IBASE MB941 User Manual
MB941
LGA775 Core 2 Duo
Intel® G41 Chipset
Micro-ATX Motherboard
USER’S MANUAL
Version 1.0
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.
All other product names or trademarks are properties of their
respective owners.
Table of Contents
Introduction ...................................................... 1
Checklist ............................................................................. 1
Product Description ............................................................ 2
Specifications ..................................................................... 3
Board Dimensions .............................................................. 4
Installations ...................................................... 5
Installing the CPU .............................................................. 6
ATX Power Installation ...................................................... 6
Installing the Memory......................................................... 7
Setting the Jumpers............................................................. 8
Connectors on MB941 ..................................................... 11
BIOS Setup.......................................................22
Drivers Installation ......................................44
Intel Chipset Software Installation Utility ......................... 45
Intel G41 Chipset Family Graphics Driver Installation ..... 48
Realtek High Definition Audio Driver Installation ........... 51
Realtek LAN Controller Drivers Installation .................... 53
Appendix ...........................................................55
A. I/O Port Address Map .................................................. 55
B. Interrupt Request Lines (IRQ) ...................................... 56
C. Watchdog Timer Configuration ................................... 57
D. Digital I/O Sample Code ............................................. 62
MB941 User’s Manual iii
This page is intentionally left blank.
iv
MB941 User’s Manual
INTRODUCTION
Introduction
Checklist
Your MB941 Core 2 Duo motherboard package should include the items
listed below:
The MB941 motherboard
This User’s manual
1x SATA cable (SATA-5)
1x COM port cable (PK1-56)
1x USB cable (USB2-9)
1x DVD containing the following:
Chipset Drivers
Flash Memory Utility
Remarks: PK1-20B dual-port COM cable is optional.
MB941 User’s Manual 1
INSTALLATIONS
Product Description
The MB941 Micro-ATX motherboard is designed for either the
Intel Core2 Duo or Core2 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 8GB
memory capacity for faster system responsiveness and support of
64-bit computing.
Dual independent display comes to life with the onboard Intel
G41 integrated graphics with CRT. LAN functionality is supported
with two Gigabit Ethernet controllers.
MB941 is supports high-end features including high definition
audio, eight fast USB ports, four SATAII, watchdog timer, digital
I/O and four serial ports. Board dimensions are 244mm by
244mm.
MB941 FEATURES
Supports Intel® Core™2 Quad / Core™2 Duo / Pentium®
Dual Core/ Celeron® processors
800MHz/1066MHz/1333MHz FSB
DDR3 DIMM x2, Max. 8GB
Single Gigabit LAN
Integrated G41 VGA for CRT
8x USB 2.0, 4x SATA II, 4x COM
HD audio, Watchdog timer, 2x PCI , 1x PCI-E x1,
1x PCI-E x16.
2
MB941 User’s Manual
Product
MB941
Form Factor
Micro-ATX
CPU Type
LGA775 socket for Intel® Core™2 Quad / Intel® Core™2 Duo / Celeron®
processors 800/1066/1333MHz FSB (45nm/65nm Technology)
Green /APM
APM1.2
BIOS
AMI BIOS, support ACPI Function
Chipset
Intel® G41 (82G41) Express GMCH: 1254 FCBGA (25W)
Intel® ICH7 (82801GB): 652 BGA (3.3W)
Memory Slot
240 DIMM x 2 (w/o ECC), for DDR3-1066 / DDR3-800 MHz Max. 4GB, dual
channel
VGA
Intel® G41 Integrated Graphics Controller (GMA X4500)
- Support DX10 and OpenGL2.1
- Dual independent display available through on-board VGA
- and DVI-D (via IBP192 on PCIe x16 slot) ~ optional
LAN
Realtek RTL8111E PCI-E Gigabit LAN Controller x 2
USB
ICH7 built-in USB 2.0 host controller, support 8 ports
- 4 ports on edge connectors
- 4 ports from pin headers
Serial ATA
Ports
ICH7 built-in SATA controller, supports 4 ports
- SATA II (3.0 Gb/s)
Compact
Flash Slot
ICH7 built-in one channel UDMA 33/66/100, for CF Type II (on component
side)
Audio
Intel ICH7 built-in 7.1CH HD audio controller w/ Realtek ALC888 Codec
- Edge connector (6 audio jacks)
LPC I/O
