American Megatrends MI941 User Manual
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American Megatrends MI941 User Manual

American Megatrends MI941 User Manual

Lga775 core 2 duo intel g41 chipset mini-itx motherboard
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MI941
LGA775 Core™ 2 Duo
Intel
G41 Chipset
®
Mini-ITX Motherboard
USER'S MANUAL
Version 1.0A

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Summary of Contents for American Megatrends MI941

  • Page 1 MI941 LGA775 Core™ 2 Duo Intel G41 Chipset ® Mini-ITX Motherboard USER’S MANUAL Version 1.0A...
  • Page 2 Acknowledgments AMI is a registered trademark of American Megatrends, Inc. PS/2 is a trademark of International Business Machines Corporation. Intel is a trademark or registered trademark of Intel Corporation. Microsoft Windows is a registered trademark of Microsoft Corporation. Winbond is a registered trademark of Winbond Electronics Corporation.

  • Page 3: Table Of Contents

    ............5 Installing the CPU ............... 6 ATX Power Installation ............6 Installing the Memory ............7 Setting the Jumpers ............. 8 Connectors on MI941 ............11 BIOS Setup ............19 Drivers Installation ........41 Intel Chipset Software Installation Utility......42 Intel G41 Chipset Family Graphics Driver Installation ..
  • Page 4 This page is intentionally left blank. MI941 User’s Manual...

  • Page 5: Introduction

    INTRODUCTION Introduction Checklist Your MI941 Core 2 Duo motherboard package should include the items listed below: • The MI941 motherboard • This User’s manual • 1 x I/O shield • 1 x IDE cable • 1 x SATA cable • 1 CD containing the following: •...

  • Page 6: Product Description

    INSTALLATIONS Product Description The MI941 Mini-ITX motherboard is designed for either the Intel® Core™2 Duo or Core™2 Quad processors of up to 1333MHz FSB. It is based on the Intel G41 Express chipset and it comes with two dual-channel DDR3 memory slots and 4GB memory capacity for faster system responsiveness and support of 64-bit computing.

  • Page 7: Specifications

    ICH7 built-in RTC with on-board lithium battery Yes (256 segments, 0, 1, 2…255 sec/min) Watchdog Timer 4 in and 4 Out Digital IO LAN Wakeup Other Power Connector +5V, +3.3V, +12V, -12V & 5VSB System Voltage RoHS Compliant 170 x 170mm Board Size MI941 User’s Manual...

  • Page 8: Board Dimensions

    INSTALLATIONS Board Dimensions MI941 User’s Manual...

  • Page 9: Installations

    INSTALLATIONS Installations This section provides information on how to use the jumpers and connectors on the MI941 in order to set up a workable system. The topics covered are: Installing the CPU ................. 6 ATX Power Installation ................. 6 Installing the Memory ................7 Setting the Jumpers ................

  • Page 10: Installing The Cpu

    INSTALLATIONS Installing the CPU The MI941 motherboard supports an LGA 775 processor socket for Intel® Core 2 Duo processors. The LGA 775 processor socket comes with a lever to secure the processor. Refer to the pictures below, from left to right, on how to place the processor into the CPU socket.

  • Page 11: Installing The Memory

    INSTALLATIONS Installing the Memory The MI941 motherboard supports two DDR3 memory sockets for a maximum total memory of 4GB. It supports DDR3 800/1066MHz. Basically, the system memory interface has the following features: Supports two 64-bit wide DDR data channels Available bandwidth up to 6.4GB/s (DDR3 1066) for two-channel mode.

  • Page 12: Setting The Jumpers

    The following lists the connectors and their respective functions. Jumper Locations on MI941 ..............9 JP1, JP2, JP3: RS232/422/485 (COM2) Selection ......10 JP6: Clear CMOS Contents ..............10...
  • Page 13 INSTALLATIONS Jumper Locations on MI941 JP1, JP2, JP3: RS232/422/485 (COM2) Selection ......10 JP6: Clear CMOS Contents ..............10 MI941 User’s Manual...
  • Page 14 JP6: Clear CMOS Contents Use JP6, a 3-pin header, to clear the CMOS contents. Note that the ATX-power connector should be disconnected from the motherboard before clearing CMOS. Setting Function Pin 1-2 Normal Short/Closed Pin 2-3 Clear CMOS Short/Closed MI941 User’s Manual...

