VIA Technologies EPIA LT-Series User manual

June 15, 2007 Version 1.01
Operating Guide
EPIA LT-Series Mini-ITX Mainboard

EPIA LT-Series Operating Guide
June 15, 2007 - i - Version 1.01
Table of Contents
Table of Contents.............................................................................................................................................................................i
VIA EPIA LT-Series Overview .....................................................................................................................................................1
VIA EPIA LT-Series Layout..........................................................................................................................................................2
VIA EPIA LT-Series Specifications ..............................................................................................................................................3
VIA EPIA LT Processor SKUs......................................................................................................................................................4
VIA CX700 Chipset Overview.......................................................................................................................................................5
VIA EPIA LT-Series I/O Back Panel Layout...............................................................................................................................6
VIA EPIA LT-Series Layout Diagram & Mounting Holes .........................................................................................................7
VIA EPIA LT-Series Layout Diagram & Height Distribution ...................................................................................................8
Power Consumption .......................................................................................................................................................................9
VIA EPIA LT15000G (WITH C7) ................................................................................................................................................. 9
VIA EPIA LT15000G (WITH C7-D)...........................................................................................................................................11
Power Specifications.....................................................................................................................................................................13
VIA EPIA LT-Series Microsoft and Linux Driver Support......................................................................................................14
MICROSOFT DRIVER SUPPORT......................................................................................................................................................14
LINUX DRIVER SUPPORT..............................................................................................................................................................14
Contact...........................................................................................................................................................................................15

EPIA LT-Series Operating Guide
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VIA EPIA LT-Series Overview
The VIA EPIA LT-Series Mini-ITX Mainboard is an ultra compact native x86 platform
optimized for today's demanding embedded and productivity applications. The mainboard is
based on the VIA CX700 chipset featuring an embedded hardware MPEG-2 accelerator and
integrated VIA UniChrome™ Pro II 3D/2D graphics for rich digital media performance. With
the sizable memory bandwidth of DDR2 533MHz SDRAM DIMM and the high data transfer
speed of ATA-133 and further enhanced by support of VIA VT1708A High Definition Audio
codec, the VIA EPIA LT-Series delivers the increased performance levels required by today’s
embedded digital media applications.
The latest in high-bandwidth connectivity is supported with 4 USB 2.0 ports, as well as a
COM port and has two 10/100 Fast Ethernet ports for extended broadband connectivity.
The VIA EPIA LT-Series also has one PCI slot for expandability options. The VIA EPIA LT-
Series is compatible with a full range of Mini-ITX chassis as well as FlexATX and MicroATX
enclosures and power supplies.
The VIA EPIA LT-Series is fully compatible with Microsoft®and Linux operating systems and
is available in a variety of configurations, including the latest VIA C7® V4 Bus NanoBGA2
processor for small, low power and secure x86 processor platforms.

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VIA EPIA LT-Series Layout

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VIA EPIA LT-Series Specifications
Model Name - EPIA - LT15000G - EPIA LT10000EG
Processor - VIA C7®1.5GHz NanoBGA2
processor - VIA C7®1.0GHz NanoBGA2 processor
Chipset - VIA CX700 Advanced All-in-One system processor
System Memory - 1 DDR2 533 DIMM slot
- Up to 1GB memory size
VGA - Integrated VIA UniChrome™ Pro II 3D/2D AGP graphics with
MPEG-2 video decoding acceleration
Expansion Slots - 1 PCI slot
Onboard IDE - 1 UltraDMA 133/100/66 connector
Onboard Serial ATA - 2 SATA connectors
Onboard LAN - 1 VIA VT6107 10/100 Mbps Fast Ethernet Controller
- 1 VIA VT6107 10/100 Mbps Fast Ethernet Controller / 1 VIA
VT6122 Gigabit LAN Controller (Manufacturing Option)
Onboard Audio - VIA VT1708A High Definition Audio Codec
Onboard I/O Connectors - 3 Serial port pin headers for COM2/3/4 (with 5V/12V select
jumper)
- 1 Digital I/O pin header
- 1 USB pin header for 2 USB 2.0 ports
- 1 LPC connector
- 1 SMBus & Security pin header
- 1 Front Panel Audio pin header
- 1 Parallel Port pin header
- 1 LVDS Module connector
- 1 LVDS Panel Power Selector pin header
- 1 LVDS Inverter pin header
- 1 CIR pin header (Convertible to KB/MS)
- 2 Fan connector for CPU fan & SYS fan
- 1 Front Panel connector
- 1 ATX Power connector
- 1 TV-out pin header (Manufacturing Option with CX700M2)
Back Panel I/O - 1 VGA connector
- 1 COM port
- 2 RJ45 LAN ports
- 4 USB 2.0 ports
- 3 Audio jacks: Mic-In, Line-In & Line-Out
- 1 PS2 KB/MS connector
BIOS AMI BIOS, LPC 2/4/8Mbit flash memory
Operating System Windows 2000/XP, Linux, Win CE, XPe
System Monitoring &
Management - AC Power failure recovery
- RTC timer power-on, Wake-on-LAN/Keyboard/Mouse
- Watch Dog Timer
Operating Temperature 0°C ~ 50°C
Operating Humidity 0% ~ 95% (relative humidity; non-condensing)
Form Factor - Mini-ITX (6-layer)
- 17cm x 17cm
* The specification is subject to change without prior notice.

