MSC COM EXPRESS CX-MB-EVA2 User Manual

1

CX-MB-EVA2

MSC COM Express

TM

Evaluation Board

Rev. 1.0

January 14 , 2009

User’s Manual

Preface

Copyright Notice

Copyright © 2008 MSC Vertriebs GmbH. All rights reserved.

Copying of this document, and giving it to others and the use or communication of the
contents thereof, are forbidden without express authority. Offenders are liable to the payment
of damages.

All rights are reserved in the event of the grant of a patent or the registration of a utility model
or design.

Important Information

This documentation is intended for qualified audience only. The product described herein is
not an end user product. It was developed and manufactured for further processing by
trained personnel.

Disclaimer

Although this document has been generated with the utmost care no warranty or liability for
correctness or suitability for any particular purpose is implied. The information in this
document is provided “as is” and is subject to change without notice.

EMC Rules

This unit has to be installed in a shielded housing. If not installed in a properly shielded
enclosure, and used in accordance with the instruction manual, this product may cause radio
interference in which case the user may be required to take adequate measures at his or her
own expense.

Trademarks

All used product names, logos or trademarks are property of their respective owners.

Certification

MSC Vertriebs GmbH is certified according to DIN EN ISO 9001:2000 standards.

Life-Cycle-Management

MSC products are developed and manufactured according to high quality standards. Our life­cycle-management assures long term availability through permanent product maintenance.
Technically necessary changes and improvements are introduced if applicable. A product­change-notification and end-of-life management process assures early information of our
customers.

Product Support

MSC engineers and technicians are committed to provide support to our customers
whenever needed.
Before contacting Technical Support of MSC Vertriebs GmbH, please consult the respective
pages on our web site at www.msc-ge.com/support-boards for the latest documentation,
drivers and software downloads.
If the information provided there does not solve your problem, please contact our Technical
Support:

Email:

[e-mail]

Phone: [phone]

CX-MB-EVA2 User's Manual

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Content

1 ........................................................................................................................... 1

Preface ................................................................................................................ 2

1 General Information ...................................................................................... 7

1.1 Revisions and Modifications .................................................................................. 7

1.2 Reference Documents ........................................................................................... 7

1.3 Definitions and Abbreviations ................................................................................ 8

2 Introduction ................................................................................................... 9

2.1 Product Description ............................................................................................... 9

2.2 Features ................................................................................................................ 9

2.3 Block Diagram ......................................................................................................11

2.4 Positioning of the Connectors ...............................................................................12

3 Mechanics ................................................................................................... 13

3.1 Dimensions ..........................................................................................................13

3.2 Assembly notes ....................................................................................................13

4 Hardware ..................................................................................................... 14

4.1 Plug-in Position of the COM Express module .......................................................14

4.2 PCI Slots ..............................................................................................................19

4.3 PCI Express x1 Slots ............................................................................................21

4.4 PCI Express x16 Graphics Slot ............................................................................22

4.5 VGA Interface .......................................................................................................24

4.6 LVDS-Interface .....................................................................................................25

4.6.1 LVDS EEPROM .................................................................................................25

4.6.2 Backlight Inverter Interface ...................................................................................26

4.7 JILI Interface ........................................................................................................27

4.7.1 Standard JILI Connector.......................................................................................27

4.7.2 JILI40 Connector ..................................................................................................27

4.8 TV Out ..................................................................................................................28

4.9 Audio ....................................................................................................................29

4.9.1 AC'97 codec .........................................................................................................29

4.9.1.1 Mono-Microphone .......................................................................................29

4.9.1.2 Stereo LineIn ..............................................................................................30

4.9.1.3 Stereo LineOut ...........................................................................................30

4.9.1.4 Stereo Headphone......................................................................................30

4.9.2 HDA codec ...........................................................................................................31

4.10 IDE Interface .....................................................................................................31

4.10.1 Primary IDE Channel ........................................................................................31

4.10.1.1.1 40-pin IDE interface ..............................................................................31

4.10.1.1.2 44-pin IDE Interface .............................................................................31

