BCM RX945G User Manual

User’s ManualIntel® Core™2 Duo/ Pentium® D / Pentium® 4 / Celeron D® mATX Main BoardRX945GVer. 1.01

x*Specifications are subject to change without notice.RX945G specications summary BIOS features 4 Mb Flash ROM, AMI BIOS, PnP, WfM2.0, DMI2.0, SM

1Product introductionThis chapter describes the motherboard features and the new technologies it supports.

1-2 Chapter 1: Product introduction1.1 Welcome!Thank you for buying the RX945G motherboard!The motherboard delivers a host of new features and latest

RX945G 1-3Intel® 945G chipset The Intel® 945G graphics memory controller hub (GMCH) and the ICH7I/O controller hub provide the vital interfaces for

1-4 Chapter 1: Product introductionPCI Express™ interface The motherboard fully supports PCI Express, the latest I/O interconnect technology that spe

1-6 Chapter 1: Product introduction1.5 Motherboard overviewBefore you install the motherboard, study the conguration of your chassis to ensure that

RX945G 1-71.5.3 Motherboard layout

1-8 Chapter 1: Product introduction1.6.1 Installing the CPUTo install a CPU:1. Locate the CPU socket on the motherboard.1.6 Central Processing Unit

RX945G 1-93. Lift the load lever in the direction of the arrow to a 135º angle.4. Lift the load plate with your thumb and forenger to a 100º angle

1-10 Chapter 1: Product introductionThe CPU ts in only one correct orientation. DO NOT force the CPU into the socket to prevent bending the connector

iiContentsNotices ...vSafety information ...

RX945G 1-111.6.2 Installing the CPU heatsink and fanThe Intel® Core™2 Duo / Pentium® D / Pentium® 4 / Celeron® LGA775 processorrequires a specially d

1-12 Chapter 1: Product introductionDo not forget to connect the CPU fan connector! Hardware monitoring errors can occur if you fail to plug this conn

RX945G 1-131.6.3 Uninstalling the CPU heatsink and fanTo uninstall the CPU heatsink and fan:1. Disconnect the CPU fan cable from the connector on t

1-14 Chapter 1: Product introduction4. Remove the heatsink and fan assembly from the motherboard.5. Rotate each fastener clockwise to reset the orie

RX945G 1-151.7 System memory1.7.1 OverviewThe motherboard comes with four Double Data Rate 2 (DDR2) Dual Inline Memory Modules (DIMM) sockets.A DDR2

1-16 Chapter 1: Product introduction1.7.3 DDR2 Qualied Vendors ListThe following table lists the memory modules that have been tested and qualied f

RX945G 1-17DDR2 667 Qualied Vendors ListSide(s): SS - Single Sided DS - Double SidedDIMM Support:A - supports one module inserted into either sl

1-18 Chapter 1: Product introduction1.7.4 Installing a DIMMUnplug the power supply before adding or removing DIMMs or other system components. Failur

RX945G 1-191.8 Expansion slotsIn the future, you may need to install expansion cards. The following sub-sections describe the slots and the expansion

1-20 Chapter 1: Product introduction1.8.3 Interrupt assignmentsStandard interrupt assignmentsIRQ Standard Function0 System Timer1 Keyboar

iiiContents1.8.5 PCI Express x16 ... 1-211.9 Jumpers ...

RX945G 1-211.8.4 PCI slotsThe PCI slots support cards such as a LAN card, SCSI card, USB card, and other cards that comply with PCI specications. Th

1-22 Chapter 1: Product introduction1.9 Jumpers1. Clear RTC RAM (CLRTC)This jumper allows you to clear the Real Time Clock (RTC) RAM in CMOS. You ca

RX945G 1-234. Rear Speaker Out port (orange). This port connects the rear speakers on a 4-channel, 6-channel, or 8-channel audio conguration.5. Sid

1-24 Chapter 1: Product introduction10. USB 2.0 ports 3 and 4. These two 4-pin Universal Serial Bus (USB) ports are available for connecting USB 2.0

RX945G 1-251.10.2 Internal connectors1. Floppy disk drive connector (34-1 pin FLOPPY)This connector is for the provided oppy disk drive (FDD) signa

1-26 Chapter 1: Product introductionIDE connectorNOTE: Orient the red markings(usually zigzag) on the IDEribbon cable to PIN 1.PRI_IDEPIN 1

RX945G 1-273. ITE IDE connector (40-1 pin PRI_EIDE [red]) (Optional)Supported by the ITE8211F controller, this connector is for Ultra ATA 133/100/66

1-28 Chapter 1: Product introduction6. CPU, Power and Chassis fan connectors (4-pin CPU_FAN, 3-pin PWR_RAN, 3-pin CHA_FAN)The fan connectors support

RX945G 1-297. Digital Audio connector (4-1 pin SPDIF_OUT)This connector is for the S/PDIF audio module to allow digital sound output. Connect one end

1-30 Chapter 1: Product introduction9. ATX power connectors (24-pin EATXPWR and 4-pin ATX12V)These connectors are for ATX power supply plugs. The po

ivContents2.5.3 ACPI 2.0 Support [No] ...2-192.5.4 ACPI APIC Support [Enabled] ...

