VIA Technologies EPIA-M840, EPIA-M840-16, EPIA-M840-12 User Manual
Revision
1.06
user manual
EPIA-M840
Mini-ITX Embedded Board
Copyright
Copyright © 2010 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.
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.
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-A 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
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
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.
II
Safety Precautions
Do’s
o Always read the safety instructions carefully.
o Keep this User's Manual for future reference.
o All cautions and warnings on the equipment should be
noted.
o Keep this equipment away from humidity.
o Lay this equipment on a reliable flat surface before setting
it up.
o Make sure the voltage of the power source and adjust
properly 110/220V before connecting the equipment to the
power inlet.
o Place the power cord in such a way that people cannot
step on it.
o Always unplug the power cord before inserting any add-on
card or module.
o If any of the following situations arises, get the equipment
checked by authorized service personnel:
o The power cord or plug is damaged.
o Liquid has penetrated into the equipment.
o The equipment has been exposed to moisture.
o The equipment has not worked well or you cannot
get it work according to User's Manual.
o The equipment has dropped and damaged.
o The equipment has obvious sign of breakage.
Don’ts
o Do not leave this equipment in an environment
unconditioned or in a storage temperature above 60°C
(140°F). The equipment may be damaged.
o Do not leave this equipment in direct sunlight.
o Never pour any liquid into the opening. Liquid can cause
damage or electrical shock.
o Do not place anything over the power cord.
o Do not cover the ventilation holes. The openings on the
enclosure protect the equipment from overheating
III
IV
Box Contents and Ordering Information
Model Number Description
EPIA-M840-16 Standard kit
EPIA-M840-12 Standard kit
1 x SATA cable
1 x I/O bracket
1 x Driver CD
1 x SATA cable
1 x I/O bracket
1 x Driver CD
V
T
ABLE OF
C
ONTENTS
1 Overview .................................................................................................................1
Key Components ................................................................................................. 2
VIA Nano™ NanoBGA2 CPU ..................................................................2
VIA VX800 System Processor ................................................................... 2
Layout (top view) ................................................................................................ 3
Layout (I/O panel)...............................................................................................5
Specifications ......................................................................................................... 6
2 Hardware Installation........................................................................................ 8
External I/O ............................................................................................................9
PS/2 ports........................................................................................................... 9
VGA port ............................................................................................................9
COM ports ......................................................................................................... 9
Gigabit LAN ports ..........................................................................................9
USB ports............................................................................................................ 9
Audio ports........................................................................................................ 9
Onboard connectors.......................................................................................10
LVDS panel connectors ............................................................................10
Inverter connectors .....................................................................................12
SATA connectors..........................................................................................13
SATA power connectors ..........................................................................14
IDE connector................................................................................................15
Compact Flash slot ......................................................................................16
PCIe slot.............................................................................................................17
USB pin header .............................................................................................17
RS232 COM pin headers..........................................................................18
Digital I/O pin headers..............................................................................19
LPT pin header...............................................................................................20
LPC pin header..............................................................................................21
FIR pin header................................................................................................22
SMBus pin header........................................................................................22
MFX pin header ............................................................................................23
SPI pin header................................................................................................23
SPDIF connector...........................................................................................24
PS/2 keyboard and mouse pin header .............................................24
Front audio pin header.............................................................................25
Front panel pin header .............................................................................25
Memory module slots ................................................................................26
CPU fan and system fan connectors ..................................................28
Thermal sensor pin header .....................................................................28
ATX power connector...............................................................................29
DC-in power connector............................................................................30
CMOS battery.................................................................................................30
Onboard Jumpers ............................................................................................31
LVDS jumper settings.................................................................................31
LVDS2 jumper settings ..............................................................................31
SATA DOM power select .........................................................................32
CF power select ............................................................................................32
IDE DOM power select .............................................................................33
COM power select.......................................................................................33
Clear CMOS jumper....................................................................................34
AT/ATX mode jumper ...............................................................................35
3 BIOS Setup............................................................................................................36
Entering the BIOS Setup Menu ..................................................................37
Control Keys .........................................................................................................37
Getting Help ........................................................................................................38
Main Menu ...........................................................................................................39
Standard CMOS Features.........................................................................39
Advanced BIOS Features .........................................................................39
Advanced Chipset Features....................................................................39
Integrated Peripherals................................................................................39
Power Management Setup.....................................................................39
PnP/PCI Configurations.............................................................................39
PC Health Status............................................................................................40
Frequency/Voltage Control....................................................................40
Load Optimized Defaults..........................................................................40
Set Supervisor Password ...........................................................................40
Set User Password .......................................................................................40
Save & Exit Setup ..........................................................................................40
Exit Without Saving.....................................................................................40
Standard CMOS Features..............................................................................41
Date ....................................................................................................................41
Time ....................................................................................................................41
Video..................................................................................................................41
Halt On..............................................................................................................41
HDD Channels ...................................................................................................42
Advanced BIOS Features...............................................................................43
Virus Warning................................................................................................43
CPU L1 & L2 Cache.....................................................................................43
CPU L2 Cache ECC Checking................................................................43
Quick Power On Self-Test.........................................................................44
VI
First/Second/Third Boot Device............................................................44
Boot Other Device.......................................................................................44
