Asus CUW-AM User manual

CUW-AM User’s Manual 1
1. FEATURES
Specifications
1. FEATURES
1.1 The CUW-AM
The CUW-AM motherboard is carefully designed for the demanding PC user who
wants advanced features processed by the fastest processors.
1.1.1 Specifications
•Latest Intel Socket 370 Processor Support
Intel Pentium
®
III 100MHz FSB Coppermine core FC-PGA
Intel Celeron™ 66MHz FSB Mendocino core PPGA
•Latest Intel 810 Chipset! The 810 (GMCH+ICH) supports 66/100MHz FSB
and UltraDMA/66.
•IntegratedGraphics!Controller supports 3D hyper pipelined architecture, par-
allel data processing and compression, precise pixel interpolation, full 2D hard-
ware acceleration, and motion video acceleration.
•Custom Graphics Driver! You can gain about 12% performance over that of
the standard graphics driver (2D highend graphics WinMark) using the custom
graphics driver. The custom graphics driver also provides more features and
provides selection of higher refresh rates and resolutions.
•Versatile Memory Support! DRAM controller supports asymmetrical address-
ing and two DIMM sockets support Intel PC100-compliant SDRAMs (16, 32,
64, 128, or 256MB) up to 512MB. (supports a maximum of 4 sides)
• Latest Low Pin Count Multi-I/O: Provides two high-speed UART compatible
serial ports and one parallel port with EPP and ECP capabilities.
• Integrated IDE! Controller supports UltraDMA/66 up to 66MB/s, UltraDMA/
33 up to 33MB/s, and PIO Mode 4 up to 17MB/s.
•Firmware Hub! Provides security and other latest power computing features.
•Enhanced ACPI & Anti-Boot Virus Protection! Programmable BIOS (Flash
EEPROM),offering enhancedACPIforWindows98compatibility,built-infirm-
ware-based virus protection, and autodetection of most devices for virtually au-
tomatic setup.
•Highest Audio Quality! AC’97 DAC/ADC (software audio) built into the au-
dio codec reduces noise to improve audio quality and performance for a SNR
(signal to noise ratio) of +90dB. These features greatly improve voice synthesis
and recognition. If more quality is required, an optional onboard Crystal PCI
audio improves audio quality beyond software audio.
E546

2CUW-AM User’s Manual
Specifications
1. FEATURES
1. FEATURES
1.1.2 Performance
•UltraPerformance! Onboard IDE Bus Master controller with two connectors
that support four IDE devices in two channels. Supports UltraDMA/66,
UltraDMA/33 (IDE DMA Mode 2), PIO Modes 3 & 4, and supports Enhanced
IDE devices, such as Tape Backup, CD-ROM, CD-R/RW, and LS-120 drives.
• Dual Speeds! CPU frequency can operate at either 66MHz or 100MHz while
system memory operates at 100MHz. This asynchronous design can optimize the
VGA performance under shared memory configuration.
• DoubleorQuadrupletheIDETransferSpeed!IDEtransfers using UltraDMA/
33 Bus Master IDE can handle rates up to 33MB/s and up to 66MB/s using
UltraDMA/66 technology. The best of all is that these new technology is com-
patible with existing ATA-2 IDE specifications so there is no need to upgrade
current IDE devices or cables.
•Concurrent PCI! Concurrent PCI allows multiple PCI transfers from PCI mas-
ter buses to memory to CPU.
• SDRAM Optimized Performance! ASUS smart series motherboards support
the new generation memory, Synchronous Dynamic Random Access Memory
(SDRAM), which increases the data transfer rate to 800MB/s max using PC100
SDRAM.
• ACPIReady!ACPI provides more Energy Saving Features for future operating
systems (OS) supporting OS Direct Power Management (OSPM) functionality.
With these features implemented in the OS, PCs can be ready around the clock,
yet satisfy all the energy saving standards. To fully utilize the benefits of ACPI,
an ACPI-supported OS such as Windows 98 must be used.
•Extreme Graphics! The integrated motion compensation allows for smooth
MPEG1 or MPEG2 video playback. Fast 3D graphics engine allows for an ex-
citing gameplay experience.