  • Page 15: Connectors On Mi941

    INSTALLATIONS Connectors on MI941 The connectors on MI941 allow you to connect external devices such as keyboard, floppy disk drives, hard disk drives, printers, etc. The following table lists the connectors on MI941 and their respective functions. ATX2: 24-pin ATX Power Connector ..........13 ATX1: ATX 12V Power Connector ............
  • Page 16 INSTALLATIONS Connector Locations on MI941 ATX2: 24-pin ATX Power Connector ....................13 ATX1: ATX 12V Power Connector ....................... 13 DDRIII1: Channel A DDR3 Socket ....................... 13 DDRIII2: Channel B DDR3 Socket ....................... 13 CPU_FAN1: CPU Fan Power Connector ....................13 SYS_FAN1: System Fan1 Power Connector ..................

  • Page 17: Atx2: 24-Pin Atx Power Connector

    DDRIII1: Channel A DDR3 Socket DDRIII2: Channel B DDR3 Socket CPU_FAN1: CPU Fan Power Connector Pin # Signal Name Ground +12V Rotation detection Control SYS_FAN1: System Fan1 Power Connector Pin # Signal Name Ground +12V Rotation detection MI941 User’s Manual...

  • Page 18: Sys_Fan2: System Fan2 Power Connector

    CTS, Clear to send DTR, Data terminal ready RI, Ring indicator GND, ground Not Used J2: COM2 is jumper selectable for RS-232, RS-422 and RS-485. Pin # Signal Name RS-232 R2-422 RS-485 DATA- DATA+ Ground Ground Ground MI941 User’s Manual...

  • Page 19: Cn5: Gigabit Lan (Intel 82583V) Rj-45 &Usb 0/1 Connector

    N.C. DDCDATA HSYNC VSYNC DDCCLK Signal Name Pin # Pin # Signal Name DATA2- DATA2+ N.C. N.C. DDCCLK DDCDATA N.C. DATA1- DATA1+ N.C. N.C. Hot Plug Detect DATA0- DATA0+ N.C. N.C. CLK+ CLK- CN7: USB 2/3 Connector MI941 User’s Manual...

  • Page 20: Cn12: Ps/2 Keyboard And Ps/2 Mouse Connectors

    Ground Ground J1: Digital I/O Connector (4 in, 4 out) J1 supports TTL levels and is used to control external devices requiring ON/OFF circuitry. Signal Name Pin # Pin # Signal Name Ground Out3 Out1 Out2 Out0 MI941 User’s Manual...

  • Page 21: J5: Spi Debug Tools Port (Factory Use Only)

    The reset switch allows the user to reset the system without turning the main power switch off and then on again. Orientation is not required when making a connection to this header. +5V and 5VSB Signals: Pins 7 and 8 Pin # Signal Name +5VSB MI941 User’s Manual...

  • Page 22: J10: Usb 4/5 Connector

    Ground IOCHRDY Host ALE DACK0 Ground IRQ14 No connect IDE1 Address 1 No connect Address 0 Address 2 Chip select 0 Chip select 1 Activity Ground PCI1: PCI Slot (supports two masters) PCIE1: x1 PCI Express Slot MI941 User’s Manual...

  • Page 23: Bios Setup

    BIOS SETUP BIOS Setup This chapter describes the different settings available in the AMI (American Megatrends, Inc.) BIOS that comes with the board. The topics covered in this chapter are as follows: BIOS Introduction ................20 BIOS Setup ..................21 Main BIOS Setup ................

  • Page 24: Bios Introduction

    BIOS SETUP BIOS Introduction This chapter describes the different settings available in the AMI (American Megatrends, Inc.) BIOS that comes with the board. The topics covered in this chapter are as follows: BIOS Introduction ................20 BIOS Setup ..................21 Main BIOS Setup .................

