the equipment to an outlet on a circuit other than the one to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. Any changes or modifications to the equipment not expressly approved by Intel Corporation could void the users authority to operate the equipment. Tested to comply with FCC standards for home or office use.
Canadian Department of Communications Compliance Statement
This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications. Le prsent appareil numerique nmet pas de bruits radiolectriques dpassant les limites applicables aux appareils numriques de la classe B prescrites dans le Rglement sur le broullage radiolectrique dict par le ministre des Communications du Canada.

Disclaimer

Information in this document is provided in connection with Intel products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Intels Terms and Conditions of Sale for such products, Intel assumes no liability whatsoever, and Intel disclaims any express or implied warranty, relating to sale and/or use of Intel products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. Intel products are not intended for use in medical, life saving, or life sustaining applications. Intel may make changes to specifications and product descriptions at any time, without notice. Desktop Board D945PWM may contain design defects or errors known as errata which may cause the product to deviate from published specifications. Current characterized errata are available on request. Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order. Copies of documents which have an ordering number and are referenced in this document, or other Intel literature, may be obtained from Intel Corporation by going to the World Wide Web site at: http://www.intel.com/ or by calling 1-800-548-4725. Intel, Pentium, and Celeron are registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries. * Other names and brands may be claimed as the property of others. Copyright 2006, Intel Corporation. All rights reserved.

Preface

This Product Guide gives information about board layout, component installation, BIOS update, and regulatory requirements for Intel Desktop Board D945PWM.

Intended Audience

The Product Guide is intended for technically qualified personnel. It is not intended for general audiences.
Use Only for Intended Applications
All Intel desktop boards are evaluated as Information Technology Equipment (I.T.E.) for use in personal computers (PC) for installation in homes, offices, schools, computer rooms, and similar locations. The suitability of this product for other PC or embedded non-PC applications or other environments, such as medical, industrial, alarm systems, test equipment, etc. may not be supported without further evaluation by Intel.

Information Layout

The chapters in this Product Guide are arranged as follows: 1 Desktop Board Features: a summary of product features 2 Installing and Replacing Desktop Board Components: instructions on how to install the desktop board and other hardware components 3 BIOS: instructions on how to update the BIOS A Error Messages and Indicators: information about BIOS error messages and beep codes B Regulatory Compliance: safety and EMC regulations, product certification

Conventions

The following conventions are used in this manual:

CAUTION

Cautions warn the user about how to prevent damage to hardware or loss of data.
Notes call attention to important information.

Terminology

The table below gives descriptions to some common terms used in the product guide.
Term GB GHz KB MB Mbit MHz Description Gigabyte (1,073,741,824 bytes) Gigahertz (one billion hertz) Kilobyte (1024 bytes) Megabyte (1,048,576 bytes) Megabit (1,048,576 bits) Megahertz (one million hertz)

Box Contents

Intel Desktop Board D945PWM NVIDIA* GeForce* 6200 LE Graphics Card I/O shield One ATA-66/100 cable Two locking Serial ATA cables One diskette drive cable Audio port covers Intel Express Installer Driver CD-ROM Intel Express Installer Software DVD One diskette with Intel Matrix Storage Raid Driver Quick Reference poster Configuration and battery caution statement label

B Regulatory Compliance

Safety Regulations.... 59 European Union Declaration of Conformity Statement.. 59 Product Ecology Statements.... 61 Lead Free Desktop Board.... 63 EMC Regulations.... 64 Product Certification Markings (Board Level).. 65

Figures

1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. Desktop Board D945PWM Components.. 11 LAN Connector LEDs.... 16 Location of Standby Power Indicator... 20 Installing the I/O Shield.... 26 Desktop Board D945PWM Mounting Screw Hole Locations.. 27 Lift Socket Lever.... 28 Lift the Load Plate and Dont Touch the Socket Contacts... 28 Remove the Protective Socket Cover.... 29 Remove the Processor from the Protective Processor Cover/Do Not Touch.. 29 Install Processor.... 30 Close the Load Plate.... 30 Connecting the Processor Fan Heat Sink Cable to the Processor Fan Connector. 31 Dual Configuration Example 1... 32 Dual Configuration Example 2... 32 Dual Configuration Example 3... 33 Installing a DIMM... 34 Inserting a PCI Express x16 Card.... 36 Connecting the IDE Cable.... 37 Connecting the Serial ATA Cable... 38 Internal Headers.... 39 Back Panel Audio Connectors... 42 Location of Fan Headers... 43 Connecting Power Supply Cables.... 44 Location of Other Connectors on Desktop Board D945PWM.. 45 Location of the BIOS Configuration Jumper.. 46 Removing the Battery.... 52 F2 Key.... 53