Winbond W83627UHG :
- COM1 (RS232/422/485), COM2 (RS232)
- COM3 (RS232), COM4 (RS232)
[with pin-9 with power for 4 ports (500 mA for each port)]
- CPU fan connector supports 4-wire fan with PWM control
- System fan connector x1 DC fan control
- System fan connector x1 w/o control
- Supports two thermal sensor (CPU + on-board)
- Voltage monitoring for VCC (processor), 3.3V, 5V, and 12V
- Hardware monitor (2 thermal inputs, 4 voltage monitor inputs, VID0-4 & 1 x
fan header)
Digital IO
4 in & 4 out
Expansion
Slots
PCI-express (16x) slot x 1
PCI-Express(1x) slot x1
PCI slot x 2
IBASE
Proprietary
LPC Port
2 x 8 pins header x 1 for optional features:
- ID395-R for TPM 1.2 ~ Optional (Custom BIOS needed to support this
function)
- ID394-R for 4 additional serial Ports ~ Optional (Custom BIOS needed to
support this function)
Edge
Connector
PS/2 KB/MS, COM1, CRT, LPT, HD audio
RJ45 + dual USB stack connector x 2 for LAN1~2 & USB1~4
On Board
Header/
Connector
Standard SATA (7-pin shrouded vertical) connector x4
2x5-pin header x2 for USB 5~8, 2x5-pin DF11 x1 for COM2 (RS232)
2x10-pin DF11 x1 for COM3~4 (RS232), 2x5-pin header x1 for Digital I/O
4-pins header x1 for CPU fan & 3-pim headers x2 for system fan
2x8-pin box header for power switch/power LED/HDD LED/reset switch
Watchdog Timer
Yes (256 segments, 0, 1, 2…255 sec/min)
Power
Connector
ATX1 (24-pin connector for system)
ATX_12 (8-pin connector for CPU operating voltage)
Board Size
244mm x 244mm
Specifications
INTRODUCTION
MB941 User’s Manual 3
INSTALLATIONS
Board Dimensions
4
MB941 User’s Manual
INSTALLATIONS
Installations
This section provides information on how to use the jumpers and
connectors on the MB941 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 .............................................................................. 8
Connectors on MB941 ....................................................................... 11
MB941 User’s Manual 5
INSTALLATIONS
Installing the CPU
The MB941 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. Please note that the cover of the
LGA775 socket must always be installed during transport to avoid
damage to the socket.
ATX Power Installation
The system power is provided to the motherboard with the ATX1 and
ATX2 power connectors. ATX1 is a 24-pin power connector and ATX2
is a 8-pin 12V power connector.
The 24-pin power connector can to be connected to a standard 20-pin
ATX power connector in a standard ATX power supply (Min. 400watt).
Note: The power supply 5VSB voltage must be at least 2A.
6
MB941 User’s Manual
INSTALLATIONS
Installing the Memory
The MB941 motherboard supports two DDR3 memory sockets for a
maximum total memory of 8GB. 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.
Supports 512Mb, 1Gb, 2Gb DDR3 technologies.
Supports only x8, x16, DDR3 devices with four banks
Supports only unbuffered DIMMs
Supports opportunistic refresh
Up to 32 simultaneously open pages (four per row, four rows
maximum)
MB941 User’s Manual 7
INSTALLATIONS
Setting the Jumpers
Jumpers are used on the motherboard are used to select various settings
and features according to your needs and applications. Contact your
supplier if you have doubts about the best configuration for your needs.
The following lists the connectors and their respective functions.
Jumper Locations on MB941 ............................................................... 9
JP2, JP1, JP7, JP6: COM1/2/3/4 RS232 +5V/+12V Power Setting .... 10
JP3, JP4, JP5: RS232/422/485 (COM1) Selection.............................. 10
JP8: Clear CMOS Contents ............................................................... 10
8
MB941 User’s Manual
DDRⅢ 2
DDRⅢ 1
Jumper Locations on MB941
INSTALLATIONS
JP2, JP1, JP7, JP6: COM1/2/3/4 RS232 +5V/+12V Power Setting
JP3, JP4, JP5: RS232/422/485 (COM1) Selection
JP8: Clear CMOS Contents
MB941 User’s Manual 9
INSTALLATIONS
JP4/JP6
Setting
Function
Pin 1-2
Short/Closed
+12V
Pin 3-4
Short/Closed
Normal
Pin 5-6
Short/Closed
+5V
COM1
Function
RS-232
RS-422
RS-485
Jumper
Setting
(pin closed)
JP3:
1-2
JP4:
3-5 & 4-6
JP5:
3-5 & 4-6
JP3:
3-4
JP4:
1-3 & 2-4
JP5:
1-3 & 2-4
JP3:
5-6
JP4:
1-3 & 2-4
JP5:
1-3 & 2-4
JP8
Setting
Function
Pin 1-2
Short/Closed
Normal
Pin 2-3
Short/Closed
Clear CMOS
JP2, JP1, JP7, JP6: COM1/2/3/4 RS232 +5V/+12V Power
Setting
JP3, JP4, JP5: RS232/422/485 (COM1) Selection
COM1 is selectable for RS232, RS-422 and RS-485.