Boot Up NumLock Status.........................................................................44
Typematic Rate Setting ..............................................................................44
Typematic Rate (Chars/Sec) ....................................................................45
Typematic Delay (Msec)............................................................................45
Security Option..............................................................................................45
MPS Version Control for OS....................................................................45
OS Select for DRAM > 64MB ..................................................................45
HDD S.M.A.R.T Capability .........................................................................45
Video BIOS Shadow ...................................................................................45
Full Screen Logo Show .............................................................................46
Summary Screen Show.............................................................................46
CPU Features.......................................................................................................47
Thermal Management...............................................................................47
Hard Disk Boot Priority....................................................................................48
Advanced Chipset Features .........................................................................49
Memory Hole .................................................................................................49
System BIOS Cacheable ............................................................................49
Video RAM Cacheable ..............................................................................49
Internal VGA Control.......................................................................................50
VGA Share Memory Size ..........................................................................50
Direct Frame Buffer.....................................................................................50
Select Display Device..................................................................................50
Panel Type .......................................................................................................51
CPU & PCI Bus Control ...................................................................................52
PCI Master 0 WS Write ..............................................................................52
PCI Delay Transaction ................................................................................52
Integrated Peripherals.....................................................................................53
Onboard LAN Boot ROM ........................................................................53
VIA OnChip IDE Device .................................................................................54
CF Card UDMA66 .......................................................................................54
SATA Controller.............................................................................................54
IDE DMA Transfer Access ........................................................................54
OnChip IDE Channel 1 .............................................................................54
IDE Prefetch Mode ......................................................................................54
Secondary Master PIO ...............................................................................54
Secondary Slave PIO...................................................................................54
Secondary Master UDMA ........................................................................54
Secondary Slave UDMA............................................................................55
IDE HDD Block Mode ................................................................................55
VIA OnChip PCI Device..................................................................................56
Azalia HDA Controller................................................................................56
SuperIO Device...................................................................................................57
VII
Serial ports........................................................................................................57
Onboard Parallel Port.................................................................................57
Parallel Port Mode........................................................................................58
ECP Mode Use DMA ..................................................................................58
Internal IrDA Controller.............................................................................58
IR IRQ..................................................................................................................58
IR DMA ..............................................................................................................58
USB Device Setting ...........................................................................................59
USB 1.0 Controller .......................................................................................59
USB 2.0 Controller .......................................................................................59
USB Operation Mode ................................................................................59
USB Keyboard Function............................................................................59
USB Mouse Function .................................................................................59
USB Storage Function................................................................................60
Power Management Setup..........................................................................61
ACPI Suspend Type .....................................................................................61
Power Management Option..................................................................61
HDD Power Down .....................................................................................62
Suspend Mode ..............................................................................................62
Video Off Option..........................................................................................62
Video Off Method........................................................................................62
MODEM Use IRQ .........................................................................................62
Soft-Off by PWRBTN....................................................................................62
Run VGABIOS if S3 Resume....................................................................63
AC Loss Auto Restart ..................................................................................63
WatchDog Run/Stop .................................................................................63
WatchDog Count Value ..........................................................................63
Wakeup Event Detect.....................................................................................64
PS2KB Wakeup Select ................................................................................64
PS2KB Wakeup Key Select .......................................................................64
PS2MS Wakeup Key Select ......................................................................64
PS2 Keyboard Power ON.........................................................................64
PS2 Mouse Power ON...............................................................................64
RTC Alarm Resume ......................................................................................65
Date (of Month)............................................................................................65
Resume Time (hh : mm : ss) ....................................................................65
PnP/PCI Configurations..................................................................................66
Init Display First..............................................................................................66
PNP OS Installed ...........................................................................................66
Reset Configuration Data.........................................................................66
Resources Controlled By...........................................................................67
PCI/VGA Palette Snoop ............................................................................67
Assign IRQ for VGA.....................................................................................67
Assign IRQ for USB ......................................................................................67
VIII
Maximum Payload Size..............................................................................67
IRQ Resources .....................................................................................................68
PC Health Status.................................................................................................69
Frequency/Voltage Control.........................................................................70
DRAM Frequency ........................................................................................70
DDR CAS Latency Control .......................................................................70
DDR Burst Length........................................................................................70
DDR 1T Command Rate ...........................................................................70
DRDY Table .....................................................................................................70
ODT.....................................................................................................................70
Spread Spectrum..........................................................................................71
Load Optimized Defaults...............................................................................72
Set Supervisor/User Password ....................................................................73
Save & Exit Setup ...............................................................................................74
Exit Without Saving ..........................................................................................75
IX
1
Overview
1
The VIA EPIA-M840 Mini-ITX Mainboard is a compact native x86
mainboard optimized for entry level systems in embedded and
productivity applications. It provides support for high fidelity audio
with its onboard VIA VT1708S High Definition Audio codec. In
addition it supports two SATA 3Gb/s storage devices as well as
IDE.