CUW-AM User’s Manual 3
1. FEATURES
Specifications
1. FEATURES
1.1.3 Intelligence
• Auto Fan Off: The system fans will power off automatically even in standby
mode. This function reduces both energy consumption and system noise, and is
an important feature in implementing silent PC systems.
• Dual Function Power Button: Pushing the power button for less than 4 sec-
onds when the system is in the working state places the system into one of two
states: sleep mode or soft-off mode, depending on the BIOS or OS setting. When
the power button is pressed for more than 4 seconds, the system enters the soft-
off mode regardless of the BIOS setting.

4CUW-AM User’s Manual
2. HARDWARE SETUP
2.1 CUW-AM Motherboard Layout
Motherboard Layout
2. H/W SETUP
SECONDARY IDEPRIMARY IDE
PANEL
WOL_CON
FLOPPY
01
DIMM Socket 2 (64/72-bit, 168-pin module)
DIMM Socket 1 (64/72-bit, 168-pin module)
Row
23
01
COM1
PARALLEL PORT
VGA
PS2KBMS
T: Mouse
B: Keyboard
PS_FAN
Intel 810
Graphics &
Memory
Controller
Hub (GMCH)
LCDTV
Intel I/O
Controller
Hub (ICH)
CUW-AM
PCI Slot 2
PCI Slot 1
PCI Slot 3
CR2032 3V
Lithium Cell
CMOS Power
ATXPWR
4Mbit
Firmware
Hub
(FWH)
GAME_AUDIO
Mic
In
Line
Out
Line
In
USB
T: Port 1
B: Port 2
SYS_FAN
CD_IN
COM2
AUX_IN
Audio
Codec
USBV1
Socket 370
Power
Controller
Clock
Generator
Super
I/O

CUW-AM User’s Manual 5
2. HARDWARE SETUP
Layout Contents
2. H/W SETUP
2.2 Layout Contents
Expansion Slots
1) DIMM1, DIMM2 p. 7 168-Pin DIMM Memory Support
2) Socket 370 p. 9 Central Processing Unit (CPU) Socket
3) PCI1, PCI2, PCI3 p.10 32-bit PCI Bus Expansion Slots
Connectors
1) PS2KBMS p.11 PS/2 Mouse Connector (6-pin female)
2) PS2KBMS p.11 PS/2 Keyboard Connector (6-pin female)
3) USB p.12 Universal Serial Bus Ports 1 & 2 (Two 4-pin female)
4) PRINTER p.12 Parallel Port Connector (25-pin female)
5) COM1 p.12 Serial Port COM1 Connector (9-pin male)
6) VGA p.13 Monitor (VGA) Output Connector (15-pin female)
7) GAME_AUDIO p.13 Game/MIDI Connector (15-pin female) (optional)
8) GAME_AUDIO p.13 Audio Port Connectors (Three 1/8”female) (optional)
9) PRIMARY/SECONDARYIDE p.14 Primary/Secondary IDE Connectors (Two 40-1pins)
10) FLOPPY p.14 Floppy Disk Drive Connector (34-1pins)
11) WOL_CON p.15 Wake-On-LAN Connector (3 pins)
12) COM2 p.15 Serial Port COM2 Header (10-1 pins)
13) CPU_FAN, PS_FAN p.16 CPU and Power Supply Fan Connectors (3 pins)
14) LCDTV p.16 TV Out Connector (Two 20-1 pins)
15) CD_IN, AUX_IN p.17 Internal Audio Connector (4-pins) (optional)
16) USBV1 p.17 USB Header (6-1 pins)
17) MLED (PANEL) p.18 System Message LED (2 pins)
18) KLOCK (PANEL) p.18 Keyboard Lock Switch Lead (2 pins)
19) EXSMI (PANEL) p.18 System Management Interrupt Switch Lead (2 pins)
20) SPEAKER (PANEL) p.18 System Warning Speaker Connector (4 pins)
21) PWR (PANEL) p.18 ATX Power / Soft-Off Switch Lead (2 pins)
22) HDLED (PANEL) p.18 IDE Activity LED (2 pins)
23) PLED (PANEL) p.19 System Power LED Lead (3-1 pins)
24) RESET (PANEL) p.19 Reset Switch Lead (2 pins)
25) ATXPWR p.20 ATX Power Supply Connector (20 pins)

