Kontron COMe Eval Carrier T7 User manual


USER GUIDE
COMe Eval Carrier T7 (A2T7)
Rev 1.1
Doc.-ID: 1068-1349

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COME EVAL CARRIER T7 (A2T7) - USER GUIDE
Disclaimer
Kontron would like to point out that the information contained in this user guide may be subject to alteration,
particularly as a result of the constant upgrading of Kontron products. This document does not entail any guarantee
on the part of Kontron with respect to technical processes described in the user guide or any product characteristics
set out in the user guide. Kontron assumes no responsibility or liability for the use of the described product(s),
conveys no license or title under any patent, copyright or mask work rights to these products and makes no
representations or warranties that these products are free from patent, copyright or mask work right infringement
unless otherwise specified. Applications that are described in this user guide are for illustration purposes only.
Kontron makes no representation or warranty that such application will be suitable for the specified use without
further testing or modification. Kontron expressly informs the user that this user guide only contains a general
description of processes and instructions which may not be applicable in every individual case. In cases of doubt,
please contact Kontron.
This user guide is protected by copyright. All rights are reserved by Kontron. No part of this document may be
reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer
language, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise), without the
express written permission of Kontron. Kontron points out that the information contained in this user guide is
constantly being updated in line with the technical alterations and improvements made by Kontron to the products
and thus this user guide only reflects the technical status of the products by Kontron at the time of publishing.
Brand and product names are trademarks or registered trademarks of their respective owners.
©2022 by Kontron Europe GmbH
Kontron Europe GmbH
Gutenbergstraße 2
85737 Ismaning,Germany
www.kontron.com

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Intended Use
THIS DEVICE AND ASSOCIATED SOFTWARE ARE NOT DESIGNED, MANUFACTURED OR INTENDED FOR USE OR RESALE
FOR THE OPERATION OF NUCLEAR FACILITIES, THE NAVIGATION, CONTROL OR COMMUNICATION SYSTEMS FOR
AIRCRAFT OR OTHER TRANSPORTATION, AIR TRAFFIC CONTROL, LIFE SUPPORT OR LIFE SUSTAINING APPLICATIONS,
WEAPONS SYSTEMS, OR ANY OTHER APPLICATION IN A HAZARDOUS ENVIRONMENT, OR REQUIRING FAIL-SAFE
PERFORMANCE, OR IN WHICH THE FAILURE OF PRODUCTS COULD LEAD DIRECTLY TO DEATH, PERSONAL INJURY, OR
SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE (COLLECTIVELY, "HIGH RISK APPLICATIONS").
You understand and agree that your use of Kontron devices as a component in High Risk Applications is entirely at
your risk. To minimize the risks associated with your products and applications, you should provide adequate design
and operating safeguards. You are solely responsible for compliance with all legal, regulatory, safety, and security
related requirements concerning your products. You are responsible to ensure that your systems (and any Kontron
hardware or software components incorporated in your systems) meet all applicable requirements. Unless otherwise
stated in the product documentation, the Kontron device is not provided with error-tolerance capabilities and cannot
therefore be deemed as being engineered, manufactured or setup to be compliant for implementation or for resale as
device in High Risk Applications. All application and safety related information in this document (including application
descriptions, suggested safety measures, suggested Kontron products, and other materials) is provided for reference
only.
Handling and operation of the product is permitted only for trained personnel within a work
place that is access controlled. Please follow the “General Safety Instructions” supplied with
the system.
You find the most recent version of the “General Safety Instructions“ online in the download
area of this product.