Tables

1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. Feature Summary.... 9 Desktop Board D945PWM Components.. 12 Power Supply Requirements... 13 Desktop Board D945PWM Memory Configurations.. 14 RJ-45 10/100 Ethernet LAN Connector LEDs... 17 Front Panel Audio Header Signal Names for Intel High Definition Audio. 40 AC 97 Audio Header Signal Names... 40 USB 2.0 Header Signal Names... 41 IEEE 1394a Header Signal Names... 41 Front Panel Header Signal Names... 41 Jumper Settings for the BIOS Setup Program Modes.. 46 Beep Codes.... 57 BIOS Error Messages.... 57 Safety Regulations.... 59 Lead Free Desktop Board.... 63 EMC Regulations... 64 Product Certification Markings... 65
This chapter briefly describes the main features of Intel Desktop Board D945PWM. Table 1 summarizes the major features of the desktop board.

Table 1.

Processor Main Memory

Feature Summary

ATX (12.00-inches by 9.60-inches) Support for an Intel processor in the LGA775 package Four 240-pin, 1.8 V SDRAM Dual Inline Memory Module (DIMM) sockets 667/533/400 MHz single or dual channel DDR2 SDRAM interface Designed to support up to 4 GB of system memory

NOTE: System resources (such as PCI and PCI Express*) require physical

Form Factor

memory address locations that reduce available memory addresses above 3 GB. This may result in less than 4 GB of memory being available to the operating system and applications. For the latest list of tested memory, refer to the Intel World Wide Web site at: http://support.intel.com/support/motherboards/desktop/ Chipset Intel 945P Express Chipset consisting of: Intel 82945P Memory Controller Hub (MCH) with Direct Media Interface Intel 82801GB I/O Controller Hub (ICH7) Serial Peripheral Interface (SPI) Flash or Firmware Hub (FWH) Audio Intel 945P Express Chipset Intel High Definition Audio interface SigmaTel* codec LAN Subsystem Expansion Capabilities 10/100 Ethernet controller with RJ-45 connector Four PCI bus add-in card connectors One PCI Express x16 connector Two PCI Express x1 connectors Peripheral Interfaces Up to eight Hi-Speed USB 2.0 ports: Four ports routed to the back panel Four ports routed to two USB headers One port routed to the back panel
Up to three IEEE 1394a ports: Two ports routed to two IEEE 1394a headers Four Serial ATA (SATA) channels (3.0 Gb/s), via the ICH7, one device per channel One IDE interface with ATA-66/100 support (two devices) One diskette drive interface One parallel port One serial port PS/2* keyboard and mouse ports continued
Feature Summary (continued)
Intel Platform Innovation Framework for extensible firmware interface 4 Mbit symmetrical flash memory Support for SMBIOS Intel Rapid BIOS Boot Intel Express BIOS Update

Power Management

Support for Advanced Configuration and Power Interface (ACPI) Suspend to RAM (STR) Wake on USB, PCI, PCI Express, PS/2, LAN, and front panel

Hardware Management

Hardware monitor with: Three fan sensing inputs used to monitor fan activity Remote diode temperature sensing Intel Precision Cooling Technology fan speed control Voltage sensing to detect out of range values
Related Links: For more information about Desktop Board D945PWM, including the Technical Product Specification (TPS), BIOS updates, and device drivers, go to: http://support.intel.com/support/motherboards/desktop/
Supported Operating Systems
The desktop board supports the following operating systems: Microsoft Windows* 2000 Microsoft Windows XP Professional Microsoft Windows XP Professional x64 Edition Microsoft Windows XP Home Microsoft Windows XP Media Center Edition 2005

LAN Subsystem

The LAN, with the Intel 82801GB (ICH7), provides the following functions: Support for 10/100 Ethernet LAN Support for RJ-45 connector with status indicator LEDs Programmable transit threshold Configurable EEPROM that contains the MAC address

LAN Subsystem Software

For LAN software and drivers, refer to the D945PWM link on Intels World Wide Web site at: http://support.intel.com/support/motherboards/desktop

RJ-45 LAN Connector LEDs

Two LEDs are built into the RJ-45 LAN port located on the back panel (see Figure 2).

