Page 1
FCC Information and Copyright
This equipment has been tested and found to comply with the
limits of a Class B digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio
communications. There is no guarantee that interference will not
occur in a particular installation.
The vendor makes no representations or warranties with respect
to the contents here of and specially disclaims any implied
warranties of merchantability or fitness for any purpose. Further
the vendor reserves the right to revise this publication and to
make changes to the contents here of without obligation to notify
any party beforehand.
Duplication of this publication, in part or in whole, is not allowed
without first obtaining the vendor’s approval in writing.
The content of this user’s manual is subject to be changed without
notice and we will not be responsible for any mistakes found in
this user’s manual. All the brand and product names are
trademarks of their respective companies.
Page 2
Table of Contents
Notice .............................................................................................1
Mainboard Features ...............................................................2
1. Features Introduction......................................................................... 2
1-1. Hardware............................................................................................................ 2
1-2. BIOS & Software............................................................................................ 5
1-3. Package Contents.......................................................................................... 5
2. Mainboard Configuration................................................................... 6
2-1. Layout of U8568 ............................................................................................ 6
2-2. Component Index ......................................................................................... 7
3. CPU Configuration ............................................................................... 8
3-1. CPU Socket 478 Configuration Steps:............................................... 8
3-2. CPU Fan Header: JCFAN1....................................................................... 10
3-3. System Fan Header: JSFAN1 (Optional) ....................................... 10
3-4. Frequency Selection: JCLK1.................................................................. 10
3-5. Clock Ratio Selection: JCLK2 ................................................................ 10
4. Jumpers, Headers & Connectors.................................................. 11
4-1. Front Panel Connector: JPANEL1 ....................................................... 12
4-2. ATX 20-pin Power Connector: JATXPWR1 .................................... 14
4-3. ATX 12V Power Connector: JATXPWR2 ......................................... 14
4-4. Hard Disk Connectors: IDE1/IDE2.................................................... 15
4-5. Floppy Disk Connector: FDD1.............................................................. 15
4-6. Wake On LAN Header: JWOL1............................................................ 15
4-7. Clear CMOS Jumper: JCMOS1 ............................................................. 16
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Table of Contents
4-8. CNR Codec Primary/Secondary Selection: JCODECSEL....... 16
4-9. Front USB Header: JUSB20B (with USB2.0 spe) (Optional)17
4-10. Front USB Header: JUSB3 (with USB1.0 spe)......................... 17
5. RAM Module Configuration............................................................. 18
5-1. DIMM Features.............................................................................................. 18
5-2. DIMM Module Configuration.................................................................. 19
6. Peripheral Port Features ................................................................. 21
6-1. PS/2 Mouse / Keyboard Connector: JKBMS1 ............................. 21
6-2. USB & LAN Port Connectors: JUSBLAN1 ....................................... 22
6-3. Serial and Parallel Interface Ports...................................................... 24
6-4. Game (Joystick/MIDI) Port Connector: JAUD_GAME ............ 26
6-5. Audio Port Connectors: JSPKR1/JLIN1/JMIC1............................ 26
6-6. Audio Subsystem......................................................................................... 27
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Mainboard Features
Notice
Introduction of system
This mainboard is designed to take advantage of the latest industry
technology to provide you with the ultimate solution in data
processing. In the tradition of its predecessors, this mainboard
continues a commitment to reliability and performance and strives
for full compliance and compatibility with industry software and
hardware standards.
U8568 Features:
1.Contains on board I/O facilities that include two serial ports, a parallel
port, a PS/2 mouse port, a PS/2 keyboard port, audio ports, USB
ports and a game port.
2.Contains on board IDE facilities for IDE devices such as hard disks
and CD-ROM Drives.
3.Supports the Intel Pentium ® 4 processor, a leading edge processor.
Complies with PC ATX form factor specifications.
4.Supports popular operating systems such as Windows NT, Windows
2000, Windows ME, Windows XP, Novell, LINUX and SCO UNIX.