The EPIA-M840 is based on the VIA VX800 Unified Digital Media
IGP chipset featuring the VIA Chrome9™ HC3 with 2D/3D
graphics and video accelerators for rich digital media performance.
KEY COMPONENTS
VIA Nano™ NanoBGA2 CPU
The VIA Nano is a 64-bit superscalar processor in x86 platform
using a 65 nanometer process technology. It delivers an energyefficient, powerful performance, with cool and quiet operation all
within an ultra compact NanoBGA2 package measuring 21mm x
21mm. Perfectly fit for embedded system applications such as
industrial PCs, test machines, measuring equipment, digital
signage, medical PCs, monitoring systems, gaming machines, invehicle entertainment, and etc. The VIA Nano also boasts of
immersive multimedia performance, connectivity and computing
applications.
VIA VX800 System Processor
The VIA VX800 media system processor is an all-in-one, highly
integrated digital media IGP chipset featuring the latest video,
graphics and connectivity performance in a single chip measuring
just 33x33mm.
2
LAYOUT (TOP VIEW)
3
Item Description Page
1 DC-in power connector (DC12V1) 30
2 PS/2 keyboard and mouse pin header (KBMS) 24
3 ATX power supply connector (ATX_POWER1) 29
4 VIA Nano CPU (U16) 2
5 VIA VX800 chipset (U15) 2
6 CPU fan connector (CPUFAN1) 28
7 Memory slots (DIMM1, DIMM2) 26
8 LVDS connectors (LVDS1, LVDS2) 10
9 CMOS battery socket (BAT1) 30
10 System fan connector (SYSFAN1) 28
11 LVDS inverter connectors (INVERTER1, INVERTER2) 12
12 SATA connectors (SATA1, SATA2) 13
13 IDE connector (IDE1) 15
14 Front panel pin header (F_PANEL1) 25
15 SPDIF connector (SPDIF1) 24
16 MFX pin header (MFX1) 23
17 LPC pin header (LPC1) 21
18 SPI pin header (SPI1) 23
19 Digital I/O pin headers (DIO1, DIO2) 19
20 Front audio pin header (F_AUDIO1) 25
21 PCI Express x4 slot (PCIE1) 17
22 LPT pin header (LPT1) 20
23 Fast IR pin header (FIR1) 22
24 SATA power connectors (S_PWR1, S_PWR2) 14
25 USB pin header (USB_2/3) 17
26 COM pin headers (COM3, COM4, COM5, COM6, COM7,
COM8)
27 COM voltage selector for COM1 and COM2 (J1) 33
28 AT/ATX mode power selector (J2) 35
29 Clear CMOS jumper (CLEAR_CMOS1) 34
30 LVDS1 power selector (J3) 31
31 Inverter power selector for LVDS2 (IVDD2) 31
32 Panel power selector for LVDS2 (PVDD2) 31
33 SMBus pin header (SMBUS1) 22
34 Thermal sensor pin header (J5) 28
35 SATA DOM power selector (J7) 32
36 CF voltage selector (CF_SEL1) 32
37 IDE DOM power selector (J4) 33
38 COM voltage selector for COM3 and COM4 (J6) 33
39 COM voltage selector for COM5 and COM6 (J8) 33
40 COM voltage selector for COM7 and COM8 (J9) 33
18
Note:
Note:
Note:Note:
For the purposes of simplifying the illustration, the connectors
for both DC-in and standard versions have been included in the
diagram. However, actual products will only have one or the
other.