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Figure 2. LAN Connector LEDs
Table 5 describes the LED states when the board is powered up and the 10/100/1000 Gigabit Ethernet LAN subsystem is operating.

Table 5.

LED Green
RJ-45 10/100 Ethernet LAN Connector LEDs
LED State Off On Blinking Indicates LAN link is not established LAN link is established LAN activity is occurring 10 Mbits/s data rate is selected 100 Mbits/s data rate is selected

Yellow

Off On (steady state)

Hi-Speed USB 2.0 Support

Computer systems that have an unshielded cable attached to a USB port might not meet FCC Class B requirements, even if no device or a low-speed USB device is attached to the cable. Use a shielded cable that meets the requirements for a full-speed USB device. The desktop board supports up to eight USB 2.0 ports via ICH7; four ports routed to the back panel and four routed to two internal USB 2.0 headers. USB 2.0 ports are backward compatible with USB 1.1 devices. USB 1.1 devices will function normally at USB 1.1 speeds. USB 2.0 support requires both an operating system and drivers that fully support USB 2.0 transfer rates. Disabling Hi-Speed USB in the BIOS reverts all USB 2.0 ports to USB 1.1 operation. This may be required to accommodate operating systems that do not support USB 2.0.

Enhanced IDE Interface

The ICH7s IDE interface handles the exchange of information between the processor and peripheral devices like hard disks, CD-ROM drives, and Iomega Zip* drives inside the computer. The interface supports: Up to two IDE devices (such as hard drives) ATAPI-style devices (such as CD-ROM drives) Older PIO Mode devices Ultra DMA-33 and ATA-66/100 protocols Laser Servo (LS-120) drives

Serial ATA

The desktop board supports four Serial ATA channels (3.0 Gb/s) via ICH7, connecting one device per channel.

Expandability

The desktop board supports the following: One PCI Express x16 add-in card Two PCI Express x1 add-in card Four PCI add-in cards Related Links: For information about installing the PCI Express x16 card, see page 36 in Chapter 2.

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Figure 3. Location of Standby Power Indicator
Related Links: For more information on standby current requirements for the desktop board, refer to the Technical Product Specification by going to the following link, finding the product, and selecting Product Documentation from the left-hand menu: http://support.intel.com/support/motherboards/desktop/

Wake from USB

Wake from USB requires the use of a USB peripheral that supports wake from USB. USB bus activity wakes the computer from an ACPI S1 or S3 state.
Wake from PS/2 Keyboard/Mouse
PS/2 keyboard/mouse activity wakes the computer from an ACPI S1 or S3 state.

PME# Wakeup Support

When the PME# signal on the PCI bus is asserted, the computer wakes from an ACPI S1, S3, or S5 state.

Speaker

A speaker is mounted on the desktop board. The speaker provides audible error code (beep code) information during the Power-On Self-Test (POST).

Battery

A battery on the desktop board keeps the values in CMOS RAM and the clock current when the computer is turned off. Go to page 48 for instructions on how to replace the battery.

Real-Time Clock

The desktop board has a time-of-day clock and 100-year calendar. The battery on the desktop board keeps the clock current when the computer is turned off.
This chapter tells you how to: Install the I/O shield Install and remove the desktop board Install and remove a processor and memory Install and remove a PCI Express x16 card Connect the IDE and Serial ATA cables Connect internal headers Set up flexible 6-channel audio with jack re-tasking Connect fans and power cables Locate other connectors Set the BIOS configuration jumper Clear passwords Replace the battery

Before You Begin

CAUTIONS
The procedures in this chapter assume familiarity with the general terminology associated with personal computers and with the safety practices and regulatory compliance required for using and modifying electronic equipment. Disconnect the computer from its power source and from any telecommunications links, networks, or modems before performing any of the procedures described in this chapter. Failure to disconnect power, telecommunications links, networks, or modems before you open the computer or perform any procedures can result in personal injury or equipment damage. Some circuitry on the board can continue to operate even though the front panel power button is off.
Refer to Appendix B for regulatory requirements.
Follow these guidelines before you begin: Always follow the steps in each procedure in the correct order. Set up a log to record information about your computer, such as model, serial numbers, installed options, and configuration information. Electrostatic discharge (ESD) can damage components. Perform the procedures described in this chapter only at an ESD workstation using an antistatic wrist strap and a conductive foam pad. If such a station is not available, you can provide some ESD protection by wearing an antistatic wrist strap and attaching it to a metal part of the computer chassis.

