Advantech SOM-6894 User manual

User Manual
SOM-6894

SOM-6894 User Manual ii
Copyright
The documentation and the software included with this product are copyrighted 2013
by Advantech Co., Ltd. All rights are reserved. Advantech Co., Ltd. reserves the right
to make improvements in the products described in this manual at any time without
notice. No part of this manual may be reproduced, copied, translated or transmitted
in any form or by any means without the prior written permission of Advantech Co.,
Ltd. Information provided in this manual is intended to be accurate and reliable. How-
ever, Advantech Co., Ltd. assumes no responsibility for its use, nor for any infringe-
ments of the rights of third parties, which may result from its use.
Acknowledgements
Intel is a trademark of Intel Corporation.
Microsoft Windows and MS-DOS are registered trademarks of Microsoft Corp.
All other product names or trademarks are properties of their respective owners.
Product Warranty (2 years)
Advantech warrants to you, the original purchaser, that each of its products will be
free from defects in materials and workmanship for two years from the date of pur-
chase.
This warranty does not apply to any products which have been repaired or altered by
persons other than repair personnel authorized by Advantech, or which have been
subject to misuse, abuse, accident or improper installation. Advantech assumes no
liability under the terms of this warranty as a consequence of such events.
Because of Advantech’s high quality-control standards and rigorous testing, most of
our customers never need to use our repair service. If an Advantech product is defec-
tive, it will be repaired or replaced at no charge during the warranty period. For out-
of-warranty repairs, you will be billed according to the cost of replacement materials,
service time and freight. Please consult your dealer for more details.
If you think you have a defective product, follow these steps:
1. Collect all the information about the problem encountered. (For example, CPU
speed, Advantech products used, other hardware and software used, etc.) Note
anything abnormal and list any onscreen messages you get when the problem
occurs.
2. Call your dealer and describe the problem. Please have your manual, product,
and any helpful information readily available.
3. If your product is diagnosed as defective, obtain an RMA (return merchandize
authorization) number from your dealer. This allows us to process your return
more quickly.
4. Carefully pack the defective product, a fully-completed Repair and Replacement
Order Card and a photocopy proof of purchase date (such as your sales receipt)
in a shippable container. A product returned without proof of the purchase date
is not eligible for warranty service.
5. Write the RMA number visibly on the outside of the package and ship it prepaid
to your dealer.
Part No. 2006689400 Edition 1
Printed in Taiwan January 2014

iii SOM-6894 User Manual
Declaration of Conformity
CE
This product has passed the CE test for environmental specifications. Test conditions
for passing included the equipment being operated within an industrial enclosure. In
order to protect the product from being damaged by ESD (Electrostatic Discharge)
and EMI leakage, we strongly recommend the use of CE-compliant industrial enclo-
sure products.
FCC Class B
Note: 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 reasonable protection against harmful interference in a residential installa-
tion. This equipment generates, uses and can radiate radio frequency energy and, if
not installed and used in accordance with the instructions, may cause harmful inter-
ference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause harmful interfer-
ence to radio or television reception, which can be determined by turning the equip-
ment off and on, the user is encouraged 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 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.
FM
This equipment has passed the FM certification. According to the National Fire Pro-
tection Association, work sites are classified into different classes, divisions and
groups, based on hazard considerations. This equipment is compliant with the speci-
fications of Class I, Division 2, Groups A, B, C and D indoor hazards.
Technical Support and Assistance
1. Visit the Advantech website at http://support.advantech.com where you can find
the latest information about the product.
2. Contact your distributor, sales representative, or Advantech's customer service
center for technical support if you need additional assistance. Please have the
following information ready before you call:
–Product name and serial number
–Description of your peripheral attachments
–Description of your software (operating system, version, application software,
etc.)
–A complete description of the problem
–The exact wording of any error messages

