DFI BT968 User manual

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BT968
COM Express Compact Module
User’s Manual
A30650952

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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.
© 2018. 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.
COM Express Specification Reference
PICMG®COM Express ModuleTM Base Specification.
http://www.picmg.org/
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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Table of Contents
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 - Concept.......................................................................8
COM Express Module Standards..............................................................8
Specification Comparison Table...............................................................9
Chapter 3 - Hardware Installation...............................................10
Board Layout...............................................................................................10
Block Diagram.............................................................................................10
Mechanical Diagram..................................................................................11
System Memory..........................................................................................12
Installing the DIMM Module.......................................................................13
Connectors...................................................................................................14
CPU Fan Connector....................................................................................14
COM Express Connectors...........................................................................14
COM Express Connectors Signal Discription.................................................17
Standby Power LED...................................................................................25
Cooling Option............................................................................................25
Installing BT968 onto a Carrier Board.................................................26
Installing the COM Express Debug Card.............................................29
Chapter 4 - BIOS Setup............................................................... 32
Overview.......................................................................................................32
AMI BIOS Setup Utility.............................................................................33
Main.........................................................................................................33
Advanced..................................................................................................33
Chipset.....................................................................................................40
Security ....................................................................................................45
Boot .........................................................................................................45
Save & Exit...............................................................................................46
Updating the BIOS....................................................................................46
Notice: BIOS SPI ROM.............................................................................47
Chapter 5 - Supported Software...........................................................48
Chapter 6 - GPIO Programming Guide...............................................61
Appendix A - nLite and AHCI Installation Guide...........................62
nLite...............................................................................................................62
AHCI..............................................................................................................66
Appendix B - Watchdog Sample Code................................................68
Appendix C - System Error Message...................................................69
Appendix D - Troubleshooting................................................................70

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About this Manual
This manual can be downloaded from the website, or acquired as an electronic file included in
the optional CD/DVD. The manual is subject to change and update without notice, and may be