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Mainboard Features
Mainboard Features
1. Features Introduction
1-1. Hardware
CPU:
1.Provides Socket-478.
2.Supports the Intel Pentium ® 4 processor providing the new generation power
for high-end workstations and servers.
Speed:
1.Running at 400/533 MHz Front Side Bus frequency, use chipset VT8753E
(P4X266E) (Optional).
2.Running at 400 MHz Front Side Bus frequency, use chipset VT8753
(P4X266).
3.Supports up to 2.53 GHz CPU core speeds.
4.The 33MHz 32 bit PCI 2.2 compliant.
5.The 66MHz AGP 2.0 compliant interface supports 1x, 2x and 4x data transfer
mode.
Chipset:
1.Chipset – North Bridge: VIA VT8753/ E (P4X266/ E)
South Bridge: VIA VT8233A.
2.Chipset – Winbond W83697HF.
DRAM Memory:
1.Supports 100MHz or 133MHz SDRAM devices
2.Supports 200MHz, 266MHz DDR SDRAM devices.
3.Supports 64Mb, 128Mb, 256Mb and 512Mb technologies for x8 and 16
devices.
4.Max of 2 Double-Sided DIMMs SDRAM or DDR SDRAM with unbuffered /
Registered.
5.The largest memory capacity is 2 GB.
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Mainboard Features
Shadow RAM:
Motherboard is equipped with a memory controller providing shadow RAM and
support for ROM BIOS.
Green Functionality:
1.Supports Award BIOS ™ power management functionality.
2.Has a power down timer from 1 to 15 minutes.
3.Wakes from power saving sleep mode with any keyboard or mouse activity.
BUS Slots:
1.Contains 1 AGP slot.
2.Contains 1 CNR slot.
3.Contains 1 ACR slot
4.Contains 5 32-bit PCI bus slots
Flash Memory:
1.Supports flash memory functionality.
2.Supports ESCD functionality.
Built in IDE Facilities:
1.Supports four IDE hard disk drives.
2.Supports PIO Mode 4, Master Mode, and high performance hard disk drives.
3.Supports disk transfer rates up to 133 MB/second.
4.Supports Ultra DMA 33, Ultra DMA 66, Ultra DMA 100, Ultra DMA 133 Bus
Master Modes.
5.Supports IDE interface with CD-ROM.
6.Supports high capacity hard disk drives.
7.Supports LBA mode.
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Mainboard Features
AC’97 Sound Codec Onboard:
1.AC-LINK protocol comfliance.
2.Compliant with AC’97 2.2 specification.
3.18-bit full duplex stereo ADC, DACs.
4.SNR>95 Bb throughmixer and DAC.
5.AC-3 playback required for PVD applications.
I/O facilities:
1.One multi-mode Parallel Port capable of supporting the following
specifications:
Standard & Bidirection Parallel Port.
Enhanced Parallel Port (EPP).
Extended Capabilities Port (ECP).
Normal
2.Supports two serial ports, 16550 UART.
3.Supports Infrared Data Transmission using IrDA.
4.Supports PS/2 mouse and PS/2 keyboard.
5.Supports 360KB, 720KB, 1.2MB, 1.44MB, and 2.88MB floppy disk drives.
Universal Serial Bus:
1.Supports two back panel Universal Serial Bus Ports and two front panel
Universal Serial Bus Ports.
2.Supports 480 MHz USB (2.0) (optional).
Hardware Monitor Function:
1.Monitors CPU Fan Speed.
2.Monitors System Voltage (optional).
Dimensions (ATX form-factor):
24.5cm x 30.5cm (WxL)
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Mainboard Features
1-2. BIOS & Software
1.Award legal BIOS.
2.Supports APM1.2.
3.Supports USB Function.
4.Supports ACPI.
Operating System:
Offers the highest performance for MS-DOS, Windows NT, Windows 2000,
Windows ME, Windows XP, Novell, LINUX, and SCO UNIX etc.
1-3. Package Contents
1.HDD Cable.
2.FDD Cable.
3.Flash Memory Writer for BIOS Update.