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Revision History
Revision Brief Description of Changes Date of Issue Author
1.0 Initial issue 2021-October-12 hjs
1.1 New Adapter card specified in chapter 9/, new RMA
link,
2022-April-28 hjs
Terms and Conditions
Kontron warrants products in accordance with defined regional warranty periods. For more information about
warranty compliance and conformity, and the warranty period in your region, visit http://www.kontron.com/terms-
and-conditions.
Kontron sells products worldwide and declares regional General Terms & Conditions of Sale, and Purchase Order Terms
& Conditions. Visit http://www.kontron.com/terms-and-conditions.
For contact information, refer to the corporate offices contact information on the last page of this user guide or visit
our website CONTACT US.
Customer Support
Find Kontron contacts by visiting: https://www.kontron.de/support-and-services.
Customer Service
As a trusted technology innovator and global solutions provider, Kontron extends its embedded market strengths into
a services portfolio allowing companies to break the barriers of traditional product lifecycles. Proven product
expertise coupled with collaborative and highly-experienced support enables Kontron to provide exceptional peace of
mind to build and maintain successful products.
For more details on Kontron’s service offerings such as: enhanced repair services, extended warranty, Kontron
training academy, and more visit https://www.kontron.de/support-and-services.
Customer Comments
If you have any difficulties using this user guide, discover an error, or just want to provide some feedback, contact
Kontron support. Detail any errors you find. We will correct the errors or problems as soon as possible and post the
revised user guide on our website.

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Symbols
The following symbols may be used in this manual
DANGER indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
WARNING indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
NOTICE indicates a property damage message.
CAUTION indicates a hazardous situation which, if not avoided,
may result in minor or moderate injury.
Electric Shock!
This symbol and title warn of hazards due to electrical shocks (> 60 V) when touching
products or parts of products. Failure to observe the precautions indicated and/or
prescribed by the law may endanger your life/health and/or result in damage to your
material.
ESD Sensitive Device!
This symbol and title inform that the electronic boards and their components are sensitive
to static electricity. Care must therefore be taken during all handling operations and
inspections of this product in order to ensure product integrity at all times.
HOT Surface!
Do NOT touch! Allow to cool before servicing.
Laser!
This symbol inform of the risk of exposure to laser beam and light emitting devices (LEDs)
from an electrical device. Eye protection per manufacturer notice shall review before
servicing.
This symbol indicates general information about the product and the user guide.
This symbol also indicates detail information about the specific product configuration.
This symbol precedes helpful hints and tips for daily use.

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For Your Safety
Your new Kontron product was developed and tested carefully to provide all features necessary to ensure its
compliance with electrical safety requirements. It was also designed for a long fault-free life. However, the life
expectancy of your product can be drastically reduced by improper treatment during unpacking and installation.
Therefore, in the interest of your own safety and of the correct operation of your new Kontron product, you are
requested to conform with the following guidelines.
High Voltage Safety Instructions
As a precaution and in case of danger, the power connector must be easily accessible. The power connector is the
product’s main disconnect device.
Warning
All operations on this product must be carried out by sufficiently skilled personnel only.
Electric Shock!
Before installing a non hot-swappable Kontron product into a system always ensure that
your mains power is switched off. This also applies to the installation of piggybacks. Serious
electrical shock hazards can exist during all installation, repair, and maintenance operations
on this product. Therefore, always unplug the power cable and any other cables which
provide external voltages before performing any work on this product.
Earth ground connection to vehicle’s chassis or a central grounding point shall remain
connected. The earth ground cable shall be the last cable to be disconnected or the first
cable to be connected when performing installation or removal procedures on this product.
Special Handling and Unpacking Instruction
ESD Sensitive Device!
Electronic boards and their components are sensitive to static electricity. Therefore, care
must be taken during all handling operations and inspections of this product, in order to
ensure product integrity at all times.
Do not handle this product out of its protective enclosure while it is not used for operational purposes unless it is
otherwise protected.
Whenever possible, unpack or pack this product only at EOS/ESD safe work stations. Where a safe work station is not
guaranteed, it is important for the user to be electrically discharged before touching the product with his/her hands
or tools. This is most easily done by touching a metal part of your system housing.
It is particularly important to observe standard anti-static precautions when changing piggybacks, ROM devices,
jumper settings etc. If the product contains batteries for RTC or memory backup, ensure that the product is not placed
on conductive surfaces, including anti-static plastics or sponges. They can cause short circuits and damage the
batteries or conductive circuits on the product.