4.10.1.1.3 Compact Flash Interface ......................................................................32

4.11 SATA-Interface .................................................................................................32

4.12 USB Topology ...................................................................................................33

4.12.1 USB Power Supply ............................................................................................33

4.13 Ethernet ............................................................................................................34

4.14 LPC Slot ............................................................................................................34

4.15 I/O Connector ....................................................................................................35

4.16 GPIO .................................................................................................................36

4.17 ATX Connector .................................................................................................36

CX-MB-EVA2 User's Manual

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4.18 SuperIO ............................................................................................................37

4.18.1 COM Ports ........................................................................................................37

4.18.2 IrDA...................................................................................................................38

4.18.3 PS/2 ..................................................................................................................38

4.18.4 Fan interface .....................................................................................................39

4.18.5 Intel Fan interface .............................................................................................39

4.18.6 SuperIO Hardware Monitor ...............................................................................39

4.19 SMB Hardware Monitor .....................................................................................40

4.20 Serial EEPROM on SMBus ...............................................................................40

4.21 Serial EEPROM on I2C-Bus ..............................................................................40

4.22 OnBoard BIOS-Flash ........................................................................................41

4.23 POST-Code Display ..........................................................................................41

4.23.1 Lattice Programming Interface ..........................................................................41

4.24 Battery ..............................................................................................................42

4.25 Beeper ..............................................................................................................42

4.26 Power Button ....................................................................................................42

4.27 Reset Button .....................................................................................................42

4.28 Miscellaneous ...................................................................................................43

4.28.1 Resistors for current measuring ........................................................................43

4.28.2 Ground Pins ......................................................................................................43

4.28.3 Sleep State LED Display ...................................................................................43

4.29 Jumper settings .................................................................................................44

4.29.1 BIOS-Flash Jumper J0203 ................................................................................44

4.29.2 PCI I/O voltage Jumper J0306 ..........................................................................44

4.29.3 Backlight power Jumpers JP0601 .....................................................................44

4.29.4 Backlight polarity Jumper J5 .............................................................................44

4.29.5 AC'97 / HDA select Jumper J0701 ....................................................................44

4.29.6 Compact Flash Master Jumper J0802 ...............................................................44

4.29.7 LAN speed mode Jumper J1003 .......................................................................44

4.29.8 Battery Jumper J1101 .......................................................................................45

4.29.9 Super I/O disable Jumper J6 .............................................................................45

4.29.10 SMBus Hardware monitor address Jumper J1303 .........................................45

4.29.11 ATX Funktion Jumper J1301 ..........................................................................45

4.29.12 No ATX Jumper J1302 ...................................................................................45

4.29.13 GPI SMI Jumper JP1101 ...............................................................................45

4.29.14 GPI GPO Jumper X35 ...................................................................................45

4.29.15 Lane RV Jumper J0504 ................................................................................46

DIP-switch settings ........................................................................................................46

4.29.16 LCD EEPROM SW0611 .................................................................................46

4.29.17 SMB EEPROM SW1101 ................................................................................46

4.29.18 I²C EEPROM SW1102 ...................................................................................46

4.29.19 GPI-switch SW1103 .......................................................................................46

CX-MB-EVA2 User's Manual

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Illustrations

Illustration 1 Block Diagram Base Board ........................................................................11

Illustration 2 Positioning of the Connectors...................................................................12

CX-MB-EVA2 User's Manual

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Tables

Table 1 COMExpress Connector Rows A and B ............................................................16

Table 2 COMExpress Connector Rows C and D ............................................................18

Table 3 Assignment PCI slot to connector reference ....................................................19

Table 4 Pin out PCI ...........................................................................................................20

Table 5 Assignment PCIe Lane to connector reference ................................................21

Table 6 Pin out PCI Express ............................................................................................21

Table 6 Pin out PCI Express x16 Graphics Slot .............................................................23

Table 5 Pinout VGA Interface ..........................................................................................24

Table 6 Pinout Single Channel LVDS-Interface ..............................................................25

Table 7 Pinout Backlight ..................................................................................................26

Table 8 Pinout TV-Out ......................................................................................................28

Table 9 Pinout TV-Out Pin header ...................................................................................28

Table 10 Pinout Microphone ............................................................................................29

Table 11 Pinout LineIn .....................................................................................................30

