Seco Com-express ccome-c79 User manual

CCOMe-C79

Carrier Board for COM-Express Type 7 Module

on ATX form factor

CCOMe-C79

Unauthorised use, duplication, modification or disclosure of the information to a third-party by any means without prior consent of SECO S.p.A. is prohibited.

Every effort has been made to ensure the accuracy of this manual. However, SECO S.p.A. accepts no responsibility for any inaccuracies, errors or omissions herein.

SECO S.p.A. reserves the right to change precise specifications without prior notice to supply the best product possible.

For further information on this module or other SECO products, but also to get the required assistance for any and possible issues, please contact us using the

dedicated web form available at https://www.seco.com/ (registration required).

Our team is ready to assist you.

Revision

Date

Note

Rif

1.0

2nd August 2021

First release

REVISION HISTORY

 
 CCOMe-C79 
CCOMe-C79 - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: A.R. - Reviewed by E.S. Copyright © 2021 SECO S.p.A. 
3 
INDEX 
 INTRODUCTION.......................................................................................................................................................................... 5 
1.1 Warranty...............................................................................................................................................................................................................................6 
1.2 Information and assistance.....................................................................................................................................................................................................7 
1.3 RMA number request.............................................................................................................................................................................................................7 
1.4 Safety...................................................................................................................................................................................................................................8 
1.5 Electrostatic Discharges.........................................................................................................................................................................................................8 
1.6 RoHS compliance .................................................................................................................................................................................................................8 
1.7 Safety Policy.........................................................................................................................................................................................................................9 
1.8 Terminology and definitions ..................................................................................................................................................................................................10 
1.9 Reference specifications......................................................................................................................................................................................................12 
 OVERVIEW ................................................................................................................................................................................13 
2.1 Introduction.........................................................................................................................................................................................................................14 
2.2 Technical Specifications.......................................................................................................................................................................................................15 
2.3 Electrical Specifications........................................................................................................................................................................................................16 
 Smart Battery SM Bus Connector..................................................................................................................................................................................18 
 RTC Battery ................................................................................................................................................................................................................18 
 Power Rails meanings..................................................................................................................................................................................................19 
2.4 Mechanical Specifications....................................................................................................................................................................................................20 
2.5 Block Diagram.....................................................................................................................................................................................................................21 
 CONNECTORS..........................................................................................................................................................................22 
3.1 Connectors placement.........................................................................................................................................................................................................23 
3.2 Connectors overview...........................................................................................................................................................................................................25 
 Connectors list............................................................................................................................................................................................................25 
 Jumpers and switch list................................................................................................................................................................................................26 
3.3 Connectors description........................................................................................................................................................................................................27 
 COM Express module connectors...............................................................................................................................................................................27 
 PCI-e Slots..................................................................................................................................................................................................................35 
 PCI-e x16 Slot / PEG (PCI Express Graphics x16) Connector ..........................................................................................................................................42 
 eSPI/LPC Debug Connector.........................................................................................................................................................................................46 
 RS232 ports Internal pin Headers..................................................................................................................................................................................47 

 
 CCOMe-C79 
CCOMe-C79 - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: A.R. - Reviewed by E.S. Copyright © 2021 SECO S.p.A. 
4 
 USB ports...................................................................................................................................................................................................................48 
 S-ATA Connectors.......................................................................................................................................................................................................51 
 Feature pin Header......................................................................................................................................................................................................52 
 External BIOS SPI Flash header.....................................................................................................................................................................................53 
 BIOS disable signals....................................................................................................................................................................................................54 
 FuSa Header...............................................................................................................................................................................................................55 
 GPIO pin header / microSD Card Slot............................................................................................................................................................................57 
 Front Panel Header......................................................................................................................................................................................................58 
 External EEPROM I2C Flash socket...............................................................................................................................................................................59 
 POST Code Display.....................................................................................................................................................................................................59 
 JTAG Connector..........................................................................................................................................................................................................59 
 FAN Connector ...........................................................................................................................................................................................................60 
 BMC Connector..........................................................................................................................................................................................................61 
 Networking..................................................................................................................................................................................................................63 
 Buttons.......................................................................................................................................................................................................................67 
 Appendices ...............................................................................................................................................................................68 
4.1 Thermal Design...................................................................................................................................................................................................................69 
4.2 Accessories........................................................................................................................................................................................................................70 
 