based on editions that do not resemble your actual products. Please visit our website or con-
tact our sales representatives for the latest editions.
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 BT968 board
• One Heat spreader
Optional Items
• COM331-B carrier board kit
• Heat sink
• Heat spreader with heat sink and fan
The board and accessories in the package may not come similar to the information listed
above. This may differ in accordance with 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, DVD-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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Chapter 1 - Introduction
Specifications
Chapter 1
Processor • Intel Atom®/Intel®Celeron®processors
- N30: Intel®Celeron®N2930, Quad Core, 2M Cache, 1.83 GHz (2.16GHz), 7.5W
- J00: Intel®Celeron®J1900, Quad Core, 2M Cache, 2GHz (2.41GHz), 10W
- E15: Intel Atom®E3815, Single Core, 0.5M Cache, 1.46GHz, 5W
- E27: Intel Atom®E3827, Dual Core, 1M Cache, 1.75GHz, 8W
- E45: Intel Atom®E3845, Quad Core, 2M Cache, 1.91GHz, 10W
- E26: Intel Atom®E3826, Dual Core, 1M Cache, 1.46GHz, 7W
• BGA 1170 packaging technology
• 22nm process technology
System
Memory • Two 204-pin DDR3L SODIMM sockets (-E45/-E27/-E26/-J00/-N30)
- Supports up to 8GB system memory
- dual channel memory interface
One 204-pin DDR3L SODIMM socket (-E15)
- Supports up to 4GB system memory
- single channel memory interface
• Supports DDR3L 1333MHz (-E45/-E27/-J00/-N30)
Supports DDR3L 1066MHz (-E26/-E15)
• DRAM device technologies: 1Gb, 2Gb and 4Gb DDR3L DRAM
technologies are supported for x8 and x16 devices, unbuffered, non-ECC
Graphics • Intel®HD Graphics
• Supports VGA, DDI, LVDS (default) or DDI* interfaces
• Supports 2 display interfaces at the same time
• VGA: 24-bit, resolution up to 1920x1200 @60Hz
• LVDS: NXP PTN3460, 24-bit, dual channel, resolution up to 1920x1200 @60Hz
• Digital Display Interface: HDMI, DVI and DP
• HDMI, DVI: resolution up to 1920x1080 @60Hz
• DP: resolution up to 2560x1600 @ 60Hz
• Supports hardware acceleration for DirectX 11, OCL 1.2, OGL 3.2, H.264,
MPEG2, MVC, VC-1, WMV9 and VP8
Audio • Supports High Definition Audio interface
LAN • Intel®I210AT Gigabit Ethernet Controller
• Integrated 10/100/1000 transceiver
• Fully compliant with IEEE 802.3, IEEE 802.3u, IEEE 802.3ab
Serial ATA • Supports 2 Serial ATA interfaces
• SATA 2.0 with data transfer rate up to 3Gb/s
• Integrated Advanced Host Controller Interface (AHCI) controller
Expansion
Interfaces • Supports 1 USB 3.0 interface
• Supports 8 USB 2.0 interfaces
- 4 integrated USB 2.0 interfaces
- 1 USB HSIC for 4 USB 2.0 interfaces
• Supports 3 PCIe x1 (default); or 1 PCIe x4 (PCIe port 3, by default, is shared
with the onboard LAN)*
• Supports LPC interface
• Supports I2C interface
• Supports SMBus interface
• Suppotrs 2 serial interfaces (TX/RX)
• Supports 8-bit Digital I/O
eMMC* • Supports 4GB, 8GB, 16GB and 32GB eMMC onboard
• Supports Windows 8.1 only
Trusted
Platform
Module (TPM)*
• Provides a Trusted PC for secure transactions
• Provides software license protection, enforcement and password protection
Damage Free
Intelligence • Monitors CPU temperature
• Monitors Vcore/Vgfx/VDDR/1V0/VBAT voltages
• Monitors CPU/system fan speed
• Watchdog timer function
BIOS • AMI BIOS
- 64Mbit SPI BIOS
Watchdog
Timer • Watchdog timeout programmable via software from 1 to 255 seconds
Power
Consumption • BT968-TS0-E45: 15.88W with E3845 at 1.91GHz and 2x 4GB DDR3L SODIMM
OS Support • Windows 7 Ultimate x86 & SP1 (32-bit)
• Windows 7 Ultimate x64 & SP1 (64-bit)
• Windows 8 Enterprise x86 (32-bit)
• Windows 8 Enterprise x64 (64-bit)
• Windows 8.1 Enterprise x86 (32-bit)
• Windows 8.1 Enterprise x64 (64-bit)
• Windows 10 Enterprise x86 (32-bit)
• Windows 10 Enterprise x64 (64-bit)
Temperature • Operating
: 0oC to 60oC - Atom, Celeron (Fanless)
: -20oC to 70oC - Atom (Fanless with air flow)
: -40oC to 85oC - Atom (Fanless with air flow)
• Storage: -40oC to 85oC
Humidity • 5% to 90%
MTBF • 777,906 hrs @ 25°C; 394,833 hrs @ 45°C
• Calculation model: Telcordia Issue 2, Method I Case 3
• Environment: GB, GC – Ground Benign, Controlled
Power Input • 12V, 5VSB, VCC_RTC (ATX mode)
12V, VCC_RTC (AT mode)
PCB • Dimensions
- COM Express®Compact
- 95mm (3.74") x 95mm (3.74")
• Compliance
- PICMG COM Express®R2.1, Type 6
Certification • CE, FCC Class B, RoHS
Note:
*Optional and is not supported in standard model. Please contact your sales represen-
tative for more information.