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Lithium Battery Precautions
If your product is equipped with a lithium battery, take the following precautions when replacing the battery.
Danger of explosion if the battery is replaced incorrectly.
Replace only with same or equivalent battery type recommended by the manufacturer.
Dispose of used batteries according to the manufacturer’s instructions.
General Instructions on Usage
In order to maintain Kontron’s product warranty, this product must not be altered or modified in any way. Changes or
modifications to the product, that are not explicitly approved by Kontron and described in this user guide or received
from Kontron Support as a special handling instruction, will void your warranty.
This product should only be installed in or connected to systems that fulfill all necessary technical and specific
environmental requirements. This also applies to the operational temperature range of the specific board version
that must not be exceeded. If batteries are present, their temperature restrictions must be taken into account.
In performing all necessary installation and application operations, only follow the instructions supplied by the
present user guide.
Keep all the original packaging material for future storage or warranty shipments. If it is necessary to store or ship
the product then re-pack it in the same manner as it was delivered.
Special care is necessary when handling or unpacking the product. See Special Handling and Unpacking Instruction.
Quality and Environmental Management
Kontron aims to deliver reliable high-end products designed and built for quality, and aims to complying with
environmental laws, regulations, and other environmentally oriented requirements. For more information regarding
Kontron’s quality and environmental responsibilities, visit http://www.kontron.com/about-kontron/corporate-
responsibility/quality-management.
Disposal and Recycling
Kontron’s products are manufactured to satisfy environmental protection requirements where possible. Many of the
components used are capable of being recycled. Final disposal of this product after its service life must be
accomplished in accordance with applicable country, state, or local laws or regulations.

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WEEE Compliance
The Waste Electrical and Electronic Equipment (WEEE) Directive aims to:
Reduce waste arising from electrical and electronic equipment (EEE)
Make producers of EEE responsible for the environmental impact of their products, especially when the product
become waste
Encourage separate collection and subsequent treatment, reuse, recovery, recycling and sound environmental
disposal of EEE
Improve the environmental performance of all those involved during the lifecycle of EEE
Environmental protection is a high priority with Kontron.
Kontron follows the WEEE directive
You are encouraged to return our products for proper disposal.