 

CCOMe-C79

•Warranty

•Information and assistance

•RMA number request

•Safety

•Electrostatic Discharges

•RoHS compliance

•Safety Policy

•Terminology and definitions

•Reference specifications

CCOMe-C79

1.1Warranty

This product is subject to the Italian Law Decree 24/2002, acting European Directive 1999/44/CE on matters of sale and warranties to consumers.

The warranty on this product lasts 1 year.

Under the warranty period, the Supplier guarantees the buyer assistance and service for repairing, replacing or credit of the item, at the Supplier’s own discretion.

Shipping costs that apply to non-conforming items or items that need replacement are to be paid by the customer.

Items cannot be returned unless previously authorised by the supplier.

The authorisation is released after completing the specific form available on the web-site https://www.seco.com/eu/support/online-rma.html (Online RMA). The RMA

Authorisation number must be put both on the packaging and on the documents shipped with the items, which must include all the accessories in their original

packaging, with no signs of damage to, or tampering with, any returned item.

The error analysis form identifying the fault type must be completed by the customer and must accompany the returned item.

If any of the above mentioned requirements for RMA is not satisfied, the item will be shipped back and the customer will have to pay any and all shipping costs.

Following after a technical analysis, the supplier will verify if all the requirements for which a warranty service applies are met. If the warranty cannot be applied, the

Supplier will calculate the minimum cost of this initial analysis on the item and the repair costs. Costs for replaced components will be calculated separately.

Warning!

All changes or modifications to the equipment not explicitly approved by SECO S.p.A. could impair the equipment’s functionality and could void

the warranty.

CCOMe-C79

1.2Information and assistance

What do I have to do if the product is faulty?

SECO S.p.A. offers the following services:

•SECO website: visit https://www.seco.com to receive the latest information on the product. In most cases it is possible to find useful information to solve the

problem.

•SECO Sales Representative: the Sales Rep can help to determine the exact cause of the problem and search for the best solution.

•SECO Help-Desk: contact SECO Technical Assistance. A technician is at disposal to understand the exact origin of the problem and suggest the correct

solution. E-mail: technical.service@seco.com

Fax (+39) 0575 340434

•Repair centre: it is possible to send the faulty product to the SECO Repair Centre. In this case, follow this procedure:

oReturned items must be accompanied by a RMA Number. Items sent without the RMA number will be not accepted.

oReturned items must be shipped in an appropriate package. SECO is not responsible for damages caused by accidental drop, improper usage, or

customer neglect.

Note: Please have the following information before asking for technical assistance:

-Name and serial number of the product;

-Description of Customer’s peripheral connections;

-Description of Customer’s software (operating system, version, application software, etc.);

-A complete description of the problem;

-The exact words of every kind of error message encountered.

1.3RMA number request

To request a RMA number, please visit SECO’s web-site. On the home page, please select “RMA Online”and follow the procedure described.

A RMA Number will be released within 1 working day (only for on-line RMA requests).

CCOMe-C79

1.4Safety

The CCOMe-C79 board uses only extremely-low voltages.

While handling the board, please use extreme caution to avoid any kind of risk or damages to electronic components.

1.5Electrostatic Discharges

The CCOMe-C79 board, like any other electronic product, is an electrostatic sensitive device: high voltages caused by static electricity could damage some or all

the devices and/or components on-board.

1.6RoHS compliance

The CCOMe-C79 board is designed using RoHS compliant components and is manufactured on a lead-free production line. It is therefore fully RoHS compliant.

Always switch the power off, and unplug the power supply unit, before handling the board and/or connecting cables or other boards.