SOM-6894 User Manual iv
Warnings, Cautions and Notes
Document Feedback
To assist us in making improvements to this manual, we would welcome comments
and constructive criticism. Please send all such - in writing to: support@advan-
tech.com
Packing List
Before setting up the system, check that the items listed below are included and in
good condition. If any item does not accord with the table, please contact your dealer
immediately.
SOM-6894 CPU module
1 x Heatspreader (1960062204N001)
Warning! Warnings indicate conditions, which if not observed, can cause personal
injury!
Caution! Cautions are included to help you avoid damaging hardware or losing
data. e.g.
There is a danger of a new battery exploding if it is incorrectly installed.
Do not attempt to recharge, force open, or heat the battery. Replace the
battery only with the same or equivalent type recommended by the man-
ufacturer. Discard used batteries according to the manufacturer's
instructions.
Note! Notes provide optional additional information.

v SOM-6894 User Manual
Safety Instructions
1. Read these safety instructions carefully.
2. Keep this User Manual for later reference.
3. Disconnect this equipment from any AC outlet before cleaning. Use a damp
cloth. Do not use liquid or spray detergents for cleaning.
4. For plug-in equipment, the power outlet socket must be located near the equip-
ment and must be easily accessible.
5. Keep this equipment away from humidity.
6. Put this equipment on a reliable surface during installation. Dropping it or letting
it fall may cause damage.
7. The openings on the enclosure are for air convection. Protect the equipment
from overheating. DO NOT COVER THE OPENINGS.
8. Make sure the voltage of the power source is correct before connecting the
equipment to the power outlet.
9. Position the power cord so that people cannot step on it. Do not place anything
over the power cord.
10. All cautions and warnings on the equipment should be noted.
11. If the equipment is not used for a long time, disconnect it from the power source
to avoid damage by transient overvoltage.
12. Never pour any liquid into an opening. This may cause fire or electrical shock.
13. Never open the equipment. For safety reasons, the equipment should be
opened only by qualified service personnel.
14. If one of the following situations arises, get the equipment checked by service
personnel:
The power cord or plug is damaged.
Liquid has penetrated into the equipment.
The equipment has been exposed to moisture.
The equipment does not work well, or you cannot get it to work according to
the user's manual.
The equipment has been dropped and damaged.
The equipment has obvious signs of breakage.
15. DO NOT LEAVE THIS EQUIPMENT IN AN ENVIRONMENT WHERE THE
STORAGE TEMPERATURE MAY GO BELOW -20° C (-4° F) OR ABOVE 60° C
(140° F). THIS COULD DAMAGE THE EQUIPMENT. THE EQUIPMENT
SHOULD BE IN A CONTROLLED ENVIRONMENT.
16. CAUTION: DANGER OF EXPLOSION IF BATTERY IS INCORRECTLY
REPLACED. REPLACE ONLY WITH THE SAME OR EQUIVALENT TYPE
RECOMMENDED BY THE MANUFACTURER, DISCARD USED BATTERIES
ACCORDING TO THE MANUFACTURER'S INSTRUCTIONS.
The sound pressure level at the operator's position according to IEC 704-1:1982 is
no more than 70 dB (A).
DISCLAIMER: This set of instructions is given according to IEC 704-1. Advantech
disclaims all responsibility for the accuracy of any statements contained herein.

SOM-6894 User Manual vi
Safety Precaution - Static Electricity
Follow these simple precautions to protect yourself from harm and the products from
damage.
To avoid electrical shock, always disconnect the power from your PC chassis
before you work on it. Don't touch any components on the CPU card or other
cards while the PC is on.
Disconnect power before making any configuration changes. The sudden rush
of power as you connect a jumper or install a card may damage sensitive elec-
tronic components.