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Table of Contents
Disclaimer .............................................................................................................................................................................................................3
Intended Use....................................................................................................................................................................................................... 4
Revision History..................................................................................................................................................................................................5
Symbols .................................................................................................................................................................................................................6
For Your Safety....................................................................................................................................................................................................7
High Voltage Safety Instructions ..................................................................................................................................................................7
Lithium Battery Precautions.......................................................................................................................................................................... 8
General Instructions on Usage...................................................................................................................................................................... 8
Quality and Environmental Management ................................................................................................................................................. 8
Disposal and Recycling.................................................................................................................................................................................... 8
WEEE Compliance...............................................................................................................................................................................................9
Table of Contents .............................................................................................................................................................................................10
List of Tables.......................................................................................................................................................................................................11
List of Figures ....................................................................................................................................................................................................12
1/ Introduction..........................................................................................................................................................................................14
1.1. Product Description...................................................................................................................................................................................14
1.2. Product Naming Clarification ................................................................................................................................................................15
1.3. Understanding COM Express® Functionality...................................................................................................................................15
1.4. COM Express® Documentation.............................................................................................................................................................16
1.5. COM Express® Benefits...........................................................................................................................................................................16
2/ System specifications.......................................................................................................................................................................17
2.1. Component Main Data.............................................................................................................................................................................17
2.2. Environmental Conditions.....................................................................................................................................................................18
2.3. Block diagram............................................................................................................................................................................................19
3/ Mainboard Views...............................................................................................................................................................................20
3.1. Top View......................................................................................................................................................................................................20
3.2. Front panel .................................................................................................................................................................................................21
4/ Mechanical Specification ................................................................................................................................................................22
4.1. Dimensions.................................................................................................................................................................................................22
5/ Interfaces and Connectors.............................................................................................................................................................23
5.1. 1 GB Ethernet Connector (J14) ..............................................................................................................................................................23
5.2. USB 3.1 Double Connector (J68)..........................................................................................................................................................24
5.3. COM Ports (J68)........................................................................................................................................................................................ 25
5.4. CPLD UART (J79).......................................................................................................................................................................................26
5.5. 10 GB Ethernet Add-in Card Connector (J7)..................................................................................................................................... 27
5.6. SATA 6 GB (J15, J16)..................................................................................................................................................................................29
5.7. PCIe Slots (J3 – J6) ...................................................................................................................................................................................29
5.8. NC-SI Connector (J80)............................................................................................................................................................................30
5.9. Fan Connector (J47).................................................................................................................................................................................31
5.10. BIOS Flash Socket (J19) .........................................................................................................................................................................31
5.11. SPI Connector (J62) ................................................................................................................................................................................32
5.12. GPIO - General Purpose Input and Output (J20).......................................................................................................................... 32
5.13. IPMB Header (J85) ................................................................................................................................................................................. 33
5.14. Power Management Header (J8)...................................................................................................................................................... 33
5.15. Status Signal Header (J10) ..................................................................................................................................................................34
5.16. Front Panel Connector (J11) ................................................................................................................................................................ 35
5.17. I2C (J51)...................................................................................................................................................................................................... 35
5.18. SMBus (J52) .............................................................................................................................................................................................36
5.19. ATX Power connector (J54) ................................................................................................................................................................ 37

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5.20. ATX Power connector (J53)................................................................................................................................................................38
5.21. RTC Socket (J21)......................................................................................................................................................................................38
5.22. DIP Switch (SW7)...................................................................................................................................................................................39
5.23. Button Switches ....................................................................................................................................................................................40
5.24. Jumper .......................................................................................................................................................................................................41
5.24.1. Jumper (J43, J46).................................................................................................................................................................................41
5.24.2. Jumper (J27, J28, J30) .......................................................................................................................................................................42
5.24.3. Jumper (J36)........................................................................................................................................................................................42
5.24.4. Jumper (V5_MOD, J75, J31, J35, V_WIDE) ...................................................................................................................................43
6/ Electrical Specification ....................................................................................................................................................................44
6.1. Supply Voltage ..........................................................................................................................................................................................44
6.2. Power Supply Rise time.........................................................................................................................................................................44
6.3. Supply Voltage Ripple............................................................................................................................................................................44
7/ Features................................................................................................................................................................................................46
7.1. Rapid Shutdown (SW5)...........................................................................................................................................................................46
7.2. LEDs and Indicators ................................................................................................................................................................................47
8/ COMe Connector Pin-out List ........................................................................................................................................................49
9/ Adapter Cards..................................................................................................................................................................................... 53
9.1. Adapter Card ADA-COMe-T7-G2 4X10G DAC - DEV-TOOL (A2DC)........................................................................................... 53
9.2. Adapter Card ADA-COMe-T7-G2 4x 10G RJ45 - DEV-TOOL (A2X5)......................................................................................... 55
9.3. Adapter Cards ADA-COMe-T7-G2 2x 10G SFP+ - DEV-TOOL (A2IN)/ADA-COMe-T7-G2 4x 10G SFP+ - DEV-TOOL
(A2IN) 57
10/ Technical Support .............................................................................................................................................................................60
10.1. Warranty ...................................................................................................................................................................................................60
10.2. Returning Defective Merchandise ...................................................................................................................................................60
List of Acronyms..............................................................................................................................................................................................62
List of Tables
Table 1: Features...............................................................................................................................................................................................15
Table 2: Component Main Data....................................................................................................................................................................17
Table 3: Environmental Conditions ............................................................................................................................................................18
Table 4: 1 GB Ethernet C onnector .............................................................................................................................................................23
Table 5: Signals ................................................................................................................................................................................................23
Table 6: USB 3.1 Double Connector ...........................................................................................................................................................24
Table 7: Double COM Ports........................................................................................................................................................................... 25
Table 8: CPLD UART Connector...................................................................................................................................................................26
Table 9: Connector Pinning .......................................................................................................................................................................... 27
Table 10: SATA 6 GB Connector...................................................................................................................................................................29
Table 11: PCIe Slots..........................................................................................................................................................................................29
Table 12: NC-SI Connector Pinning.............................................................................................................................................................30
Table 13: Fan Connector .................................................................................................................................................................................31
Table 14: BIOS Flash Socket Pinout.............................................................................................................................................................31
Table 15: SPI Connector .................................................................................................................................................................................32
Table 16: GPIO Header with 10 pins............................................................................................................................................................32
Table 17: Pinning IPMB Header.................................................................................................................................................................... 33
Table 18: Power Management Header .....................................................................................................................................................33
Table 19: Status Signal Header....................................................................................................................................................................34
Table 20: Front Panel Connector................................................................................................................................................................ 35
Table 21: I2C Header (J51).............................................................................................................................................................................. 35
Table 22: SMBus Header (J52).....................................................................................................................................................................36
Table 23: ATX Power connector with 24 pins ........................................................................................................................................ 37
Table 24: ATX Power connector with 8 pins ..........................................................................................................................................38
Table 25: RTC Socket ......................................................................................................................................................................................38

