Global American Inc. 2808040 User manual

2808040 User’s Manual
Version 1.0
Mini-ITX Motherboard with Socket LGA 775

Copyrights
This document is copyrighted and all rights are reserved. It does not allow any non
authorization in copied, photocopied, translated or reproduced to any electronic or
machine readable form in whole or in part without prior written consent from the
manufacturer.
In general, the manufacturer will not be liable for any direct, indirect, special, incidental
or consequential damages arising from the use of inability to use the product or
documentation, even if advised of the possibility of such damages. The manufacturer
keeps the rights in the subject to change the contents of this document without prior
notices in order to improve the function design, performance, quality and reliability. The
author assumes no responsibility for any errors or omissions, which may appear in this
document, nor does it make a commitment to update the information contained herein.
Trademarks
Intel is a registered trademark of Intel Corporation.
Award is a registered trademark of Award Software, Inc.
All other trademarks, products and or product's name mentioned herein are mentioned
for identification purposes only, and may be trademarks and/or registered trademarks of
their respective companies or owners.

iii
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 2808040......................................................11
Appendix........................................................... 21
A. I/O Port Address Map................................................... 21
B. Interrupt Request Lines (IRQ)...................................... 22
C. Watchdog Timer Configuration.................................... 23

iv
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1
Introduction
Checklist
Your 2808040 Core 2 Duo motherboard package should include the items
listed below:
•The 2808040 motherboard
•This User’s manual
•1 x I/O shield
•1 x IDE cable
•1 x SATA cable
•1 CD containing the following:
•Chipset Drivers
•Flash Memory Utility

2
Product Description
The 2808040 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’s Q35 Express chipset and it comes with
two single-channel DDR2 memory slots and 4GB memory
capacity for faster system responsiveness and support of 64-bit
computing. The new GAI motherboards are aimed for high
performance PCs in the digital, communications and industrial
sector.
On board is one PCI Express x16 slot that offers up to 3.5X the
bandwidth over traditional PCI architecture to support the latest
high-performance graphics cards. Dual independent display
comes to life with the onboard Intel®Q35 integrated graphics for
CRT and an optional SDVO card supporting either an LVDS or
DVI display interface. LAN functionality is supported with a 10/100
Ethernet controller or with two Gigabit Ethernet controllers.
2808040 is expandable, with the use of an adaptor card, 1008097, to
support 2 or 4 serial ports, or 1008098 to support TPM 1.2 security
function. Other useful features on the board include two SATA II
ports, one eSATA port, eight USB 2.0 interface, watchdog timer,
digital I/O and two serial ports. Board dimensions are 170mm by
170mm. (Note: CPU power consumption – under 95watt
recommended.)
2808040 FEATURES
yIntel®Q35 Express Chipset Based
ySupport LGA775 Intel®Core™2 Duo/Quad CPU
ySupport up to 1333MHz FSB
ySupport up to 4GB DDRII 800/667 memory
y1 x PCI Express (x16)
ySupport one 10/100 or two Gigabit LAN on board
y2x SATA II, 1x eSATA, 1x IDE, 8x USB 2.0,
2x COM, 7.1Ch.HD Audio

3
Specifications
Form Factor Mini ITX (for performance desktop market)
Processor Socket LGA775, Supports theIntel Core 2 Duo and Intel Core2 Quad
processors, and Intel Celeron 400 (Conroe-L) Sequence processor.
FSB 800/1066/1333 MHz
Chipset Intel Q35 Chipset:
•Intel Q35 Graphic Memory Controller Hub (GMCH)
•Intel ICH9/ICH9R I/O Controller Hub
BIOS •Award BIOS: footprint from SPI, supports ACPI, SMBIOS
Memory •2 x 240-pin DDRII 667/800 DIMM sockets, support one channels,
•Supports max. 4 GB system memory
Video Intel Q35 integrated graphic subsystem (GMA3100), dual
independent display available through on-board VGA and PCI-e
x16 expansion adapter (DVI or LVDS) or VGA card
LAN LAN1: dual Footprint support option:
•Intel 82566DM Nineveh 10/100/1000 LAN
•Intel 82562V Ekron-N 10/100
LAN2: Marvell 88E8053 PCI-express Gigabit LAN controller x1
USB Intel ICH9/ICH9R built-in USB 2.0 host controller, supports 8 ports:
•4ports in the rear I/O region
•4 ports with on-board headers
SATA II Intel ICH9 built-in SATA II controller (3.0Gb/sec) w/ 2 ports. ICh9R
Built-in raid 0,1 or AHCI (for eSATA)
IDE Jmicron JM368 (PCI-e to PATA) x1 for 1 PATA channel
Audio Intel ICH9/ICH9R built-in high definition audio w/ Realtek ALC888
Codec
LPC I/O Winbond W83627EHG: COM1 (RS232), COM2 (RS232/422/485) &
Hardware monitor
Hardware Monitor •Two fan connectors with tachometer support
•CPU fan connector supports 4-wire fan with PWM control
•Supports three thermal diodes (CPU die + 2 on-board)
•Voltage monitoring for VCC (processor), 3.3V, 5V, and 12V
Edge Connectors •Mini-DIN x 1 for PS/2 KB & MS
•Esata connectorx1(for ICH9R)
•DB9 + DB15 stack connector x 1 for COM1 & VGA
•RJ45 + dual USB stack connector x2 for LAN1~2 and USB1~4
•Triple (3x1) phone jack connector x1 for High-Definition Audio
On Board Headers /
Connectors •Standard SATA (7-pin shrouded vertical) connector x2
•4x2 pins pin-header x2 for USB 5-6,7-8.
•5x2 pins x1 for COM2 (RS232/422/485)
•5x2 pins pin-header x1 for Digital I/O
•5X2 pins pin-headerx1 for audio front.
•40 pins box-header x1 for IDE
•4 pins pin--header x1 for CPU fan & system fan
•3 pins pin--header x2 for system fan
Expansion PCI-express (x16) slot x1
8x2 pins pin header x1 for adaptor card:
-1008097 (2 or 4 serial ports)
-1008098 (TPM function)
Watchdog Timer Yes (256 segments, 0, 1, 2…255 sec/min)
Digital IO 4 in and 4 Out
Other LAN Wakeup
Power Connector 24 pins ATX main power + 4 pins 12V
System Voltage +5V, +3.3V, +12V, -12V & 5VSB
Board Size 170 x 170mm