6CUW-AM User’s Manual
2. HARDWARE SETUP
Motherboard Settings
2. H/W SETUP
2.3 Hardware Setup Procedure
Before using your computer, you must complete the following steps:
•Check Motherboard Settings
•Install Memory Modules
•Install the Central Processing Unit (CPU)
•Install Expansion Cards
•Connect Ribbon Cables, Panel Wires, and Power Supply
2.4 Motherboard Settings
WARNING! Computer motherboards and expansion cards contain very delicate
Integrated Circuit (IC) chips. To protect them against damage from static electric-
ity, you should follow some precautions whenever you work on your computer.
1. Unplug your computer when working on the inside.
2. Use a grounded wrist strap before handling computer components. If you do
nothave one, touch bothof your hands toa safely grounded objector to a metal
object, such as the power supply case.
3. Hold components by the edges and try not to touch the IC chips, leads or con-
nectors, or other components.
4. Placecomponents ona groundedantistatic pad or on the bag thatcame withthe
component whenever the components are separated from the system.
5. Ensure that the ATX power supply is switched off before you plug in or
remove the ATX power connector on the motherboard.
WARNING! Make sure that you unplug your power supply when adding or
removing system components. Failure to do so may cause severe damage to
your motherboard, peripherals, and/or components. The onboard LED when
lit acts as a reminder that the system is in suspend or soft-off mode and not
powered OFF.

CUW-AM User’s Manual 7
2. HARDWARE SETUP
System Memory
2. H/W SETUP
Install memory in any combination as follows:
Location 168-pin DIMM SDRAM Total Memory
DIMM1 Single-Sided/Double-Sided x1
(Rows 0&1) 16, 32, 64, 128MB, or 256MB
DIMM2 Single-Sided/Double-Sided x1
(Rows 2&3) 16, 32, 64, 128MB, or 256MB
Total System Memory (Max 512MB) =
2.5.1 General DIMM Notes
•ASUS motherboards support SPD (Serial Presence Detect) DIMMs. This is the
memory of choice for best performance vs. stability.
•SDRAM chips are generally thinner with higher pin density than EDO (Extended
Data Output) chips.
•Single-sided DIMMs come in 16, 32, 64,128MB; double-sided come in 32, 64,
128, 256MB.
2.5 System Memory (DIMM)
NOTE: No hardware or BIOS setup is required after adding or removing memory.
This motherboard uses only Dual Inline Memory Modules (DIMMs). Sockets are
available for 3.3Volt (power level) unbuffered Synchronous Dynamic Random Ac-
cess Memory (SDRAM) of 16, 32, 64, 128MB, or 256MB.
This chipset does not support ECC. However, ECC memory modules may still be
used, but the ECC function will not be available.

8CUW-AM User’s Manual
2. HARDWARE SETUP
2.5.2 DIMM Installation
Insert the module(s) as shown. Because the number of pins are different on either
side of the breaks, the module will only fit in the orientation shown. DIMM mod-
ules are longer and have different pin contact on each side and therefore have a
higher pin density. SIMMs have the same pin contact on both sides.
0 1
CUW-AM
CUW-AM 168-Pin DIMM Sockets
Lock
FRONT
20 Pins
60 Pins
88 Pins
TheDIMMs mustbe 3.3VUnbufferedforthis motherboard.To determinethe DIMM
type, check the notches on the DIMMs (see figure below).
168-Pin DIMM Notch Key Definitions (3.3V)
DRAM Key Position Voltage Key Position
Unbuffered
RFU
Buffered Reserved
3.3V
5.0V
The notches on the DIMM will shift between left, center, or right to identify the type
and also to prevent the wrong type from being inserted into the DIMM slot on the
motherboard.You must ask your retailer the correct DIMM type before purchasing.
This motherboard supports four clock signals per DIMM slot.
System Memory
2. H/W SETUP