Table 12 Pinout LineOut ..................................................................................................30

Table 13 Pinout Headphone .............................................................................................30

Table 14 Pinout LineOut ..................................................................................................31

Table 15 Assignment SATA Channel to Connector Reference .....................................32

Table 16 Assignment USB Ports .....................................................................................33

Table 17 Pinout LPC-Slot .................................................................................................34

Table 18 Pinout I/O-Connector ........................................................................................35

Table 19 Pinout GPIO connector .....................................................................................36

Table 20 Pinout COM Ports ..............................................................................................37

Table 21 Pinout IrDA ........................................................................................................38

Table 22 Pinout Upper PS/2 Jack ....................................................................................38

Table 23 Pinout Lower PS/2 Jack ....................................................................................38

Table 24 Pinout Fan Interface ..........................................................................................39

Table 25 Pinout Fan Interface ..........................................................................................39

Table 26 Pinout POST Display (HP-POD) ........................................................................41

Table 27 Pinout Lattice Programming Interface .............................................................42

CX-MB-EVA2 User's Manual General Information

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1 General Information

1.1 Revisions and Modifications

Revision

Date Comment

1.0 January 14, 2009 First release

1.2 Reference Documents

[1] COM Express Module Base Specification

COM Express Revision 1.0
Last update: July 10th, 2005

[2] ATX Specification

atx2_21.pdf
Version 2.2
http://www.formfactors.org

[3] PCI Local Bus Specification Rev. 2.1

PCI21.PDF
Last update: June 1st, 1995
http://www.pcisig.com

[4] JILI Specification

Jilim120.pdf
Last update: April 7th, 2003
http://www.jumptec.de/product/data/jili/index.html

[5] Digital Video Interface DVI

dvi_10.pdf
Rev. 1.0 April 2nd, 1999
http://www.ddwg.org/

[6] ATA/ATAPI-6 Specification

d1410r3b.pdf
http://www.t13.org/

[7] CF+ & CF Specification Rev. 3.0

cfspc3_0.pdf
http://www.compactflash.org/

[8] Serial ATA Specification

Serial ATA 1.0 gold.pdf
Last update: August 29th, 2002 Rev.1.0
http://www.sata-io.org/

[9] IEEE Std. 802.3-2002

802.3-2002.pdf
http://www.ieee.org

[10] Universal Bus Specification

usb_20.pdf
Last update: April 27th, 2000
http://www.usb.org

CX-MB-EVA2 User's Manual General Information

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1.3 Definitions and Abbreviations

COM Computer-On-Module
RTC Real Time Clock
ATX Advanced Technology Extended
PCI Peripheral Component Interconnect
IDE Integrated Drive Electronics
EIDE Enhanced Integrated Drive Electronics
CF Compact Flash
ATA Advanced Technology Attachment
ATAPI Advanced Technology Attachment with Packet Interface
SATA Serial Advanced Technology Attachment
USB Universal Serial Bus
PEG PCI express Graphics
GPIO General Purpose Input / Output
LVDS Low Voltage Differential Signaling
JILI JUMPtec Intelligent LVDS Interface
LAN Local Area Network
VGA Video Graphics Array
LPC Low Pin Count
POST Power on self test
SMBus System Management Bus
MDI Medium Dependent Interface

CX-MB-EVA2 User's Manual Introduction

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2 Introduction

2.1 Product Description

COM Express modules are compact, highly integrated Single Board Computers.

Typically a COM Express module consists of CPU, chipset, memory, video controller,
Ethernet controller, BIOS flash and EIDE-, SATA- and USB controller. Interface
controllers (e.g. for PCMCIA) or connectors (e.g. RJ45) are implemented on the base
board on to which the COM Express module can be mounted via one or two 220-pin
SMD-connectors. Beside the power supply also signals for PCIe- and PCI-bus, EIDE,
SATA, USB, LPC etc. are present on these connectors.

The type of interfaces that is led from the COM Express module to the base board
depends on the type of module that is used. The COM Express specification defines five
different types which differ in number and pin assignment of the module connectors.

Thanks to the standardized mechanics and interfaces the system can be scaled
arbitrarily. In spite of a modular concept the systems design is very flat and compact.