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VIA EPIA LT Processor SKUs
The VIA EPIA LT-Series is available in two speed grades as follows:
• 1.5 GHz VIA C7®NanoBGA2 Processor
• 1.0 GHz VIA C7®NanoBGA2 Processor

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VIA CX700 Chipset Overview
The VIA CX700 Chipset is designed to enable high quality digital video streaming and DVD
playback in a new generation of fanless, small form factor PCs and IA devices. The CX700
features the embedded VIA UniChrome™ Pro 2D / 3D MPEG-2 acceleration, DDR2 533 /
400MHz support, motion compensation and duo-view support to ensure a rich overall
entertainment experience. Outstanding connectivity features include USB 2.0, 10/100 LAN
and ATA/133.

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VIA EPIA LT-Series I/O Back Panel Layout
The EPIA LT’s ultra compact 17cm x 17cm, integrated design supports all the standard
legacy x86 connectivity options as well as PS/2 Mouse port, PS/2 Keyboard port, COM port,
VGA port, RJ45 LAN ports, USB 2.0 ports, and audio jacks.

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VIA EPIA LT-Series Layout Diagram & Mounting Holes

EPIA LT-Series Operating Guide
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VIA EPIA LT-Series Layout Diagram & Height Distribution

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Power Consumption
Power consumption tests were carried out comparing the VIA EPIA LT15000G (running with
the VIA 1.5GHz C7®/ C7®-D V4 Bus NanoBGA2 processor). The following tables are a
comprehensive breakdown of the EPIA platform’s voltage, amp and wattage values while
running common system applications.
VIA EPIA LT15000G (with C7)
A. IDEL Status Measured Voltage Measured Amp. Watts
Main Board +3.3V 3.336 1.394 4.650
Main Board +5V 5.029 1.303 6.553
Main Board 5VSB 5.027 0.103 0.518
Main Board +12V 12.146 0.254 3.085
14.806
Main Board Power Consumption
B. MP3 Playing – Media Player
Measured Voltage Measured Amp. Watts
Main Board +3.3V 3.310 1.395 4.617
Main Board +5V 4.980 2.392 11.912
Main Board 5VSB 5.000 0.125 0.625
Main Board +12V 12.162 0.243 2.955
20.109
Main Board Power Consumption
C. DVD Playing – Power DVD 5.0
Measured Voltage Measured Amp. Watts
Main Board +3.3V 3.298 1.427 4.706
Main Board +5V 4.970 2.146 10.666
Main Board 5VSB 4.987 0.120 0.598
Main Board +12V 12.151 0.239 2.904
18.874
Main Board Power Consumption
D. Running Network Application – Files Copy (VT6107-1)
Measured Voltage Measured Amp. Watts
Main Board +3.3V 3.324 1.381 4.590
Main Board +5V 5.013 1.430 7.169
Main Board 5VSB 5.015 0.108 0.542
Main Board +12V 12.142 0.244 2.963
15.264
Main Board Power Consumption

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E. Running Network Application – Files Copy (VT6107-2)
Measured Voltage Measured Amp. Watts
Main Board +3.3V 3.317 1.389 4.607
Main Board +5V 5.004 1.532 7.666
Main Board 5VSB 5.007 0.111 0.556
Main Board +12V 12.138 0.246 2.986
15.815
Main Board Power Consumption
F. Run C.C. Winstone 2004
Measured Voltage Measured Amp. Watts
Main Board +3.3V 3.289 1.373 4.516
Main Board +5V 4.952 2.643 13.088
Main Board 5VSB 4.978 0.131 0.652
Main Board +12V 12.148 0.244 2.964
21.220
Main Board Power Consumption
G. S3 Mode Measured Voltage Measured Amp. Watts
Main Board +3.3V 0.000 0.000 0.000
Main Board +5V 0.000 0.000 0.000
Main Board 5VSB 5.079 0.173 0.879
Main Board +12V 0.000 0.000 0.000
0.879
Main Board Power Consumption

