VIA Technologies VT310-DP User manual

User’s Manual
VT310-DP
Version 1.01
October 7, 2005

Copyright
Copyright © 2005 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 paten 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 .....................................................12
Connecting the Power Supply ...................................................13
Back Panel Ports ......................................................................14
Connectors..............................................................................16
Jumpers ..................................................................................22
Slots .......................................................................................23
Chapter 3 ...................................................................................25
BIOS Setup .............................................................................25
Entering Setup.........................................................................26
Control Keys............................................................................27
Navigating the BIOS Menus......................................................28
Getting Help ............................................................................29
Main Menu ..............................................................................30
Standard CMOS Features .........................................................32
IDE Drives...............................................................................34
Advanced BIOS Features..........................................................35
Boot Sequence ........................................................................38
Hard Disk Boot Priority.............................................................40

iii
Console Redirection .................................................................41
Advanced Chipset Features ......................................................42
DRAM Clock / Drive Control ......................................................43
AGP & P2P Bridge Control ........................................................46
TV Output Connector ...............................................................48
CPU and PCI Bus Control..........................................................49
Integrated Peripherals..............................................................51
VIA OnChip IDE Device ............................................................52
VIA OnChip PCI Device ............................................................54
Super IO Device ......................................................................56
Power Management Setup........................................................58
IRQ/Event Activity Detect.........................................................61
IRQ Activity Monitoring ............................................................64
PNP/PCI Configurations............................................................65
IRQ Resources.........................................................................67
PC Health Status......................................................................68
Frequency / Voltage Control .....................................................69
Load Fail-Safe Defaults ............................................................70
Load Optimized Defaults ..........................................................71
Set Supervisor / User Password ................................................72
Save & Exit Setup ....................................................................74
Exit Without Saving..................................................................75
Chapter 4 ...................................................................................77
Driver Installation ....................................................................77
Driver Utilities..........................................................................78
CD Content .............................................................................80
Appendix A .................................................................................81
Smart 5.1................................................................................81
Enabling Smart 5.1 ..................................................................82

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1
CHAPTER 1
Specifications
The ultra-compact and highly integrated VIA VT310-DP 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 two embedded NanoBGA VIA Processors, offering ultra-
low power multi-processing, ultra fast and highly efficient on-die
security, cool running and quiter operation.

Chapter 1
2
MAINBOARD SPECIFICATIONS
CPU
• Dual VIA Eden-N NanoBGA 1.0GHz Processors
Chipset
• VIA CN400 North Bridge
• VIA VT8237R South Bridge
Graphics
• Integrated UniChrome™ Pro IGP graphics with MPEG-2 decoding /
MPEG-4 acceleration
Audio
• VIA VT1616 6-channel AC'97 Codec
Memory
• 2 x DDR 400 / 333 / 266 DIMM sockets (up to 1.5GB)
Expansion Slot
• 1 x PCI slot
IDE
• 1 x UltraDMA 133/100 EIDE connector
Serial-ATA
• 2 x S-ATA ports
LAN
• VIA VT6103L 10/100 Base-T Ethernet PHY
• i82551QM 10/100 Base-T Ethernet Controller option
• VIA VT1622 10/100/1000 Base-T Ethernet Controller (GbE LAN)

Specifications
3
Back Panel I/O Ports
• 3 x RJ45 LAN ports
• 1 x COM port
• 2 x USB 2.0 ports
• 1 x VGA port
Onboard I/O Connectors
• 1 x USB front pin header for 2 additional USB 2.0 ports
• 1 x VGA pin header for a second VGA port
• 1 x 10-pin connector for RS232
• 1 x AC’97 Audio pin header (Mic-in and Line-out)
• 1 x CD Audio-in connector
• 1 x front panel pin header for Case connector
• 1 x SM Bus connector
• 1 x PS/2 mouse pin header (headless architecture for Kb/Ms)
• 1 4-pin CPU Fan and 2 3-pin chassis Fan
• 1 x Buzzer pin header
• 1 x ATX power connector
BIOS
• Award BIOS with 4Mbit flash memory capacity
• ACPI2.0, PCI2.3 (WMX and ASF1.0)
• Console Redirection (RS-232C, USB and Ethernet)
Form Factor
• Mini-ITX (8 Layers)
• 17 cm X 17 cm