Installation Precautions

When you install and test the Intel desktop board, observe all warnings and cautions in the installation instructions. To avoid injury, be careful of: Sharp pins on connectors Sharp pins on printed circuit assemblies Rough edges and sharp corners on the chassis Hot components (like processors, voltage regulators, and heat sinks) Damage to wires that could cause a short circuit Observe all warnings and cautions that instruct you to refer computer servicing to qualified technical personnel.
Installation Instructions
Follow these guidelines to meet safety and regulatory requirements when installing this board. Read and adhere to all of these instructions and the instructions supplied with the chassis and associated modules. If the instructions for the chassis are inconsistent with these instructions or the instructions for associated modules, contact the suppliers technical support to find out how you can ensure that your computer meets safety and regulatory requirements. If you do not follow these instructions and the instructions provided by chassis and module suppliers, you increase safety risk and the possibility of noncompliance with regional laws and regulations.
Ensure Electromagnetic Compatibility (EMC) Compliance
Before computer integration, make sure that the power supply and other modules or peripherals, as applicable, have passed Class B EMC testing and are marked accordingly. Pay close attention to the following when reading the installation instructions for the host chassis, power supply, and other modules: Product certifications or lack of certifications External I/O cable shielding and filtering Mounting, grounding, and bonding requirements Keying connectors when mating the wrong connectors could be hazardous
Installing and Replacing Desktop Board Components
If the power supply and other modules or peripherals, as applicable, are not Class B EMC compliant before integration, then EMC testing may be required on a representative sample of the newly completed computer.
Chassis and Component Certifications
Ensure that the chassis and certain components; such as the power supply, peripheral drives, wiring, and cables; are components certified for the country or market where used. Agency certification marks on the product are proof of certification. Typical product certifications include: In Europe The CE marking signifies compliance with all applicable European requirements. If the chassis and other components are not properly CE marked, a suppliers Declaration of Conformity statement to the European EMC directive and Low Voltage directive (as applicable), should be obtained. Additionally, other directives, such as the Radio and Telecommunications Terminal Equipment (R&TTE) directive may also apply depending on product features. In the United States A certification mark by a Nationally Recognized Testing Laboratory (NRTL) such as UL, CSA, or ETL signifies compliance with safety requirements. Wiring and cables must also be UL listed or recognized and suitable for the intended use. The FCC Class B logo for home or office use signifies compliance with electromagnetic interference (EMI) requirements. In Canada A nationally recognized certification mark such as CSA or cUL signifies compliance with safety requirements. The Industry Canada statement at the front of this product guide demonstrates compliance with Canadian EMC regulations.

Prevent Power Supply Overload
Do not overload the power supply output. To avoid overloading the power supply, make sure that the calculated total current loads of all the modules within the computer is less than the output current rating of each of the power supplies output circuits.
Place Battery Marking CAUTION
Risk of explosion if the battery is replaced with an incorrect type. Batteries should be recycled where possible. Disposal of used batteries must be in accordance with local environmental regulations. There is insufficient space on this desktop board to provide instructions for replacing and disposing of the Lithium ion coin cell battery. For system safety certification, the above statement or equivalent statement is required to be permanently and legibly marked on the chassis near the battery. Related Links: For information about replacing the battery, go to page 48.
All Intel desktop boards are evaluated as Information Technology Equipment (I.T.E.) for use in personal computers (PC) for installation in homes, offices, schools, computer rooms, and similar locations. The suitability of this product for other PC or embedded non-PC applications or other environments, such as medical, industrial, alarm systems, test equipment, etc., may not be supported without further evaluation by Intel. Related Links: For information about regulatory compliance, go to Appendix B on page 59.
Installing the I/O Shield
The desktop board comes with an I/O shield. When installed in the chassis, the shield blocks radio frequency transmissions, protects internal components from dust and foreign objects, and promotes correct airflow within the chassis. Install the I/O shield before installing the desktop board in the chassis. Place the shield inside the chassis as shown in Figure 4. Press the shield into place so that it fits tightly and securely. If the shield doesnt fit, obtain a properly-sized shield from the chassis supplier.