CUW-AM User’s Manual 9
2. HARDWARE SETUP
CPU
2. H/W SETUP
2.6 Central Processing Unit (CPU)
The motherboard provides a ZIF Socket 370. The CPU that came with the mother-
board should have a fan attached to it to prevent overheating. If this is not the case,
then purchase a fan before you turn on your system.
WARNING!Be sure that there is sufficient air circulation across the processor’s
heatsink by regularly checking that your CPU fan is working.Without sufficient
circulation, the processor could overheat and damage both the processor and the
motherboard. You may install an auxiliary fan, if necessary.
To install a CPU, first turn off your system and remove its cover. Locate the ZIF
socket and open it by first pulling the lever sideways away from the socket then
upwards to a 90-degree angle. Insert the CPU with the correct orientation as shown.
The notched corner should point towards the end of the lever. Because the CPU has
a corner pin for two of the four corners, the CPU will only fit in the orientation as
shown. The picture is for reference only; you should have a CPU fan that covers the
face of the CPU. With the added weight of the CPU fan, no force is required to
insert the CPU. Once completely inserted, close the socket’s lever while holding
down the CPU.
CAUTION! Be careful not to scrape the motherboard when mounting a clamp-
style processor fan or else damage may occur to the motherboard.
0 1
CUW-AM
CUW-AM Socket 370
Socket 370 CPU
(Top) Socket 370 CPU (Bottom)
Notch Celeron
Gold Arrow Coppermine

10 CUW-AM User’s Manual
2. HARDWARE SETUP
Expansion Cards
2. H/W SETUP
2.7 Expansion Cards
WARNING! Make sure that you unplug your power supply when adding or
removing expansion cards or other system components. Failure to do so may
cause severe damage to both your motherboard and expansion cards.
2.7.1 Expansion Card Installation Procedure
1. Read the documentation for your expansion card and make any necessary hard-
ware or software settings for your expansion card, such as jumpers or switches.
2. Remove your computer system’s cover and the bracket plate with screw on the
slot you intend to use. Keep the bracket for possible future use.
3. Carefully align the card’s connectors and press firmly.
4. Secure the card on the slot with the screw you removed above.
5. Replace the computer system’s cover.
6. Set up the BIOS if necessary.
7. Install the necessary software drivers for your expansion card.

CUW-AM User’s Manual 11
2.8 External Connectors
WARNING! Some pins are used for connectors or power sources. These are
clearly distinguished from jumpers in the Motherboard Layout. Placing jumper
caps over these connector pins will cause damage to your motherboard.
IMPORTANT: Ribbon cables should always be connected with the red stripe to
Pin 1 on the connectors. Pin 1 is usually on the side closest to the power connec-
tor on hard drives and CD-ROM drives, but may be on the opposite side on
floppy disk drives. Check the connectors before installation because there may
be exceptions. IDE ribbon cable must be less than 46 cm (18 in.), with the sec-
ond drive connector no more than 15 cm (6 in.) from the first connector.
1) PS/2 Mouse Connector (6-pin PS2KBMS)
The system will direct IRQ12 to the PS/2 mouse if one is detected.
PS/2 Mouse (6-pin Female)
2) PS/2 Keyboard Connector (6-pin PS2KBMS)
This connection is for a standard keyboard using an PS/2 plug (mini DIN). This
connector will not allow standardAT size (large DIN) keyboard plugs. You
may use a DIN to mini DIN adapter on standard AT keyboards.
PS/2 Keyboard (6-pin Female)
2. HARDWARE SETUP
Connectors
2. H/W SETUP

12 CUW-AM User’s Manual
3) Universal Serial Bus Ports (Two 4-pin USB)
Two USB ports are available for connecting USB devices.
Universal Serial Bus (USB) 2
USB 1
4) Parallel Port Connector (25-pin PRINTER)
The parallel connector is used for a single parallel device such as a printer or a
portable drive.
NOTE: Serial printers must be connected to the serial port.
Parallel (Printer) Port (25-pin Female)
5) Serial Port Connector (9-pin COM1)
One serial port is ready for a mouse or other serial devices.A second serial port
is available using a serial port bracket connected from the motherboard to an
expansion slot opening.
Serial Port (9-pin Male) COM 1
2. HARDWARE SETUP
Connectors
2. H/W SETUP

CUW-AM User’s Manual 13
6) Monitor Output Connector (15-pin VGA)
This connector is for output to a VGA-compatible device.
VGA Monitor (15-pin Female)
7) Game/MIDI Connector (15-pin GAME_AUDIO) (optional)
You may connect game joysticks or game pads to this connector for playing
games. Connect MIDI devices for playing or editing professional audio.
Joystick/Midi (15-pin Female)
NOTE: The onboard game port is to be used only if you are not using any PCI
or ISA audio card with a game port.
8) Audio Port Connectors (Three 1/8”GAME_AUDIO) (optional)
Line Out (lime) can be connected to headphones or preferably powered speak-
ers. Line In (light blue) allows tape players or other audio sources to be re-
corded by your computer or played through the Line Out (lime). Mic (pink)
allows microphones to be connected for inputting voice.
MicLine InLine Out
1/8" Stereo Audio Connectors
2. HARDWARE SETUP
Connectors
2. H/W SETUP

