VIA Technologies EPIA-P720 User Manual
Revision
1.11
user manual
EPIA-P720
Pico-ITX Mainboard
Copyright
Copyright © 2013 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.
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 (including use or connection of extra device/equipment/add-on
card) 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.
VIA Technologies, Inc. reserves the right the make changes to the products described in this manual at any
time without prior notice.
Regulatory Compliance
FCC
FCC----AAAA Radio Frequency Interference Statement
Radio Frequency Interference Statement
FCCFCC
Radio Frequency Interference Statement Radio Frequency Interference Statement
This equipment has been tested and found to comply with the limits for a class A 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
Notice 1
Notice 1Notice 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
Notice 2
Notice 2Notice 2
Shielded interface cables and A.C. power cord, if any, must be used in order to comply with the emission
limits.
Notice 3
Notice 3
Notice 3Notice 3
The product described in this document is designed for general use, VIA Technologies assumes no
responsibility for the conflicts or damages arising from incompatibility of the product. Check compatibility
issue with your local sales representatives before placing an order.
Tested To Comply
With FCC Standards
FOR HOME OR OFFICE USE
II
Battery Recycling and Disposal
Only use the appropriate battery specified for this product.
Do not re-use, recharge, or reheat an old battery.
Do not attempt to force open the battery.
Do not discard used batteries with regular trash.
Discard used batteries according to local regulations.
Safety Precautions
Always read the safety instructions carefully.
Keep this User's Manual for future reference.
All cautions and warnings on the equipment should be noted.
Keep this equipment away from humidity.
Lay this equipment on a reliable flat surface before setting it up.
Make sure the voltage of the power source and adjust properly 110/220V
before connecting the equipment to the power inlet.
Place the power cord in such a way that people cannot step on it.
Always unplug the power cord before inserting any add-on card or module.
If any of the following situations arises, get the equipment checked by
authorized 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 worked well or you cannot get it work according
to User's Manual.
• The equipment has dropped and damaged.
• The equipment has obvious sign of breakage.
Do not leave this equipment in an environment unconditioned or in a
storage temperature above 60°C (140°F). The equipment may be damaged.
Do not leave this equipment in direct sunlight.
Never pour any liquid into the opening. Liquid can cause damage or
electrical shock.
Do not place anything over the power cord.
Do not cover the ventilation holes. The openings on the
enclosure protect the equipment from overheating
III
IV
Box Contents
1 x EPIA-P720 Pico-ITX mainboard
1 x P720-A I/O module board
1 x SATA cable
1 x SATA power cable
1 x DC-In cable
V
T
ABLE OF
C
ONTENTS
1 Product Overview............................................................................................... 1
Key Components .................................................................................................2
VIA Eden ULV 1.0GHz NanoBGA2 Processor ................................2
VIA VX855 Media System Processor..................................................... 2
Mainboard Specifications ................................................................................3
EPIA-P720 Layout ................................................................................................ 4
Top Side ..............................................................................................................4
Bottom Side.......................................................................................................5
P720-A I/O Module Layout ............................................................................6
Front View.........................................................................................................6
Top View ............................................................................................................ 6
Bottom View..................................................................................................... 6
Development Kit Accessories ........................................................................7
DC-In Cable....................................................................................................... 7
Power Brick........................................................................................................ 7
2 Onboard Connectors, Slots and Pin Headers .......................................9
Top Side Connectors .......................................................................................10
VIA Eden ULV 1.0GHz with a Fanless Heatsink..................................10
System Fan connector: FAN1 ................................................................10
DC-In Power connector: PWR1 ............................................................11
Serial ATA Power connector: PWR2 ...................................................11
Serial ATA connector: SATA1 .................................................................12
HDMI® port connector: HDMI1............................................................12
IDE pin header: IDE1..................................................................................13
Ethernet LAN pin header: CN3.............................................................14
VGA and USB pin header: VGA_USB1 ............................................15
Front Audio pin header: CN1................................................................16
USB pin header: CN2 .................................................................................17
Front Panel and PS/2 KBMS pin header: CN4 ...............................18
LPC, SMBus and Digital I/O pin header: CN5................................19
UART port 2: J1 .............................................................................................20
Bottom Side Connector..................................................................................21
UART port 1: J2 .............................................................................................21
LVDS Panel connector: LVDS1..............................................................22
External Battery: BAT1................................................................................23
Memory Module Installation...................................................................24
Pin Header and Connector Vendor Lists...............................................26
3 Onboard Jumpers ............................................................................................27
Clear CMOS jumper: JM1.........................................................................28
LCD Panel Power Selector: JM2............................................................29
LCD Backlight Power Selector: JM3 ....................................................29
4 P720-A I/O Module Installation ................................................................31
P720-A Installation Procedure.....................................................................32
5 BIOS Setup............................................................................................................35
Entering the BIOS Setup Menu ..................................................................36
