VIA Technologies EPIA User manual

User’s Manual
EPIA
Version 1.21
December 1, 2006

Copyright
Copyright © 2003-2006 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.
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...................................................................................9
Installation..............................................................................9
CPU...................................................................................... 10
Memory Module Installation.................................................... 13
Connecting the Power Supply ................................................. 16
Back Panel Ports.................................................................... 18
Connectors............................................................................ 20
Jumpers................................................................................ 28
Slots..................................................................................... 31
Chapter 3................................................................................. 33
BIOS Setup........................................................................... 33
Entering Setup ...................................................................... 34
Control Keys.......................................................................... 35
Navigating the BIOS Menus.................................................... 36
Getting Help.......................................................................... 37
Main Menu............................................................................ 38
Standard CMOS Features........................................................ 40
IDE Drives ............................................................................ 42
Advanced BIOS Features........................................................ 43
Advanced Chipset Features..................................................... 48
DRAM Clock/Drive Control...................................................... 50

iii
AGP and P2P Bridge Control ................................................... 51
CPU and PCI Bus Control........................................................ 52
Integrated Peripherals............................................................ 54
VIA OnChip IDE Device.......................................................... 56
VIA OnChip PCI Device .......................................................... 58
Super IO Device.................................................................... 60
Power Management Setup...................................................... 62
Power Management............................................................... 65
Wake Up Events.................................................................... 67
IRQs Activities....................................................................... 69
PNP/PCI Configurations.......................................................... 70
IRQ Resources ...................................................................... 72
DMA Resources ..................................................................... 73
PC Health Status.................................................................... 74
Load Defaults........................................................................ 75
Set Supervisor / User Password .............................................. 76
Save & Exit Setup.................................................................. 78
Exit Without Saving ............................................................... 79
Chapter 4................................................................................. 81
Driver Installation.................................................................. 81
Driver Utilities ....................................................................... 82
CD Content........................................................................... 84

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1
CHAPTER 1
Specifications
The ultra-compact and highly integrated VIA EPIA 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 occupies 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 quiet operation.

Chapter 1
2
MAINBOARD SPECIFICATIONS
CPU
•VIA C3 / Eden EBGA Processor
Chipset
•VIA VT8601A North Bridge
•VIA VT8231 South Bridge
Graphics
•Integrated Trident Blade 3D graphics core
Audio
•VIA VT1612A AC'97 Codec
Memory
•2 x PC100/133 DIMM slots
Expansion Slot
•1 x PCI slot
IDE
•2 x UltraDMA 33/66/100 connectors
LAN
•VIA VT6103 10/100 Base-T Ethernet PHY

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 Parallel port
•2 x USB 1.1 ports
•1 x VGA port
•3 x Audio Jacks: Line-out, Line-in and Mic-in
Onboard I/O Connectors
•1 x USB pin headers for 2 additional USB 1.1 ports
•1 x Video-in pin header
•1 x CD audio-in connector
•1 x CIR pin header
•1 x FIR pin header
•2 x Fan connectors
BIOS
•Award BIOS with 2Mbit flash memory capacity
Form Factor
•Mini-ITX (4 layers)
•17 cm X 17 cm

Chapter 1
4
MAINBOARD LAYOUT
EBGA
Processor
VT8601A
North
Bridge
VT8231
South
Bridge
DIMM 1
DIMM 2
J12
Video-in
Connector
FAN 1
FAN 2
ATX Power Connector
IDE 1
IDE 2
BIOS
ROM
PCI Slot
J7
CD-ROM
Line-in CR2032
Battery
J10
Clear
CMOS
J9
USB
J6
CIR
J5
FIR
J3
Front Panel
Connector
J2
Auto Reboot
Jumper
J8
Wake on
Modem

Specifications
5
BACK PANEL LAYOUT
PS2
Mouse
Port
PS2
Keyboard
Port
Parallel Port
VGA Port
LAN Port
USB Ports
Serial Port
Line-inLine-out Mic-in

Chapter 1
6
BACK PANEL PORTS
Port Description Page
Audio ports Line-out, Line-in and Mic-in 19
COM Serial port 18
LPT Parallel port 19
PS/2 Mouse PS/2 mouse port 18
PS/2 Keyboard PS/2 keyboard port 18
RJ45 RJ45 port 19
USB USB 1.1 ports 19
VGA VGA port 18
SLOTS
Port Description Page
DDR DIMM Memory module slot 13
PCI Expansion card slot 31

Specifications
7
ONBOARD CONNECTORS
Connector Description Page
ATXPWR Power cable connector 16
FAN1-2 CPU fan connector 12
IDE 1-2 IDE drive connectors 20
J3 Front panel connector 21
J5 FIR connector 22
J6 CIR connector 23
J7 Onboard CD audio cable connector 25
J8 Wake-on Modem 27
J9 Universal Serial Bus 1.1 connector 24
J12 VIP connector 26
ONBOARD JUMPERS
Jumper Description Page
J2 Auto Reboot Function 30
J10 Reset CMOS settings 29

Chapter 1
8
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9
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.

Chapter 2
10
CPU
The VIA C3 E-Series Processor
The VIA EPIA Mini-ITX mainboard includes an embedded VIA C3 or Eden
Processor. The VIA C3 Processor provides ultra-low power consumption and
advanced thermal dissipation properties. The VIA C3 Processor requires
heatsink and a CPU fan to provide sufficient cooling. Ensure that the CPU
fan is correctly installed as shown.

Installation
11
The VIA Eden Processor
Providing ultra-low power consumption and advanced thermal dissipation
properties, the VIA Eden Processor features a fanless design. The VIA Eden
Processor requires only a heatsink as shown.
WARNING: This mainboard is not designed to support overclocking.
Any attempt to operate beyond product specifications is not
recommended. We do not guarantee against damages or risks
caused by inadequate operation or beyond product specifications.

Chapter 2
12
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. The CPU
system and power fan connectors have sensors to support fan monitoring.
EBGA
Processor
VT8601A
North
Bridge
VT8231
South
Bridge
FAN1
FAN2