14 CUW-AM User’s Manual
9) Primary / Secondary IDE Connectors
(40-1pin PRIMARY/SECONDARY IDE)
These connectors support the provided IDE hard disk ribbon cable.
After connecting the single end to the board, connect the two plugs at the other
end to your hard disk(s). If you install two hard disks, you must configure the
second drive to Slave mode by setting its jumper accordingly. Please refer to
your hard disk documentation for the jumper settings. (Pin 20 is removed to
prevent inserting in the wrong orientation when using ribbon cables with
pin 20 plugged).
TIP: You may configure two hard disks to be both Masters with two ribbon
cables –one for the primary IDE connector and another for the secondary IDE
connector and select the boot disk through the BIOS.
IMPORTANT:UltraDMA/66 IDE devices must use an 80-wire IDE cable or
else devices will automatically be limited to UltraDMA/33 mode.
0 1
CUW-AM
CUW-AM IDE Connectors NOTE: Orient the red markings
on the IDE ribbon cable to PIN 1
Primary IDE Connector
Secondary IDE Connector
PIN 1
PIN 1
10) Floppy Disk Drive Connector (34-1pin FLOPPY)
This connector supports the provided floppy drive ribbon cable. After connect-
ing the single end to the board, connect the two plugs on the other end to the
floppy drives. (Pin 5 is removed to prevent inserting in the wrong orienta-
tion when using ribbon cables with pin 5 plugged).
0 1
CUW-AM
NOTE: Orient the red markings on
the floppy ribbon cable to
PIN 1
CUW-AM Floppy Disk Drive Connector
PIN 1
2. HARDWARE SETUP
Connectors
2. H/W SETUP

CUW-AM User’s Manual 15
11) Wake-On-LAN Connector (3-pin WOL_CON)
This connector connects to a LAN card with a Wake-On-LAN output. The con-
nector powers up the system when a wakeup packet or signal is received through
the LAN card.
IMPORTANT: This feature requires that your system has anATX power supply
with at least 720mA +5V standby power.
CUW-AM Wake-On-LAN Connector
IMPORTANT: Requires an ATX power
supply with at least 720mA +5 volt
standby power
+5 Volt Standby
PME Ground
0 1
CUW-AM
12) Serial Port Header (10-1 pin COM2)
The optional serial port bracket can be used to add an additional serial port for
additional serial devices.
0 1
CUW-AM
to COM2 Header
CUW-AM Serial COM2 Bracket
PIN 1
2. HARDWARE SETUP
Connectors
2. H/W SETUP

16 CUW-AM User’s Manual
13) CPU and Power Supply Fan Connectors (3-pin CPU_FAN, PS_FAN)
Orientate the fan so that the heat sink fins allow airflow to go across the onboard
heat sink(s) instead of the expansion slots. Depending on the fan manufacturer,
the wiring and plug may be different. The red wire should be positive, while the
black should be ground. Connect the fan’s plug to the board taking into consid-
eration the polarity of the connector.
NOTE: The “Rotation”signal cannot be monitored on this motherboard.
WARNING! The CPU and/or motherboard will overheat if there is no airflow
across the CPU and onboard heatsinks. Damage may occur to the motherboard
and/or the CPU fan if these pins are incorrectly used. These are not jumpers,
do not place jumper caps over these pins.
0 1
CUW-AM
CUW-AM 12-Volt Cooling Fan Power
PS_FAN
SYS_FAN
CPU_FAN
GND
Rotation
+12V
GND
Rotation
+12V
2. HARDWARE SETUP
Connectors
2. H/W SETUP
14) LCD-TV Headers (Two 20-1 pin LCDTV)
These headers require an optional LCD module for LCD output or a TV-out
module for TV output.
0 1
CUW-AM
CUW-AM LCD-TV Headers
1
LCDTV