  • Page 25: Bios Setup

    <PgUp> and <PgDn> keys to change entries, <F1> for help and <Esc> to quit. When you enter the Setup utility, the Main Menu screen will appear on the screen. The Main Menu allows you to select from various setup functions and exit choices. MI941 User’s Manual...

  • Page 26: Main Bios Setup

    These defaults have been carefully chosen by both AMI and your system manufacturer to provide the absolute maximum performance and reliability. Changing the defaults could cause the system to become unstable and crash in some cases. MI941 User’s Manual...

  • Page 27: Advanced Settings

    The fields in each section are shown in the following pages, as seen in the computer screen. Please note that setting the wrong values may cause the system to malfunction. If unsure, please contact technical support of your supplier. MI941 User’s Manual...

  • Page 28: Hardware Prefetcher

    The prefetching occurs up to a page boundary. MI941 User’s Manual...
  • Page 29 64 bytes. The other 64 bytes of the sector in the last-level cache are not used unless the application explicitly issues a load to that address. Disabling adjacent sector prefetch Intel® Pentium® processor-based systems can reduce bus traffic. MI941 User’s Manual...

  • Page 30: Onboard Serial Port

    This field sets the system power status whether on or off when power returns to the system from a power failure situation. Power On Function This field is related to how the system is powered on . The options are None, Mouse Left, Mouse Right, and Any Key. MI941 User’s Manual...

  • Page 31: Acpi Shutdown Temperature

    BIOS SETUP UTILITY Advanced Main PCIPnP Boot Security Chipset Exit ACPI Settings General ACPI Configuration settings ►General ACPI Configuration <- Select Screen ↑↓ Select Item Change Field Tab Select Field General Help F10 Save and Exit ESC Exit MI941 User’s Manual...

  • Page 32: Suspend Mode

    ↑↓ Select Item Change Field Tab Select Field General Help F10 Save and Exit ESC Exit Suspend Mode The options of this field are S1, S3 and Auto. Repost Video on S3 Resume The default setting is No. MI941 User’s Manual...

  • Page 33: Resume On Ring

    This option is used enable activity on the PCI PME (power managementevent) controller to wake up the system from a suspend or standby state Resume On RTC Alarm This option is used to specify the time the system should be awakened from a suspended state MI941 User’s Manual...

  • Page 34: Mps Version Control For Os

    Change Field Tab Select Field General Help F10 Save and Exit ESC Exit SMBIOS SMI Support Use the SMBIOS SMI Support to enable the system to support the SMBIOS SMI wrapper for the PnP function 50h – 54h. MI941 User’s Manual...

  • Page 35: Legacy Usb Support

    USB 2.0 Controller Mode This option is used to control USB device in HiSpeed (480Mbps) or FullSpeed (12Mbps).This option is enabled by HiSpeed. BIOS EHCI Hand-Off This feature allows you to enable support for operating system without EHCI hand-off feature. MI941 User’s Manual...

  • Page 36: Pcipnp Settings

    PnP devices not required for boot if your system has a Plug and Play OS. PCI Latency Timer This item sets value in units of PCI clocks for PCI device latency timer register. Options are: 32, 64, 96, 128, 160, 192, 224, 248. MI941 User’s Manual...
  • Page 37 Some PCI IDE cards may require this to be set to the PCI slot number that is holding the card. IRQ# Use the IRQ# address to specify what IRQs can be assigned to a particular peripheral device MI941 User’s Manual...

  • Page 38: Boot Settings

    When set to Enabled, the system waits for the F1 key to be pressed when error occurs. This allows option ROM to trap interrupt 19. Hit <DEL> Message Display This displays “Press <DEL> to run Setup” in POST. Interrupt 19 Capture This allows option ROM to trap interrupt 19. MI941 User’s Manual...

  • Page 39: Security Settings

    : Not Installed User Password : Not Installed <- Select Screen Change Supervisor Password ↑↓ Select Item Change User Password Change Field Tab Select Field Boot Sector Virus Protection [Disabled] General Help F10 Save and Exit ESC Exit MI941 User’s Manual...

