DFI BT253 User manual

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BT253
Embedded SBC 4”
User’s Manual
A33350736

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Copyright
This publication contains information that is protected by copyright. No part of it may be re-
produced in any form or by any means or used to make any transformation/adaptation without
the prior written permission from the copyright holders.
This publication is provided for informational purposes only. The manufacturer makes no
representations or warranties with respect to the contents or use of this manual and specifi-
cally disclaims any express or implied warranties of merchantability or fitness for any particular
purpose. The user will assume the entire risk of the use or the results of the use of this docu-
ment. Further, the manufacturer reserves the right to revise this publication and make changes
to its contents at any time, without obligation to notify any person or entity of such revisions
or changes.
Changes after the publication’s first release will be based on the product’s revision. The website
will always provide the most updated information.
© 2017. All Rights Reserved.
Trademarks
Product names or trademarks appearing in this manual are for identification purpose only and
are the properties of the respective owners.
FCC and DOC Statement on Class B
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 reason-
able protection against harmful interference when the equipment is operated in a residential
installation. 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. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is encour-
aged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected.
• Consult the dealer or an experienced radio TV technician for help.
Notice:
1. The changes or modifications not expressly approved by the party responsible for compli-
ance could void the user’s authority to operate the equipment.
2. Shielded interface cables must be used in order to comply with the emission limits.

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Copyright............................................................................................................. 2
Trademarks ........................................................................................................2
FCC and DOC Statement on Class B.....................................................2
About this Manual ..........................................................................................4
Warranty ............................................................................................................4
Static Electricity Precautions......................................................................4
Safety Measures ..............................................................................................4
About the Package.........................................................................................5
Chapter 1 - Introduction .............................................................................6
Specifications ................................................................................................6
Features ........................................................................................................7
Chapter 2 - Hardware Installation................................................9
Board Layout................................................................................................. 9
Block Diagram............................................................................................. 10
Mechanical Diagram.................................................................................. 10
System Memory.......................................................................................... 11
Jumper Settings ......................................................................................... 12
Clear CMOS Data........................................................................................ 12
Auto Power-on Select.................................................................................. 12
USB Power Select ....................................................................................... 13
Panel Power Select ..................................................................................... 13
Backlight Enable Power Select..................................................................... 14
Dimming Mode Select ................................................................................. 14
Digital I/O Power Select.............................................................................. 15
Digital I/O Output State.............................................................................. 15
LCD/Inverter Power Select .......................................................................... 16
COM 4/DIO Select ...................................................................................... 16
Front Panel I/O Ports................................................................................ 17
Rear Panel I/O Ports................................................................................. 17
USB Ports................................................................................................... 18
COM (Serial) Ports...................................................................................... 19
Graphics Interfaces..................................................................................... 20
16~24V DC-in ............................................................................................ 21
RJ45 LAN Ports........................................................................................... 21
I/O Connectors ........................................................................................... 22
Serial ATA Connector .................................................................................. 22
Serial ATA Power Connector ........................................................................ 22
Cooling Fan Connector................................................................................ 22
LVDS LCD Panel with Power Connector........................................................ 23
Mic-in Connector......................................................................................... 24
Chassis Intrusion Connector ........................................................................ 24
Expansion Slots .......................................................................................... 25
Standby Power LED .................................................................................... 25
Battery....................................................................................................... 26
Chapter 3 - BIOS Setup................................................................27
Overview ..................................................................................................... 27
AMI BIOS Setup Utility............................................................................. 28
Main .......................................................................................................... 28
Advanced ................................................................................................... 28
Chipset ...................................................................................................... 38
Security...................................................................................................... 42
Boot........................................................................................................... 43
Save & Exit ................................................................................................ 43
Updating the BIOS .................................................................................... 44
Notice: BIOS SPI ROM ............................................................................. 44
Chapter 4 - Supported Software........................................................... 45
Chapter 5 - Digital I/O Programming Guide.................................... 57
Appendix A - Watchdog Sample Code................................................ 59
Appendix B - System Error Message................................................... 60
Appendix C - Troubleshooting ................................................................ 61
Table of Contents