CUW-AM User’s Manual 17
2. HARDWARE SETUP
Connectors
2. H/W SETUP
15) InternalAudio Connector (4-pin AUX_IN, CD_IN) (optional)
Theseconnectors allow you to receivestereo audio input from suchsound sources
as a CD-ROM, TV tuner, or MPEG card.
0 1
CUW-AM
CUW-AM Internal Audio Connector
CD_IN (Black)
Right Audio Channel
Left Audio Channel
Ground
AUX_IN (White)
Right Audio Channel
Left Audio Channel
Ground
16) USB Header (6-1 pin USBV1)
If the USB port connectors on the back panel are inadequate, a USB header is
available for additional USB port connectors. Connect the USB header to an
optional USB connector set and mount it to an open slot on your chassis.
0 1
CUW-AM
CUW-AM USB Header
USBV1
USB Power
USBP-
USBP+
GND
GND

18 CUW-AM User’s Manual
17) Message LED Lead (2-pin MLED)
This indicates whether a message has been received from a fax/modem. The
LED will remain lit when there is no signal and flash when there is data re-
ceived. This function requires an ACPI OS as well as application and driver
support.
18) Keyboard Lock Switch Lead (2-pin KLOCK)
This 2-pin connector connects to the case-mounted key switch to allow key-
board locking.
19) System Management Interrupt Lead (2-pin EXSMI)
Thisallows the userto manually placethe system into a suspend mode or “Green”
mode, where system activity is decreased to save electricity and expand the life
of certain components when the system is not in use. This 2-pin connector con-
nects to the case-mounted suspend switch.
20) System Warning Speaker Connector (4-pin SPEAKER)
This 4-pin connector connects to the case-mounted speaker.
21) Reset Switch Lead (2-pin RESET)
This 2-pin connector connects to the case-mounted reset switch for rebooting
your computer without having to turn off your power switch. This is a preferred
method of rebooting to prolong the life of the system’s power supply.
22) System Power LED Lead (3-1 pin PLED)
This 3-1 pin connector connects the system power LED, which lights when the
system is powered ON and flashes when it is in standby (suspend) mode.
The following PANEL illustration is used for items 17-24
0 1
CUW-AM
CUW-AM System Panel Connectors
* Requires an ATX power supply.
IDELED- Keylock
+5V
Speaker
Speaker
Connector
Power LED
Ground
Reset SW
HDLED
MessageLED
ExtSMI#
Reset Ground
Ground
Keyboard Lock
ATX Power
Switch*
PWRBTN
Ground
IDELED+
PWRLED+ PWRLED-
PWRLED-
MSGLED+
MSGLED-
Ground
ExternalSMILead
2. HARDWARE SETUP
Connectors
2. H/W SETUP

CUW-AM User’s Manual 19
Connectors
2. H/W SETUP
23) IDEActivity LED (2-pin HDLED)
This connector supplies power to the cabinet’s IDE activity LED. Read and
write activity by devices connected to the Primary or Secondary IDE connector
will cause the LED to light up.
24) ATX Power Switch Lead (2-pin PWR)
The system power is controlled by a momentary switch connected to this lead.
Pressing the button once will switch the system between ON and SOFT OFF.
Pushing the switch while in the ON mode for more than 4 seconds will turn the
system off. The system power LED shows the status of the system’s power.
2. HARDWARE SETUP
25) ATX Power Supply Connector (20-pin blockATXPWR)
This connector connects to an ATX power supply. The plug from the power sup-
ply will only insert in one orientation because of the different hole sizes. Find the
proper orientation and push down firmly making sure that the pins are aligned.
IMPORTANT:Make sure that yourATX power supply can supply at least 10mA
on the +5-volt standby lead (+5VSB). You may experience difficulty in power-
ing ON your system if your power supply cannot support the load. For Wake-
On-LAN support, yourATX power supply must supply at least 720mA+5VSB.
0 1
CUW-AM
CUW-AM ATX Power Connector
+3.3 Volts
-12.0 Volts
Ground
Power Supply On
Ground
Ground
Ground
-5.0 Volts
+5.0 Volts
+5.0 Volts
Power Good
+12.0 Volts
+3.3 Volts
+3.3 Volts
Ground
+5.0 Volts
Ground
+5.0 Volts
Ground
+5V Standby

20 CUW-AM User’s Manual
Connectors
2. H/W SETUP
2. HARDWARE SETUP
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