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Table 26:Function Table DIP Switch..........................................................................................................................................................39
Table 27: LEDs...................................................................................................................................................................................................40
Table 28: Jumper J43, J46 ..............................................................................................................................................................................41
Table 29: Jumper 27 to 30.............................................................................................................................................................................42
Table 30: Jumper J36 ......................................................................................................................................................................................42
Table 31: Jumper J22-23, J24-25, J31, J35.................................................................................................................................................43
Table 32: LED Colors.......................................................................................................................................................................................47
Table 33: LEDs ..................................................................................................................................................................................................47
Table 34: Pin-out List.....................................................................................................................................................................................49
Table 35: Adapter Cards................................................................................................................................................................................ 53
List of Figures
Figure 1: COMe Eval Carrier T7 (A2T7) with four PCIe slots................................................................................................................14
Figure 2: Block Diagram COMe Eval Carrier T7 (A2T7).........................................................................................................................19
Figure 3: Top View of COMe Eval Carrier T7 (A2T7) .............................................................................................................................20
Figure 4: Front Panel.......................................................................................................................................................................................21
Figure 5: Board Dimensions .........................................................................................................................................................................22
Figure 6: 1 GB Ethernet C onnector ............................................................................................................................................................23
Figure 7: USB 3.1 Double Connector...........................................................................................................................................................24
Figure 8: Double COM Ports......................................................................................................................................................................... 25
Figure 9: CPLD UART.......................................................................................................................................................................................26
Figure 10: 10 GB Ethernet Add-in Card Connector ................................................................................................................................ 27
Figure 11: SATA 6 GB........................................................................................................................................................................................29
Figure 12: NC-SI Connector...........................................................................................................................................................................30
Figure 13: Fan Connector with 4 pins.........................................................................................................................................................31
Figure 14: BIOS Flash Socket.........................................................................................................................................................................31
Figure 15: SPI Connector with 8 pins .........................................................................................................................................................32
Figure 16: GPIO Header with 10 pins ..........................................................................................................................................................32
Figure 17: IPMB Header with 4 pins ........................................................................................................................................................... 33
Figure 18: Power Management Header.................................................................................................................................................... 33
Figure 19: Status Signal Header ..................................................................................................................................................................34
Figure 20: Front Panel Connector .............................................................................................................................................................. 35
Figure 21: I2C header with four pins.......................................................................................................................................................... 35
Figure 22: SMBus header with five pins................................................................................................................................................... 36
Figure 23: ATX Power connector with 24 pins....................................................................................................................................... 37
Figure 24: ATX Power connector with 8 pins.........................................................................................................................................38
Figure 25: RTC Socket.....................................................................................................................................................................................38
Figure 26: DIP Switch (Default)...................................................................................................................................................................39
Figure 27: Button Switches ..........................................................................................................................................................................40
Figure 28: Jumper J43, J46.............................................................................................................................................................................41
Figure 29: Jumper 27 to 30 ...........................................................................................................................................................................42
Figure 30: Jumper J36.....................................................................................................................................................................................42
Figure 31: Jumper J22-23...............................................................................................................................................................................43
Figure 32: Power Supply ATX 24-pin for Carrier Board (J54) ...........................................................................................................45
Figure 33: LEDs.................................................................................................................................................................................................47
Figure 34: COMe Connector with 220 pins..............................................................................................................................................49
Figure 35: COMe Connector Pinout ............................................................................................................................................................49
Figure 36: Top View Adapter Card A2DC.................................................................................................................................................. 53
Figure 37: IOs.....................................................................................................................................................................................................53
Figure 38: Block Diagram..............................................................................................................................................................................54
Figure 39: Top View Adapter Card A2X5 .................................................................................................................................................. 55
Figure 40: IOs .................................................................................................................................................................................................... 55
Figure 41: Block Diagram............................................................................................................................................................................... 56
Figure 42: Top View Adapter Card A2IN....................................................................................................................................................57
Figure 43: IOs .....................................................................................................................................................................................................57