Control Keys .........................................................................................................36
Getting Help ........................................................................................................37
Main Menu ...........................................................................................................38
AMIBIOS............................................................................................................38
Processor ..........................................................................................................38
System Memory.............................................................................................38
System Time ....................................................................................................38
System Date ....................................................................................................38
Advanced Settings............................................................................................39
CPU Configuration ......................................................................................39
IDE Configuration ........................................................................................39
ACPI Configuration .....................................................................................39
APM Configuration .....................................................................................39
Spread Spectrum Configuration...........................................................39
USB Configuration.......................................................................................39
CPU Configuration ...........................................................................................40
CMPXCHG8B instruction support........................................................40
IDE Configuration .............................................................................................41
Parallel ATA IDE Controller......................................................................41
Hard Disk Write Protect ............................................................................41
IDE Detect Time Out (Sec).......................................................................41
ATA(PI) 80Pin Cable Detection .............................................................41
IDE Drives..............................................................................................................42
Primary IDE Master ......................................................................................42
Primary IDE Slave (SATA Device)..........................................................42
Type.....................................................................................................................42
LBA/Large Mode..........................................................................................42
Block (Multi-Sector Transfer)....................................................................43
PIO Mode.........................................................................................................43
DMA Mode .....................................................................................................43
S.M.A.R.T............................................................................................................43
32Bit Data Transfer......................................................................................43
ACPI Settings........................................................................................................44
General ACPI Configuration...................................................................44
Advanced ACPI Configuration ..............................................................44
VI
Chipset ACPI Configuration ....................................................................44
General ACPI Configuration ........................................................................45
Suspend Mode ..............................................................................................45
Repost Video on S3 Resume ..................................................................45
Advanced ACPI Configuration ...................................................................46
ACPI Version Features ...............................................................................46
ACPI APIC Support.......................................................................................46
AMI OEMB Table..........................................................................................46
Headless Mode..............................................................................................46
Chipset ACPI Configuration .........................................................................47
USB Device Wakeup Function..............................................................47
APM Configuration...........................................................................................48
Power Management / APM ...................................................................48
Power Button Mode...................................................................................48
Suspend Power Saving Type..................................................................48
Restore on AC / Power Loss ...................................................................48
Manual Throttle Ratio.................................................................................48
System Thermal .............................................................................................49
Standby Time Out........................................................................................49
Suspend Time Out.......................................................................................49
Hard Disk Time Out (Minute).................................................................49
Green PC Monitor Power State.............................................................49
Video Power Down Mode......................................................................49
Hard Disk Power Down Mode .............................................................49
Display Activity...............................................................................................49
Monitor IRQ3~15.........................................................................................49
Resume on Ring............................................................................................50
Resume on PME#.........................................................................................50
Resume On PS/2 KBC ................................................................................50
Wake-up Key ..................................................................................................50
Resume on PS/2 Mouse............................................................................50
Resume on RTC Alarm...............................................................................50
Spread Spectrum Configuration ................................................................51
Spread Spectrum Configuration...........................................................51
USB Configuration ............................................................................................52
USB 1.1 Ports Configuration ...................................................................52
USB 2.0 Ports Enable ..................................................................................52