4
LAYOUT (I/O PANEL)
Item Description Page
1 PS/2 keyboard port 9
2 COM ports 9
3 Gigabit Ethernet ports 9
4 Line-in 3.5 mm TRS jack 9
5 Line-out 3.5 mm TRS jack 9
6 PS/2 mouse port 9
7 VGA port 9
8 USB 2.0 ports 9
9 Microphone 3.5 mm TRS jack 9
5
SPECIFICATIONS
Fan
Processor
Chipset
Super I/O
Memory
VGA
Storage
LAN
Audio
I/O
Expansion
Back Panel I/O
BIOS
Operating System
Fan
FanFan
VIA 1.3+GHz Nano processor
running at 1.6 GHz
Fanless
Fanless
FanlessFanless
VIA 1.2GHz Nano processor
running at 1.2 GHz
VIA VX800 Advanced all-in-one system processor
Fintek F81865-I
2 x DDR2 533/667 MHz DIMM slot*
(each slot can support a 2 GB module)
Integrated VIA Chrome9™ HC3 3D/2D graphics
1 x UDMA 133/100 40-pin connector
2 x SATA connectors with configurable pin 7
(GND/5V)
2 x SATA 3.5” HDD auxiliary power
(for DC-in SKU only)
1 x CF type 1
2 x VIA VT6130 PCIe Gigabit Ethernet controller
VIA VT1708S High Definition audio codec
1 x USB pin header (supports two USB ports)
2 x 2-channel 24-bit LVDS connectors
2 x Backlight control connectors
1 x front audio pin header
(Line-in/Mic-in or amplifier module)
1 x PS2 keyboard/mouse pin header
6 x RS232 pin header (configurable 5V/12V)
1 x LPT pin header
1 x LPC pin header
1 x SMBUS pin header
1 x S/PDIF Out connector
1 x SIR pin header
2 x Digital I/O pin header (GPI x 8, GPO x 8)
1 x front panel pin header
2 x Smart Fan connectors
1 x Temperature sensor pin header
1 x ATX power connector or
+12V DC-in (option)
1 x 4-lane PCIe slot
2 x PS/2 connectors (mouse and keyboard)
2 x RS232 COM port (configurable 5V/12V)
1 x VGA port
2 x RJ-45 LAN port
4 x USB ports
3 x Audio jacks (Line-out, Line-in, Mic-in)
Award BIOS
4/8Mbit SPI Flash ROM
Windows CE, XPe, XP, Linux
6
System Monitoring
Operating environment
Form Factor
Certifications
Compliance
*System resources require physical memory address locations above 3 GB that may reduce the total available
memory.
**Specifications are subject to change without notice.
- Wake-on-LAN, keyboard power-on, RTC timer,
Watch Dog timer
- System power management
- AC power failure recover
0°C ~ 60°C
0% ~ 95% (relative humidity; non-condensing)
Mini-ITX (17 cm x 17 cm)
CE/FCC
RoHS
7
2
Hardware
Installation
8
EXTERNAL I/O
The external I/O panel has the following ports:
PS/2 ports
There are two PS/2 ports: one for a keyboard, one for a mouse.
VGA port
The 15-pin VGA port is for connecting to analog displays.
COM ports
There are two 9-pin COM port is for pointing devices or other
serial devices.
Gigabit LAN ports
The mainboard provides two Gigabit Ethernet port controlled
through the VIA VT6130 PCIe Gigabit Ethernet controller.
USB ports
Four standard USB 2.0 ports are provided.
Audio ports
Three 3.5 mm TRS jacks enable connections to Line-out, Line-in,
and Mic-in.
9
ONBOARD CONNECTORS
LVDS panel connectors
The mainboard has two LVDS panel connectors: LVDS1 and
LVDS2.