COM Express modules require a base-board for successful operation.

The base board described below acts as an evaluation board for the COM Express
modules.

2.2 Features

 Interface for COM Express module type 2 up to extended form factor

 PCI slots 32Bit v2.1

 6 PCIe slots

 PCIe x16 graphics / SDVO

 VGA interface

 LVDS interface

 Standard JILI / JILI40

 TV-Out

 AC'97-Link

o LineIn

o LineOut

o Headphone

o Microphone

 High Definition Audio

o LineIn

o LineOut

o Microphone

o Center / LFE

o Surround

o Side

CX-MB-EVA2 User's Manual Introduction

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 40 pin IDE interface Ultra ATA-100/66/33

 44 pin IDE interface Ultra ATA-100/66/33

 Compact flash interface Spec. v3.0

 SATA channels up to 150MB/s

 8 USB2.0 root hub interfaces

 LAN interface max. 1GBit

 LPC slot

 Pin header for GPIOs

 SuperIO W83627THF

o 2x PS/2

o 2x COM

o 1x IrDA

o fan interfaces

 Hardware monitoring

 Power supply via ATX connector

 POST display on LPC

 Serial EEPROM on I²C-Bus

 Serial EEPROM on SMBus

 On-board BIOS Flash

 Beeper

Note : Support for all above features will also depend on the COM Express module being

used. Not all modules support the maximum number of interfaces.

CX-MB-EVA2 User's Manual Introduction

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LCD

JILI40

JILI

JILI

EEPROM

BACK

LIGHT

PCI

e

Graphics

VGA TVout

Line

IN

Line

OUT

MIC

Head

Phone

AC97 - CODEC

GPIO EEPROM

LAN

Trans

-

former

Super IO

PS/2 COM1 COM2 IrDa HW

Monitor

Fan

PORT80

LPC Slot

IO

Connector

Extension Card

EEPROM

HW

Monitor

4x

PCI Slot

6x

PCIe Slot

8x

USB

4x

SATA

CF
Slot

40 pin

Connector

PS/2

COM1

COM2

SMB

6

8 4

LPC

SMBus

PCI

PCIe USB SATA IDE

GPIO I²C MDI AC-Link TV-out VGA PCIe-G A B

LVDS

I²C

COM Express Modul

HDA - CODEC

Line

IN

Front

MIC

Center

LFE

HP

Side

COM Express Base Board

44 pin

Connector

2.3 Block Diagram

Illustration 1 Block Diagram Base Board

CX-MB-EVA2 User's Manual Introduction

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2.4 Positioning of the Connectors

Illustration 2 Positioning of the Connectors

1

1

1

1

1

1

1

1

1

1

Back-

light

X2

X3

X5

X6

X7

X8

X9

X10

X11

X12

X13

X14

X15

X16

X17

X21

X20

X19

X18

X22

X23

X24

X25

X26

X27

X28

X29

X30

X31 X32

X33

X34

X35

X36

X37

X38

X41

X40

X42

X43

X45

X47

X46

X51

X49

X50

X52

X53

X39

X48

X1

CF
Socket

USB

Audio AC97

Audio
HDA

Keyb./

Mouse

PCI

Fan

TV out

ATX

Power

IDE

IDC

I/O

IRDA

Fan

LPC

GPIO

Lattice

Programming

Interface

PCI - Express

COM Express

Module

Connector

SATA CH2/CH0

SATA CH3/CH1

JILI40

JILI

LVDS

SW0611

SW1103

Beeper

Battery

Power

Reset

S3 S4 S5

POST Code

OnBoard

BIOS-Flash

Socket

J0306

J0203

JP1101

JP0601

J5

J0701

J0802

J1003

J1101

J6

J1303

J1301

J1302

1

1

1

1

1

1

1

1

1

1

1

POST
Code

Display

2

2

3

3 5

4

6

2

3

4 2 3

2 3 4 5 6

1

3
2
1

1 3

10 12

VGA

COM1/
COM2

LAN

1

1

1

J0504

Lane RV

CX-MB-EVA2 User's Manual Mechanics

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3 Mechanics

3.1 Dimensions

Dimension: 254.5 mm x 36.8 mm

Width: 1.6 mm + /-10%

Tolerances of the drill holes: +/- 0.1mm in X and Y

Tolerances of the diameter: + 0.1 mm

3.2 Assembly notes

CXC: 4x M2.5 x 5mm bolt

CXB: 5x M2.5 x 5mm bolt

CXE: 7x M2.5 x 5mm bolt

CX-MB-EVA2 User's Manual Hardware

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4 Hardware

4.1 Plug-in Position of the COM Express module

Sockets for a COM Express type 2 module is available on the base board.