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Figure 44: Block Diagram CS4223 with 4x SFP+ interfaces..............................................................................................................58
Figure 45: Block Diagram CS4227 with 2x SFP+ interfaces............................................................................................................... 59

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1/ Introduction
1.1. Product Description
The A2T7-G2 is the successor of the already existing ADT7 COM Express Evaluation Carrier Type7. It is an evaluation,
testing and validation carrier board (baseboard) for COM Express® Type 7 modules in ATX form factor. The A2T7-G2
will allow more flexibility with respect to the 10 GbE configurations. Main purpose of this carrier board is to bring out
all the signals from COM Express® connector of COMe Type7 modules to industry standard interfaces. The key
features are:
Support of COM Express® basic and compact modules (Pin-out Type 7 compliant) with cutout area for 2x
SODIMMs on the bottom side of the PCB
Support of overall 32x PCIe lanes via different PCIe card slots: 4x PCIe slots (1x16 + 1x8 + 2x4)
Support of 2x UART ports via DSUB-9 connector
Flexible configuration of 4x 10 GB Eth interfaces from COMe module via pluggable expansion cards
1x 1000Base-T interface, directly from COMe module with basic EMI/ESD protection in RJ-45 integrated
magnetic connector
4x USB 3.1 gen2 Interface, directly from COMe module with basic EMI/ESD protection and redrivers
2x SATA standard interface, directly from COMe module
External fan connector
Coin cell and options for external RTC
BIOS POST Code display in the form of 7-Segment display array
Pin headers for COM Express® specific signals enabling measurement like GPIOs, I2C, SMBus, Power
management, Status signal
External BIOS flash socket and header for emulator connection
Prepared to support BMC card + NCSI support on separate expansion
Prepared to support Intelligent Platform Management Bus (IPMB) on separate expansion
Figure 1: COMe Eval Carrier T7 (A2T7) with four PCIe slots

