NX800LX
AMD® Geode LX800 500MHz Nano ITX Main Board
User’s Manual
Ver. 1.00
User’s Manual
Contents
LCD Inverter Connector (LCDB1).............................................................................................. 26
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NX800LX
Safety Information
Electrical safety
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To prevent electrical shock hazard, disconnect the power cable from the electrical
outlet before relocating the system.
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When adding or removing devices to or from the system, ensure that the power cables
for the devices are unplugged before the signal cables are connected. If possible,
disconnect all power cables from the existing system before you add a device.
Before connecting or removing signal cables from the motherboard, ensure that all
power cables are unplugged.
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Seek professional assistance before using an adapter or extension cord. These
devices could interrupt the grounding circuit.
Make sure that your power supply is set to the correct voltage in your area. If you are
not sure about the voltage of the electrical outlet you are using, contact your local
power company.
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If the power supply is broken, do not try to fix it by yourself. Contact a qualified service
technician or your retailer.
Operation safety
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Before installing the motherboard and adding devices on it, carefully read all the
manuals that came with the package.
Before using the product, make sure all cables are correctly connected and the power
cables are not damaged. If you detect any damage, contact your dealer immediately.
To avoid short circuits, keep paper clips, screws, and staples away from connectors,
slots, sockets and circuitry.
Avoid dust, humidity, and temperature extremes. Do not place the product in any area
where it may become wet.
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Place the product on a stable surface.
If you encounter technical problems with the product, contact a qualified service
technician or your retailer.
The symbol of the crossed out wheeled bin indicates that the product
(electrical and electronic equipment) should not be placed in
municipal waste. Check local regulations for disposal of electronic
products.
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User’s Manual
Technical Support
If a problem arises with your system and no solution can be obtained from the user’s
manual, please contact your place of purchase or local distributor. Alternatively, please try
the following help resources for further guidance. Visit the BCM TW website for FAQ,
technical guide, BIOS updates, driver updates, and other information:
Conventions Used in This Guide
To make sure that you perform certain tasks properly, take note of the following symbols
used throughout this manual.
DANGER/WARNING: Information to prevent injury to yourself when
trying to complete a task.
CAUTION: Information to prevent damage to the components when
trying to complete a task.
IMPORTANT: Instructions that you MUST follow to complete a task.
NOTE: Tips and additional information to help you complete a task.
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Packing List
Before you begin installing your single board, please make sure that the following materials
have been shipped:
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1 x AMD LX800 Nano ITX Main board
1 x CD-ROM contains the followings:
－ User’s manual (this manual in PDF file)
－ Drivers
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2 x Serial port cable
1 x 6 to 20 pin power cable
1 x Y cable
1 x IDE HDD cable
1 x Startup Manual
If any of the above items is damaged or missing, please contact your
retailer.
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NX800LX
Specifications Summary
Onboard AMD Geode LX800 500 MHz @ 0.9 W with 128K L2 Cache &
1
64K L1 Cache CPU
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3
4
5
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7
AMD Geode CS5536 Companion Chip
One 200-pin SODIMM up to 1GB DDR 400 SDRAM
24-bit TTL, 18-bit LVDS
Features
Realtek RTL8139DL 10/100Mbps LAN
1 Mini PCI, Type I/II CF
2 COM, 4 USB 2.0
System
CPU
Onboard AMD Geode LX800 @ 0.9 W with 128K L2 Cache or 64K L1 Cache
Award 4 Mb Flash BIOS
BIOS
AMD Geode LX800/CS5536
System Chipset
I/O Chipset
Memory
Winbond W83627HG-AW
1 x 200-pin SODIMM socket supports up to 1 GB DDR 400 SDRAM
1 x CompactFlash Type I/II socket
SSD
Reset: 1 sec.~255 min. and 1 sec. or 1 min./step
Monitoring CPU temperature, voltage, and cooling fan status. Auto throttling
control when CPU overheats
Watchdog Timer
H/W Status Monitor
Expansion Slots
1 x Mini PCI
I/O
1 x EIDE (DMA 33), 2 x RS-232, 1 x K/B, 1 x Mouse
115k bps, IrDA 1.0 compliant
MIO
IrDA
USB
DIO
4 x USB 2.0 ports
8-bit General Purpose I/O for 4 DI and 4 DO
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User’s Manual
Specifications Summary
I/O
1 x 6Pin ATX compatible power connector
1x LVDS 20Pin Panel Connector
1x TTL 40Pin Panel Connector
1x Front Panel Connector
1 x 44Pin IDE Connector
2 x COM Port Connector
1 x LCD Invert Power Connector
1 x 3Pin FAN Connector
1 x ext. USB Connector
1 x ext Line-in Connector
1 x PS/2 Keyboard+Mouse (through Y-Cable)
1 x VGA port
Internal I/O
2 x USB 2.0/1.1
Back Panel
1 x RJ45 port
1 x Audio Jack for Mic-in
1 x Audio Jack for Line-out
Display
AMD LX800 integrated graphics controller supports up to 32 MB video memory
CRT mode: 1024 x 768 @ 32 bpp (85 Hz)
Display Memory
Resolution
TFT mode: 1600 x 1200 @ 32 bpp (100Hz)
AMD Geode LX800 supports 18-bit Single channel LVDS
VGA/LCD interface
Audio
AMD Geode CS5536
Chipset
Realtek ALC655 supports 2 CH AC97 Audio
Mic in, Line in, Line out
Audio Codec
Audio Interface
Ethernet
Realtek RTL8139DL 10/100Mbps LAN
LAN1
Mechanical & Environmental
ATX
Power Type
0 ~ 60°C (32 ~ 140°F)
Operating Temperature
Operating Humidity
Size (L x W)
0% ~ 90% relative humidity, non-condensing
4.72" x 4.72" (120 mm x 120 mm)
0.88 lbs (0.4 Kg)
Weight
* Specifications are subject to change without notice.