Chapter 1
4
MAINBOARD LAYOUT
CPU
CPU
CN400
North
Bridge
VT8237R
South Br i dge
PCI
CD_IN
FAN3
AUDIO
CPU
SATA1
IDE1
BUZZER
IPMB FPNL
SATA2
KBMS
BIOS
Socket
Top: RJ45 Port
Top: RJ45 Port
Bot: USB Ports
Bot: RJ45 Port
VGA1
VGA2
F_USB
COM1
COM2 PWR
DIMM1DIMM2
CMOS Battery
CLEAR_CMOS
FAN1
SYS
FAN2

Specifications
5
BACK PANEL LAYOUT
RJ45 Port
RJ45 Ports
Giga LAN
USB Ports
VGA1COM1

Chapter 1
6
BACK PANEL PORTS
Port Description Page
COM1 Serial port 1 14
RJ45 RJ45 ports 14-15
USB USB 2.0 ports 14
VGA1 VGA port 1 14
SLOTS
Port Description Page
DDR DIMM1-2 Memory module slots 12
PCI Expansion card for PCI slot 23

Specifications
7
ONBOARD CONNECTORS
Connector Description Page
ATXPWR Power cable connector 13
Buzzer Buzzer pin connector 18
CD_IN Onboard CD audio cable connector 21
COM2 COM port 2 connector 20
CPUFAN1 CPU fan connector 11
AUDIO Front Audio pin connector 21
FAN3 Extra fan connector 11
FPANL Front panel pin connector 17
F_USB Universal Serial Bus 2.0 pin connector 19
IDE1 IDE drive connector 16
KBMS Keyboard and Mouse pin connector 19
SATA1-2 Serial ATA 1 and 2 connectors 16
SM Bus SMBus pin connector for IPMB 18
SYSFAN2 System fan connector 11
VGA2 VGA port 2 pin connector 20
ONBOARD JUMPERS
Jumper Description Page
CLEAR_CMOS Reset CMOS settings 22

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 Eden-N Processors
The VIA VT310-DP Mini-ITX
mainboard includes two embedded
VIA Eden-N Processors. The dual
Eden-N Processors provides ultra-low
power consumption and advanced
thermal dissipation properties. The
dual Eden-N Processors requires only
a heatsink to provide sufficient cooling,
as a fanless solution, by satisfying the VIA recommended system-level
thermal guideline. For systems designed to include a CPU fan, please
ensure that the CPU fan is correctly installed as shown.

Installation
11
CPU Fan and System Fan: CPUFAN1, SYSFAN and FAN3
The CPUFAN1 (CPU fan), SYSFAN2 (system fan) and FAN3 runs 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.
CPUFAN_PWM is a switch that is used by high-quality fans to monitor the
system temperature and will automatically adjust according to the
environment.
CPUFAN1
Pin Signal
1 GND
2 +12V
3 FANIO1
4 CPUFAN_PWM
SYSFAN2
Pin Signal
1 NC
2 +12V
3 GND
FAN3
Pin Signal
1 NC
2 +12V
3 GND
WARNING: SYSFAN2 and FAN3 rating less than 500mA of current
is highly recommended for system stability.
CPU
FAN1
1
SYSFAN2
1
FAN3
1

Chapter 2
12
MEMORY MODULE INSTALLATION
The VIA VT310-DP Mini-ITX mainboard provides two 184-pin DIMM slots for
DDR400/333/266 SDRAM memory modules and supports the memory size
up to 1.5GB.
DDR SDRAM Module Installation Procedures
• Locate the DIMM sockets in the motherboard.
• Unlock a DIMM socket by pressing the retaining clips outward.
• Align a DIMM on the socket such that the notch on the DIMM
matches the break on the socket.
• Firmly insert the DIMM into the socket 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
DIMM1 64MB, 128MB, 256MB, 512MB, 1GB 64MB-1GB
DIMM2 64MB, 128MB, 256MB, 512MB, 1GB 64MB-1GB
Maximum supported system memory 64MB-1.5GB