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Figure 4. Installing the I/O Shield
Installing and Removing the Desktop Board
Only qualified technical personnel should do this procedure. Disconnect the computer from its power source before performing the procedures described here. Failure to disconnect the power before you open the computer can result in personal injury or equipment damage. Refer to your chassis manual for instructions on installing and removing the desktop board. Figure 5 shows the location of the 11 mounting screw holes for Desktop Board D945PWM.

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Figure 5. Desktop Board D945PWM Mounting Screw Hole Locations
Installing and Removing a Processor

Instructions on how to install the processor to the desktop board are given below.
Installing a Processor CAUTION
Before installing or removing the processor, make sure the AC power has been removed by unplugging the power cord from the computer; the standby power LED should not be lit (see Figure 3 on page 20). Failure to do so could damage the processor and the board. To install a processor, follow these instructions: 1. Observe the precautions in "Before You Begin" on page 23. 2. Open the socket lever by pushing the lever down and away from the socket (see Figure 6, A and B).

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Figure 6. Lift Socket Lever
3. Lift the load plate. Do not touch the socket contacts (see Figure 7, C and D).

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Figure 7. Lift the Load Plate and Dont Touch the Socket Contacts
4. Remove the plastic protective socket cover from the load plate (see Figure 8, E). Do not discard the protective socket cover. Always replace the socket cover if the processor is removed from the socket.

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Figure 8. Remove the Protective Socket Cover
5. Remove the processor from the protective processor cover. Hold the processor only at the edges, being careful not to touch the bottom of the processor (see Figure 9). Do not discard the protective processor cover. Always replace the processor back to the package if the processor is removed from the socket.

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Figure 9. Remove the Processor from the Protective Processor Cover/Do Not Touch
6. Hold the processor with your thumb and index fingers oriented as shown in Figure 10. Make sure fingers align to the socket cutouts (see Figure 10, F). Align notches (see Figure 10, G) with the socket see (Figure 10, H). Lower the processor straight down without tilting or sliding the processor in the socket.

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Figure 10. Install Processor
7. While pressing down on the load plate (Figure 11, I), close and engage the socket lever (Figure 11, J).

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Figure 11. Close the Load Plate
Installing the Processor Fan Heat Sink
Desktop Board D945PWM has an integrated processor fan heat sink retention mechanism (RM). For instructions on how to attach the processor fan heat sink to the integrated processor fan heat sink RM, refer to the boxed processor manual or the Intel World Wide Web site at: The Boxed Intel Pentium 4 Processor in the 775-Land Package
Connecting the Processor Fan Heat Sink Cable
Connect the processor fan heat sink cable to the 4-pin processor fan connector (see Figure 12).

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Figure 12. Connecting the Processor Fan Heat Sink Cable to the Processor Fan Connector

Removing the Processor

For instructions on how to remove the processor fan heat sink and processor, refer to the processor installation manual or the Intel World Wide Web site at: The Boxed Intel Pentium 4 Processor in the 775-Land Package
Installing and Removing Memory
To be fully compliant with all applicable Intel SDRAM memory specifications, the board requires DIMMs that support the Serial Presence Detect (SPD) data structure. You can access the PC Serial Presence Detect Specification at: http://www.intel.com/technology/memory/ddr/specs/dda18c32_64_128x72ag_a.pdf The desktop board has four 240-pin DDR2 DIMM sockets arranged as DIMM 0 (blue) and DIMM 1 (black) in both Channel A and Channel B.
Guidelines for Dual Channel Memory Configuration
Before installing DIMMs, read and follow these guidelines for dual channel configuration.

Two or Four DIMMs

Install a matched pair of DIMMs equal in speed and size in DIMM 0 (blue) of both channels A and B (see Figure 13).
Channel A 1 GB, 533 MHz Channel B 1 GB, 533 MHz DIMM 0 DIMM 1 DIMM 0 DIMM 1
Figure 13. Dual Configuration Example 1
If additional memory is to be used, install another matched pair of DIMMs in DIMM 1 (black) in both channels A and B (see Figure 14).
Channel A 256 MB, 533 MHz 512 MB, 533 MHz Channel B 256 MB, 533 MHz 512 MB, 533 MHz DIMM 0 DIMM 1 DIMM 0 DIMM 1
Figure 14. Dual Configuration Example 2

Three DIMMs

Install a matched pair of DIMMs equal in speed and size in DIMM 0 (blue) and DIMM 1 (black) of channel A. Install a DIMM equal in speed and total size of the DIMMs installed in channel A in either DIMM 0 or DIMM 1 of channel B (see Figure 15).
Channel A 256 MB, 533 MHz 256 MB, 533 MHz Channel B 512 MB, 533 MHz DIMM 0 DIMM 1 DIMM 0 DIMM 1
Figure 15. Dual Configuration Example 3
All other memory configurations will result in single channel memory operation.

