MX945GSE Intel® Atom N270 CPU with 945GSE/ICH7M Chipsets Mini ITX Motherboard User’s Manual v1.1 BCM Advanced Research www.bcmcom.
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This manual is created and written by BCM Technical Dept., with the information from the MX945GSE specifications, and Intel 82945GSE Specifications. BCM provides this manual “AS IS” without warranty of any kind, and will not be liable for any indirect, special, incidental or consequential damage (Including damages for loss or profit, loss of business, loss of use of data, interruption of business and the like). BCM reserve the right to change, correct at any time without notice.
CONTENTS Chapter 1 Product Overview............................................................................... 1-1 Mainboard Specifications ...................................................................................... 1-1 Block Diagram ....................................................................................................... 1-3 Mainboard Layout ................................................................................................. 1-4 Board Dimension ....................
Chapter 1 Product Overview Motherboard Specifications System Processor - Intel® Atom processor N270 (1.6GHz single core with HT) FSB - 533MHz Chipset - Northbridge: Intel® 945GSE chipset - Southbridge: Intel® ICH7M chipset Memory - 1 unbuffered non-ECC DDR2 533/667/800 SO-DIMM slot - Up to 1GB memory capacity LAN - 2x Gigabit Ethernet by Intel® 82574L Controller Audio IDE SATA Graphics - HDA Codec by Realtek ALC888 7.1 channel (compliant with Azalia 1.
- 1x chassis intrusion switch header - 1x S/PDIF-Out header - 1x amplifier header - 1x LVDS connector - 1x 20-pin ATX power connector Environmental Slots - 1 Mini PCI-E slot - 1 32-bit/33MHz PCI slot Form Factor - Mini ITX: 170mm x 170mm Mounting Storage Environment Operation Environment - 4 mounting holes - Temperature: -20oC ~ 80oC - Humidity: 5% ~ 90% non condensing - Temperature: 0oC ~ 60oC - Humidity: 5% ~ 90% non condensing 1-2
Block Diagram 1-3
Motherboard Layout MX945GSE Mini ITX Mainboard 1-4
Board Dimension 1-5
Back Panel & I/O Shield Drawing 1-6
Power Consumption Component Description CPU Intel® Atom Processor 200 Series Memory Corsair 1G DDR2-800 x1 Hard Disk Western Digital 80G IDE 7200rpm HDD x1 Operating System Microsoft Windows XP Professional SP2 MX945GSE (ATX) 3.3V input 5V input 12V input 5VSB Current Current Current Current (A) (A) (A) (A) Total Watt Watt Enter DOS (stable) 0.54 1.03 0.30 0.06 10.83W Enter BIOS (stable) 0.56 1.03 0.30 0.06 10.90W Idle 0.54 1.10 0.27 0.05 10.77W CPU Stress 100% 0.54 1.
Safety Compliance & MTBF Safety Compliance Certification Standard number EN 55022: 2006 EN 2006 CE RFI BSMI Immunity EN 55024:1998+A1:2001+A2:2003 CNS 13438 乙類(1995 年 6 月版) EN 1995+A1:2001+A2:2005 C-Tick FCC VCCI Title of standard Product family standard Limits for harmonic current emission Limitation of voltage fluctuation and flicker in low-voltage supply system Product family standard AS/NZS CISPR 22:2006 FCC CFR Title 47 Part 15 Subpart B: 2005 Class B CISPR 22: 2006 VCCI V-3:2008 Class B VCCI
Chapter 2 Hardware Setup Quick Components Guide 2-1
Memory The DIMM slot is intended for system memory modules. Installing Memory Modules 1. 2. 3. Locate the SO-DIMM slot on the mainboard. Align the notch on the DIMM with the key on the slot. Insert the DIMM at a 45 degrees into the SO-DIMM slot. Then push it in until the golden finger on the DIMM is deeply inserted in the SO-DIMM slot. Push the module towards the board until it is horizontal with the board. Manually check if the DIMM has been locked in place by the retaining clips at the sides.
Power Supply System Power Connector: ATX1 This connector allows you to connect a 20-pin power supply. To connect the power supply, make sure the power supply connector is inserted in the proper orientation and the pins are aligned. Then push down the power supply firmly into the connector. PIN 1 2 3 4 5 6 7 8 9 10 2-3 SIGNAL +3.3V +3.3V GND +5V GND +5V GND PWROK 5VSB +12V PIN 11 12 13 14 15 16 17 18 19 20 SIGNAL +3.
