VIA Technologies EPIA-CN10000EG - VIA Motherboard - Mini ITX User manual

User’s Manual
EPIA-CN
Version 1.0
March 27, 2006

Copyright
Copyright © 2005-2006 VIA Technologies Incorporated. All rights reserved.
No part of this document may be reproduced, transmitted, transcribed, stored in a retrieval
system, or translated into any language, in any form or by any means, electronic, mechanical,
magnetic, optical, chemical, manual or otherwise without the prior written permission of VIA
Technologies, Incorporated.
Trademarks
All trademarks are the property of their respective holders. PS/2 is a registered trademark of
IBM Corporation. Award BIOS is a registered trademark of Phoenix Technologies Ltd.
Macrovision
Apparatus Claims of U.S. Patent Nos. 4,631,603; 4,819,098; 4,907,093; 5,315,448; 6,516,132
licensed for limited viewing uses only. This product incorporates copyright protection
technology that is protected by certain U.S. patents and other intellectual property rights owned
by Macrovision and other rights owners. Use of this copyright protection technology must be
authorized by Macrovision, and is intended for home and other limited viewing uses only
unless otherwise authorized by Macrovision. Reverse engineering or disassembly is
prohibited.
Disclaimer
No license is granted, implied or otherwise, under any patent or patent rights of VIA
Technologies. VIA Technologies makes no warranties, implied or otherwise, in regard to this
document and to the products described in this document. The information provided in this
document is believed to be accurate and reliable as of the publication date of this document.
However, VIA Technologies assumes no responsibility for the use or misuse of the information
in this document and for any patent infringements that may arise from the use of this
document. The information and product specifications within this document are subject to
change at any time, without notice and without obligation to notify any person of such change.

FCC-B Radio Frequency Interference Statement
This equipment has been tested and found to comply with the limits for a class B digital
device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful interference
to radio communications. Operation of this equipment in a residential area is likely to cause
harmful interference, in which case the user will be required to correct the interference at his
personal expense.
Notice 1
The changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate the equipment.
Notice 2
Shielded interface cables and A.C. power cord, if any, must be used in order to comply with
the emission limits.
Tested To Comply
With FCC Standards
FOR HOME OR OFFICE USE

Safety Instructions
1. Always read the safety instructions carefully.
2. Keep this User's Manual for future reference.
3. Keep this equipment away from humidity.
4. Lay this equipment on a reliable flat surface before setting it up.
5. The openings on the enclosure are for air convection hence protects the equipment from
overheating. DO NOT COVER THE OPENINGS.
6. Make sure the voltage of the power source and adjust properly 110/220V before
connecting the equipment to the power inlet.
7. Place the power cord in such a way that people cannot step on it. Do not place anything
over the power cord.
8. Always unplug the power cord before inserting any add-on card or module.
9. All cautions and warnings on the equipment should be noted.
10. Never pour any liquid into the opening. Liquid can cause damage or electrical shock.
11. If any of the following situations arises, get the equipment checked by a service personnel:
• The power cord or plug is damaged
• Liquid has penetrated into the equipment
• The equipment has been exposed to moisture
• The equipment has not work well or you cannot get it work according to User's
Manual.
• The equipment has dropped and damaged
• If the equipment has obvious sign of breakage
12. DO NOT LEAVE THIS EQUIPMENT IN AN ENVIRONMENT UNCONDITIONED,
STORAGE TEMPERATURE ABOVE 60 C (140F), IT MAY DAMAGE THE
EQUIPMENT.
CAUTION: Explosion or serious damage may occur if the battery is
incorrectly replaced. Replace only with the same or equivalent
battery type recommended by the manufacturer.

i
BOX CONTENTS
One VIA Mini-ITX mainboard
One Quick Installation Guide
One ATA-133/100 IDE ribbon cable
One driver and utilities CD
One IO bracket