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1.2. Product Naming Clarification
The product names for Kontron COM Express® Computer-on-Modules consist of a short form of the industry
standard (COMe-), the form factor (b=basic, c=compact, m=mini), the capital letters for the CPU and Chipset
Codenames (XX) and the pin-out type (#) followed by the CPU Name.
COM Express® defines a Computer-On-Module, or COM, with all components necessary for a bootable host computer,
packaged as a super component.
COMe-bXX# modules are Kontron's COM Express® modules in basic form factor (125 mm x 95 mm)
COMe-cXX# modules are Kontron's COM Express® modules in compact form factor (95 mm x 95 mm)
COMe-eXX# modules are Kontron's COM Express® modules in extended form factor (155 mm x 110 mm)
The COMe Eval Carrier T7 (A2T7) fits all three types of modules.
1.3. Understanding COM Express® Functionality
All Kontron COM Express® extended, basic and compact modules contain two 220pin connectors; each of it has two
rows called Row A & B on primary connector and Row C & D on secondary connector. The COM Express® Computer-
On-Module (COM) features the following maximum amount of interfaces according to the PCI Industrial Computer
Manufacturers Group (PICMG) module Pin-out type.
Table 1: Features
Feature COMe Eval Carrier T7 (A2T7)
10 Gbit Ethernet 4x
SFP+ 2x or 4x
COMe Connec. COMe Connectors 5mm / 8mm
USB 4x USB double stacked
COM 2x DSUB-9
SATA 2x standard slots
Feature Connector Various control signals - such as WAKE, THRM, SMB, I2C – similar
to COMe Eval Carrier Type 7 68300-0000-00-0
PCIe slots 1x x16, 1x x8, 2x x4 – supporting up to PCIe Gen4
Ethernet expansion slot 4x 10G KR signals + Ethernet sideband signals
LEDs SMD LEDs e.g. for carrier activity, board status, LAN and power
status (power good)
GPIO GPIO Header for 8 GPIO signals similar to COMe Eval Carrier Type 7
SMBus header 5-pin header similar to COMe Eval Carrier Type 7
I2C 4-pin header similar to COMe Eval Carrier Type 7
Fan 4-pin fan connector, Voltage can be 5 V or 12 V (default)
IPMB support 4-pin header

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1.4. COM Express® Documentation
The COM Express® Specification defines the COM Express® module form factor, pin-out, and signals. This document is
available at the PICMG® website by filling out the order form.
1.5. COM Express® Benefits
COM Express® modules are compact and highly integrated computers. All modules feature a standardized form
factor and connector layout which carry a specified set of signals. Each COM is based on the COM Express®
specification. This standardization allows designers to create a single-system baseboard that can accept present and
future COM Express® modules.
The baseboard designer can optimize exactly how each of these functions implements physically. Designers can
place connectors precisely where needed for the application on a baseboard designed to optimally fit a system’s
packaging.
A single baseboard design can use a range of COM Express® modules with different sizes and pin-outs. This flexibility
can differentiate products at various price/performance points. The modularity of a COM Express® solution also
ensures against obsolescence when computer technology evolves. A properly designed COM Express® baseboard can
work with several successive generations of COM Express® modules.
A COM Express® baseboard design has many advantages of a customized computer-board design and, additionally,
delivers better obsolescence protection, heavily reduced engineering effort, and faster time to market.

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2/ System specifications
2.1. Component Main Data
The table below summarizes the features of the motherboard.
Table 2: Component Main Data
COMe Eval Carrier T7 (A2T7)
Form factor Testing Hardware with 244.0 mm x 305.0 mm
Memory
EEPROM System
(U17)
PICMG EEPROM
I/O
LAN 1x RJ45 GbE port, expansion slot for 4x 10 GbE adapter cards
USB 4x USB 3.1 double stack
COM 2x DSUB-9
SATA 2x standard slots
Feature Connector Various control signals - such as WAKE, THRM, SMB, I2C
PCIe 1x x16, 1x x8, 2x x4, supporting up to PCIe Gen4
LEDs SMD LEDs e.g. for carrier activity, board status, LAN and power status (power good)
GPIO GPIO Header for 8 GPIO signals
SMBus header 5-pin header
I2C 4-pin header
Battery CR2032 battery holder
Fan 4-pin fan connector, Voltage can be 5
V or 12 V (default)
NC-SI 24-pin Network controller sideband interface
Carrier Board Power
Power input Carrier is powered from standard ATX power supply with ATX 24-pin connector.
Single Supply
Support
carrier requires ATX power
ACPI ACPI 4.0
S-States S0, S4, S5
Single Supply
Simulation Mode
yes
Misc Power
Management
yes
Kontron Features
External I2C Bus Fast I2C, MultiMaster capable
M.A.R.S. support no
Danger of explosion if the lithium battery is incorrectly replaced.
•Replace only with the same or equivalent type recommended by the manufacturer
•Dispose of used batteries according to the manufacturer’s instructions