4.USB Cable (Optional).
5.Rear I/O Panel for ATX Case (Optional).
6.Fully Setup Driver CD.
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Mainboard Features
2. Mainboard Configuration
2-1. Layout of U8568
JKBMS1
Mouse &
KB
JUSBLAN1
USB & LAN
JCOM1
JPRNT1
Parallel Port
JCOM2
JVGA1
Speaker
Ou t
Line
In
Game Port
MIC
In
JAUD_GAME
JAUDIO1
129
JCDIN2
1
JCDIN1
BIOS
Winbond
W83697HF
JATXPWR2
U16
Realtek
RTL 8100
10
1
1
JTAD1
CNR1
CNR SLOT
4
123
AGP SLOT
PCI SLOT
PCI SLOT
PCI SLOT
PCI SLOT
PCI SLOT
AGP SLOT
JCODECSEL
1
Socket 478
1
CPU1
CPU
VT8753/ E
(P4X266/ E)
PCI1
PCI2
VT8233A
PCI3
PCI4
VT6202
PCI5
USB2.0
ACR1
JWOL1
U13
BAT1
U19
JCLK2
JCMOS1
1
SDR1
DDR1
DDR2
PRIMARY IDE CONN.
1
SECONDARY IDE CONN.
FLOPPY DISK CONN.
JUSB20B
2910
1
JPANEL1
2
1
24
23
SDR2
JATXPWR1
JUSB3
2
1
JSFAN1
10
9
1
6
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Mainboard Features
2-2. Component Index
7
Page 11
Mainboard Features
3. CPU Configuration
3-1. CPU Socket 478 Configuration Steps:
CPU Fan
CPU
1. Pull the lever sideways away from the socket then raise the
lever up to a 90-degree angle.
2. Locate Pin A in the socket and look for the white dot or cut
edge in the CPU. Match Pin A with the white dot/cut edge
then insert the CPU.
3. Press the lever down. Then Put the fan on the CPU and buckle
it and put the fan’s power port into the JCFAN1, then to
complete the installation.
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Mainboard Features
CPU Configuration Layout
4
123
JCLK2
1
JSFAN1
1
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Mainboard Features
3-2. CPU Fan Header: JCFAN1
Pin No. Assignment
1 Ground
2 +12V
3 Sense
3-3. System Fan Header: JSFAN1
(Optional)
Pin No. Assignment
1
2 +12V
3
3-4. Frequency Selection: JCLK1 (Optional)
Ground
Sense
CPU Clock PIN 1-2 PIN 3-4
100MHz
133MHz
OFF ON
ON OFF
3-5. Clock Ratio Selection: JCLK2
(Optional)
JCLK2 Assignment
1 3
1-2 Closed
1 3
2-3 Closed
100 MHz
133 MHz
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Mainboard Features
4. Jumpers, Headers & Connectors
JATXPWR1
JATXPWR2
2
10
JUSB3
1
9
1
JCODECS EL
JWOL1
IDE 1-2
FDD1
JUSB20B
BAT1
1
JCMOS1
1
2910
1
2
1
JPANEL1
24
23
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Mainboard Features
4-1. Front Panel Connector: JPANEL1
Pin Assignment Function Pin Assignment Function
No.
No.
1 +5V 2 Sleep Control Sleep
3 NA Speaker 4 Ground Button
5 NA Connector 6 NA
7 Speaker 8 Power LED (+)
9 HDD LED (+) Hard Drive 10 Power LED (+)
11 HDD LED (-) LED 12 Power LED (-) LED
13 Ground Reset 14 Power Button Power-on
15 Reset Control Button 16 Ground Button
17 NA 18 KEY
19 NA IrDA 20 KEY IrDA
21 VCC5 Connector 22 Ground Connector
23 IRTX 24 IRRX
SPK (Speaker Connector)
An offboard speaker can be installed on the motherboard as a
manufacturing option. An offboard speaker can be connected to
the motherboard at the front panel connector. The speaker
(onboard or offboard) provides error beep code information during
the Power On Self-Test when the computer cannot use the video
interface. The speaker is not connected to the audio subsystem
and does not receive output from the audio subsystem.