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User’s Manual
This chapter describes the motherboard
features and the new technologies
it supports.
Product
1
introduction
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Production Introduction
1.1 Before you Proceed
Take note of the following precautions before you install motherboard components or
change any motherboard settings.
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Unplug the power cord from the wall socket before touching any
component.
Use a grounded wrist strap or touch a safely grounded object or a
metal object, such as the power supply case, before handling
components to avoid damaging them due to static electricity
Hold components by the edges to avoid touching the ICs on
them.
Whenever you uninstall any component, place it on a grounded
antistatic pad or in the bag that came with the component.
Before you install or remove any component, ensure that the ATX
power supply is switched off or the power cord is detached from
the power supply. Failure to do so may cause severe damage to
the motherboard, peripherals, and/or components.
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User’s Manual
1.2 Motherboard Overview
Before you install the motherboard, study the configuration of your chassis to ensure that
the motherboard fits into it. Refer to the chassis documentation before installing the
motherboard.
Make sure to unplug the power cord before installing or removing the
motherboard. Failure to do so can cause you physical injury and
damage motherboard components.
1.2.1
Placement Direction
When installing the motherboard, make sure that you place it into the chassis in the correct
orientation. The edge with external ports goes to the rear part of the chassis as indicated in
the image below.
1.2.2
Screw Holes
Place four (4) screws into the holes indicated by circles to secure the motherboard to the
chassis.
Do not over tighten the screws! Doing so can damage the
motherboard.
Place this side towards the rear of the
chassis
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User’s Manual
1.3.1
Slots
Layout Content List
Label
Function
CompactFlash card connector
Note
Page
N/A
CF1
(Rear side)
SODIMM1
PCI1
200-pin DDR SDRAM DIMM socket (Rear side)
Mini PCI slot
N/A
N/A
Jumpers
Label
J3
Function
Note
Page
Clear CMOS
3 x 1 header, pitch 2.00mm
3 x 1 header, pitch 2.54mm
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LCDPJ1
LCD Backlight Brightness
Adjustment Connector
COMAJ1
COMAPJ1
COMBJ1
COMBPJ1
COM 1 RI/+5V selection
COM 1 +5V/+12V selection
COM 2 RI/+5V selection
COM 2 +5V/+12V selection
3 x 1 header, pitch 2.54mm
3 x 1 header, pitch 2.54mm
3 x 1 header, pitch 2.54mm
3 x 1 header, pitch 2.54mm
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Rear Panel Connector
Label
Function
Note
6-pin Mini-Din
Page
20
CN1
PS/2 keyboard and mouse
VGA port
VGA1
USB23
CN9
D-sub 15-pin, female
20
USB 2.0 connector x 2
RJ-45 Ethernet connector
Line-in / Line-out port
Microphone port
20
20
CN2
Phone jack
Phone jack
20
CN3
20
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Internal Connector
Label
Function
Note
Page
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21
21
22
22
22
23
24
24
25
25
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CFPJ1
CN5
CF power connector
3 x 2 header, pitch 2.54mm
3 x 2 header
ATX power connector
Power fan connector
SM Bus connector
CN7
3 x 1 wafer, pitch 2.54mm
4 x 1 wafer, pitch 2.00mm
5 x 2 header, pitch 2.00mm
5 x 2 header, pitch 2.00mm
5 x 2 header, pitch 2.00mm
5 x 1 header, pitch 2.00mm,
22 x 2 header, pitch 2.00mm
5 x 1 header, pitch 2.00mm
6 x 2 header, pitch 2.00mm
5 x 1 header, pitch 2.00mm
HIROSE DF13-20DP-1.25V
HIROSE DF13-40DP-1.25V
5 x 2 header, pitch 2.00mm
CN8
COMB1
COMB2
FPANEL1
IRB1
Serial port 1 in RS-232 mode
Serial port 2 in RS-232 mode
Front panel connector
IrDA connector
IDEB1
J1
Primary IDE connector
AC97 line in connector
GPIO connector
J2
LCDB1
LVDS1
TTL1
LCD inverter connector
LVDS connector
TTL connector
USBB1
USB 2.0 connector
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User’s Manual
1.4 Expansion Slots
In the future, you may need to install expansion cards. The following sub‑sections describe
the slots and the expansion cards that they support.
Make sure to unplug the power cord before adding or removing
expansion cards. Failure to do so may cause you physical injury and
damage motherboard components.