Installing DIMMs

Install memory in the DIMM sockets prior to installing a PCI Express video card to avoid interference with the memory retention mechanism. 1. Observe the precautions in "Before You Begin" on page 23. 2. Turn off all peripheral devices connected to the computer. Turn off the computer and disconnect the AC power cord. 3. Remove the computers cover and locate the DIMM sockets (see Figure 16).

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Figure 16. Installing a DIMM
4. Remove the PCI Express video card if it interferes with the DIMM retaining clips from being easily opened and closed. 5. Make sure the clips at either end of the DIMM socket(s) are pushed outward to the open position. 6. Holding the DIMM by the edges, remove it from its anti-static package. 7. Position the DIMM above the socket. Align the small notch at the bottom edge of the DIMM with the keys in the socket (see inset in Figure 16). 8. Insert the bottom edge of the DIMM into the socket. 9. When the DIMM is inserted, push down on the top edge of the DIMM until the retaining clips snap into place. Make sure the clips are firmly in place. 10. Reinstall the PCI Express card if it was removed prior to installing the DIMMs. 11. Replace the computers cover and reconnect the AC power cord.

Figure 21 shows the available configurable audio ports. The audio ports are configurable through the SigmaTel audio driver. After installing the SigmaTel audio driver, the multi-channel audio feature can be enabled.

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Description Surround left/right channel audio out/retasking jack Center channel and LFE (subwoofer) audio out/retasking jack Optical digital line out Audio line in/retasking jack Front left/right channel audio out/2-channel audio out/retasking jack Mic in/retasking jack
Figure 21. Back Panel Audio Connectors
Connecting Fan and Power Cables

Connecting Fan Cables

Figure 22 shows the location of the fan headers. Connect the processors fan heat sink cable to the 4-pin processor fan header on the board. Connect chassis fan cables to the 3-pin fan headers.

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Figure 22. Location of Fan Headers
Connecting Power Supply Cables CAUTION
Failure to use the appropriate power supply and/or not connecting the 12 V (2x2) power connector to the desktop board may result in damage to the board or the system may not function properly. See Table 3 on page 13 for power supply requirements. Figure 23 shows the location of the power supply connectors.

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Figure 23. Connecting Power Supply Cables
1. Observe the precautions in "Before You Begin" on page 23. 2. Connect the main power supply cable to the 2x12 connector. 3. Connect the 12 V processor core voltage power supply cable to the 2x2 connector.

Other Connectors

Figure 24 shows the location of the PCI add-in card, PCI Express 1x, and diskette drive connectors.

A B C D E F

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Item A B C D E F G

Description PCI bus add-in card connector 4 PCI bus add-in card connector 3 PCI Express x1 connector 2 PCI Express x1 connector 1 PCI bus add-in card connector 2 PCI bus add-in card connector 1 Diskette drive connector
Figure 24. Location of Other Connectors on Desktop Board D945PWM
Setting the BIOS Configuration Jumper Block
Always turn off the power and unplug the power cord from the computer before changing the jumper. Moving the jumper with the power on may result in unreliable computer operation. Figure 25 shows the location of the desktop boards BIOS configuration jumper.

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Figure 25. Location of the BIOS Configuration Jumper
The three-pin BIOS jumper enables all board configurations to be done in BIOS Setup. Table 11 shows the jumper settings for the Setup program modes.
Table 11. Jumper Settings for the BIOS Setup Program Modes

Normal (default) (1-2)

Jumper Setting

Description

The BIOS uses the current configuration and passwords for booting.
After the Power-On Self-Test (POST) runs, the BIOS displays the Maintenance Menu. Use this menu to clear passwords.

The BIOS recovers data from a recovery diskette in the event of a failed BIOS update.