USB Device Mode Enable........................................................................52
Legacy USB Support...................................................................................52
USB 2.0 Controller Mode .........................................................................52
BIOS EHCI Hand-Off ...................................................................................52
Advanced PCI/PnP Settings..........................................................................53
Clear NVRAM .................................................................................................53
Plug & Play O/S.............................................................................................53
VII
PCI Latency Timer.........................................................................................53
Allocate IRQ to PCI VGA...........................................................................53
Palette Snooping ..........................................................................................53
PCI IDE BusMaster........................................................................................54
Off Board PCI/ISA IDE Card ....................................................................54
IRQ3~15 ...........................................................................................................54
DMA Channel 0~7 .....................................................................................54
Reserved Memory Size...............................................................................54
Boot Settings........................................................................................................55
Boot Settings Configuration....................................................................55
Boot Device Priority.....................................................................................55
Boot Settings Configuration.........................................................................56
Quick Boot.......................................................................................................56
Display Logo...................................................................................................56
AddOn ROM Display Mode....................................................................56
Bootup Num-Lock .......................................................................................56
PS/2 Mouse Support...................................................................................56
Wait For ‘F1’ If Error....................................................................................56
Hit ‘DEL’ Message Display........................................................................56
Interrupt 19 Capture...................................................................................57
Boot Device Priority ..........................................................................................58
1st Boot Device .............................................................................................58
Security Settings..................................................................................................59
Change Supervisor Password ................................................................59
Change User Password ............................................................................59
Boot Sector Virus Protection...................................................................59
Advanced Chipset Settings...........................................................................60
North Bridge VIA VX855 Configuration...........................................60
South Bridge VIA VX855 Configuration...........................................60
North Bridge VIA VX855 Configuration................................................61
Software Reset E2 Issue.............................................................................61
Change DCLK using RDCKM .................................................................61
Dynamic CKE..................................................................................................61
NB Performance Register .........................................................................61
NB Energy Saving Register......................................................................61
OnChip VGA Configuration ........................................................................62
VGA Frame Buffer Size..............................................................................62
CPU Direct Access Frame Buffer ..........................................................62
Select Display Device..................................................................................62
Panel Type .......................................................................................................62
Dithering ..........................................................................................................62
Backlight Control ..........................................................................................62
South Bridge VIA VX855 Configuration ................................................63
Parallel Channel Enable ............................................................................63
VIII
ISA Master Support......................................................................................63
High Definition Audio................................................................................63
Enable Embedded COM..........................................................................63
PCI Debug Master Mode..........................................................................63
SMBus Multi-Master.....................................................................................63
PCI VCC33 Leakage Patch.......................................................................63
PCI Delay Transaction ................................................................................64
WATCH-DOG ................................................................................................64
Exit Options ..........................................................................................................65
Save Changes and Exit ..............................................................................65
Discard Changes and Exit........................................................................65
Discard Changes ..........................................................................................65
Load Optimal Defaults...............................................................................65
6 Driver Installation...............................................................................................67
Microsoft Driver Support................................................................................68
Linux Driver Support........................................................................................68
IX
X
1
Product Overview
1
The VIA EPIA-P720 is an ultra-compact and highly integrated PicoITX mainboard and the smallest stand-alone form-factor available
today. Through a high level of integration, the Pico-ITX form factor
is 75% smaller than the existing Mini-ITX form factor. The
mainboard enables the creation of an exciting new generation of
small, ergonomic, innovative and affordable embedded systems.
The VIA EPIA-P720 Pico-ITX mainboard is rich in I/O integration
and comes with an integrated VIA Eden ULV 1.0GHz NanoBGA2
processor, boasting of ultra-low power consumption and cool
operation.