1.4.1
Installing an Expansion Card
1. Before installing the expansion card, read the documentation that came with it and
make the necessary hardware settings for the card.
2. Remove the system unit cover (if your motherboard is already installed in a chassis).
3. Remove the bracket opposite the slot that you intend to use. Keep the screw for later
use.
4. Align the card connector with the slot and press firmly until the card is completely
seated on the slot.
5. Secure the card to the chassis with the screw you removed earlier.
6. Replace the system cover.
1.4.2
Configuring an Expansion Card
After installing the expansion card, configure it by adjusting the software settings.
1. Turn on the system and change the necessary BIOS settings.
2. Assign an IRQ to the card if needed.
3. Install the software drivers for the expansion card.
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1.5 Jumpers
1.5.1
Clear CMOS (J3)
This jumper allows you to clear the Real Time Clock (RTC) RAM in CMOS. You can clear
the CMOS memory of date, time, and system setup parameters by erasing the CMOS RTC
RAM data. The onboard button cell battery powers the RAM data in CMOS, which include
system setup information such as system passwords. To erase the RTC RAM:
1. Turn OFF the computer and unplug the power cord.
2. Remove the onboard battery.
3. Move the jumper cap from pins 1-2 (default) to pins 2-3. Keep the cap on pins 2-3 for
about 5~10 seconds, then move the cap back to pins 1-2.
4. Re-install the battery.
5. Plug the power cord and turn ON the computer.
6. Hold down the <Del> key during the boot process and enter BIOS setup to re-enter
data.
Except when clearing the CMOS, never remove the cap on J3 jumper
default position. Removing the cap will cause system boot failure!
Normal (Default)
Clear RTC
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1.6 Connectors
1.6.1
Rear Panel Connectors
No
Label
Function
Description
1
CN1
PS/2 keyboard and
mouse connector
VGA port
The standard PS/2 DIN connector is for a
PS/2 keyboard and mouse
This 15-pin port is for a VGA monitor or
other VGA-compatible devices.
These two 4-pin Universal Serial Bus (USB)
ports are available for connecting USB 2.0
devices.
This port allows Gigabit connection to a
Local Area Network (LAN) through a
network hub. Refer to the table below for
the LAN port LED indications. The optional
10/100 Mbps LAN controller allows 10/100
Mbps connection to a Local Area Network
(LAN) through a network hub.
2
3
VGA1
USB23
USB 2.0 connector x 2
LAN (RJ-45) connector
4
CN9
ACT / LINK LED
Status Description
OFF / Y Linked
SPEED LED
Status
OFF
Description
10Mbps connection
B. Y
Activity
Green/Orange 100Mbps connection
5
6
CN3
CN2
Microphone port (Black) This port connects a microphone.
Line in / Line out port
(Black)
This port connects a headphone or a
speaker.
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User’s Manual
1.6.2
CF Power Connector (CFPJ1)
1.6.3
ATX Power Connector (CN5)
This connector is for ATX power supply plugs. The power supply plugs are designed to fit
this connector in only one orientation. Find the proper orientation and push down firmly until
the connector completely fit.
1.6.4
Power Fan Connector (CN7)
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User’s Manual
1.6.8
Front Panel Connector (FPANEL1)
This connector supports several chassis-mounted functions.
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System Power LED (2-pin PWRLED)
This 2-pin connector is for the system power LED. Connect the chassis power LED
cable to this connector. The system power LED lights up when you turn on the system
power, and blinks when the system is in sleep mode.
ATX Power Button/Soft-off Button (2-pin PWRSW)
This connector is for the system power button. Pressing the power button turns the
system on or puts the system in sleep or soft-off mode depending on the BIOS
settings. Pressing the power switch for more than four seconds while the system is ON
turns the system OFF.
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Hard Disk Drive Activity LED (2-pin HDLED)
This 2-pin connector is for the HDD Activity LED. Connect the HDD Activity LED cable
to this connector. The IDE LED lights up or flashes when data is read from or written to
the HDD.
Reset Button (2-pin RESET)
This 2-pin connector is for the chassis-mounted reset button for system reboot without
turning off the system power.
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1.6.13 LCD Inverter Connector (LCDB1)
For inverters with adjustable Backlight function, it is possible to control
the LCD brightness through the VR signal controlled by LCDPJ1.
Please see the LCDPJ1 section for detailed circuitry information.
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Signal Description
Signal
Signal Description
Vadj=0.75V ~ 4.25V
VR
(Recommended: 4.7KΩ, > 1/16W)
TFTxBLKEN
LCD backlight ON/OFF control signal
1.6.14 LVDS Connector (LVDS1)
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User’s Manual
1.6.15 TTL Connector (TTL1)
1.6.16 USB 2.0 Connector (USBB1)
These connectors are for USB 2.0 ports. Connect the USB/GAME module cable to any of
these connectors, then install the module to a slot opening at the back of the system
chassis. These USB connectors comply with USB 2.0 specification that supports up to 480
Mbps connection speed.
Never connect a 1394 cable to the USB connectors. Doing so will
damage the motherboard!
The USB module is purchased separately.
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