Back Panel I/O Serial Port The serial port is a 16550A high speed communications port that sends/ receives 16 bytes FIFOs. You can attach a serial mouse or other serial devices directly to the connector. VGA Port The DB15-pin female connector is provided for monitor. USB Port The USB (Universal Serial Bus) port is for attaching USB devices such as keyboard, mouse, or other USB-compatible devices. LAN The standard RJ-45 LAN jack is for connection to the Local Area Network (LAN).
Audio Ports These audio connectors are used for audio devices. You can differentiate the color of the audio jacks for different audio sound effects. Line-Out (Green) -Line Out, is a connector for speakers or headphones. Mic (Pink) -Mic, is a connector for microphones.
Connector IDE Connector: IDE1 This connector supports IDE hard disk drives, optical disk drives and other IDE devices. If you install two IDE devices on the same cable, you must configure the drives separately to master / slave mode by setting jumpers. Refer to IDE device’s documentation supplied by the vendors for jumper setting instructions. Chassis Intrusion Connector: JCI1 This connector connects to the chassis intrusion switch cable.
Serial ATA Connector: SATA1, SATA2 This connector is a high-speed Serial ATA interface port. Each connector can connect to one Serial ATA device. Please do not fold the Serial ATA cable into 90-degree angle. Otherwise, data loss may occur during transmission. SPI Flash ROM Header: JSPI1 This header is used to flash SPI flash ROM.
Please refer to the recommended CPU fans at CPU vendor’s official website or consult the mainboard vendor for proper CPU cooling fan. Backlight Connector: J1 This connector is provided for LCD backlight options. PIN 1 2 3 4 5 Front USB Header: JUSB1 SIGNAL 12V GND InverterOn BacklightControl 5V ® This header, compliant with Intel I/O Connectivity Design Guide, is ideal for connecting high-speed USB interface peripherals such as USB HDD, digital cameras, MP3 players, printers, modems and the like.
Note that the pins of VCC and GND must be connected correctly to avoid possible damage. Serial Port Connector: COM1, COM2, COM3, COM4 This connector is a 16550A high speed communications port that sends/receives 16 bytes FIFOs. You can attach a serial device to it through the optional serial port bracket.
PIN 1 3 5 7 9 11 13 SIGNAL RSTB# PRND0 PRND1 PRND2 PRND3 PRND4 PRND5 PIN 2 4 6 8 10 12 14 SIGNAL AFD# ERR# PINIT# LPT_SLIN# GND GND GND PIN 15 17 19 21 23 25 SIGNAL PRND6 PRND7 ACK# BUSY PE SLCT PIN 16 18 20 22 24 26 SIGNAL GND GND GND GND GND KEY Audio Amplifier Connector: JAMP1 The JAMP1 is used to connect audio amplifiers to enhance audio performance.
Front Panel Audio Connector: JAUD1 This connector allows you to connect the front panel audio and is compliant with ® Intel Front Panel I/O Connectivity Design Guide. PIN 1 2 3 SIGNAL MIC_L GND MIC_R 4 PRESENCE# 5 6 LINE_OUT_R MIC_JD 7 Front_JD 8 9 10 NC LINE_OUT_L LINE_OUT_JD DESCRIPTION Microphone -Left channel Ground Microphone -Right channel Active low signal – signals BIOS that a High Definition Audio dongle is connected to the analog header.
LVDS Flat Panel Connector: JLVDS1 The LVDS (Low Voltage Differential Signal) connector provides a digital interface typically used with flat panels. After connecting an LVDS interfaced flat panel to the JLVDS1, be sure to check the panel datasheet and set the JVDD1 LVDS Power Selection Jumper to a proper voltage.
Jumper LVDS Power Selection Jumper: JVDD1 Use this jumper to specify the operation voltage of the LVDS interfaced flat panel. COM Port Power Jumper: JCOMP1~6 These jumpers specify the operation voltage of the onboard serial ports.