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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 VGA, DDI, LVDS
(default) or DDI (optional) interfaces for up to 2 display outputs at the same time.
• 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
The Intel®WGI210AT Gigabit LAN controller supports up to 1Gbps data transmission.
• 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.
Chapter 1

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Chapter 2
Chapter 2 - Concept
COM Express Module Standards
The figure below indicates the dimensions of the different types of COM Express modules.
BT968 is a COM Express Compact. The dimension is 95mm x 95mm.
106.00
91.00
70.00
51.00
4.00
18.00
6.00
0.00
16.50 4.00 0.00
Extended
BasicCompact
Mini
74.20 80.00 91.00 121.00 151.00
Common for all Form Factors
Extended only
Basic only
Compact only
Compact and Basic only
Mini only

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Chapter 2
Specification Comparison Table
The table below shows the COM Express standard specifications and the corresponding specifications supported on the BT968 module.
Note:
• 5 Indicates 12V-tolerant features on former VCC_12V signals.
• 6 Cells in the connected columns spanning rows provide a rough approximation of
features sharing connector pins.
Connector Feature
COM Express Module Base
Specification Type 6
(No IDE or PCI, add DDI+ USB3)
Min
/
Max
DFI BT968
Type 6
A-B
A-B PCI Ex
p
ress Lanes 0 - 5 1 / 6 3
(
4 for BOM O
p
t.
)
A-B LVDS Channel
A
0 / 1 1
A-B LVDS Channel B 0 / 1 1
A-B eDP on LVDS CH A
p
ins 0 / 1 0
A-B VGA Port 0 / 1 1
A-B
T
V-Out N
A
N
A
A-B DDI 0 N
A
N
A
A-B5Serial Ports 1 - 2 0 / 2 2
A-B CAN interface on SER1 0 / 1 0
A-B SATA / SAS Ports 1 / 4 2
A-B AC’97 / HDA Di
g
ital Interface 0 / 1 1
A-B USB 2.0 Ports 4 / 8 8
A-B USB Clien
t
0 / 1 0
A-B USB 3.0 Ports N
A
N
A
A-B LAN Port 0 1 / 1 1
A-B Ex
p
ress Card Su
pp
ort 1 / 2 2
A-B LPC Bus 1 / 1 1
A-B SPI 1 / 2 1
A-B SDIO
(
muxed on GPIO
)
0 / 1 0
General Pur
p
ose I/O 8 / 8 8
A-B SMBus 1 / 1 1
A-B I2C 1 / 1 1
A-B Watchdo
g
Timer 0 / 1 1
A-B S
p
eaker Ou
t
1 / 1 1
A-B External BIOS ROM Su
pp
or
t
0 / 2 1
A-B Reset Functions 1 / 1 1
A-B6
System I/O
System Management
Connector Feature
COM Express Module Base
Specification Type 6
(No IDE or PCI, add DDI+ USB3)
Min
/
Max
DFI BT968
Type 6
A-B
A-B Thermal Protection 0 / 1 1
A-B Battery Low Alarm 0 / 1 1
A-B Suspend/Wake Signals 0 / 3 3
A-B Power Button Support 1 / 1 1
A-B Power Good 1 / 1 1
A-B VCC_5V_SBY Contacts 4 / 4 4
A-B5Sleep Input 0 / 1 1
A-B5Lid Input 0 / 1 1
A-B5Fan Control Signals 0 / 2 2
A-B Trusted Platform Modules 0 / 1 1
A-B
A-B VCC_12V Contacts 12 / 12 12
Power Management
Power
Connector Feature
COM Express Module Base
Specification Type 6
(No IDE or PCI, add DDI+ USB3)
Min
/
Max
DFI BT968
Type 6
C-D PCI Express Lanes 16 - 31 0 / 16 0
PCI Express Graphics (PEG) 0 / 1 0
Muxed SDVO Channels 1 - 2 NA N
A
PCI Express Lanes 6 - 15 0 / 2 0
PCI Bus - 32 Bit NA N
A
PATA Port NA N
A
LAN Ports 1 - 2 NA N
A
DDIs 1 - 3 0 / 3 1+1 (DDI 2 BOM
option with onboard
LVDS)
USB 3.0 Ports 0 / 4 1
C-D
C-D VCC_12V Contacts 12 / 12 12
System I/O
Power
C-D6
C-D6
Module Pin-out - Required and Optional Features C-D Connector. PICMG®COM.0Revision 2.1

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Chapter 3
Chapter 3 - Hardware Installation
Board Layout
Top View
Bottom View
Block Diagram
DDR3L_1 SODIMM
Intel
BGA 1170
ITE
IT8528E
1
CPU Fan
SPI Flash BIOS
Intel I210AT
NXP PTN3460
eMMC
(optional)
SMSC USB4604
Standby Power LED
DDR3L_2 SODIMM
COM Express connector
C1
D1
C110
D110
B1
B110
A1
A110
COM Express connector
DDI Port1
(to BTB DDI Port 2)
(co-lay with PTN3460)
EEPROM
USB 2.0 4x
SATA 2.0 2x
USB 3.0 Port 1
A / B
SATA
2
.
0
2x
SMBus Atom E3800 Series
/Celeron
USB
3.0
Port
1
eMMC
(Optional)
eMMC
Intel®GLAN
I210AT
PCIe GEN2 (3 x1 or 1 x4)
LAN
SPI Flash
SPI Bus
1
1
)
)
C / D
LVDS Ports (Dual Channel)
DDI Port 0 (to BTB DDI Port1)
DDR3L Memory
Slot 2x
DDR3
1066/1333MHz
Dual Channel
PCIe x1
VGA
VGA
PCIe x
PCIe
GEN
2 (3
x1
or
1
x4)
USB4604
USB 2.0 4x USB HSIC
HD Audio
LPC Bus
HD
A
udio
LPC
Bus
8-bit DIO
WDT
I2C Bus
TPM 1.2
SLB9635
(optional)
Serial Port 0,1
Fan PWM/
TACH_IN
IMVP7
SLP/LID
WDT
SLP/LID
TCA6408A
USB
2
.
0
4x
DDI
Port 1
(t BTB D
1:2 DP S/W
PI3VDP612A
Default eDP (DDI) Port
eDP to LVDS
(PTN3460)
(
Embedded
Controller
IT8528
SLP/LID
EEPROM
EEPROM
SMBus
-bit DIO
8
-
SMBus
DIO
TCA6408A
C
60
8