Following form factors are supported:

 Compact module (Industry Consortium form-factor)

 Basic module

 Extended module

Specification:

 Reference: X1

 Connector: AMP / Tyco 3-1827233-6

0.5 mm pitch free height 440 pin 5H plug (combination of two 220pin plugs)

 Pinout: Refer to COM Express specification for type 2 module

[1]

Row A Row B
A1 GND B1 GND
A2 GBE0_MDI3- B2 GBE0_ACT#
A3 GBE0_MDI3+ B3 LPC_FRAME#
A4 GBE0_LINK100# B4 LPC_AD0
A5 GBE0_LINK1000# B5 LPC_AD1
A6 GBE0_MDI2- B6 LPC_AD2
A7 GBE0_MDI2+ B7 LPC_AD3
A8 GBE0_LINK# B8 LPC_DRQ0#
A9 GBE0_MDI1- B9 LPC_DRQ1#
A10 GBE0_MDI1+ B10 LPC_CLK
A11 GND B11 GND
A12 GBE0_MDI0- B12 PWRBTN#
A13 GBE0_MDI0+ B13 SMB_CK
A14 GBE0_CTREF B14 SMB_DAT
A15 SUS_S3# B15 SMB_ALERT#
A16 SATA0_TX+ B16 SATA1_TX+
A17 SATA0_TX- B17 SATA1_TX­A18 SUS_S4# B18 SUS_STAT#
A19 SATA0_RX+ B19 SATA1_RX+
A20 SATA0_RX- B20 SATA1_RX­A21 GND B21 GND
A22 SATA2_TX+ B22 SATA3_TX+
A23 SATA2_TX- B23 SATA3_TX­A24 SUS_S5# B24 PWR_OK
A25 SATA2_RX+ B25 SATA3_RX+
A26 SATA2_RX- B26 SATA3_RX­A27 BATLOW# B27 WDT
A28 ATA_ACT# B28 AC_SDIN2
A29 AC_SYNC B29 AC_SDIN1

CX-MB-EVA2 User's Manual Hardware

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A30 AC_RST# B30 AC_SDIN0
A31 GND B31 GND
A31 GND B31 GND
A32 AC_BITCLK B32 SPKR
A33 AC_SDOUT B33 I2C_CK
A34 BIOS_DISABLE# B34 I2C_DAT
A35 THRMTRIP# B35 THRM#
A36 USB6- B36 USB7­A37 USB6+ B37 USB7+
A38 USB_6_7_OC# B38 USB_4_5_OC#
A39 USB4- B39 USB5­A40 USB4+ B40 USB5+
A41 GND B41 GND
A42 USB2- B42 USB3­A43 USB2+ B43 USB3+
A44 USB_2_3_OC# B44 USB_0_1_OC#
A45 USB0- B45 USB1­A46 USB0+ B46 USB1+
A47 VCC_RTC B47 EXCD1_PERST#
A48 EXCD0_PERST# B48 EXCD1_CPPE#
A49 EXCD0_CPPE# B49 SYS_RESET#
A50 LPC_SERIRQ B50 CB_RESET#
A51 GND B51 GND
A52 PCIE_TX5+ B52 PCIE_RX5+
A53 PCIE_TX5- B53 PCIE_RX5­A54 GPI0 B54 GPO1
A55 PCIE_TX4+ B55 PCIE_RX4+
A56 PCIE_TX4- B56 PCIE_RX4­A57 GND B57 GPO2
A58 PCIE_TX3+ B58 PCIE_RX3+
A59 PCIE_TX3- B59 PCIE_RX3­A60 GND B60 GND
A61 PCIE_TX2+ B61 PCIE_RX2+
A62 PCIE_TX2- B62 PCIE_RX2­A63 GPI1 B63 GPO3
A64 PCIE_TX1+ B64 PCIE_RX1+
A65 PCIE_TX1- B65 PCIE_RX1­A66 GND B66 WAKE0#
A67 GPI2 B67 WAKE1#
A68 PCIE_TX0+ B68 PCIE_RX0+
A69 PCIE_TX0- B69 PCIE_RX0­A70 GND B70 GND
A71 LVDS_A0+ B71 LVDS_B0+
A72 LVDS_A0- B72 LVDS_B0­A73 LVDS_A1+ B73 LVDS_B1+
A74 LVDS_A1- B74 LVDS_B1­A75 LVDS_A2+ B75 LVDS_B2+
A76 LVDS_A2- B76 LVDS_B2­A77 LVDS_VDD_EN B77 LVDS_B3+
A78 LVDS_A3+ B78 LVDS_B3­A79 LVDS_A3- B79 LVDS_BKLT_EN
A80 GND B80 GND
A81 LVDS_A_CK+ B81 LVDS_B_CK+
A82 LVDS_A_CK- B82 LVDS_B_CK-