KEY COMPONENTS
VIA Eden ULV 1.0GHz NanoBGA2 Processor
Due to its ultra cool, ultra quiet, and reliable performance, the VIA
Eden ULV 1.0GHz NanoBGA2 processor is a perfect fit for thin
client, set top boxes, silent desktop. With a maximum power
envelope of 3.5W, the VIA Eden ULV 1.0GHz NanoBGA2
processor offers impressive power efficiency and highly effective
heat dissipation all within an ultra compact NanoBGA2 package
measuring just 21mm x 21mm. When combined with the most
recent VIA VX855 Media System Processor (MSP), which have
been designed as companion sets for the latest VIA processors,
system developers can utilize an impressive range of features for a
wide range of desktop and embedded applications.
VIA VX855 Media System Processor
The VIA VX855 MSP integrates a premium graphics engine, an
HD audio controller, a DDR2 memory controller, a 400MHz FSB
processor interface, and extensive I/O capabilities support in a
single chip design. Complementing the power-efficient VIA Eden
ULV 1.0GHz NanoBGA2 processor, the VX855 is based on a
highly sophisticated power efficient architecture that enables such
rich integration into a compact package with a maximum power
envelope of just 2.3 W.
2
MAINBOARD SPECIFICATIONS
CPU
Chipset
Graphics
System Memory
Onboard Storage
Audio
LAN
Onboard I/O
Connectors
I/O Ports
System Monitoring
and Management
BIOS
Operating System
Operating
Environment
Compliance
Dimensions
Form Factor
VIA Eden ULV 1.0 GHz NanoBGA2 processor
• NanoBGA2 package
• 400 MHz Front Side Bus
VIA VX855 All-in-One System Processor
Integrated VIA ChromeTM 9 HCM DX9 with MPEG-2
Accelerators
One DDR2 800/667 SODIMM slot (up to 2 GB)
One UltraDMA 133/100/66/33 44-pin IDE connector
One SATA 3Gb/s connector
VIA VT1708B High Definition Audio Codec
One VIA VT6122 Gigabit Ethernet controller
One Audio pin connector for Line-out, Line-in and Mic-in
One Single-channel LVDS connector (5V/3V)
One LPC pin connector
One SMBus pin connector
One DIO pin connector(4 GPI & 4 GPO)
Two UART port
One SYS fan connector
One PS2 mouse/keyboard pin header
One USB pin header
One Front panel pin header
One Backlight control pin header
One SATA power connector
One +12V DC-in 2-pin connector
One HDMI® port
One VGA port
One GigaLAN port
Two USB ports
Wake-On-LAN and Keyboard Power-on
RTC Timer
Watch Dog Timer
System power management, AC power failure
AMI BIOS with 4Mbit LPC flash memory
Windows XP/Windows CE/Windows XPe and Linux
Temperature: 0°C up to 60°C
Humidity: 0% ~ 95% (relative humidity; noncondensing)
CE/FCC/BSMI/RoHS
135 mm(w) x 45 mm(H) x 131 mm (D)
Pico-ITX
10 cm x 7.2 cm
3
EPIA-P720 LAYOUT
Top Side
Symbol
Symbol Description
SymbolSymbol
CN1 Front Audio pin header PWR1 DC-In power connector
CN2 USB and USB Device port
CN3 LAN Ethernet pin header FAN1 System Fan connector
CN4 Front Panel and PS/2
CN5 LPC, SMBus and Digital
JM1 Clear CMOS jumper HDMI1
JM2 Panel Power Selector SATA1 SATA port
JM3 Panel Backlight Power
Description Symbol
DescriptionDescription
pin header
KBMS pin header
I/O pin header
Selector
Symbol Description
SymbolSymbol
PWR2 SATA Power connector
VGA_USB1 VGA and USB pin header
IDE1 IDE pin header
J1 UART port 2
Description
DescriptionDescription
HDMI® port
4
Bottom Side
Symbol
Symbol
SymbolSymbol
BAT1 CMOS Battery connector SODIMM1 DDR2 SODIMM slot
LVDS1 1-CH LVDS Panel connector
Description
Description Symbol
DescriptionDescription
Symbol Description
SymbolSymbol
J2 UART port 1
Description
DescriptionDescription
5
P720-A I/O MODULE LAYOUT
The VIA EPIA-P720 Pico-ITX mainboard is bundled with an I/O
board (P720-A) to support connections to LAN, VGA and USB.