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About this Manual
An electronic file of this manual is included in the CD. To view the user’s manual in the CD, in-
sert the CD into a CD-ROM drive. The autorun screen (Main Board Utility CD) will appear. Click
“User’s Manual” on the main menu.
Warranty
1. Warranty does not cover damages or failures that arised from misuse of the product, in-
ability to use the product, unauthorized replacement or alteration of components and prod-
uct specifications.
2. The warranty is void if the product has been subjected to physical abuse, improper instal-
lation, modification, accidents or unauthorized repair of the product.
3. Unless otherwise instructed in this user’s manual, the user may not, under any circum-
stances, attempt to perform service, adjustments or repairs on the product, whether in or
out of warranty. It must be returned to the purchase point, factory or authorized service
agency for all such work.
4. We will not be liable for any indirect, special, incidental or consequencial damages to the
product that has been modified or altered.
Static Electricity Precautions
It is quite easy to inadvertently damage your PC, system board, components or devices even
before installing them in your system unit. Static electrical discharge can damage computer
components without causing any signs of physical damage. You must take extra care in han-
dling them to ensure against electrostatic build-up.
1. To prevent electrostatic build-up, leave the system board in its anti-static bag until you are
ready to install it.
2. Wear an antistatic wrist strap.
3. Do all preparation work on a static-free surface.
4. Hold the device only by its edges. Be careful not to touch any of the components, contacts
or connections.
5. Avoid touching the pins or contacts on all modules and connectors. Hold modules or con-
nectors by their ends.
Safety Measures
To avoid damage to the system:
• Use the correct AC input voltage range.
To reduce the risk of electric shock:
• Unplug the power cord before removing the system chassis cover for installation or servic-
ing. After installation or servicing, cover the system chassis before plugging the power
cord.
Important:
Electrostatic discharge (ESD) can damage your processor, disk drive and other com-
ponents. Perform the upgrade instruction procedures described at an ESD worksta-
tion only. If such a station is not available, you can provide some ESD protection by
wearing an antistatic wrist strap and attaching it to a metal part of the system chas-
sis. If a wrist strap is unavailable, establish and maintain contact with the system
chassis throughout any procedures requiring ESD protection.

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About the Package
The package contains the following items. If any of these items are missing or damaged,
please contact your dealer or sales representative for assistance.
• One BT253 board
• One Serial ATA data with power cable
• One DVD
• One QR (Quick Reference)
• One Heat spreader
Optional Items
• USB port cable
• COM port cable
• Power adapter (120W, 19V)
The board and accessories in the package may not come similar to the information listed
above. This may differ in accordance to the sales region or models in which it was sold. For
more information about the standard package in your region, please contact your dealer or
sales representative.
Before Using the System Board
Before using the system board, prepare basic system components.
If you are installing the system board in a new system, you will need at least the following
internal components.
• Storage devices such as hard disk drive, CD-ROM, etc.
You will also need external system peripherals you intend to use which will normally include at
least a keyboard, a mouse and a video display monitor.

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Rear Panel I/O
Ports • 1 16~24V DC-in jack
• 1 DB-9 serial port
- supports RS232/422/485
• 1 VGA port; or 1 DVI-I port* (optional)
• 2 RJ45 LAN ports
• 4 USB 2.0 ports (default); or
3 USB 2.0 ports and 1 line-out jack* (optional)
I/O Connectors • 1 connector for 1 external USB 2.0 port
• 2 connectors for 2 external RS232 serial ports (2.0mm pitch)
• 1 LVDS LCD panel with power connector
• 1 mic-in connector
• 1 Serial ATA connector
• 1 Serial ATA power connector
• 1 chassis intrusion connector
• 1 fan connector
BIOS • AMI BIOS
- 64Mbit SPI BIOS
Watchdog
Timer • Watchdog timeout programmable via software from 1 to 255 seconds
Energy Efficient
Design • Supports ACPI
• System Power Management
• Wake-On-Events include:
- Wake-On-USB KB/Mouse* (optional)
- Wake-On-LAN
- RTC timer to power-on the system
• AC power failure recovery
Damage Free
Intelligence • Monitors CPU/system temperature and overheat alarm
• Monitors VCORE/12V/5V/DDR voltages and failure alarm
• Monitors CPU/system fan speed and failure alarm
• Read back capability that displays temperature, voltage and fan speed
Power
Consumption • BT253-C4-E45: 18.12W with E3845 at 1.91GHz and 4GB DDR3L ECC memory
down
OS Support • Windows 7 Ultimate x86 & SP1 (32-bit)
• Windows 7 Ultimate x64 & SP1 (64-bit)
• Windows 8.1 Enterprise x86 (32-bit)
• Windows 8.1 Enterprise x64 (64-bit)
Temperature • Operating
: 0oC to 60oC - Atom, Celeron (Fanless)
: 0oC to 85OC - Celeron (Fanless)
: -20oC to 85oC - Atom (Fanless)
• Storage: -40oC to 85oC
Chapter 1 - Introduction
Specifications
Processor • Intel®AtomTM/Intel®Celeron®processors
- Intel®AtomTM E3845, Quad Core, 2M Cache, 1.91GHz, 10W
- Intel®Celeron®N2807, Dual Core, 1M Cache, 1.58GHz (2.16GHz), 4.3W
- Intel®Celeron®J1900, Quad Core, 2M Cache, 2GHz (2.41GHz), 10W
- Intel®AtomTM E3825, Dual Core, 1M Cache, 1.33GHz, 6W
• BGA 1170 packaging technology
• 22nm process technology
System Memory • 2GB/4GB DDR3L ECC memory down (-E45/-E25)
2GB/4GB DDR3L memory down (-J00/-N07)
• Supports DDR3L 1333MHz (-E45/-J00/-N07)
Supports DDR3L 1066MHz (-E25)
• Supports single channel memory interface
Expansion
Slots • 3 Mini PCIe slots
- 1 full size supports USB, PCIe and 3G signals
- 1 full size supports mSATA
- 1 half size supports USB, PCIe and LPC signals
• 1 SIM socket
• 1 microSD socket* (optional)
Graphics • Intel®HD Graphics
• Display ports: 1 LVDS, 1 HDMI, 1 VGA (default); or 1 DVI-I* (optional)
• LVDS: NXP PTN3460, 24-bit, dual channel, resolution up to 1920x1200 @60Hz
• HDMI, DVI: resolution up to 1920x1080 @60Hz
• VGA: 24-bit, resolution up to 1920x1200 @60Hz
• Supports hardware acceleration for DirectX 11, OCL 1.2, OGL 4.0, H.264,
MPEG2, MVC, VC-1, WMV9 and VP8 (supported version dependent on OS)
Audio • Realtek ALC888 5.1-channel High Definition Audio
LAN • 2 Intel®I210 PCI Express Gigabit Ethernet controllers
• Integrated 10/100/1000 transceiver
• Fully compliant with IEEE 802.3, IEEE 802.3u, IEEE 802.3ab
Serial ATA • 1 SATA 2.0 port with data transfer rate up to 3Gb/s
• Integrated Advanced Host Controller Interface (AHCI) controller
eMMC*
(optional) • Supports 4GB, 8GB, 16GB and 32GB eMMC onboard
• Supports Windows 8.1 only
Trusted
Platform
Module - TPM*
(optional)
• Provides a Trusted PC for secure transactions
• Provides software license protection, enforcement and password protection
Front Panel I/O
Ports • 1 power button
• 1 reset button
• 3 DB-9 serial ports
- supports RS232/422/485
- One of the ports supports an optional 8-bit DIO
• 1 USB 3.0 port
• 1 HDMI port
Chapter 1
Chapter 1 Introduction www.dfi.com