CX-MB-EVA2 User's Manual Hardware

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A83 LVDS_I2C_CK B83 LVDS_BKLT_CTRL
A84 LVDS_I2C_DAT B84 VCC_5V_SBY
A85 GPI3 B85 VCC_5V_SBY
A86 KBD_RST# B86 VCC_5V_SBY
A87 KBD_A20GATE B87 VCC_5V_SBY
A88 PCIE0_CK_REF+ B88 RSVD
A89 PCIE0_CK_REF- B89 VGA_RED
A90 GND B90 GND
A91 RSVD B91 VGA_GRN
A92 RSVD B92 VGA_BLU
A93 GPO0 B93 VGA_HSYNC
A94 RSVD B94 VGA_VSYNC
A95 RSVD B95 VGA_I2C_CK
A96 GND B96 VGA_I2C_DAT
A97 VCC_12V B97 TV_DAC_A
A98 VCC_12V B98 TV_DAC_B
A99 VCC_12V B99 TV_DAC_C
A100 GND B100 GND
A101 VCC_12V B101 VCC_12V
A102 VCC_12V B102 VCC_12V
A103 VCC_12V B103 VCC_12V
A104 VCC_12V B104 VCC_12V
A105 VCC_12V B105 VCC_12V
A106 VCC_12V B106 VCC_12V
A107 VCC_12V B107 VCC_12V
A108 VCC_12V B108 VCC_12V
A109 VCC_12V B109 VCC_12V
A110 GND B110 GND

Table 1 COMExpress Connector Rows A and B

Row C Row D
C1 GND D1 GND
C2 IDE_D7 D2 IDE_D5
C3 IDE_D6 D3 IDE_D10
C4 IDE_D3 D4 IDE_D11
C5 IDE_D15 D5 IDE_D12
C6 IDE_D8 D6 IDE_D4
C7 IDE_D9 D7 IDE_D0
C8 IDE_D2 D8 IDE_REQ
C9 IDE_D13 D9 IDE_IOW#
C10 IDE_D1 D10 IDE_ACK#
C11 GND D11 GND
C12 IDE_D14 D12 IDE_IRQ
C13 IDE_IORDY D13 IDE_A0
C14 IDE_IOR# D14 IDE_A1
C15 PCI_PME# D15 IDE_A2
C16 PCI_GNT2# D16 IDE_CS1#
C17 PCI_REQ2# D17 IDE_CS3#
C18 PCI_GNT1# D18 IDE_RESET#
C19 PCI_REQ1# D19 PCI_GNT3#
C20 PCI_GNT0# D20 PCI_REQ3#
C21 GND D21 GND
C22 PCI_REQ0# D22 PCI_AD1