Slot PCI (Peripheral Component Interconnect) Express Slot ® The CON1 is Mini PCI-E connector for wireless LAN, TV tuner, and Intel Turbo Memory (Robson NAND Flash). PCI (Peripheral Component Interconnect) Slot The PCI slot supports LAN card, SCSI card, USB card, and other add-on cards that comply with PCI specifications. When adding or removing expansion cards, make sure that you unplug the power supply first.
Chapter 3 BIOS Setup Entering Setup Power on the computer and the system will start POST (Power On Self Test) process. When the message below appears on the screen, press key to enter Setup. Press Del to enter SETUP If the message disappears before you respond and you still wish to enter Setup, restart the system by turning it OFF and On or pressing the RESET button. You may also restart the system by simultaneously pressing , , and keys.
Getting Help After entering the Setup menu, the first menu you will see is the Main Menu. Main Menu The main menu lists the setup functions you can make changes to. You can use the arrow keys (↑↓) to select the item. The on-line description of the highlighted setup function is displayed at the bottom of the screen. Sub-Menu If you find a right pointer symbol (as shown in the right view) appears to the left of certain fields that means a sub-menu can be launched from this field.
The Menu Bar Main Use this menu for basic system configurations, such as time, date etc. Advanced Use this menu to set up the items of special enhanced features. Boot Use this menu to specify the priority of boot devices. Security Use this menu to set supervisor and user passwords. Chipset This menu controls the advanced features of the onboard Northbridge and Southbridge.
Power Use this menu to specify your settings for power management. Exit This menu allows you to load the BIOS default values or factory default settings into the BIOS and exit the BIOS setup utility with or without changes.
Main BIOS Information, Processor, System Memory These items show the firmware and hardware specifications of your system. Read only. System Time The time format is . System Date The date format is , .
Advanced CPU Configuration These items show the advanced specifications of your CPU. Read only.
Max CPUID Value Limit The Max CPUID Value Limit BIOS feature allows you to circumvent problems with older operating systems that do not support Hyper-Threading Technology. When enabled, the processor will limit the maximum CPUID input value to 03h when queried, even if the processor supports a higher CPUID input value. When disabled, the processor will return the actual maximum CPUID input value of the processor when queried.
IDE Configuration ATA/IDE Configuration This setting specifies the operation mode of the onboard ATA/IDE controller. Legacy IDE Channels This setting specifies the IDE channels.
[Type] Press PgUp/<+> or PgDn/<-> to select [Manual], [None] or [Auto] type. Note that the specifications of your drive must match with the drive table. The hard disk will not work properly if you enter improper information for this category. If your hard disk drive type is not matched or listed, you can use [Manual] to define your own drive type manually.
Super IO Configuration Serial Port Address, Serial Port IRQ Select an address and a corresponding interrupt for the serial port. Parallel Port Address Select an address for the parallel port. Watch Dog You can enable the system watch-dog timer, a hardware timer that generates either an NMI or a reset when the software that it monitors does not respond as expected each time the watch dog polls it.
Hardware Health Configuration Chassis Intrusion The field enables or disables the feature of recording the chassis intrusion status and issuing a warning message if the chassis is once opened. To clear the warning message, set the field to [Reset]. The setting of the field will automatically return to [Enabled] later.
ACPI Settings General ACPI Configuration Suspend Mode This item specifies the power saving modes for ACPI function. If your operating system supports ACPI, such as Windows 98SE, Windows ME and Windows 2000, you can choose to enter the Standby mode in S1 (POS) or S3 (STR) fashion through the setting of this field. USB Device Wakeup From S3 The item allows the activity of the USB device to wake up the system from S3 (Suspend to RAM) sleep state.
Advanced ACPI Configuration ACPI Version Features This setting allows you to select the ACPI version. ACPI APIC Support This BIOS feature is used to enable or disable the motherboard's APIC (Advanced Programmable Interrupt Controller). The APIC provides multiprocessor support, more IRQs and faster interrupt handling.
Legacy USB Support Set to [Enabled] if your need to use any USB device in the operating system that does not support or have any USB driver installed, such as DOS and SCO Unix. Set to [Disabled] only if you want to use any USB device other than the USB mouse. BIOS EHCI Hand-Off This setting allows you to enable or disable a workaround for operating systems without EHCI (Enhanced Host Controller Interface) hand-off support.