RST (Reset Button)
This connector can be attached to a momentary SPST switch. This
switch is usually open and when closed will cause the
motherboard to reset and run the POST (Power On Self Test).
NA
POWER
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Mainboard Features
POW-LED (Power LED Connector)
This connector can be attached to an LED on the front panel of a
computer case. The LED will illuminate while the computer is
powered on.
HLED (Hard Drive LED Connector)
This connector can be attached to an LED on the front panel of a
computer case. The LED will flicker during disk activity. This disk
activity only applies to those IDE drives directly attached to the
system board.
IR (Infrared Connector)
This connector is used to attach to an infrared sensing device.
After the IrDA interface is configured, connectionless data transfer
to and from portable devices such as laptops, PDAs is possible.
SLP (Sleep/Green Button)
This connector is used to conserve energy by powering down the
monitor and the hard disk when not in use. To configure this
option, you need to connect a button from the front panel to this
connector. Depressing the button will power down the monitor
and hard drives until the system is invoked by any keyboard
activity, mouse activity, modem activity or when the sleep
button is depressed again. APM (Advanced Power Management)
must be enabled in the system BIOS and the APM driver must be
loaded.
ON/OFF (Power Button)
This connector can be attached to a front panel power switch. The
switch must pull the Power Button pin to ground for at least 50 ms
to signal the power supply to switch on or off. (The time required
is due to internal debounce circuitry on the system board). At
least two seconds must pass before the power supply will
recognize another on/off signal.
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Mainboard Features
4-2. ATX 20-pin Power Connector:
JATXPWR1
PIN Assignment PIN Assignment
1 3.3V 11 3.3V
2 3.3V 12 -12V
3 Ground 13 Ground
4 5V 14 PS_ON
5 Ground 15 Ground
6 5V 16 Ground
7 Ground 17 Ground
8 PW_OK 18 -5V
9 5V_SB 19 5V
10 12V 20 5V
4-3. ATX 12V Power Connector: JATXPWR2
PIN Assignment PIN Assignment
1 12V 3 Ground
2 12V 4 Ground
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Mainboard Features
4-4. Hard Disk Connectors: IDE1/IDE2
This mainboard has a 32-bit Enhanced PCI IDE Controller that
provides PIO Mode 0~4, Bus Master, and Ultra DMA / 33, Ultra
DMA / 66,Ultra DMA / 100 functionality. It has two HDD
connectors IDE1 (primary) and IDE2 (secondary).
• IDE1 (Primary IDE Connector)
The first hard drive should always be connected to IDE1. IDE1
can connect a Master and a Slave drive. You must configure the
second hard drive on IDE1 to Slave mode by setting the jumper
accordingly.
• IDE2 (Secondary IDE Connector)
The IDE2 controller can also support a Master and a Slave drive.
The configuration is similar to IDE1. The second drive on this
controller must be set to slave mode.
4-5. Floppy Disk Connector: FDD1
The motherboard provides a standard floppy disk connector (FDC)
that supports 360K, 720K, 1.2M, 1.44M and 2.88M floppy disk
types. This connector supports the provided floppy drive ribbon
cables.
4-6. Wake On LAN Header: JWOL1
Pin No. Assignment
1
2 Ground
3
5V SB
Wake up
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Mainboard Features
4-7. Clear CMOS Jumper: JCMOS1
JCMOS1 Assignment
1 3
1-2 Closed
1 3
2-3 Closed
Normal Operation (default)
Clear CMOS Data
The following procedures are for resetting
the BIOS password. It is important to
follow these instructions closely.