Avoid using metallic components - like paper clips, screws and similar - near the board when connected to a power supply, to avoid

short circuits due to unwanted contacts with other board components.

If the board has become wet, never connect it to any external power supply unit or battery.

Check carefully that all cables are correctly connected and that they are not damaged.

Whenever handling a CCOMe-C79 board, ground yourself through an anti-static wrist strap. Placement of the board on an anti-static

surface is also highly recommended.

CCOMe-C79

1.7Safety Policy

In order to meet the safety requirements of EN62368-1:2014 standard for Audio/Video, information and communication technology equipment, the CCOMe-C79

Carrier Board shall be:

-used inside a fire enclosure made of non-combustible material or V-1 material

-used inside an enclosure provided with the symbol IEC 60417-5041(element 1a according to clause 9.5.2 of the IEC 62368-1) on the external part;

-installed inside an enclosure compliant with all applicable IEC 62368-1 requirements;

The manufacturer which includes a CCOMe-C79 Carrier Board in his end-user product shall:

-verify the compliance with B.2 and B.3 clauses of the EN62368-1 standard when the module works in its own final operating condition

-prescribe temperature and humidity range for operating, transport and storage conditions;

-prescribe to perform maintenance on the board only when it is off and has already cooled down;

-prescribe that the connections from or to the board have to be compliant to ES1 requirements;

-the board in its enclosure must be evaluated for temperature and airflow considerations.

CCOMe-C79

1.8Terminology and definitions

ACPI Advanced Configuration and Power Interface, an open industrial standard for the board’s devices configuration and power management

BIOS Basic Input / Output System, the Firmware Interface that initializes the board before the OS starts loading

CEC Consumer Electronics Control, an HDMI feature which allows controlling more devices connected together by using only one remote control

DDC Display Data Channel, a kind of I2C interface for digital communication between displays and graphics processing units (GPU)

DP Display Port, a type of digital video display interface

DVI Digital Visual interface, a type of digital video display interface

eDP embedded Display Port, a type of digital video display interface developed especially for internal connections between boards and digital displays

GbE Gigabit Ethernet

Gbps Gigabits per second

GND Ground

GPI/O General purpose Input/Output

HD Audio High Definition Audio, most recent standard for hardware codecs developed by Intel®in 2004 for higher audio quality

HDMI High Definition Multimedia Interface, a digital audio and video interface

I2C Bus Inter-Integrated Circuit Bus, a simple serial bus consisting only of data and clock line, with multi-master capability

JTAG Joint Test Action Group, common name of IEEE1149.1 standard for testing printed circuit boards and integrated circuits through the Debug port

LPC Bus Low Pin Count Bus, a low speed interface based on a very restricted number of signals, deemed to management of legacy peripherals

LVDS Low Voltage Differential Signalling, a standard for transferring data at very high speed using inexpensive twisted pair copper cables, usually used

for video applications

Mbps Megabits per second

N.A. Not Applicable

N.C. Not Connected

OS Operating System

PCI-e Peripheral Component Interface Express

PWM Pulse Width Modulation

PWR Power

SATA Serial Advance Technology Attachment, a differential half duplex serial interface for Hard Disks

SD Secure Digital, a memory card type

SDIO Secure Digital Input/Output, an evolution of the SD standard that allows use the use of the same SD interface to drive different Input/Output

CCOMe-C79

devices, like cameras, GPS, Tuners and so on

SIM Subscriber Identity Module, a card which stores all data of the owner necessary to allow him accessing to mobile communication networks

SM Bus System Management Bus, a subset of the I2C bus protocol dedicated to communication with devices for system management, like a smart battery

and other power supply-related devices

SPI Serial Peripheral Interface, a 4-Wire synchronous full-duplex serial interface which is composed of a master and one or more slaves, individually

enabled through a Chip Select line

TBM To be measured

TMDS Transition-Minimized Differential Signalling, a method for transmitting high speed serial data, normally used on DVI and HDMI interfaces

TTL Transistor-transistor Logic

UIM User Identity Module, an extension of SIM modules.