JP8: Clear CMOS Contents
Use JP8, a 3-pin header, to clear the CMOS contents.
Note that the ATX-power connector should be disconnected from the
motherboard before clearing CMOS.
10
MB941 User’s Manual
INSTALLATIONS
Connectors on MB941
The connectors on MB941 allow you to connect external devices such as
keyboard, floppy disk drives, hard disk drives, printers, etc. The following
table lists the connectors on MB941 and their respective functions.
ATX1: 24-pin ATX Power Connector ............................................... 13
ATX2: ATX 12V Power Connector................................................... 13
DDRIII1: Channel A DDR3 Socket ................................................... 13
DDRIII2: Channel B DDR3 Socket ................................................... 13
FAN2: CPU Fan Power Connector .................................................... 13
FAN1: System Fan1 Power Connector ............................................... 13
FAN3: System Fan2 Power Connector ............................................... 15
CN1: PS/2 Keyboard and PS/2 Mouse Connectors............................. 15
CN2: COM1 RS232/RS422/RS485 Connector .................................. 15
CN3: Parallel Port Connector............................................................. 16
CN4: VGA CRT Connector ............................................................... 16
CN5: Audio Connector ................................ ...................................... 17
CN6: Gigabit RJ-45 &USB 0/1 Connector ......................................... 17
CN7: Gigabit RJ-45 &USB 2/3 Connector ......................................... 17
CN8, CN9, CN10, CN11: SATA HDD Connectors ........................... 17
J1: COM2/RS232 Serial Port ............................................................. 17
J2: For LPC I/F Adaptor Card ........................................................... 17
J3: Digital I/O Connector (4 in, 4 out)................................................ 18
J4: COM3, COM4 Serial Port (DF11 Connector) .............................. 18
J5: Compact Flash Socket .................................................................. 18
J6: Audio CD-In Connector ............................................................... 18
J7: Audio Front Header ..................................................................... 19
J8: System Function Connector .......................................................... 19
J9: USB4/USB5 Connector ............................................................... 21
J10: USB6/USB7 Connector.............................................................. 21
J11: SPI Debug Tools Port (Factory use only) .......................................... 21
PCI1, PCI2: PCI Slot ......................................................................... 21
PCIE1: x16 PCI Express Slot ............................................................ 21
PCIE2: x1 PCI Express Slot .............................................................. 21
MB941 User’s Manual 11
INSTALLATIONS
DDRⅢ 2
DDRⅢ 1
Connector Locations on MB941
ATX1: 24-pin ATX Power Connector
ATX2: ATX 12V Power Connector
DDRIII1: Channel A DDR3 Socket
DDRIII2: Channel B DDR3 Socket
FAN2: CPU Fan Power Connector
FAN1: System Fan1 Power Connector
FAN3: System Fan2 Power Connector
CN1: PS/2 Keyboard and PS/2 Mouse
Connectors
CN2: Serial Ports(COM1)
CN3: Parallel Port Connector
CN4: VGA CRT Connector
CN5: Audio Connector
CN6: GbE RJ-45 and USB0/1 Connector
CN7: GbE RJ-45 and USB2/3 Connector
CN11, CN9, CN10, CN8: SATA0/1/2/3
Connector
12
MB941 User’s Manual
J1: COM2/RS232 Serial Port (DF11
Connector)
J2: For LPC I/F Adaptor Card
J3: Digital I/O Connector (4 in, 4 out)
J4: COM3, COM4 Serial Port (DF11
Connector)
J5: Compact Flash Connector
J6: Audio CD-IN Header
J7: Audio Front Header
J8: System Function Connector
J9, J10: USB 4/5/6/7 Connector
J11: SPI Debug Tools Port (Factory use only)
PCI1, PCI2: PCI Slot
PCIE1: x16 PCI Express Slot
PCIE2: x1 PCI Express Slot
Signal Name
Pin #
Pin #
Signal Name
3.3V
13 1 3.3V
-12V
14 2 3.3V
Ground
15 3 Ground
PS-ON
16 4 +5V
Ground
17 5 Ground
Ground
18 6 +5V
Ground
19 7 Ground
-5V
20 8 Power good
+5V
21 9 5VSB
+5V
22
10
+12V
+5V
23
11
+12V
Ground
24
12
+3.3V
Signal Name
Pin #
Pin #
Signal Name
+12V
5 1 Ground
+12V
6 2 Ground
+12V
7 3 Ground
+12V
8 4 Ground
Pin #
Signal Name
1
Ground
2
+12V
3
Rotation detection
4
Control
Pin #
Signal Name
1
Ground
2
+12V
ATX1: 24-pin ATX Power Connector
ATX2: ATX 12V Power Connector
This connector supplies the CPU operating voltage.
