IBASE Technology MB875 User manual

MB875
Socket 479 Pentium®M with
Intel®852GM Chipset
Custom Motherboard
for 1U Rackmount
USER’S MANUAL
Version 1.0

ii MB875 User’s Manual
Acknowledgments
Award is a registered trademark of Award Software International,
Inc.
PS/2 is a trademark of International Business Machines
Corporation.
Intel and Pentium M are registered trademarks 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.

MB875 User’s Manual iii
Table of Contents
Introduction.......................................................1
Product Description.............................................................1
Checklist..............................................................................2
MB875 Specifications.........................................................3
Board Dimensions...............................................................4
Installations.......................................................5
Installing the CPU...............................................................6
Installing the Memory.........................................................7
Setting the Jumpers .............................................................8
Connectors on MB875 ......................................................13
BIOS Setup.......................................................21
Drivers Installation......................................44
Intel Chipset Software Intallation Utility..........................45
VGA Drivers Installation ..................................................47
AC97 Codec Audio Driver Installation.............................49
Intel PRO LAN Drivers Installation..................................50
SATA Drivers Installation ................................................51
Appendix...........................................................54
A. I/O Port Address Map...................................................54
B. Interrupt Request Lines (IRQ)......................................55
C. Watchdog Timer Configuration....................................56
D. Digital I/O Sample Code..............................................60

The MB875 Motherboard
The MB875 Edge Connectors
iv MB875 User’s Manual

INTRODUCTION
MB875 User’s Manual 1
Introduction
Product Description
The MB875 is a versatile motherboard with four Gigabit Ethernets that is
designed for SOHO network security applications. Optimized for network
performance, this scalable platform is based on the Intel(R) 852GM chipset
and supports Intel(R) Pentium(R) M / Celeron(R) M processors of up to
2.0GHz speeds with front size bus of 400MHz. System memory can support
up to 2GB of DDR266 DIMM modules.
The MB875 uses the highly efficient Intel(R) 82541PI Ethernet providing
robust Gigabit networking with enhanced power management and consumes
less than 1.0W of power at Gigabit speeds. It supports intensive networking
communication required by firewall or VPN and offers bypass function
support on LAN1 and LAN2 to ensure high network availability.
To provide the best utilization and performance, the platform provides a
number storage interfaces including two IDE ports, two SATA ports, four
USB ports and a CompactFlash socket. One PCI 32-bit/33MHz Golden
Finger and one Mini-PCI slot are available for expansion. Furthermore, it
features status / alarm LED and a factory-default button that can be flexibly
configured to create features for ISVs. The MB875 motherboards are now
available to purchase.
MB875 FEATURES
•Supports Pentium(R) M / Celeron(R) M processors
•Up to 2.0GHz, 400MHz FSB
•DDR DIMM x 2, Max. 2GB
•Integrated VGA for CRT, shared memory
•Integrated four Gigabit Ethernet
•4 x COM, 4 x USB 2.0 ports, 2 x SATA, CF socket
•1 x PCI, 1 x Mini PCI slot, Watchdog timer

INTRODUCTION
2 MB875 User’s Manual
Checklist
Your MB875 package should include the items listed below.
•The MB875 Pentium®M Mini-ITX motherboard
•This User’s Manual
•1 CD containing chipset drivers and flash memory utility
•Option Cable
VGA4K
USB2K-4
PK1-2K
PK1K
PS2D

INTRODUCTION
MB875 User’s Manual 3
MB875 Specifications
[
CPU Type Micro-FCPGA Intel®Pentium®M processor
System Speed Up to 1.8GHz
CPU Frequency 400 MHz
CPU Socket Socket 479
Chipset 852GM chipset
BIOS Award BIOS; support ACPI function
Cache 1MB Level 2 (CPU integrated)
VGA Intel®82852GM built-in Intel®extreme Graphics 2
64MB shared with system
LAN Intel®82541PI Gigabit LAN controller, LAN1 & LAN2
Bypass
Memory Type Two DDR DIMM socket, supports up to 2GB DDR 266/333
SDRAM
LPC I/O Winbond W83627HG: COM1 (RS-232), COM2 (RS-232),
Hardware monitoring
Fintek 81216: COM3/4 (RS-232)
RTC/CMOS Intel®ICH4 built-in RTC with onboard lithium battery
Keyboard/Mouse PS/2 Keyboard/Mouse connectors
IDE Interface Two channels; supports Ultra DMA 33/66/100
USB 4 ports, USB 2.0
Watchdog Timer 256 segments (0, 1, 2,.. 255 sec/min)
Edge Connectors DB9 (male) x1 for COM1 (console port)
Dual USB stack connector x1 for USB 0, 1
RJ45 (w/ dual status LED) x 4
GPInput Switch x 1
Power LED x 1 (Green x 1 )
HDD Access LED x 1 (Red x 1 )
GPO LED 1/2 x 2 (Green x 1, Red x 1 )
On Board
Pin-Header /
Connectors
SATA connector x2 for SATA HDD
40 pins, 2.54mm, box-header x1 for IDE1
44 pins, 2.0mm, box-header x1 for IDE2
Compact flash type II socket x1 for CF on IDE2 bus
10 pins, 2.54mm, pin-header x1 for PS/2 KB/mouse
2 pins, 2.54mm, pin-header x 1 for Reset button.
Power Connector ATX power connector
Expansion Slots PCI (33MHz/32-bit) slot x1
Mini PCI x 1
Board size TBD