※ Clear CMOS Procedures:
1. Remove AC power line.
2. Make JCMOS1 (2-3) closed.
3. Wait for five seconds.
4. Make JCMOS1 (1-2) closed.
5. Let AC power on.
6. Reset your desired password or clear the CMOS data.
4-8. CNR Codec Primary/Secondary
Selection: JCODECSEL
Pin No. Assignment
1-2
2-3 CNR Primary Codec
On-board Primary Codec
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Mainboard Features
4-9. Front USB Header: JUSB20B (with
USB2.0 spe) (Optional)
(JUSB20B)
Pin Assignment Pin Assignment
1 +5V(fused) 2 +5V(fused)
3 USBP3- 4 USBP4-
5 USBP3+ 6 USBP4+
7 Ground 8 Ground
9 KEY 10 NC
4-10. Front USB Header: JUSB3 (with USB1.0
spe)
(JUSB3)
Pin Assignment Pin Assignment
1 +5V(fused) 2 +5V(fused)
3 USBP2- 4 USBP3-
5 USBP2+ 6 USBP3+
7 Ground 8 Ground
9 KEY 10 NC
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Mainboard Features
5. RAM Module Configuration
5-1. DIMM Features
DRAM Access Time: 2.5V DDR SDRAM PC1600/ PC2100 Type
or 3.3V SDR SDRAM PC100/PC133 Type
DDR
Devices used on
64M (4Mx4x4banks) 256 M 256 M
64M (2Mx8x4banks) 128 M 128 M
64M (1Mx16x4banks) 64 M 64 M
128M (8Mx4x4banks) 512 M 512 M
128M (4Mx8x4banks) 256 M 256 M
128M (2Mx16x4banks) 128 M 128 M
256M (8Mx8x4banks) 512 M 512 M
256M (4Mx16x4banks) 256 M 256 M
512M (8Mx16x4banks) 512 M 512 M
SDR
Devices used on
64M (4Mx4x4banks) 256 M 256 M
64M (2Mx8x4banks) 128 M 128 M
64M (1Mx16x4banks) 64 M 64 M
128M (8Mx4x4banks) 512 M 512 M
128M (4Mx8x4banks) 256 M 256 M
128M (2Mx16x4banks) 128 M 128 M
256M (8Mx8x4banks) 512 M 512 M
256M (4Mx16x4banks) 256 M 256 M
512M (8Mx16x4banks) 512 M 512 M
DIMM
DIMM
required.
required.
DIMM 1
(2 Rows)
x64/ x72
DIMM 1
(2 Rows)
x64/ x72
DIMM 2
(2 Rows)
x64/ x72
DIMM 2
(2 Rows)
x64/ x72
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Mainboard Features
5-2. DIMM Module Configuration
1. The DIMM socket has a “Plastic Safety Tab” and the DIMM
memory module has an asymmetrical notch”, so the DIMM
memory module can only fit into the slot in one direction.
2. Push the tabs out. Insert the DIMM memory modules into the
socket at a 90-degree angle then push down vertically so that it
will fit into place.
3. The Mounting Holes and plastic tabs should fit over the edge
and hold the DIMM memory modules in place.
SDR
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Mainboard Features
DDR
20
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Mainboard Features
6. Peripheral Port Features
JKBMS1
Mouse
LAN (Optional)
JUSBLAN1
PS/2
PS/2
Keybo ard
USB
6-1. PS/2 Mouse / Keyboard Connector:
JKBMS1
The motherboard provides a standard PS/2 mouse / Keyboard
mini DIN connector for attaching a PS/2 mouse. You can plug a
PS/2 mouse / Keyboard directly into this connector. The connector
location and pin definition are shown below:
PS/2 Mouse / Keyboard Connectors
Pin Assignment
1 Data
2 No connect
3 Ground
4 +5 V (fused)
5 Clock
6 No connect
COM1
JPRNT1
Parall el
JCOM2JCOM1
COM2
JAUD_GAME
Game Port
Speaker
Out
JSPKR1 JLIN1 JMIC1
Line In
Mic
In
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Page 25
Mainboard Features
6-2. USB & LAN Port Connectors: JUSBLAN1
6-2-1. USB Connectors:
USB Connector (the below one)
Pin Assignment
1 +5 V (fused)
2 USBP1-
3 USBP1+
4 Ground
USB Connector (the above one)
Pin Assignment
5 +5 V (fused)
6 USBP2-
7 USBP2+
8 Ground
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Mainboard Features
6-2-2. LAN Port Connector: (Optional)
This connector allows you to connect to the Internet through a
Local Area Network (LAN). You can set up the connection by
entering account information provided by your ISP.