INSTALLATIONS
DDRIII1: Channel A DDR3 Socket
DDRIII2: Channel B DDR3 Socket
FAN2: CPU Fan Power Connector
FAN1: System Fan1 Power Connector
MB941 User’s Manual 13
INSTALLATIONS
3
Rotation detection
14
MB941 User’s Manual
INSTALLATIONS
Mouse (top)
Keyboard (bottom)
Keyboard
Signal
Pin #
Mouse
Signal
Keyboard data
1
Mouse data
N.C.
2
N.C.
GND
3
GND
5V
4
5V
Keyboard clock
5
Mouse clock
N.C.
6
N.C.
Pin #
Signal Name
RS-232
R2-422
RS-485
1
DCD
TX-
DATA-
2
RX
TX+
DATA+
3
TX
RX+
NC
4
DTR
RX-
NC
5
Ground
Ground
Ground
6
DSR
NC
NC
7
RTS
NC
NC
8
CTS
NC
NC
9
RI
NC
NC
10
NC
NC
NC
Pin #
Signal Name
1
Ground
2
+12V
3
NC
FAN3: System Fan2 Power Connector
CN1: PS/2 Keyboard and PS/2 Mouse Connectors
CN2: COM1 RS232/RS422/RS485 Connector
[
MB941 User’s Manual 15
INSTALLATIONS
CN3 Parallel Port
Signal Name
Pin #
Pin #
Signal Name
Line printer strobe
1
14
AutoFeed
PD0, parallel data 0
2
15
Error
PD1, parallel data 1
3
16
Initialize
PD2, parallel data 2
4
17
Slin
PD3, parallel data 3
5
18
Ground
PD4, parallel data 4
6
19
Ground
PD5, parallel data 5
7
20
Ground
PD6, parallel data 6
8
21
Ground
PD7, parallel data 7
9
22
Ground
ACK, acknowledge
10
23
Ground
Busy
11
24
Ground
Paper empty
12
25
Ground
Select
13
N/A
N/A
Signal Name
Pin #
Pin #
Signal Name
Red
1 2 Green
Blue
3 4 N.C.
GND
5 6 GND
GND
7 8 GND
VCC
9
10
GND
N.C.
11
12
DDCDATA
HSYNC
13
14
VSYNC
DDCCLK
15
CN3: Parallel Port Connector
CN3 is a DB-25 external connector on top of the VGA and serial ports.
CN4: VGA CRT Connector
CN4 is a DB-15 VGA connector. The following table shows the pin-out
assignments of this connector.
16
MB941 User’s Manual
Pin #
Signal Name
1
Ground
2
TX+
3
TX-
4
Ground
5
RX-
6
RX+
7
Ground
Signal Name
Pin #
Pin #
Signal Name
DCD, Data carrier detect
1 2 RXD, Receive data
TXD, Transmit data
3 4 DTR, Data terminal ready
GND, ground
5 6 DSR, Data set ready
RTS, Request to send
7 8 CTS, Clear to send
RI, Ring indicator
9
10
Not Used
CN5: Audio Connector
INSTALLATIONS
CN6: Gigabit RJ-45 &USB 0/1 Connector
CN7: Gigabit RJ-45 &USB 2/3 Connector
CN8, CN9, CN10, CN11: SATA HDD Connectors
J1: COM2/RS232 Serial Port
J2: For LPC I/F Adaptor Card
MB941 User’s Manual 17
Loading...