  • Page 40: Advanced Chipset Settings

    General Help PEG Port [Auto] F10 Save and Exit ESC Exit Memory Remap Feature This feature allows remapping of overlapped PCI memory above the total physical memory. DRAM Frequency This option is, by default, set to Auto. MI941 User’s Manual...
  • Page 41 Default setting is No VT Mode, 2 MB PAVP Mode Use the feature to select the Protect Audio Video Path Mode. PEG Port This BIOS feature is a toggle that enables or disables the PCI Express port. MI941 User’s Manual...

  • Page 42: Usb Function

    This option enables the number of USB ports desired or disables the USB function. USB 2.0 Controller This option is disabled by default. Audio Controller This option is used to enable the Southbridge high definition audio controller. SMBUS Controller This option is enabled by default. MI941 User’s Manual...

  • Page 43: Exit Setup

    These default settings are optimal and enable all high performance features. Load Failsafe Defaults This option allows you to load the troubleshooting default values permanently stored in the BIOS ROM. These default settings are non-optimal and disable all high-performance features. MI941 User’s Manual...
  • Page 44 BIOS SETUP This page is intentionally left blank. MI941 User’s Manual...

  • Page 45: Drivers Installation

    Realtek High Definition Audio Driver Installation ....48 Intel PRO LAN Network Drivers Installation ......50 IMPORTANT NOTE: After installing your Windows operating system (Windows XP/ Vista), you must install first the Intel Chipset Software Installation Utility before proceeding with the drivers installation. MI941 User’s Manual...

  • Page 46: Intel Chipset Software Installation Utility

    Follow the instructions below to complete the installation under Windows XP/Vista. 1. Insert the CD that comes with the board. Click Intel at the left side, then Intel(R) G41 Chipset Drivers. 2. Click Intel(R) Chipset Software Installation Utility. MI941 User’s Manual...
  • Page 47 DRIVERS INSTALLATION 3. When the welcome screen to the Intel(R) Chipset Software Installation Utility appears, click Next to continue. 4. Click Yes to accept the software license agreement and proceed with the installation process. MI941 User’s Manual...
  • Page 48 DRIVERS INSTALLATION 5. On Readme Information screen, click Next to continue the installation. 6. The Setup process is now complete. Click Finish to restart the computer and for changes to take effect. MI941 User’s Manual...

  • Page 49: Intel G41 Chipset Family Graphics Driver Installation

    To install the VGA drivers, follow the steps below to proceed with the installation. 1. Insert the CD that comes with the board. Click Intel at the left side, then Intel(R) G41 Chipset Drivers. 2. Click Intel G41 Chipset Family Graphics Driver. MI941 User’s Manual...
  • Page 50 DRIVERS INSTALLATION 3. When the welcome screen of the Intel(R) Graphics Media Accelerator Driver appears, click Next to continue. 4. Click Yes to to agree with the license agreement and continue the installation. MI941 User’s Manual...
  • Page 51 DRIVERS INSTALLATION 5. Click Next in the Readme File Information window. 6. Click Next in the Setup Progress window. 7. Setup is now complete. Click Finish to restart the computer and for changes to take effect. MI941 User’s Manual...

  • Page 52: Realtek High Definition Audio Driver Installation

    Installation Follow the steps below to install the Realtek HD Codec Audio Drivers. 1. Insert the CD that comes with the board. Click Intel and then Intel(R) G41 Chipset Drivers. 2. Click Realtek High Definition Audio Driver. MI941 User’s Manual...
  • Page 53 3.When the welcome screen to InstallShield Wizard for Realtek High Definition Audio Driver appears, click Next to start the installation. 4.When the InstallShieldWizard has finished performing maintenance operations on Realtek High Definition Codec Audio Audio Driver, click Finish to restart the computer. MI941 User’s Manual...

  • Page 54: Intel Pro Lan Network Drivers Installation

    Intel PRO LAN Network Drivers Installation Follow the steps below to install Intel PRO LAN drivers. 1. Insert the CD that comes with the board. Click Intel and then Intel(R) G41 Chipset Drivers. 2. Click Intel(R) Gigabit Ethernet Drivers. MI941 User’s Manual...
  • Page 55 DRIVERS INSTALLATION 3. In the Intel® Network Connections screen*, click Install Drivers and Software. 4. In the welcome screen of the InstallShield Wizard for Intel(R) Network Connections, click Next. MI941 User’s Manual...
  • Page 56 DRIVERS INSTALLATION 5. In the License Agreement, Select I accept the terms in the license agreement and click Next. 6. In the Setup Options, click the checkbox as shown below and click Next. MI941 User’s Manual...
  • Page 57 DRIVERS INSTALLATION 7. In the InstallShield Wizard screen, click Install to begin the installation. 8. InstallShield Wizard is completed. Click Finish to exit the Wizard. MI941 User’s Manual...