ii
TABLE OF CONTENTS
Box Contents......................................................................... i
Table of Contents ..................................................................ii
Chapter 1 ............................................................................ 1
Specifications .................................................................... 1
Mainboard Specifications ..................................................... 2
Mainboard Layout............................................................... 4
Back Panel Layout .............................................................. 5
Back Panel Ports ................................................................ 6
Slots ................................................................................ 6
Onboard Connectors ........................................................... 7
Onboard Jumpers ............................................................... 7
Chapter 2 ............................................................................ 8
Installation........................................................................ 8
CPU ................................................................................. 9
Memory Module Installation ................................................11
Connecting the Power Supply ..............................................12
Back Panel Ports ...............................................................13
Connectors.......................................................................16
Jumpers...........................................................................21
Slots ...............................................................................22
Chapter 3 ...........................................................................23
BIOS Setup ......................................................................23
Entering Setup..................................................................24
Control Keys.....................................................................25
Navigating the BIOS Menus ................................................26
Getting Help.....................................................................27
Main Menu .......................................................................28
Standard CMOS Features ....................................................30
IDE Drives .......................................................................31
Advanced BIOS Features ....................................................32
Hard Disk Boot Priority.......................................................35
Advanced Chipset Features .................................................36
AGP & P2P Bridge Control...................................................38
CPU & PCI Bus Control .......................................................40

iii
TV Output Connector .........................................................41
Integrated Peripherals .......................................................42
Power Management Setup ..................................................44
Peripheral Activities...........................................................47
IRQs Activities ..................................................................50
PNP/PCI Configurations......................................................51
IRQ Resources ..................................................................53
PC Health Status ...............................................................54
Frequency / Voltage Control ...............................................55
Load Fail-Safe Defaults ......................................................59
Load Optimized Defaults.....................................................60
Set Supervisor / User Password ...........................................61
Save & Exit Setup .............................................................63
Exit Without Saving ...........................................................64
Chapter 4 ...........................................................................65
Driver Installation .............................................................65
Driver Utilities ..................................................................66
CD Content ......................................................................68

iv
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1
CHAPTER 1
Specifications
The ultra-compact and highly integrated VIA EPIA-CN uses the
Mini-ITX mainboard form-factor developed by VIA Technologies,
Inc. as part of the company’s open industry-wide total
connectivity initiative. The mainboard enables the creation of an
exciting new generation of small, ergonomic, innovative and
affordable embedded systems. Through a high level of
integration, the Mini-ITX occupy 66% of the size of FlexATX
mainboard form factor. The mainboard comes with an embedded
VIA Processor, boasting of ultra-low power consumption, cool and
quite operation.

Chapter 1
2
MAINBOARD SPECIFICATIONS
CPU
• VIA C7 V4 Bus NanoBGA2 Processor
Chipset
• VIA CN700 North Bridge
• VIA VT8237R-series South Bridge
Graphics
• Integrated UniChrome™ Pro AGP with MPEG-2 Acceleration
Audio
• VIA VT1618 8-channel AC'97 Codec
Memory
• 1 x DDR2 533/400 DIMM slot (up to 1 GB)
Expansion Slot
• 1 x PCI slot
IDE
• 2 x UltraDMA 133/100 connectors
LAN
• VIA VT6103 100/10 Base-T Ethernet PHY
TV-Out
• VIA VT1625M HDTV Encoder

Specifications
3
Back Panel I/O Ports
• 1 x PS/2 mouse port and 1 x PS/2 keyboard port
• 1 x RJ-45 LAN port
• 1 x Serial port
• 1 x VGA port
• 4 x USB 2.0 ports
• 1 x RCA port (SPDIF or TV out)
• 1 x S-Video port
• 3 x Audio Jacks: line-out, line-in and mic-in (Horizontal, Smart
5.1 Support)
Onboard I/O Connectors
• 1 x USB pin header for 4 additional USB 2.0 ports
• 1 x Front Panel audio pin header (Mic-in and Line-out)
• 2 x Serial ATA connectors
• 1 x LPT connector
• 1 x CD-In pin header
• 1 x CIR pin header (Switchable for KB/MS)
• 2 x Fan connectors (CPU Fan and System Fan)
• 1 x Front-Panel pin header
BIOS
• Award BIOS with 4/8Mbit flash memory capacity
• ACPI2.0, SMBIOS2.1 and DMI2.2
Form Factor
• Mini-ITX (4 layers)
• 17 cm X 17 cm

Chapter 1
4
MAINBOARD LAYOUT
Top: Mouse
Bot: Keyboard
Top: RCA jack
Bot: S-Video
Top: RJ45 LAN
Bot: USB2.0 ports
Top: COM port
Bot: VGA-Out
USB2.0 ports
Line-Out
Line-In
Microphone
ATXPWR
CPUFAN
IDE2
KBMS
USB4-7
CD-In
LPT
DIMM
IDE1
SPDIF_
SEL
SYSFAN
SATA2
SATA1
F_PANEL
CLEAR_CMOS
CMOS
Battery
BIOS Socket
PCI
F_AUDIO
CN700
North Bridge
C7
CPU
VT8237R-series
South Bridge