Board Dimensions
4

5
Installations
This section provides information on how to use the jumpers and
connectors on the 2808040 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 2808040............................................................... 11

Installing the CPU
The 2808040 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 ATX2 and
ATX1 power connectors. ATX2 is a 24-pin power connector and ATX1
is a 4-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

7
Installing the Memory
The 2808040 motherboard supports four DDR2 memory sockets for a
maximum total memory of 4GB in DDR memory type. It supports
DDR2 667/800MHz.
Basically, the system memory interface has the following features:
Supports two 64-bit wide DDR data channels
Available bandwidth up to 6.4GB/s (DDR2 800) for two-channel
mode.
Supports 256Mb, 512Mb, 1Gb DDR2 technologies.
Supports only x8, x16, DDR2 devices with four banks
Supports only unbuffered DIMMs
Supports opportunistic refresh
Up to 32 simultaneously open pages (four per row, four rows
maximum)

8
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 2808040..............................................................9
JP7: Clear CMOS Contents .................................................................10
JP1, JP2, JP3: RS232/422/485 (COM2) Selection ..............................10

Jumper Locations on 2808040
Jumper Locations on 2808040........................................................ 9
JP7: Clear CMOS Contents.......................................................... 10
JP1, JP2, JP3: RS232/422/485 (COM2) Selection....................... 10
9

JP7: Clear CMOS Contents
Use JP7, a 3-pin header, to clear the CMOS contents. Note that the
ATX-power connector should be disconnected from the motherboard
before clearing CMOS.
JP7 Setting Function
Pin 1-2
Short/Closed Normal
Pin 2-3
Short/Closed Clear CMOS
JP1, JP2, JP3: RS232/422/485 (COM2) Selection
COM1 is fixed for RS-232 use only.
COM2 is selectable for RS232, RS-422 and RS-485.
1008097: COM3 and COM4 are fixed for RS-232 use only. The following
table describes the jumper settings for COM2 selection.
COM2
Function RS-232 RS-422 RS-485
Jumper
Setting
(pin closed)
JP3:
1-2
JP1:
3-5 & 4-6
JP2:
3-5 & 4-6
JP3:
3-4
JP1:
1-3 & 2-4
JP2:
1-3 & 2-4
JP3:
5-6
JP1:
1-3 & 2-4
JP2:
1-3 & 2-4
10

11
Connectors on 2808040
The connectors on 2808040 allows you to connect external devices such as
keyboard, floppy disk drives, hard disk drives, printers, etc. The
following table lists the connectors on 2808040 and their respective
functions.
ATX2: 24-pin ATX Power Connector............................................................. 13
ATX1: ATX 12V Power Connector ................................................................ 13
CPU_FAN1: CPU Fan Power Connector....................................................... 13
SYS FAN1, 2: System Fan Power Connectors................................................ 13
CN4: PS/2 Keyboard and PS/2 Mouse Connectors ......................................... 14
CN2, J3: COM1/2 Serial Ports......................................................................... 14
CN1: VGA CRT Connector............................................................................. 15
CN6: Marvell 88E8053 PCI-express Gigabit LAN and USB2/3 Connector ... 15
CN7: Intel 82562V 10/100 or 82566DM GbE RJ-45 and USB0/1 Connector 15
CN5: Audio Connector.................................................................................... 15
CN3: eSATA HDD Connector ........................................................................ 15
CN9, CN8: SATA HDD Connectors............................................................... 16
IDE1: Primary IDE Connectors....................................................................... 16
J2: Digital I/O Connector (4 in, 4 out)............................................................. 17
J4: For LPC I/F Adaptor Card ......................................................................... 17
Supports 1008097.th Fintek F81216, 2 or 4 serial ports.................................. 17
J5: Audio Front Header ................................................................................... 17
J6, J7: USB4/5, USB6/7 Connectors ............................................................... 17
J8: Power LED................................................................................................. 17
J9: SPDIF Out Connector................................................................................ 18
J10: System Function Connector..................................................................... 18
PCIE_1: x16 PCI Express Slot ........................................................................ 18
1008097 LPC Serial Ports Adapter (option)..................................................... 19