Boot Boot Settings Configuration 3-15
Quick Boot Enabling this setting will cause the BIOS power-on self test routine to skip some of its tests during bootup for faster system boot. Quiet Boot This BIOS feature determines if the BIOS should hide the normal POST messages with the motherboard or system manufacturer's full-screen logo. When it is enabled, the BIOS will display the full-screen logo during the boot-up sequence, hiding normal POST messages.
Security Supervisor Password / Change Supervisor Password Supervisor Password controls access to the BIOS Setup utility. These settings allow you to set or change the supervisor password. User Password / Change User Password User Password controls access to the system at boot. These settings allow you to set or change the user password. Boot Sector Virus Protection This function protects the BIOS from accidental corruption by unauthorized users or computer viruses.
Chipset North Bridge Configuration 3-18
Configure DRAM Timing by SPD Selects whether DRAM timing is controlled by the SPD (Serial Presence Detect) EEPROM on the DRAM module. Setting to [Auto By SPD] enables DRAM timings and the following related items to be determined by BIOS based on the configurations on the SPD. Selecting [Manual] allows users to configure the DRAM timings and the following related items manually. Boot Graphics Adapter Priority This item specifies which VGA card is your primary graphics adapter.
Flat Panel Type Use the field to select the resolution of the flat panel display. South Bridge Configuration USB Functions This setting specifies the function of the onboard USB controller. USB 2.0 Controller, Audio Controller, PRO-NIC Controller, SMBUS Controller These settings enable/disable the specified onboard controllers.
Power Restore on AC Power Loss This setting specifies whether your system will reboot after a power failure or interrupt occurs. Available settings are: [Power Off] Leaves the computer in the power off state. [Power On] Leaves the computer in the power on state. [Last State] Restores the system to the previous status before power failure or interrupt occurred.
Exit Save Changes and Exit Save changes to CMOS and exit the Setup Utility. Discard Changes and Exit Abandon all changes and exit the Setup Utility. Discard Changes Abandon all changes and continue with the Setup Utility. Load Optimal Defaults Use this menu to load the default values set by the mainboard manufacturer specifically for optimal performance of the mainboard. Load Failsafe Defaults Use this menu to load the default values set by the BIOS vendor for stable system performance.
Chapter 4 System Resources Watch Dog Timer Setting Software Code SIO_IDX equ 4EH SIO_DTAequ 4FH Timer equ 10; reset after 10 seconds 1. Enter configuration mode Mov dx, SIO_IDX mov al, 87h out dx, al out dx, al 2. Set to LDN 07 Mov dx, SIO_IDX mov al, 07h out dx, al mov dx, SIO_DTA mov al, 07h out dx, al 3. Set WatchDog Timer Mov dx, SIO_IDX mov al, 0f6h out dx, al mov dx, SIO_DTA mov al, Timer out dx, al 4.
AMI POST Code Bootblock Recovery Code Checkpoints The Bootblock recovery code gets control when the BIOS determines that a BIOS recovery needs to occur because the user has forced the update or the BIOS checksum is corrupt. The following table describes the type of checkpoints that may occur during the Bootblock recovery portion of the BIOS: Checkpoint E0 E9 EA EB EF E9 or EA F0 F1 F2 F3 F5 FA FB F4 FC FD FF Description Initialize the floppy controller in the super I/O.
POST Code Checkpoints The POST code checkpoints are the largest set of checkpoints during the BIOS pre-boot process. The following table describes the type of checkpoints that may occur during the POST portion of the BIOS: Checkpoint 3 4 5 6 8 C0 C1 C2 C5 C6 C7 0A 0B 0C 0E 13 24 30 2A 2C 2E 31 33 37 38 39 3A 3B Description Disable NMI, Parity, video for EGA, and DMA controllers. Initialize BIOS, POST, Runtime data area. Also initialize BIOS modules on POST entry and GPNV area.
3C 40 50 52 60 75 78 7A 7C 84 85 87 8C 8D 8E 90 A0 A1 A2 A4 A7 A8 A9 AA AB AC B1 00 keys to limit memory test. Display total memory in the system. Mid POST initialization of chipset registers. Detect different devices (Parallel ports, serial ports, and coprocessor in CPU, … etc.) successfully installed in the system and update the BDA, EBDA…etc. Programming the memory hole or any kind of implementation that needs an adjustment in system RAM size if needed.