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Chapter 1
Chapter 1 Introduction www.dfi.com
Features
• Watchdog Timer
The Watchdog Timer function allows your application to regularly “clear” the system at the set
time interval. If the system hangs or fails to function, it will reset at the set time interval so
that your system will continue to operate.
• DDR3L
DDR3L is a higher performance DDR3 SDRAM interface providing less voltage and higher
speed successor. DDR3L SDRAM modules support 1066/1333MHz for DDR modules. DDR3L de-
livers increased system bandwidth and improved performance to provide its higher bandwidth
and its increase in performance at a lower power.
• Graphics
The integrated Intel®HD graphics engine delivers an excellent blend of graphics performance
and features to meet business needs. It provides excellent video and 3D graphics with out-
standing graphics responsiveness. These enhancements deliver the performance and compat-
ibility needed for today’s and tomorrow’s business applications. Supports 1 LVDS, 1 HDMI and
1 VGA (default); or 1 DVI-I (optional) interface for display outputs.
• Serial ATA
Serial ATA is a storage interface that is compliant with SATA 1.0a specification. With speed of
up to 3Gb/s (SATA 2.0), it improves hard drive performance faster than the standard parallel
ATA whose data transfer rate is 100MB/s.
• Gigabit LAN
Two Intel® I210 Gigabit LAN controllers support up to 1Gbps data transmission.
• Audio
The Realtek ALC888 audio codec provides 5.1-channel High Definition audio output.
• Power Failure Recovery
When power returns after an AC power failure, you may choose to either power-on the system
manually or let the system power-on automatically.
• USB
The system board supports the new USB 3.0. It is capable of running at a maximum transmis-
sion speed of up to 5 Gbit/s (625 MB/s) and is faster than USB 2.0 (480 Mbit/s, or 60 MB/s)
and USB 1.1 (12Mb/s). USB 3.0 reduces the time required for data transmission, reduces
power consumption, and is backward compatible with USB 2.0. It is a marked improvement
in device transfer speeds between your computer and a wide range of simultaneously
accessible external Plug and Play peripherals.
Humidity • 5% to 90%
Dimensions • 4" board
• 165mm (6.49") x 115mm (4.53")
Note:
*Optional and is not supported in standard model. Please contact your sales represen-
tative for more information.