Configure (2-3)

Recovery (None)

Clearing Passwords

This procedure assumes that the board is installed in the computer and the configuration jumper block is set to normal mode. 1. Observe the precautions in "Before You Begin" on page 23. 2. Turn off all peripheral devices connected to the computer. Turn off the computer. Disconnect the computers power cord from the AC power source (wall outlet or power adapter). 3. Remove the computer cover. 4. Find the configuration jumper block (see Figure 25). 5. Place the jumper on pins 2-3 as shown below.
6. Replace the cover, plug in the computer, turn on the computer, and allow it to boot. 7. The computer starts the Setup program. Setup displays the Maintenance menu. 8. Use the arrow keys to select Clear Passwords. Press <Enter> and Setup displays a pop-up screen requesting that you confirm clearing the password. Select Yes and press <Enter>. Setup displays the maintenance menu again. 9. Press <F10> to save the current values and exit Setup. 10. Turn off the computer. Disconnect the computers power cord from the AC power source. 11. Remove the computer cover. 12. To restore normal operation, place the jumper on pins 1-2 as shown below.
13. Replace the cover, plug in the computer, and turn on the computer.

Replacing the Battery

A coin-cell battery (CR2032) powers the real-time clock and CMOS memory. When the computer is not plugged into a wall socket, the battery has an estimated life of three years. When the computer is plugged in, the standby current from the power supply extends the life of the battery. The clock is accurate to 13 minutes/year at 25 C with 3.3 VSB applied. When the voltage drops below a certain level, the BIOS Setup program settings stored in CMOS RAM (for example, the date and time) might not be accurate. Replace the battery with an equivalent one. Figure 26 on page 52 shows the location of the battery.
Risk of explosion if the battery is replaced with an incorrect type. Batteries should be recycled where possible. Disposal of used batteries must be in accordance with local environmental regulations.

PRCAUTION

Risque d'explosion si la pile usage est remplace par une pile de type incorrect. Les piles usages doivent tre recycles dans la mesure du possible. La mise au rebut des piles usages doit respecter les rglementations locales en vigueur en matire de protection de l'environnement.

FORHOLDSREGEL

Eksplosionsfare, hvis batteriet erstattes med et batteri af en forkert type. Batterier br om muligt genbruges. Bortskaffelse af brugte batterier br foreg i overensstemmelse med gldende miljlovgivning.
Det kan oppst eksplosjonsfare hvis batteriet skiftes ut med feil type. Brukte batterier br kastes i henhold til gjeldende miljlovgivning.

11. Leave the update diskette in drive A, replace the computer cover, and connect the computers power cord. 12. Turn on the computer and continue with the BIOS update.
Desktop Board D945PWM reports POST errors in two ways: By sounding a beep code By displaying an error message on the monitor

BIOS Beep Codes

The BIOS also issues a beep code (one long tone followed by two short tones) during POST if the video configuration fails (a faulty video card or no card installed) or if an external ROM module does not properly checksum to zero. Table 12 lists the BIOS codes.

Table 12.

Beep 3 Siren

Beep Codes

Description No memory CPU overheat (on reboot)

BIOS Error Messages

When a recoverable error occurs during the POST, the BIOS displays an error message describing the problem. Table 13 gives an explanation of the BIOS error messages.
Table 13. BIOS Error Messages
Explanation CPU was previously shutdown due to a thermal event (overheating). The firmware has detected that a Multi-Bit ECC Error occurred. The firmware has detected that a Single-Bit ECC Error occurred. The firmware has detected that a CMOS battery failure occurred. The firmware has detected that a CMOS Checksum Error occurred. The firmware has detected that the system date/time has not been set. The firmware has detected that the system memory has decreased. The system chassis was opened. SERIAL PRESENCE DETECT (SPD) device data missing or inconclusive. Properly programmed SPD device data is required for reliable operation. DDRMHz memory assumed at slowest timings. The installed amount of memory in Channel A is not equal to the amount of memory in Channel B. Maximum memory performance is achieved with equal amounts of memory installed in each channel.
Error Message PROCESSOR_THERMAL_TRIP_ERROR MULTI_BIT_ECC_ERROR SINGLE_BIT_ECC_ERROR CMOS_BATTERY_ERROR CMOS_CHECKSUM_ERROR CMOS_TIMER_ERROR MEMORY_SIZE_DECREASE_ERROR INTRUDER_DETECTION_ERROR SPD_TOLER_ERROR

MEM_OPTIMAL_ERROR

This appendix contains the following regulatory compliance information for desktop board D945PWM: Safety regulations European Union Declaration of Conformity statement Product Ecology statements Electromagnetic Compatibility (EMC) regulations Product certification markings

Safety Regulations