LAN Port Connector
Pin Assignment
9 VCC3
10 TD+
11 TD-
12 RD+
13 RD-
14 NC
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Mainboard Features
6-3. Serial and Parallel Interface Ports
This system comes equipped with two serial ports and one parallel
port. Both types of interface ports will be explained in this
chapter.
6-3-1. The Serial Interface: JCOM1/ JCOM2
The serial interface port is sometimes referred to as an RS-232
port or an asynchronous communication port. Mice, printers,
modems and other peripheral devices can be connected to a serial
port. The serial port can also be used to connect your computer
with another computer system.
Connectivity
The serial ports can be used in many ways, and it may be
necessary to become familiar with the pinout diagram. The
following chart gives you the function of each pin on the 9-pin
connector and some of the 25-pin connector. This information can
be used when configuring certain software programs to work with
the serial ports.
Signal Name DB9 PIN DB25 PIN
DCD Data Carrier Detect 1 8
RX Receive Data 2 3
TX Transmit Data 3 2
DTR Data Terminal Ready 4 20
GND Signal Ground 5 7
DSR Data Set Ready 6 6
RTS Request to Send 7 4
CTS Clear to Send 8 5
RI Ring Indicator 9 22
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Mainboard Features
6-3-2. Parallel Interface Port: JPRNT1
Unlike the serial ports, parallel interface port has been
standardized and should not present any difficulty interfacing
peripherals to your system. Sometimes called centronics port, the
parallel port is almost exclusively used with printers. The parallel
port on your system has a 25-pin, DB25 connector. The pinout for
the parallel port are shown in the table below.
Pin Signal
1 -Strobe
2 Data 0
3 Data 1
4 Data 2
5 Data 3
6 Data 4
7 Data 5
8 Data 6
9 Data 7
10 -Ack
11 Busy
12 Paper Empty
13 +Select
14 -Auto FDXT
15 -Error
16 -Init
17 -SLCTN
18 Ground
19 Ground
20 Ground
21 Ground
22 Ground
23 Ground
24 Ground
25 Ground
25
Page 29
Mainboard Features
6-4. Game (Joystick/MIDI) Port Connector:
JAUD_GAME
This connector allows you to connect a joystick or game pad for
playing computer games. Also, you may play or edit professional
music by connecting MIDI devices.
Game/Joystick/MIDI
6-5. Audio Port Connectors:
JSPKR1/JLIN1/JMIC1
Speaker Out
1. Speaker Out is used to connect speakers or headphones for
audio output.
2. Line In can be connected to the external CD player, Tape
player or other audio devices for audio input.
3. Mic In is used to connect a microphone, which allows you to
input sounds and voices.
Line In
26
Mic In
Page 30
Mainboard Features
6-6. Audio Subsystem
JAUDIO1
2
10
1
9
JTAD1
1
JCDIN2
JCDIN1
1
1
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Page 31
Mainboard Features
6-6-1. CD-ROM Audio-In Header: JCDIN1
Pin No. Assignment
1 Left Channel Input
2 Ground
3 Ground
4 Right Channel Input
6-6-2. CD-ROM Audio-In Header: JCDIN2
Pin No. Assignment
1 Left Channel Input
2 Ground
3 Right Channel Input
4 Ground
6-6-3. Front Panel Audio Header: JAUDIO1
Pin No. Assignment Pin No. Assignment
1 Mic In 2 Ground
3 Mic Power 4 Audio Power
5 RT Line Out 6 RT Line Out
7 Reserved 8
9 LFT Line Out 10 LFT Line Out
6-6-4. Telephony Audio Header: JTAD1
Pin No. Assignment
1 PHONE
2 Ground
3 Ground
4 MONO_OUT
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10/01/2002
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