COMe Eval Carrier T7 (A2T7) User Guide Rev 1.1
www.kontron.com // 18
2.2. Environmental Conditions
Table 3: Environmental Conditions
Operating -0°C to +60°C
Some connectors and supercap has operating temperature only 0°C to +70°C, relative
humidity (non-condensing) 10
% to 93 % at 40°C (acc. to IEC 60068-2-78)
Storage -30°C to +85°C
relative humidity (non-condensing) 10 % to 93 % at 40°C (acc. to IEC 60068-2-78)
Waste Electrical
and Electronic
Equipment (WEEE)
Components and materials of the product must not contain lead, mercury, cadmium,
hexavalent, chromium, polybrominated biphenyls (PBB) or polybrominated diphenyl ethers
(PBDE). (Directive 2012/19/EU)
RoHS II Compliance The product will comply with the European Council Directive on the approximation of the
laws of the member states relating to Directive 2011/65/EU or the last status thereof.
Theoretical MTBF not applicable
Compliance
EMC according to EN 55032 Class B, IEC/EN 61000-6-3 and EN 55024, IEC/EN 61000-6-2
Reach compliant (Regulation (EC) No 1907/2006)
EN 62368-1:2014 - Safety for audio/video and information technology equipment
Component Recognition to UL60950-1 - Information Technology Equipment Including
Electrical Business Equipment
Shock & Vibration according to IEC/EN60068-2-27 (Non-operating shock test – half-
sinusoidal, 11 ms, 15 g) and IEC/EN60068-2-6 (Non-operating vibration – sinusoidal, 10 Hz –
2000 Hz, +/- 0.15 mm, 2 g)

COMe Eval Carrier T7 (A2T7) User Guide Rev 1.1
www.kontron.com // 19
2.3. Block diagram
Figure 2: Block Diagram COMe Eval Carrier T7 (A2T7)

COMe Eval Carrier T7 (A2T7) User Guide Rev 1.1
www.kontron.com // 20
3/ Mainboard Views
3.1. Top View
Figure 3: Top View of COMe Eval Carrier T7 (A2T7)
1. 6x Button Switches (SW1-SW6)
2. CPLD JTAG (2x5 pins, J56)
3. Front Panel Connector (J11)
4. Status Header (J10)
5. NC-SI (J80)
6. Speaker (J32)
7. PCIe x8 (J4)
8. 2x PCIe x4 (J5/J6)
9. PCIe x16 (J3)
10. 2x SATA (J15/J16)
11. DIP Switch (SW7)
12. 2x COMe interface (J1/J2)
13. Jumper (J27, J28, J30)
14. Battery (J21)
15. ATX power connector 24 pins (J54)
16. LPC/eSPI (J61)
17. ATX power connector 4 pins (J53)
18. Power-in V_WIDE_S0_In (J70)
19. Power-in 5V0_S5_Mod (J69)
20. GND (J71)
21. Fan (J47)
22. POST Code Display
23. Button Switch Reset WDT (SW8)
24. GPIO (J20)
25. Power Management (J8)
26. 2x Power Measurement (J9, J82)
27. CPLD UART (8 pins, J79)
28. SPI Flash (J19)
29. SMBus (J52)
30. I2C (J51)
4
13
14
5
6
3
1
28
29
30
7
10
12
17
16
15
18
19
20
21
22
23
24
25
26
27
11
9 8
2