USB Universal Serial Bus

V_REF Voltage reference Pin

CCOMe-C79

1.9Reference specifications

Here below it is a list of applicable industry specifications and reference documents.

Reference

Link

ACPI

http://www.acpi.info

Com Express

https://www.picmg.org/openstandards/com-express/

Com Express Carrier Design Guide

https://www.picmg.org/wp-content/uploads/PICMG_COMDG_2.0-RELEASED-2013-12-061.pdf

DDC

https://www.vesa.org/

DP, eDP

https://www.vesa.org/

Ethernet

http://standards.ieee.org/about/get/802/802.3.html

HD Audio

http://www.intel.com/content/dam/www/public/us/en/documents/product-specifications/high-definition-audio-specification.pdf

HDMI

http://www.hdmi.org/index.aspx

I2C

http://www.nxp.com/docs/en/user-guide/UM10204.pdf

Intel®Front Panel I/O connectivity DG

http://www.formfactors.org/developer/specs/A2928604-005.pdf

LPC Bus

http://www.intel.com/design/chipsets/industry/lpc.htm

LVDS

http://www.ti.com/lit/ug/snla187/snla187.pdf

PCI Express

http://www.pcisig.com/specifications/pciexpress

SATA

https://www.sata-io.org

SD Card Association

https://www.sdcard.org

SM Bus

http://www.smbus.org/specs

TMDS

http://www.latticesemi.com/view_document?document_id=38351

USB 2.0 and USB OTG

http://www.usb.org/developers/docs/usb20_docs/usb_20_080117.zip

USB 3.0

http://www.usb.org/developers/docs/usb_31_080117.zip

CCOMe-C79

•Introduction

•Technical Specifications

•Electrical Specifications

•Mechanical Specifications

•Block Diagram

CCOMe-C79

2.1Introduction

CCOMe-C79 is a carrier board, designed in ATX form factor, intended for the use with COM-Express Type 7 CPU modules.

COM-Express is an open industry standard defined specifically for COMs (computer on modules). Its definition provides the ability to make a smooth transition from

legacy parallel interfaces to the newest technologies based on serial buses available today.

COM Express CPU modules integrate all the core components of a typical PC-like architecture, and make all interface available through two standardized

connectors, so that COM Express modules become scalable. This means that once an application has been created, there is the ability to diversify the product

range through the use of different performance class or form factor size modules.

Baseboard designers can use just the I/O interfaces that really need, providing, on the carrier board, the routing to the adequate interface connectors.

This versatility allows the designer to create a dense and optimised package, which results in a more reliable product while simplifying system integration.

CCOMe-C79 board can be used both as an evaluation module, to test the functionality of your COM-Express module and design an application specific carrier

board for it, or as a complete carrier board, already suited for standard purposes, with a small space consumption.

In any case, the solutions so realised is fully scalable, and allows to the user to keep his own-designed system continuously up-to-date, since the system can be

updated simply replacing the COM-Express module with a newer one, just unplugging the module and replacing it, without the need of redesigning it.

The robust thermal and mechanical concept, combined with extended power-management capabilities, is perfectly suited for all applications.

2.2Technical Specifications

Supported Modules

COM Express Type 7 compliant modules

Mass Storage interfaces

2x SATA 7p M connectors

µSD Card slot (interface multiplexed with GPIO header)

Networking

1x RJ-45 connector

4x 10Gbase-KR interfaces on OCP Type-C connector

4x MDIO / I2C interfaces on internal pin header

4x SDP interfaces on SMA RF connectors

USB

4 x USB 3.1 Host ports on Dual Type-A sockets

PCI-e

2x PCI-e x4 Slots

1x PCI-e x8 Slot

1x PCI-e x16 Slot

Serial Ports

2 x RS-232 ports on dedicated pin header (from module)

Other Interfaces

BMC connector with SM Bus, I2C, LPC, 1x USB 2.0, 1x PCI-e x1, NCSI signals

4 x GPI + 4 x GPO pin header (interface multiplexed with µSD slot)