vii SOM-6894 User Manual
Contents
Chapter 1 General Information ............................1
1.1 Introduction ............................................................................................... 2
1.2 Specifications ............................................................................................ 2
1.2.1 Board Information ......................................................................... 2
1.2.2 System Information ....................................................................... 2
1.2.3 Display .......................................................................................... 3
1.2.4 Expansion Interface ...................................................................... 3
1.2.5 I/O ................................................................................................. 3
1.2.6 iManager 2.0 ................................................................................. 4
1.2.7 Mechanical and Environmental Specification ............................... 4
1.3 Functional Block Diagram ......................................................................... 5
Chapter 2 Mechanical Information ......................7
2.1 Board Information...................................................................................... 8
Figure 2.1 Board Chips Identify - Front........................................ 8
Figure 2.2 Board Chips Identify - Back ........................................ 8
2.2 Mechanical Drawing.................................................................................. 9
Figure 2.3 Board Mechanical Drawing - Front ............................. 9
Figure 2.4 Board Mechanical Drawing - Back ............................. 9
2.3 Assembly Drawing .................................................................................. 10
Figure 2.5 Assembly Drawing (For Reference Only) ................. 10
Figure 2.6 Heatspreader Pre-Assembly (For Reference Only).. 10
2.4 Assembly Drawing .................................................................................. 11
Figure 2.7 Main Chip Height and Tolerance (GT2).................... 11
Figure 2.8 Main Chip Height and Tolerance (GT3).................... 11
Chapter 3 AMI BIOS ............................................13
3.1 Introduction ............................................................................................. 14
Figure 3.1 BIOS Setup Utility Main Screen................................ 14
3.2 Entering Setup ........................................................................................ 15
3.2.1 Main Setup.................................................................................. 15
Figure 3.2 Main setup screen .................................................... 15
3.2.2 Advanced BIOS Features Setup................................................. 16
Figure 3.3 Advanced BIOS Features Setup Screen .................. 16
Figure 3.4 ACPI Settings ........................................................... 17
Figure 3.5 Trusted Computing ................................................... 18
Figure 3.6 CPU Configuration.................................................... 19
Figure 3.7 SATA Configuration.................................................. 21
Figure 3.8 PCH-FW Configuration............................................. 22
Figure 3.9 Firmware Update Configuration................................ 23
Figure 3.10AMT Configuration.................................................... 24
Figure 3.11USB Configuration.................................................... 25
Figure 3.12Super IO Configuration............................................. 26
Figure 3.13COM Port 1 Configuration ........................................ 27
Figure 3.14COM Port 2 Configuration ........................................ 28
Figure 3.15Parallel Port Configuration........................................ 29
Figure 3.16PC Hardware Monitor ............................................... 30
Figure 3.17iManager Configuration ............................................ 31
Figure 3.18COM 3 Configuration................................................ 32
Figure 3.19COM Port 4 Configuration ........................................ 33
Figure 3.20Hardware Monitor ..................................................... 34