10
LVDS1
Pin Signal Pin Signal
M1 GND
1 -LD2C0 2 PVDD1
3 +LD2C0 4 PVDD1
5 GND 6 GND
7 -LD2C1 8 GND
9 +LD2C1 10 -LD1C0
11 GND 12 +LD1C0
13 -LD2C2 14 GND
15 +LD2C2 16 -LD1C1
17 GND 18 +LD1C1
19 -LCLK2 20 GND
21 +LCLK2 22 -LD1C2
23 GND 24 +LD1C2
25 -LD2C3 26 GND
27 +LD2C3 28 -LCLK1
29 NC 30 +LCLK1
31 GND 32 GND
33 NC 34 -LD1C3
35 NC 36 +LD1C3
37 NC 38 DVP1_SPCLK
39 NC 40 DVP1_SPD
M2 GND
LVDS2
Pin Signal Pin Signal
M1 GND
1 -A4_L 2 PVDD2
3 A4_L 4 PVDD2
5 GND 6 GND
7 -A5_L 8 GND
9 A5_L 10 -A0_L
11 GND 12 A0_L
13 -A6_L 14 GND
15 A6_L 16 -A1_L
17 GND 18 A1_L
19 -CLK2_L 20 GND
21 CLK2_L 22 -A2_L
23 GND 24 A2_L
25 -A7_L 26 GND
27 A7_L 28 -CLK1_L
29 NC 30 CLK1_L
31 NC 32 GND
33 NC 34 -A3_L
35 NC 36 A3_L
37 NC 38 DISPCLKI0
39 NC 40 DISPCLKO0
M2 GND
11
Inverter connectors
The mainboard has two inverters for controlling the LVDS panel
backlight and brightness. INVERTER1 corresponds to the LVDS1
panel connector. INVERTER2 corresponds to the LVDS2 panel
connector.
INVERTER1
Pin Signal Pin Signal
1 IVDD1_CEN 1 IVDD2
2 IVDD1_CEN 2 IVDD2
3 BLON1 3 BAKLITE
4 VX800PWM_CTL 4 VX800PWM_CTL
5 BLON1 5 BAKLITE
6 BRIGHTNESS1_CTL 6 BRIGHTNESS_CTL
7 GND 7 GND
8 GND 8 GND
INVERTER2
12
SATA connectors
There are two onboard SATA connectors that support data
transfers speeds up to 3 Gbps. Both 2.5-inch and 3.5-inch SATA
drives can be supported. The standard mainboard version can
only support 2.5-inch SATA hard drives. The DC-in mainboard
version can only support 3.5-inch SATA hard drives.
SATA1
Pin Signal Pin Signal
G1 G1 G1 G1
1 GND 1 GND
2 STXP_1 2 STXP_2
3 STXN_1 3 STXN_2
4 GND 4 GND
5 SRXN_1 5 SRXN_2
6 SRXP_1 6 SRXP_2
7 GND 7 GND
G2 G2 G2 G2
SATA2
13
SATA power connectors
The DC-in SKU version of the mainboard provides two 3-pin SATA
power connectors. Each SATA power connector provides an
auxiliary 12V power supply to attached 3.5-inch SATA hard drives.
When connecting SATA power cables to the SATA power
connectors, make sure that the power plugs are inserted in the
proper orientation and the pins are properly aligned.
S_PWR1
Pin Signal Pin Signal
1 +5v 1 +5v
2 +12V 2 +12V
3 GND 3 GND
S_PWR2
Note:
Note:
Note:Note:
The SATA power connectors are only available with the DC-in
SKU.
14
IDE connector
The mainboard has one IDE connector that provides support for
up to two IDE devices.
Pin Signal Pin Signal
1 -IDE_RST 2 GND
3 PD_7 4 PD_8
5 PD_6 6 PD_9
7 PD_5 8 PD_10
9 PD_4 10 PD_11
11 PD_3 12 PD_12
13 PD_2 14 PD_13
15 PD_1 16 PD_14
17 PD_0 18 PD_15
19 GND 20 IDEV_SEL
21 PD_REQ 22 GND
23 -PD_IOW 24 GND
25 -PD_IOR 26 GND
27 PD_RDY 28 GND
29 -PD_ACK 30 GND
31 PD_IRQ15 32 NC
33 PD_A1 34 -LID
35 PD_A0 36 PD_A2
37 -PD_CS1 38 -PD_CS3
39 -HD_LED1 40 GND
15
Compact Flash slot
The onboard CompactFlash socket is located on the bottom side
of the mainboard. It is compatible with Type 1 and Type 2
CompactFlash cards.
16
PCIe slot
The onboard PCI Express slot supports one PCIe x4 expansion card.
USB pin header
The onboard USB pin header enables the addition of two more
USB 2.0 ports.
Pin Signal Pin Signal
1 VUSB4 2 VUSB4
3 USBD_T2- 4 USBD_T35 USBD_T2+ 6 USBD_T3+
7 GND 8 GND
9 — 10 GND
17
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