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VIA EPIA LT15000G (with C7-D)
A. IDEL Status Measured Voltage Measured Amp. Watts
Main Board +3.3V 3.299 1.392 4.592
Main Board +5V 4.993 1.020 5.093
Main Board 5VSB 4.987 0.104 0.519
Main Board +12V 12.090 0.256 3.095
13.299
Main Board Power Consumption
B. MP3 Playing – Media Player
Measured Voltage Measured Amp. Watts
Main Board +3.3V 3.215 1.403 4.511
Main Board +5V 4.880 2.210 10.785
Main Board 5VSB 4.900 0.136 0.666
Main Board +12V 12.052 0.256 3.085
19.047
Main Board Power Consumption
C. DVD Playing – Power DVD 5.0
Measured Voltage Measured Amp. Watts
Main Board +3.3V 3.185 1.467 4.672
Main Board +5V 4.853 1.958 9.502
Main Board 5VSB 4.869 0.131 0.638
Main Board +12V 12.026 0.255 3.067
17.879
Main Board Power Consumption
D. Running Network Application – Files Copy (VT6107-1)
Measured Voltage Measured Amp. Watts
Main Board +3.3V 3.224 1.423 4.588
Main Board +5V 4.912 1.254 6.160
Main Board 5VSB 4.911 0.115 0.565
Main Board +12V 12.027 0.258 3.103
14.416
Main Board Power Consumption

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E. Running Network Application – Files Copy (VT6107-2)
Measured Voltage Measured Amp. Watts
Main Board +3.3V 3.214 1.430 4.596
Main Board +5V 4.900 1.338 6.556
Main Board 5VSB 4.901 0.120 0.588
Main Board +12V 12.021 0.259 3.113
14.853
Main Board Power Consumption
F. Run C.C. Winstone 2004
Measured Voltage Measured Amp. Watts
Main Board +3.3V 3.182 1.381 4.394
Main Board +5V 4.850 2.087 10.122
Main Board 5VSB 4.867 0.133 0.647
Main Board +12V 12.014 0.258 3.100
18.263
Main Board Power Consumption
G. S3 Mode Measured Voltage Measured Amp. Watts
Main Board +3.3V 0.000 0.000 0.000
Main Board +5V 0.000 0.000 0.000
Main Board 5VSB 5.076 0.185 0.939
Main Board +12V 0.000 0.000 0.000
0.939
Main Board Power Consumption

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Power Specifications
The EPIA LT utilizes an industry standard 20-pin ATX main connector to the power supply.
Due to the EPIA LT platform’s ultra low power requirements a 90 – 120 Watt ATX power
supply is ample for even the heaviest of multimedia system applications.
1 +3V 11 +3V
2 +3V 12 -12V
3 Gnd 13 Gnd
4 +5V 14 PS_ON
5 Gnd 15 Gnd
6 +5V 16 Gnd
7 Gnd 17 Gnd
8 PW_OK 18 -5V
9 5V_SB 19 +5V
10 +12V 20 +5V
Note: NC = no connection
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VIA EPIA LT-Series Microsoft and Linux Driver Support
Microsoft Driver Support
VIA EPIA LT series offers full support for the complete range of Microsoft operating systems.
For standard operating systems, Windows 98/Me/2000/XP latest drivers downloads can be
found in the VEPD website at www.viaembedded.com.
For embedded operating systems, Windows CE.NET and XP Embedded related driver
supports can be found in the VIA Arena website at www.viaarena.com.
Linux Driver Support
VIA EPIA LT mainboards have a very high degree of support under Linux.
Support and drivers are provided through various methods including:
• Drivers provided by VIA
– Using a driver built into a distribution package
– Visiting VIA Arena website at www.viaarena.com for latest updates on a monthly
basis
• Installing a third party driver (such as the ALSA driver from the Advanced Linux
Sound Architecture project for integrated audio)
For OEM clients and system integrators developing a product for long term production, other
code and resources may also be made available. You can submit a request either through
the Developers portal on VIA Arena, or through your VEPD support contact. Alternatively,
VIA can work further towards providing additional drivers to suite your specific needs.

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Contact
For more information on the VIA EPIA LT-Series Mini ITX Mainboard contact your sales
representative or visit our website at www.viaembedded.com
USA
440 Mission Court, Suite 220
Fremont, CA 94539
Tel: [phone]
Fax: [phone]
Email: [email protected]
Germany
Mottmann Strasse 12
53842 Troisdorf-Oberlar
Tel: [phone]
Fax: [phone]
Email: [e-mail]
Taiwan
1F, No. 531, Chung Cheng Road
Hsin Tien, Taipei
Tel: [phone]
Fax: [phone]
Email: [email protected]
China
6F, DAscom Tower
9 Shangdi East Road
Haidian District
Beijing, 100085
Tel: [phone]
Fax: [phone]
Email: [email protected].cn