Specifications
5
BACK PANEL LAYOUT
PS/2 Mouse
PS/2 Keyboard
RCA/SPDIF
Line-InLine-Out Mic-InS-VideoUSBUSB
RJ45
VGA Out
COM

Chapter 1
6
BACK PANEL PORTS
Port Description Page
Audio Jacks 3 Audio ports (line-out, line-in and mic-in) 13-15
COM Serial port 1 13
PS/2 Mouse PS/2 mouse port 13
PS/2 Keyboard PS/2 keyboard port 13
RCA/SPDIF RCA port (SPDIF or TV out) 13-14
RJ45 RJ45 port 13-14
USB USB 2.0 ports 13-14
VGA VGA port 13
S-Video S-Video port 13-14
SLOTS
Port Description Page
DDR DIMM Memory module slot 11
PCI Expansion card slot 22

Specifications
7
ONBOARD CONNECTORS
Connector Description Page
ATXPWR Power cable connector 12
CD-In CD-In connector 18
CPUFAN CPU fan connector 10
F_AUDIO Front Audio connector 19
F_PANEL Front panel connector 17
IDE 1-2 IDE drive connectors 16
KBMS Keyboard and Mouse connector 19
LPT LPT connector 20
SATA 1-2 Serial ATA 1 and 2 connectors 18
SYSFAN System fan connector 10
USB 4-7 Universal Serial Bus 2.0 connectors 3-4 18
ONBOARD JUMPERS
Jumper Description Page
CLEAR_CMOS Reset CMOS settings 21
SPDIF_SEL S/PDIF selector 21

8
CHAPTER 2
Installation
This chapter provides you with information about hardware
installation procedures. It is recommended to use a grounded wrist
strap before handling computer components. Electrostatic discharge
(ESD) can damage some components.

Installation
9
CPU
The VIA EPIA-CN Mini-ITX mainboard includes an embedded VIA C7 V4 Bus
Processor. The VIA C7 V4 Bus Processor requires only a heatsink to provide
sufficient cooling.
CN700
North Bridge
C7
CPU
VT8237R-series
South Bridge

Chapter 2
10
CPU Fan and System Fan: CPUFAN and SYSFAN
The CPUFAN (CPU fan) and SYSFAN (system fan) run on +12V and maintain
system cooling. When connecting the wire to the connectors, always be
aware that the red wire is the Positive and should be connected to the +12V.
The black wire is Ground and should always be connected to GND.
FAN_MCM is a switch that is used by high-quality fans to monitor the system
temperature and will automatically adjust according to the environment.
CPUFAN
Pin Signal
1 FAN_MCM
2 +12V
3 GND
SYSFAN
Pin Signal
1 FAN_MCM
2 +12V
3 GND
1
CPUFAN
1
SYSFAN

Installation
11
MEMORY MODULE INSTALLATION
The VIA EPIA-CN Mini-ITX mainboard provides one 240-pin DIMM slot for
DDR2 533/400 SDRAM memory modules and supports the memory size up to
1GB.
DDR SDRAM Module Installation Procedures
• Locate the DIMM slot in the motherboard.
• Unlock a DIMM slot by pressing the retaining clips outward.
• Align a DIMM on the socket such that the notch on the DIMM
matches the break on the slot.
• Firmly insert the DIMM into the slot until the retaining clips snap
back in place and the DIMM is properly seated.
Available DDR SDRAM Configurations
Refer to the table below for available DDR SDRAM configurations on the
mainboard.
Slot Module Size Total
DIMM 64MB, 128MB, 256MB, 512MB, 1GB 64MB-1GB
Maximum supported system memory 64MB-1GB
DIMM

Chapter 2
12
CONNECTING THE POWER SUPPLY
The VIA EPIA-CN Mini-ITX mainboard supports a conventional ATX power
supply for the power system. Before inserting the power supply connector,
always make sure that all components are installed correctly to ensure that
no damage will be caused.
ATX 20-Pin Power Connector
To connect the ATX power supply, make sure the power plug is inserted in
the proper orientation and the pins are aligned. Then push down the plug
firmly into the connector.
Pin Signal
1 +3.3V
2 +3.3V
3 GND
4 +5V
5 GND
6 +5V
7 GND
8 Power Good
9 +5V Standby
10 +12V
11 +3.3V
12 -12V
13 GND
14 Power Supply On
15 GND
16 GND
17 GND
18 NC
19 +5V
20 +5V
ATXPWR
1
10
11
20