RX945G 1-3110. Optical drive audio connector (4-pin CD)This connector is for the 4-pin audio cable that connects to the audio connector at the back o

1-32 Chapter 1: Product introduction13. Chassis intrusion connector (4-1 pin CHASSIS)This connector is for a chassis-mounted intrusion detection sens

RX945G 1-33• Power/Soft-off button (Black 2-pin PWRSW) This connector is for the system power button. Pressing the power button turns the system ON or

2BIOS setupThis chapter tells how to change the system settings through the BIOS Setup menus. Detailed descriptions of the BIOS parameters are also

2-2 Chapter 2: BIOS setup2.1 Managing and updating your BIOS2.1.1 Creating a bootable oppy disk1. Do either one of the following to create a boota

RX945G 2-32.2 BIOS setup programThis motherboard supports a programmable rmware chip that you can update using the provided utility described in sec

2-4 Chapter 2: BIOS setupSystem Time [11:51:19] System Date [Thu 05/07/2004] Legacy Diskette A [1.44M, 3.5 in] Primary IDE Master :[ST32

RX945G 2-52.2.4 Menu itemsThe highlighted item on the menu bar displays the specic items for that menu. For example, selecting Main shows the Main

2-6 Chapter 2: BIOS setup2.3 Main menuWhen you enter the BIOS Setup program, the Main menu screen appears, giving you an overview of the basic system

RX945G 2-72.3.4 Primary, Third and Fourth IDE Master/SlaveWhile entering Setup, the BIOS automatically detects the presence of IDE devices. There is

vNoticesFederal Communications Commission StatementThis device complies with Part 15 of the FCC Rules. Operation is subject to the following two condi

2-8 Chapter 2: BIOS setupPIO Mode [Auto]Selects the PIO mode. Conguration options: [Auto] [0] [1] [2] [3] [4]DMA Mode [Auto]Selects the DMA mode. Co

RX945G 2-9Enhanced Mode Support On [S-ATA]The default setting S-ATA allows you to use native OS on Serial ATA and Parallel ATA ports. We recommend tha

2-10 Chapter 2: BIOS setup2.3.6 System InformationThis menu gives you an overview of the general system specications. The BIOS automatically detects

RX945G 2-112.4 Advanced menuThe Advanced menu items allow you to change the settings for the CPU and other system devices.Take caution when changing

2-12 Chapter 2: BIOS setupUSB Function [Enabled]Allows you to enable or disable the USB function. Conguration options: [Disabled] [Enabled] Legacy U

RX945G 2-132.4.2 ChipsetThe Chipset menu allows you to change the advanced chipset settings. Select an item then press <Enter> to display the su

2-14 Chapter 2: BIOS setup2.4.3 Onboard Devices CongurationCongure Win627EHG Super IO ChipsetQuick Resume Technology [Enabled]HD Audio Controlle

RX945G 2-15Parallel Port Address [378]Allows you to select the Parallel Port base addresses. Conguration options: [Disabled] [378] [278] [3BC]Parall

2-16 Chapter 2: BIOS setup2.4.4 PCI PnPThe PCI PnP menu items allow you to change the advanced settings for PCI/PnP devices. The menu includes settin

RX945G 2-17IRQ-xx assigned to [PCI Device]When set to [PCI Device], the specic IRQ is free for use of PCI/PnP devices. When set to [Reserved], the IR

viSafety informationElectrical safety• To prevent electrical shock hazard, disconnect the power cable from the electrical outlet before relocating the

2-18 Chapter 2: BIOS setup2.5.5 APM CongurationAPM CongurationPower Button Mode [On/Off]Restore on AC Power Loss [Power Off]Power On By RTC A

RX945G 2-19Power On By PCI Devices [Disabled]When set to [Enabled], this parameter allows you to turn on the system through a PCI LAN or modem card. T

2-20 Chapter 2: BIOS setup2.5.6 Hardware MonitorHardware MonitorCPU Temperature [51ºC/122.5ºF]MB Temperature [41ºC/105.5ºF]CPU Fan Speed (RPM)

RX945G 2-21VCORE Voltage, 3.3V Voltage, 5V Voltage, 12V VoltageThe onboard hardware monitor automatically detects the voltage output through the onboa

2-22 Chapter 2: BIOS setup2.6 Boot menuThe Boot menu items allow you to change the system boot options. Select an item then press <Enter> to di

RX945G 2-232.6.2 Boot Settings CongurationBoot Settings CongurationQuick Boot [Enabled]Full Screen Logo [Enabled]AddOn ROM Display Mode [For

2-24 Chapter 2: BIOS setupIf you forget your BIOS password, you can clear clear it by erasing the CMOS Real Time Clock (RTC) RAM. See section “2.6 Ju

RX945G 2-25After you have set a supervisor password, the other items appear to allow you to change other security settings. User Access Level (Full Ac

2-26 Chapter 2: BIOS setup If you attempt to exit the Setup program without saving your changes, the program prompts you with a message asking if you

RX945G 2-27Exit & Discard ChangesSelect this option only if you do not want to save the changes that you made to the Setup program. If you made c

viiAbout this guideThis user guide contains the information you need when installing and conguring the motherboard.How this guide is organizedThis ma

viiiTypographyBold text Indicates a menu or an item to selectItalics Used to emphasize a word or a phrase<Key> Keys enclosed in the less-t

ixRX945G specications summary(continued on the next page)CPU LGA775 socket for Intel® Core™2 Duo / Pentium® D / Pentium® 4 / Celeron® D processor Co