SOM-6894 User Manual viii
Figure 3.21Serial Port Console Redirection ............................... 35
3.2.3 Chipset........................................................................................ 36
Figure 3.22Chipset Setup........................................................... 36
Figure 3.23PCH-IO Configuration .............................................. 37
Figure 3.24PCI Express Configuration ....................................... 38
Figure 3.25PCI Express Root Port 1 Configuration.................... 39
Figure 3.26PCI Express Root Port 2 Configuration.................... 40
Figure 3.27PCI Express Root Port 3 Configuration.................... 42
Figure 3.28PCI Express Root Port 4 Configuration.................... 43
Figure 3.29USB Configuration.................................................... 45
Figure 3.30PCH Azalia Configuration......................................... 46
Figure 3.31System Agent (SA) Configuration ............................ 47
Figure 3.32Graphics Configuration............................................. 48
Figure 3.33LCD Control.............................................................. 49
Figure 3.34Memory Configuration .............................................. 50
Figure 3.35GT- Power Management Control ............................. 51
3.2.4 Boot Settings .............................................................................. 52
Figure 3.36Boot Setup Utility...................................................... 52
Figure 3.37CSM parameters ...................................................... 53
3.2.5 Security Setup ............................................................................ 54
Figure 3.38Security Setup .......................................................... 54
3.2.6 Save & Exit ................................................................................. 55
Figure 3.39Save & Exit............................................................... 55
Chapter 4 S/W Introduction & Installation........ 57
4.1 S/W Introduction ..................................................................................... 58
4.2 Driver Installation .................................................................................... 58
4.2.1 Windows Driver Setup ................................................................ 58
4.2.2 Other OS..................................................................................... 58
4.3 Advantech iManager ............................................................................... 59
Appendix A Pin Assignment................................. 61
A.1 SOM-6894 Type 6 Pin Assignment......................................................... 62
Appendix B Watchdog Timer................................ 67
B.1 Programming the Watchdog Timer ......................................................... 68
Appendix C Programming GPIO........................... 69
C.1 GPIO Register......................................................................................... 70
Appendix D System Assignments........................ 71
D.1 System I/O Ports..................................................................................... 72
Table D.1: System I/O ports....................................................... 72
D.2 DMA Channel Assignments .................................................................... 74
Table D.2: DMA Channel Assignments ..................................... 74
D.3 Interrupt Assignments ............................................................................. 74
Table D.3: Interrupt Assignments .............................................. 74
D.4 Memory Map ........................................................................................... 75
Table D.4: 1st MB Memory Map ................................................ 75

Chapter 1
1General Information
This chapter gives background
information on the SOM-6894 CPU
Computer on Module.
Sections include:
Introduction
Specification
Functional Block Diagram

SOM-6894 User Manual 2
1.1 Introduction
SOM-6894 is a COM Express Compact module with pin-out Type 6 that fully com-
plies with the PICMG (PCI Industrial Computer Manufactures Group) COM.0 R2.1
specification. This product is designed with the latest Intel 4th generation ultra low
power processors- Intel® Core™ i7-4650U, i5-4300U, i3-4010U, and Intel® Celeron
2980U which integrates the CPU and PCH onto one single chip. SOM-6894 has 15%
CPU performance improvement than previous generation, GT3 graphics, and lower
Thermal Design Power (TDP) 15W.
To compare with previous versions, SOM-6894 delivers improved graphics perfor-
mance with the latest Intel® HD graphics with DX 11.1, OGL 3.2, OCL 1.2 support. It
can support dual and triple independent displays for even better media and display
capabilities. In addition, SOM-6894 features up to 16GB of DDR3L 1600MHz non-
ECC un-buffered memory, 4 PCIe x1 (optional for 1 PCIe x4), 1 GLAN, 4 SATA, 2
USB 3.0, 8 USB 2.0, and 8 GPIO functions. Due to the outstanding performance,
small form-factor, and rich expansion interfaces, this product is ideal for medical, dig-
ital signage, automation and surveillance applications.
Advantech iManager 2.0 was designed to satisfy a lot of embedded application
requirements such as multi-level watchdog timer, voltage and temperature monitor-
ing, thermal protection and mitigation through processor throttling, LCD backlight on/
off and brightness control, embedded storage for customized information, etc. Com-
bining Advantech SUSI Access, it can remotely monitor and control devices via the
Internet for easy maintenance. All Advantech COM Express modules integrate iMan-
ager and SUSI Access to benefit customer's applications.
1.2 Specifications
1.2.1 Board Information
Pin Definition: PICMG COM.0 R2.1 Type 6 pin-out definition
Form Factor: PICMG COM.0 R2.1 Compact Module 95 x 95 mm
1.2.2 System Information
CPU: 4th Generation Intel® Core Processor (U-Processor Line)
Chipset: N/A
Memory: 2 SODIMM Socket for DDR3L-1600, up to 16 GB
BIOS: AMI UEFI BIOS @ 128Mb
Power management: Supports power saving modes including Normal /
Standby / Suspend modes. ACPI 2.0 compliant
CPU+PCH Standard Freq.
Intel® Turbo Boost
Frequency 2.0
Max Single Core
Turbo Frequency
Core Cache
(MB) TDP(W)
i7-4650U 1.7 GHz 3.3 GHz 2 4 15
i5-4300U 1.9 GHz 2.9 GHz 2 3 15
i3-4010U 1.7 GHz NA 2 3 15
2980U 1.6 GHz NA 2 2 15