INTRODUCTION
Board Dimensions
4 MB875 User’s Manual

INSTALLATIONS
MB875 User’s Manual 5
Installations
This section provides information on how to use the jumpers and
connectors on the MB875 in order to set up a workable system. The
topics covered are:
Installing the CPU ................................................................................. 6
Installing the Memory ........................................................................... 7
Setting the Jumpers................................................................................ 8
Connectors on MB875......................................................................... 13

INSTALLATIONS
Installing the CPU
The MB875 board supports a Socket 479 processor socket for Intel®
Pentium®M or Celeron®M processors.
The processor socket comes with a screw to secure the processor. As
shown in the left picture below, loosen the screw first before inserting
the processor. Place the processor into the socket by making sure the
notch on the corner of the CPU corresponds with the notch on the inside
of the socket. Once the processor has slide into the socket, fasten the
screw. Refer to the figures below.
NOTE: Ensure that the CPU heat sink and the CPU top surface are in
total contact to avoid CPU overheating problem that would
cause your system to hang or be unstable.
6 MB875 User’s Manual

INSTALLATIONS
Installing the Memory
The MB875 board supports one DDR memory sockets for a maximum
total memory of 2GB in DDR memory type. The memory module
capacities supported are 128MB, 256MB, 512MB and 1GB. The
following table lists the supported DDR DIMM configurations. Intel®
852GM supports configurations defined in the JEDEC DDR DIMM
specification only. Non-JEDEC standard DIMMs such as double-sided
x16 DDR SDRAM DIMMs are not supported.
Installing and Removing Memory Modules
To install the DDR modules, locate the memory slot on the board and
perform the following steps:
1. Hold the DDR module so that the key of the DDR module align with
those on the memory slot.
2. Gently push the DDR module in an upright position until the clips of
the slot close to hold the DDR module in place when the DDR module
touches the bottom of the slot.
3. To remove the DDR module, press the clips with both hands.
LockLock
Lock Lock
DDR Module
MB875 User’s Manual 7

INSTALLATIONS
8 MB875 User’s Manual
Setting the Jumpers
Jumpers are used on MB875 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 on MB875 and their respective functions.
Jumper Locations on MB875..........................................................9
JP1: Clear CMOS Contents ..........................................................10
JP2: Watchdog Timer & LAN1/LAN2 Bypass Settings ..............10
JP4: Compact Flash Slave/Master ................................................10
JP5: Processor Operating Frequency............................................10
JP7: Power ON Setting.................................................................12

INSTALLATIONS
Jumper Locations on MB875
Jumpers on MB875...........................................................................Page
JP1: Clear CMOS Contents................................................................. 10
JP2: Watchdog Timer & LAN1/LAN2 Bypass Settings..................... 10
JP4: Compact Flash Slave/Master....................................................... 10
JP5: Processor Operating Frequency................................................... 10
JP7: Power ON Setting........................................................................ 12
MB875 User’s Manual 9

INSTALLATIONS
JP1: Clear CMOS Contents
Use JP1 to clear the CMOS contents. Note that the ATX-power
connector should be disconnected from the board before clearing
CMOS.
JP1 Setting Function
Pin 1-2
Short/Closed Normal
Pin 2-3
Short/Closed Clear CMOS
JP2: Watchdog Timer & LAN1/LAN2 Bypass Settings
JP2 Setting Function
Pin 1-3 & 2-4
Short
Ethernet default: Eth0 & Eth1 None Bypass.
System will bypass LANs upon the timeout
of Watchdog timer
Pin 1/2/3/4
Open
Ethernet default: Eth0 & Eth1 Bypass mode.
System will not bypass LANs upon the
timeout of Watchdog timer
Pin 1-2 & 3-4
Short System will reboot upon the timeout of
Watchdog timer. (Default)
JP4: Compact Flash Slave/Master
JP4 Compact Flash
Open Slave
Close Master
JP5: Processor Operating Frequency
JP5 CPU Operating
Frequency
Open 133MHz
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INSTALLATIONS
Close 100MHz (default)
MB875 User’s Manual 11