Front View
Top View
Bottom View
Symbol
Symbol Description
SymbolSymbol
VGA1 VGA port
USB1 USB 2.0 port 1
USB2 USB 2.0 port 2
RJ1 RJ-45 LAN port
CON1 VGA & USB board-to-board connector
CON2 LAN board-to-board connector
Description
DescriptionDescription
6
DEVELOPMENT KIT ACCESSORIES
DC-In Cable
The DC-In power cable provides a means to connect to the power
brick.
Power Brick
The power brick provides a regulated 12V/5A output to power up
the EPIA-P720 mainboard.
Note:
The Power brick is not included in the package of EPIA-P720
and this item should be purchased separately.
7
8
2
Onboard
Connectors, Slots
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.
and Pin Headers
9
TOP SIDE CONNECTORS
VIA Eden ULV 1.0GHz with a Fanless Heatsink
The VIA EPIA-P720 Pico-ITX mainboard is packaged with a
standard VIA Eden ULV 1.0GHz NanoBGA2 processor. The
processor does not require a heatsink with fan because of it highly
power efficient and ultra cool performance.
System Fan connector: FAN1
FAN1 runs on +5V and maintains system cooling. When
connecting the cable to the connector, always be aware that the
red wire (positive wire) should be connected to the +5V pin. The
black wire is the ground wire and should always be connected to
GND.
Pin Signal
1 +5V
2 GND
10
DC-In Power connector: PWR1
EPIA-P720 has an onboard DC-In 2-pin power connector to
connect the DC-In power cable.
Pin Signal
1 DC In (+12V)
2 GND
Serial ATA Power connector: PWR2
The mainboard supports a 3-pin SATA power connector for SATA
power cable. Plug the SATA power cable into the SATA power
connector. Make sure the power plug is inserted in the proper
orientation and pins are aligned.
Pin Signal
1 +5V
2 +12V
3 GND
11
Serial ATA connector: SATA1
The current SATA interface allows a data transfer rate of up to 300
MB/s — approximately 225% faster than Ultra DMA parallel ATA.
HDMI® port connector: HDMI1
The mainboard has a High Definition Multimedia Interface port for
connecting to high definition video and digital audio. The HDMI®
port allows you to connect digital video devices which utilize a
high definition video signal. The HDMI® port is HDCP 1.2
compatible.
Note:
CEC feature is not supported.
12
IDE pin header: IDE1
The mainboard has an Ultra DMA 133/100 controller. You can
connect up to two IDE devices in any combination.
Pin Signal Pin Signal
1 -IDERST 2 GND
3 PDD7 4 PDD8
5 PDD6 6 PDD9
7 PDD5 8 PDD10
9 PDD4 10 PDD11
11 PDD3 12 PDD12
13 PDD0 14 PDD13
15 PDD1 16 PDD14
17 PDD2 18 PDD15
19 GND 20 KEY
21 PDDREQ 22 GND
23 PDDIOW 24 GND
25 PDDIOR 26 GND
27 PIORDY 28 GND
29 PDDACK 30 GND
31 -IRQ14 32 NC
33 PDA1 34 PDIAG
35 PDA0 36 PDA2
37 PDCS1 38 PDCS3
39 -HD_LED1 40 GND
41 +5V 42 +5V
43 GND 44 NC
13
Ethernet LAN pin header: CN3
The Ethernet LAN pin header is for connecting to the P720-A I/O
module.
Pin Signal Pin Signal
1 A3V3GL(+3.3V) 2 +3.3VSUS
3 TXNC 4 TXND
5 TXPC 6 TXPD
7 TXNA 8 TXNB
9 TXPA 10 TXPB
11 GND 12 LED1
13 LED2 14 LINK ACT
14
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