3 SOM-6894 User Manual
Chapter 1 General Information
1.2.3 Display
Graphic Core: Intel® HD Graphic supports DX11.1, OGL3.2, OCL1.2
VGA: Resolution up to 1920 x 1200
LVDS: Supports single/dual channel 18/24-bit, resolution up to 1920 x 1200 @
60 Hz
DDI (HDMI/DVI/DisplayPort): Supports HDMI, DisplayPort, DVI
(DDI2:Optional)
Resolution:
–HDMI up to 4096 x 2304 @24 Hz
–DVI up to 1920 x 1200 @ 60 Hz
–DP up to 3200 x 2000 @ 60 Hz
Dual Display:
–VGA + DP
–VGA + HDMI
–VGA + LVDS
–LVDS + DP
–LVDS + HDMI
Triple Display:
–VGA + LVDS + DP
–VGA + LVDS + HDMI
1.2.4 Expansion Interface
PCI Express x1: Supports 4 PCIe x1 compliant ports by default.
Audio Interface: Intel HD Audio interface
LPC Bus: Yes (24 MHz)
SMBus: Yes
I2C Bus: up to 1 MB/s
SPI: Supports SPI BIOS only
1.2.5 I/O
Ethernet: Intel i218LM Gigabit LAN supports 10/100/1000 Mbps Speed
SATA: Supports 4 ports SATA Gen2 (3 Gb/s) and Gen3 (6Gb/s), RAID 0, 1, 5,
10
USB Interface: Supports 2 ports USB3.0, 8 ports USB 2.0
Panel Control: Supports panel backlight on/off control, brightness control
Thermal Protection: Supports thermal shutdown or CPU throttling
Watchdog Timer: 65536 level timer interval, from 0 ~ 65535 sec
Smart Fan: 2 Ports; 1 Port on COM Module. Support 12V Fan, 1 Port on Carrier
Board
CPU Graphics Core Base Freq. Max Freq.
i7-4650U Intel® HD graphics 5000 200 MHz 1.1 GHz
i5-4300U Intel® HD graphics 4400 200 MHz 1.1 GHz
i3-4010U Intel® HD Graphics 4400 200 MHz 1 GHz
2980U Intel® HD Graphics 200 MHz 1 GHz
x4 x2 x1
Default 0 0 4
Option 1 1 0 0

SOM-6894 User Manual 4
GPIO: 8-bit GPIO
Power Supply Voltage: ATX (Vin 4.75-20V, Vsb 4.75-5.25V)
TPM: N/A
1.2.6 iManager 2.0
Refer to section 4.3.
1.2.7 Mechanical and Environmental Specification
Dimensions: 95 x 95 mm (3.74" x 3.74")
Power Type and Supply Voltage:
–ATX (Vin 4.75 - 20 V, Vsb 4.75 - 5.25 V)
Power Requirement:
–Test condition: Intel core i7-4650U CPU @ 1.70 GHz, Intel core i5-4300U
CPU @ 1.90 GHz, Intel core i3-4010U CPU @ 1.70 GHz, ADVANTECH 8 G
DDR3L-1600 I-GRD*2, WIN7 32-bit, Rated voltage DC +4.75 V, +12 V, +21 V
–Idle: +12 V @ 0.37A (i7), 0.35A (i5), 0.37A (i3), 0.34A (Celeron)
–Max: +12 V @ 1.72A(i7), 1.31A(i5), 1.13A (i3), 0.95A (Celeron)
Temperature Specification:
–Operating: 0 ~ 60°C (32 ~ 140°F)
–Storage: -40 ~ 85°C (-40 ~ 185°F)
Humidity Specification:
–Operating: 40°C @ 95% relative humidity, non-condensing
–Storage: 60°C @ 95% relative humidity, non-condensing
Note! Based on Intel's document, the Advanced Configuration and Power
Interface, Version 2.0b defines and optional Sleep button. It differs from
the power button in that it only is a request to go from S0 to S1-S4 (not
S5). Also, in an S5 state, the Power Button can wake the system, but
the Sleep Button cannot.
This is partial compatible with PICMG COM.0 R2.1 spec for SOM-6894.
If customer would like to have the wake up function, this function can be
worked via wake signal or power button.

