AMD GEODE NX800LX User Manual

NX800LX  
AMD® Geode LX800 500MHz Nano ITX Main Board  
User’s Manual  
Ver. 1.00  
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.  
NX800LX 5  
 
NX800LX  
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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User’s Manual  
Revision History  
Revision  
Revision History  
Date  
V 1.0  
First release for PCB 1.00  
September 04, 2007  
NX800LX 7  
 
NX800LX  
Specifications Summary  
Onboard AMD Geode LX800 500 MHz @ 0.9 W with 128K L2 Cache &  
1
64K L1 Cache CPU  
2
3
4
5
6
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.  
NX800LX 9  
NX800LX  
Block Diagram  
10  
 
User’s Manual  
This chapter describes the motherboard  
features and the new technologies  
it supports.  
Product  
1
introduction  
NX800LX 11  
NX800LX  
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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NX800LX  
1.3 Motherboard Layout  
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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  
18  
19  
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  
19  
19  
19  
19  
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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NX800LX  
Internal Connector  
Label  
Function  
Note  
Page  
21  
21  
21  
22  
22  
22  
23  
24  
24  
25  
25  
26  
26  
27  
27  
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 subsections 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.  
NX800LX 17  
 
NX800LX  
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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User’s Manual  
1.5.2  
1.5.3  
1.5.4  
LCD Backlight Brightness Adjustment Connector (LCDPJ1)  
+5V (Default)  
+3.3V  
COM1/COM2 RI/+5V Selection (COMAJ1, COMBJ1)  
Ring (Default)  
+5V  
COM1/COM2 +5V/+12V Selection (COMAPJ1, COMBPJ1)  
+5V (Default)  
+12V  
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NX800LX  
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)  
NX800LX 21  
 
NX800LX  
1.6.5  
1.6.6  
1.6.7  
SM Bus Connector (CN8)  
Serial port 1 in RS-232 mode (COMB1)  
Serial port 2 in RS-232 mode (COMB2)  
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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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NX800LX  
1.6.9  
IrDA Connector (IRB1)  
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Signal Description  
Signal  
IRRX  
IRTX  
Signal Description  
Infrared Receiver Input  
Infrared Transmitter Output  
1.6.10 Primary IDE Connector (IDEB1)  
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Orient the red markings (usually zigzag) on the IDE cable to Pin  
1.  
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User’s Manual  
1.6.11 AC97 Line-in Connector (J1)  
1.6.12 GPIO Connector (J2)  
NX800LX 25  
 
NX800LX  
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: 4.7K, > 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.  
NX800LX 27  
 

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