INSTALLATIONS
JP7: Power ON Setting
JP7 Setting Function
Pin 1-2
Short/Closed Power on by syste
m
button
Pin 2-3
Short/Closed Power on by power
supply AC on
12 MB875 User’s Manual

INSTALLATIONS
MB875 User’s Manual 13
Connectors on MB875
The connectors on MB875 allows you to connect external devices such
as keyboard, floppy disk drives, hard disk drives, printers, etc. The
following table lists the connectors on MB875 and their respective
functions.
Connector Locations on MB875 ......................................................... 14
J1: VGA CRT Connector .................................................................... 15
J2: COM2 Serial Port .......................................................................... 15
J4: USB Connector.............................................................................. 15
J5: SATA HDD Connector.................................................................. 16
J6: SATA HDD Connector.................................................................. 16
J7: COM3 Serial Port .......................................................................... 16
J8: COM4 Serial Port .......................................................................... 17
J9: Case Open Detect Header.............................................................. 17
J10: ATX Power Connector ................................................................ 17
J11: Keyboard / Mouse Connector...................................................... 18
J12: Power On & Reset Headers ......................................................... 18
SW1: Digital I/O Input Pin Switch...................................................... 18
LED1: Digital IO Output LED............................................................ 18
LED2: HDD / Power LED .................................................................. 18
CN2, CN3, CN4, CN5: LAN Connectors ........................................... 18
CN6: USB Connector.......................................................................... 18
CN7: COM1 Serial Port ...................................................................... 19
FAN1: CPU Fan Power Connector ..................................................... 19
FAN2/FAN3: System Fan Power Connector ...................................... 19
CN8: Compact Flash Connector.......................................................... 19
IDE1, IDE2: Primary and Secondary IDE Connectors ....................... 20

INSTALLATIONS
Connector Locations on MB875
Connectors on MB875..................................................................... Page
J1: VGA CRT Connector.....................................................................15
J2: COM2 Serial Port...........................................................................15
J4: USB Connector ..............................................................................15
J5: SATA HDD Connector..................................................................16
J6: SATA HDD Connector..................................................................16
J7: COM3 Serial Port...........................................................................16
J8: COM4 Serial Port...........................................................................17
J9: Case Open Detect Header ..............................................................17
J10: ATX Power Connector.................................................................17
J11: Keyboard / Mouse Connector ......................................................18
J12: Power On & Reset Headers..........................................................18
SW1: Digital I/O Input Pin Switch......................................................18
LED1: Digital IO Output LED ............................................................18
LED2: HDD / Power LED...................................................................18
CN2, CN3, CN4, CN5: LAN Connectors............................................18
CN6: USB Connector ..........................................................................18
CN7: COM1 Serial Port.......................................................................19
FAN1: CPU Fan Power Connector......................................................19
FAN2/FAN3: System Fan Power Connector.......................................19
CN8: Compact Flash Connector..........................................................19
IDE1, IDE2: Primary and Secondary IDE Connectors........................20
14 MB875 User’s Manual

INSTALLATIONS
J1: VGA CRT Connector
Signal Name Pin Pin Signal Name
R 1 2 +5V
G 3 4 GND
B 5 6 NC
NC 7 8 SPD1
GND 9 10 Hsync
GND 11 12 Vsync
GND 13 14 SPCLK
GND 15
J2: COM2 Serial Port
Pin # Signal Name (RS-232)
1 DCD, Data carrier detect
2 RXD, Receive data
3 TXD, Transmit data
4 DTR, Data terminal ready
5 Ground
6 DSR, Data set ready
7 RTS, Request to send
8 CTS, Clear to send
9 RI, Ring indicator
10 No Connect.
J4: USB Connector
Signal Name Pin # Pin # Signal Name
Vcc 1 5 Ground
USB2- 2 6 USB3+
USB2+ 3 7 USB3-
Ground 4 8 Vcc
MB875 User’s Manual 15

INSTALLATIONS
J5: SATA HDD Connector
Pin # Signal Name
1 Ground
2 TX+
3 TX-
4 Ground
5 RX-
6 RX+
7 Ground
J6: SATA HDD Connector
Pin # Signal Name
1 Ground
2 TX+
3 TX-
4 Ground
5 RX-
6 RX+
7 Ground
J7: COM3 Serial Port
Pin # Signal Name (RS-232)
1 DCD, Data carrier detect
2 RXD, Receive data
3 TXD, Transmit data
4 DTR, Data terminal ready
5 Ground
6 DSR, Data set ready
7 RTS, Request to send
8 CTS, Clear to send
9 RI, Ring indicator
10 No Connect.
16 MB875 User’s Manual