  • Page 58: Appendix

    Parallel Port #1(LPT1) 360h - 36Fh Network Ports 3B0h - 3BFh Monochrome & Printer adapter 3C0h - 3CFh EGA adapter 3D0h - 3DFh CGA adapter 3F0h - 3F7h Floppy Disk Controller 3F8h - 3FFh Serial Port #1(COM1) MI941 User’s Manual...

  • Page 59: Interrupt Request Lines (Irq)

    Serial Port #2 IRQ4 Serial Port #1 IRQ5 Reserved IRQ6 Floppy Disk Controller IRQ7 Parallel Port #1 IRQ8 Real Time Clock IRQ9 Reserved IRQ10 Reserved IRQ11 Reserved IRQ12 PS/2 Mouse IRQ13 80287 IRQ14 Primary IDE IRQ15 Secondary IDE MI941 User’s Manual...

  • Page 60: Watchdog Timer Configuration

    **endptr; copyright(); if (argc != 2) printf(" Parameter incorrect!!\n"); return 1; if (Init_W627EHF() == 0) printf(" Winbond 83627HF is not detected, program abort.\n"); return 1; bTime = strtol (argv[1], endptr, 10); MI941 User’s Manual...
  • Page 61 = Get_W627EHF_Reg( 0xF5); bBuf &= (!0x08); Set_W627EHF_Reg( 0xF5, bBuf); //count mode is second Set_W627EHF_Reg( 0xF6, interval); //set timer //======================================================================= void DisableWDT(void) Set_W627EHF_LD(0x08); //switch to logic device 8 Set_W627EHF_Reg(0xF6, 0x00); //clear watchdog timer Set_W627EHF_Reg(0x30, 0x00); //watchdog disabled //======================================================================= MI941 User’s Manual...
  • Page 62 Init_Finish; } W627EHF_BASE = 0x00; result = W627EHF_BASE; Init_Finish: return (result); //======================================================================= void Unlock_W627EHF (void) outportb(W627EHF_INDEX_PORT, W627EHF_UNLOCK); outportb(W627EHF_INDEX_PORT, W627EHF_UNLOCK); //======================================================================= ==== void Lock_W627EHF (void) outportb(W627EHF_INDEX_PORT, W627EHF_LOCK); //======================================================================= void Set_W627EHF_LD( unsigned char LD) Unlock_W627EHF(); outportb(W627EHF_INDEX_PORT, W627EHF_REG_LD); outportb(W627EHF_DATA_PORT, LD); MI941 User’s Manual...
  • Page 63 (W627EHF_BASE) #define W627EHF_DATA_PORT (W627EHF_BASE+1) //======================================================================= #define W627EHF_REG_LD 0x07 //======================================================================= #define W627EHF_UNLOCK 0x87 #define W627EHF_LOCK 0xAA //======================================================================= unsigned int Init_W627EHF(void); void Set_W627EHF_LD( unsigned char); void Set_W627EHF_Reg( unsigned char, unsigned char); unsigned char Get_W627EHF_Reg( unsigned char); //======================================================================= #endif //__W627EHF_H MI941 User’s Manual...
  • Page 64 Set_W627HF_Reg(0xF1, ((ucDO & 0x0F) << 4)); ucBuf = Get_W627HF_Reg(0xF1) & 0x0F; if (ucBuf != ucDI) ucDI = ucBuf; printf("Digital I/O Input Changed. Current Data is 0x%X\n",ucDI); if (kbhit()) getch(); break; delay(500); return 0; //===================================================================== void ClrKbBuf(void) while(kbhit()) getch(); //--------------------------------------------------------------------------- MI941 User’s Manual...

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