Connector Locations on 2808040
ATX2: 24-pin ATX Power Connector ...................................................................................................13
ATX1: ATX 12V Power Connector.......................................................................................................13
CPU_FAN1: CPU Fan Power Connector..............................................................................................13
SYS FAN1, 2: System Fan Power Connectors.......................................................................................13
CN4: PS/2 Keyboard and PS/2 Mouse Connectors ...............................................................................14
CN2, J3: COM1/2 Serial Ports ...............................................................................................................14
CN1: VGA CRT Connector....................................................................................................................15
CN6: Marvell 88E8053 PCI-express Gigabit LAN and USB2/3 Connector.........................................15
CN7: Intel 82562V 10/100 or 82566DM GbE RJ-45 and USB0/1 Connector .....................................15
CN5: Audio Connector...........................................................................................................................15
CN3: eSATA HDD Connector...............................................................................................................15
CN9, CN8: SATA HDD Connectors......................................................................................................16
IDE1: Primary IDE Connectors..............................................................................................................16
J2: Digital I/O Connector (4 in, 4 out) ...................................................................................................17
J4: For LPC I/F Adaptor Card ................................................................................................................17
Supports 1008097 with Fintek F81216, 2 or 4 serial ports....................................................................17
J5: Audio Front Header ..........................................................................................................................17
J6, J7: USB4/5, USB6/7 Connectors......................................................................................................17
J8: Power LED........................................................................................................................................17
J9: SPDIF Out Connector.......................................................................................................................18
J10: System Function Connector............................................................................................................18
PCIE_1: x16 PCI Express Slot...............................................................................................................18
11008097 LPC Serial Ports Adapter (option)...........................................................................................19
12

ATX2: 24-pin ATX Power Connector
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
ATX1: ATX 12V Power Connector
This connector supplies the CPU operation voltage
Pin # Signal Name
1 Ground
2 Ground
3 +12V
4 +12V
CPU_FAN1: CPU Fan Power Connector
Pin # Signal Name
1 Ground
2 +12V
3 Sense
4 Control
SYS FAN1, 2: System Fan Power Connectors
Pin # Signal Name
1 Ground
2 +12V
3 Sense
13

14
CN4: PS/2 Keyboard and PS/2 Mouse Connectors
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.
CN2, J3: COM1/2 Serial Ports
CN2 (COM1) is a DB-9 connector, while J3 is a COM pin-header
connector.
Signal Name Pin # Pin # Signal Name
DCD, Data carrier detect 1 6 DSR, Data set ready
RXD, Receive data 2 7 RTS, Request to send
TXD, Transmit data 3 8 CTS, Clear to send
DTR, Data terminal ready 4 9 RI, Ring indicator
GND, ground 5 10 Not Used
J3: COM2 is jumper selectable for RS-232, RS-422 and RS-485.
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

CN1: VGA CRT Connector
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
CN6: Marvell 88E8053 PCI-express Gigabit LAN and USB2/3
Connector
CN7: Intel 82562V 10/100 or Intel 82566DM GbE RJ-45 and
USB0/1 Connector
Note: 10/100 LAN for 2808040A; Dual Gigabit LAN for 2808040B, C
15
CN5: Audio Connector
CN4 is a 3-jack audio connector
CN3: eSATA HDD Connector
Pin # Signal Name
1 Ground
2 TX+
3 TX-
4 Ground
5 RX-
6 RX+
7 Ground

CN9, CN8: SATA HDD Connectors
Pin # Signal Name
1 Ground
2 TX+
3 TX-
4 Ground
5 RX-
6 RX+
7 Ground
IDE1: Primary IDE Connectors
IDE1
Signal Name Pin # Pin # Signal Name
Reset IDE 1 2 Ground
Host da
t
a 7 3 4 Host data 8
Host data 6 5 6 Host data 9
Host data 5 7 8 Host data 10
Host data 4 9 10 Host data 11
Host data 3 11 12 Host data 12
Host data 2 13 14 Host data 13
Host data 1 15 16 Host data 14
Host data 0 17 18 Host data 15
Ground 19 20 Protect
p
in
DR
Q
0 21 22 Ground
Host IOW 23 24 Ground
Host IOR 25 26 Ground
IOCHRDY 27 28 Host ALE
DACK0 29 30 Ground
IR
Q
14 31 32
N
o connec
t
Address 1 33 34
N
o connec
t
Address 0 35 36 Address 2
Chi
p
select 0 37 38 Chi
p
select 1
Activit
y
39 40 Ground
16