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Chapter 1
Important:
The 5V_standby power source of your power supply must support ≥720mA.
• Wake-On-USB (optional)
This function allows you to use a USB keyboard or USB mouse to wake up a system from the
S3 (STR - Suspend To RAM) state.
• ACPI STR
The system board is designed to meet the ACPI (Advanced Configuration and Power Interface)
specification. ACPI has energy saving features that enables PCs to implement Power Manage-
ment and Plug-and-Play with operating systems that support OS Direct Power Management.
ACPI when enabled in the Power Management Setup will allow you to use the Suspend to RAM
function.
With the Suspend to RAM function enabled, you can power-off the system at once by pressing
the power button or selecting “Standby” when you shut down Windows® without having to
go through the sometimes tiresome process of closing files, applications and operating system.
This is because the system is capable of storing all programs and data files during the entire
operating session into RAM (Random Access Memory) when it powers-off. The operating ses-
sion will resume exactly where you left off the next time you power-on the system.
Important:
If you are using the Wake-On-USB Keyboard/Mouse function for 2 USB ports, the
5V_standby power source of your power supply must support ≥1.5A. For 3 or more
USB ports, the 5V_standby power source of your power supply must support ≥2A.
• Wake-On-LAN
This feature allows the network to remotely wake up a Soft Power Down (Soft-Off) PC. It is
supported via the onboard LAN port or via a PCI LAN card that uses the PCI PME (Power Man-
agement Event) signal. However, if your system is in the Suspend mode, you can power-on
the system only through an IRQ or DMA interrupt.
Important:
The 5V_standby power source of your power supply must support ≥720mA.
• RTC Timer
The RTC installed on the system board allows your system to automatically power-on on the
set date and time.

www.dfi.com
9
Chapter 2 Hardware Installation
Chapter 2
Chapter 2 - Hardware Installation
Board Layout
Top View Bottom View
SATA 1
14 SATA
Power
LAN 1
LAN 2
3
DDR3L DDR3L DDR3L DDR3L
Mini PCIe
COM 4
1210
31
JP22 1
1
1
(JP20)
(JP18)
(JP17)
(JP21)
13
1210
COM 2
COM 1 USB 0
USB 3.0
HDMI
Reset
Power
3940
21
LVDS LCD
Panel
DC-in
USB 2
USB 7
USB 1
USB 6
COM 3
Mic-in
1
Battery
Buzzer
1
Chassis
Intrusion
1
Clear CMOS
Data (JP24)
SPI
Flash
BIOS
eMMC
(optional)
iTE
IT8528E
Mini PCIe mSATA
MicroSD
(optional)
1
System Fan
1
USB 0
Power
Select
(JP5)
1
2
5
6
(JP23)
1
1
1(JP3)
(JP4)
1
210
9
COM 6
1
10
9
COM 5
1 1
USB 1-2
Power Select (JP6)
USB 5-7 Power
Select (JP7)
1
210
9
USB 5
(JP25)
USB 2.0
USB 2.0
(JP17)
(JP20)
COM 4/DIO Select (JP22, JP21)
Digital I/O 0-3 Output State
Digital I/O Power Select
Panel Power Select
(JP3)
(JP4)
(JP23)
Backlight Enable Power Select
Auto Power-on Select (JP25)
Dimming Mode Select
1
(JP18)
Digital I/O 4-7 Output State
1
VGA/DVI-I
4
1(JP2)
(JP2)LCD/Inverter Power Select
SATA 2.0
DDR3L DDR3L DDR3L DDR3L DDR3L
Intel Atom
E3800 Series
Intel
WGI210AT
Nuvoton
NCT6106D
ASMedia
ASM1442
Intel
WGI210AT SMSC
USB4604
SIM Card
NXP
PTN3460
Standby
Power LED

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10
Chapter 2 Hardware Installation
Chapter 2
Block Diagram Mechanical Diagram
Atom
E3800
Series/
Celeron
COM 6x
H/W Monitor Super IO
with WDT
Digital I/O
8-bit (Opt.)
2GB/4GB DDR3L
memory down
DDR3L
1066/1333MHz
GLAN I210AT
GLAN I210AT
PCIe x1
PCIe x1
USB 1x
USB 3.0
USB 3x USB 2.0
Mini PCIe
LPC
PCIe x1
USB 2.0 (HSIC)
SATA 2.0
LPC Bus
TPM (Opt.)
HD Audio
eDP to LVDS
DDI
LVDS
USB4604 USB HSIC
USB 2x
USB 2.0
USB 2.0
SATA 1x
VGA
DDI
DVI-I
(Opt.)
HDMI
SATA mSATA
eMMC eMMC (Opt.)
Mini PCIe
PCIe x1
USB 2.0 (HSIC)
0
0
6.1
14.9
28.4
70.4
106.41
142.4
160
165
5
160 147.4
108.4
21.81
38.31
51.4 59.9
68.4 76.9
90.4
144.9
5
90.4
144.9
21.8
9.65
97
107
115
11.8
19.8
103.35
99.26
102.93
113.4
11.45
1.6
105.85