5 SOM-6894 User Manual
Chapter 1 General Information
1.3 Functional Block Diagram
Connector Row C,D
Connector Row A,B
LPC BUS (24MHz)
Intel® Core™ i7/i5/i3/
Celeron® Processor
(U-Processor Line)
2 USB 3.0
DDI 1 HDMI/DisplayPort/DVI
DDI 2 HDMI/DisplayPort/DVI
(Option with Analog VGA)
Analog VGA
Giga LAN
Intel
i218LM
4 PCIe x1 (optional for 1 PCIe x4)
4 SATA3
8 USB 2.0
HD Audio
1 PCIex1
Dual Channel LVDS
Chrontel
CH7511
eDP
Chrontel
CH7517
DDI 2 DP
iManager 2.0
WDT / GPIO / I2C
SMBus
SPI BIOS SPI Bus
RS1 / RS2 / FAN
VR12.6
Dual 204-pin SODIMMs up to 16GB
Dual Channel DDR3L

SOM-6894 User Manual 6

Chapter 2
2Mechanical
Information
This chapter gives mechanical
information on the SOM-6894 CPU
Computer on Module.
Sections include:
Board Information
Mechanical Drawing
Assembly Drawing

SOM-6894 User Manual 8
2.1 Board Information
The figures below indicate the main chips on SOM-6894 Computer-on-Module.
Please aware of these positions while designing your own carrier board to avoid
mechanical issues, as well as designing thermal solution contact points for best ther-
mal dissipation performance.
Figure 2.1 Board Chips Identify - Front
Figure 2.2 Board Chips Identify - Back
BIOS Socket
DDR3L
SODIMM
Processor
(With chipset)
On-Module
Smart FAN
connector
COM Express
Connector

9 SOM-6894 User Manual
Chapter 2 Mechanical Information
2.2 Mechanical Drawing
For more details about 2D/3D models, please look on the Advantech COM support
service website http://com.advantech.com.
Figure 2.3 Board Mechanical Drawing - Front
Figure 2.4 Board Mechanical Drawing - Back
6

SOM-6894 User Manual 10
2.3 Assembly Drawing
These figures demonstrate the assembly order from thermal module, COM module to
carrier board.
Figure 2.5 Assembly Drawing (For Reference Only)
There are 4 reserved screw holes for SOM-6894 to be pre-assembled with heat
spreader.
Figure 2.6 Heatspreader Pre-Assembly (For Reference Only)

11 SOM-6894 User Manual
Chapter 2 Mechanical Information
2.4 Assembly Drawing
Please consider the CPU and chip height tolerance when designing your thermal
solution.
*F5=NOM : 1.437 TOL:±0.112 (POST SMT STACKUP HEIGHT BASED ON LIMITED
DATA FROM INTEL REFERENCE BOARD DESIGN)
Figure 2.7 Main Chip Height and Tolerance (GT2)
*F5=NOM : 1.437 TOL:±0.112 (POST SMT STACKUP HEIGHT BASED ON LIMITED
DATA FROM INTEL REFERENCE BOARD DESIGN)
Figure 2.8 Main Chip Height and Tolerance (GT3)
1.437±0.112 (MILLIMETERS)
1.437±0.112 (MILLIMETERS)

SOM-6894 User Manual 12