SPI Flash Socket

Button / LEDs front panel header

4-pin tachometric FAN connector

I2C + SM Bus on feature Pin header

I2C Flash Socket

SM Bus Smart Battery Connector

4 x 7-segment LCD displays for POST codes

LPC/eSPI internal header

USB Overcurrent header

JTAG connector

FuSa header

SPI Flash header

Buzzer

Power supply: ATX 24 poles connector for carrier board working only

Auxiliary 12V connector for carrier board working only

12 VDC power in connector for COM Express

Coin-cell holder for RTC

Operating temperature: 0°C ÷ +60°C * (Commercial version)

Dimensions: 305x244mm (

* Temperature ranges indicated mean that all components available onboard

are certified for working with a Tcase included in these temperature ranges.

This means that it is customer

’

s responsibility to ensure that all components

’

Tcases remain in the range above indicated. Please also check paragraph

4.1.

CCOMe-C79

2.3Electrical Specifications

CCOMe-C79 board needs to be supplied using a standard ATX Power Supply, which can, however, also be configured to work in AT mode.

Power Connector CN10 is type Molex Mini-Fit Jr. connector,

p/n 39-28-1243, or equivalent, with the pin-out indicated in the

table here on the left (it is the standard 24-pin ATX pin-out).

Mating Connector, MOLEX p/n 39-01-2240 or equivalent, with

female crimp terminal MOLEX series 5566.

PS_ON#: this signal is present only if the board is configured, via CN11 and J2, to work in

ATX mode. If working in AT mode, this pin is connected directly to Ground.

Power connector can be set to work in ATX mode or AT mode by using dedicated jumpers

CN11 and J2, which are a standard pin headers, P2.54mm, 1x3 pin.

The board has an Auxiliary Power connector CN7 providing +12V_RUN for the carrier board section

only, in case multiple PCI-e modules are connected.

CN7 is 6-poles connector, type MOLEX mini-Fit Jr. p/n 39-28-1063 or equivalent.

Mating Connector, MOLEX p/n 39-01-2060 or equivalent, with female crimp terminal

MOLEX series 5566.

ATX / AT Power Connector CN10

Signal

+3.3V_RUN

---

GND

+5V_RUN

PS_ON#

GND

+5V_RUN

GND

PWR_OK_ATX

---

+5V_ALW

+5V_RUN

+12V_RUN

+5V_RUN

+12V_RUN

+5V_RUN

+3.3V_RUN

GND

CN11 position

J2 position

Power mode

2-3

Not Care

AT mode

1-2

ATX mode

1-2

2-3

AT mode

Auxiliary Power Connector CN7

Signal

+12V_RUN

GND

+12V_RUN

GND

+12V_RUN

GND

CCOMe-C79

The board has a CPU Power Connector CN8 providing +12V_RUN for the COM Express module

only.

CN8 is a Molex Mini-Fit jr. 8 poles connector, p/n 39-28-1083 or equivalent.

Mating Connector, MOLEX p/n 39-01-2080 or equivalent, with female crimp

terminal MOLEX series 5566.

The use of wires with section 18 AWG is recommended, in order to ensure the proper amperage of the power section.

The power consumption on +5V_ALW can be monitored by removing 2 way jumper

JP2 and inserting a tester set as ammeter.

Alternatively, the consumption on +5V_ALW can be monitored by inserting a tester set as

ammeter between pin 1 and 2 of +5V_ALW Sense Connector CN4.

CN4 is a dedicated 2 position Wire to Board Terminal Block, type Wurth p/n 691210910002.

The COM Express card edge connector has a PWR_OK signal from main power supplied by

Carrier Board to the module, indicating that all the power supplies to the Module are stable within

specified ranges. The Module will typically not power up until the PWR_OK signal goes active.

CN3 is a standard pin header, P2.54mm, 1x3 pin, dedicated to manage this power

status signal for the Module. For normal operation, set the jumper in 1-2 position, otherwise set in 2-3 position to fix its level high and have it always activated.

Diode LED D17 is present on Carrier Board to notify the system has been correctly powered-up, directly driven through an High-Speed Buffer by PWR_OK signal.

Another diode LED D16, complementary to D17, is used to notify the Reset Output from Module to Carrier Board, directly driven through an High-Speed Buffer by

CB_RESET# signal.

CPU Power Connector CN8

Signal

GND

+12V_RUN

GND

+12V_RUN

GND

+12V_RUN

GND

+12V_RUN

JP2 position

+5V_ALW Current monitor selector

Not inserted

Current measurement enabled

Inserted

Current measurement disabled

CN3 position

Power Ok management

1-2

PSU PWR_OK enabled

2-3

PWR_OK always high

CCOMe-C79

Smart Battery SM Bus Connector

The SM bus coming from COM Express module is carried directly both to the

Feature header (see par.3.3.8) and to a JST 4-pin connector CN29, p/n B4B-PH-K-

S(LF)(SN), or equivalent, which can be used for the connection of external Smart

battery controllers. Pinout as indicated in the left table.

SB_SMB_CLK: Smart Battery System Management bus bidirectional clock line,

+3.3V_ALW electrical level with derived by SMB_CK signal

SB_SMB_DAT: Smart Battery System Management bus bidirectional data line, +3.3V_ALW derived by SMB_DAT signal

SMB_ALERT#: System Management Bus Alert, active low input to the module that can be used to generate an Interrupt or to wake the system

RTC Battery

For the occurrences when the System (Carrier board + COM Express module) is not powered with an external power supply, on board there is a RTC Coin Cell

Battery holder CN9, for the use of standard coin battery type CR2032 with a nominal capacity of 220mAh, to supply, with a 3V voltage, the Real Time Clock and

CMOS memory mounted on the COM Express module.

The batteries should only be replaced with devices of the same type. Always check the orientation before inserting and make sure that they are aligned correctly and

are not damaged or leaking.

Never allow the batteries to become short-circuited during handling. Batteries supplied with C79 board are compliant to requirements of European Directive

2006/66/EC regarding batteries and accumulators. When putting out of order C79 board, remove the batteries from the board in order to collect and dispose them

according to the requirement of the same European Directive above mentioned. Even when replacing the batteries, the disposal has to be made according to these

requirements.

It is possible to monitor the consumption on VCC_RTC battery by removing the jumper from CN6

connector and inserting a tester in series set as ammeter between 2-3 position.

Alternatively, the consumption on VCC_RTC can be monitored by inserting a tester set as ammeter

between pin 1 and 2 of RTC Battery Sense Connector CN5.

CN5 is a dedicated 2 position Wire to Board Terminal Block, type Wurth p/n 691210910002

RTC battery can be enabled/disabled using dedicated jumper on CN6, which is a standard pin header, P2.54mm, 1x3 pin.

Smart Battery SM Bus Connector CN29

Signal

SB_SMB_CLK

SMB_ALERT#

SB_SMB_DAT

GND

CN6 position

RTC Battery enable

1-2

Battery disconnected

2-3

Battery connected

NO jumper

Current measurement

CAUTION: handling batteries incorrectly or replacing with not-approved devices may present a risk of fire or explosion.

CCOMe-C79

The RTC battery voltage level is monitored through a comparator inside the board. Battery

low status signal (BATLOW#) is carried to COM-express module to be managed.

JP1 is a 2-way jumper to enable/disable this indicator.

Power Rails meanings

In all the tables contained in this manual, Power rails are named with the following meaning:

_RUN: Switched voltages, i.e. power rails that are active only when the board is in ACPI s S0 (Working) state. Examples: +3.3V_RUN, +5V_RUN.

_ALW: Always-on voltages, i.e. power rails that are active both in ACPIs S0 (Working), S3 (Standby) and S5 (Soft Off) state. Examples: +5V_ALW, +3.3V_ALW.

JP1 position