CX-MB-EVA2 User's Manual Hardware

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C23 PCI_RESET# D23 PCI_AD3
C24 PCI_AD0 D24 PCI_AD5
C25 PCI_AD2 D25 PCI_AD7
C26 PCI_AD4 D26 PCI_C/BE0#
C27 PCI_AD6 D27 PCI_AD9
C28 PCI_AD8 D28 PCI_AD11
C29 PCI_AD10 D29 PCI_AD13
C30 PCI_AD12 D30 PCI_AD15
C31 GND D31 GND
C31 GND D31 GND
C32 PCI_AD14 D32 PCI_PAR
C33 PCI_C/BE1# D33 PCI_SERR#
C34 PCI_PERR# D34 PCI_STOP#
C35 PCI_LOCK# D35 PCI_TRDY#
C36 PCI_DEVSEL# D36 PCI_FRAME#
C37 PCI_IRDY# D37 PCI_AD16
C38 PCI_C/BE2# D38 PCI_AD18
C39 PCI_AD17 D39 PCI_AD20
C40 PCI_AD19 D40 PCI_AD22
C41 GND D41 GND
C42 PCI_AD21 D42 PCI_AD24
C43 PCI_AD23 D43 PCI_AD26
C44 PCI_C/BE3# D44 PCI_AD28
C45 PCI_AD25 D45 PCI_AD30
C46 PCI_AD27 D46 PCI_IRQC#
C47 PCI_AD29 D47 PCI_IRQD#
C48 PCI_AD31 D48 PCI_CLKRUN#
C49 PCI_IRQA# D49 PCI_M66EN
C50 PCI_IRQB# D50 PCI_CLK
C51 GND D51 GND
C52 PEG_RX0+ D52 PEG_TX0+
C53 PEG_RX0- D53 PEG_TX0­C54 TYPE0# D54 PEG_LANE_RV#
C55 PEG_RX1+ D55 PEG_TX1+
C56 PEG_RX1- D56 PEG_TX1­C57 TYPE1# D57 TYPE2#
C58 PEG_RX2+ D58 PEG_TX2+
C59 PEG_RX2- D59 PEG_TX2­C60 GND D60 GND
C61 PEG_RX3+ D61 PEG_TX3+
C62 PEG_RX3- D62 PEG_TX3­C63 RSVD D63 RSVD
C64 RSVD D64 RSVD
C65 PEG_RX4+ D65 PEG_TX4+
C66 PEG_RX4- D66 PEG_TX4­C67 RSVD D67 GND
C68 PEG_RX5+ D68 PEG_TX5+
C69 PEG_RX5- D69 PEG_TX5­C70 GND D70 GND
C71 PEG_RX6+ D71 PEG_TX6+
C72 PEG_RX6- D72 PEG_TX6­C73 SDVO_DATA D73 SDVO_CLK
C74 PEG_RX7+ D74 PEG_TX7+
C75 PEG_RX7- D75 PEG_TX7-

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C76 GND D76 GND
C77 RSVD D77 IDE_CBLID#
C78 PEG_RX8+ D78 PEG_TX8+
C79 PEG_RX8- D79 PEG_TX8­C80 GND D80 GND
C81 PEG_RX9+ D81 PEG_TX9+
C82 PEG_RX9- D82 PEG_TX9­C83 RSVD D83 RSVD
C84 GND D84 GND
C85 PEG_RX10+ D85 PEG_TX10+
C86 PEG_RX10- D86 PEG_TX10­C87 GND D87 GND
C88 PEG_RX11+ D88 PEG_TX11+
C89 PEG_RX11- D89 PEG_TX11­C90 GND D90 GND
C91 PEG_RX12+ D91 PEG_TX12+
C92 PEG_RX12- D92 PEG_TX12­C93 GND D93 GND
C94 PEG_RX13+ D94 PEG_TX13+
C95 PEG_RX13- D95 PEG_TX13­C96 GND D96 GND
C97 RSVD D97 PEG_ENABLE#
C98 PEG_RX14+ D98 PEG_TX14+
C99 PEG_RX14- D99 PEG_TX14­C100 GND D100 GND
C101 PEG_RX15+ D101 PEG_TX15+
C102 PEG_RX15- D102 PEG_TX15­C103 GND D103 GND
C104 VCC_12V D104 VCC_12V
C105 VCC_12V D105 VCC_12V
C106 VCC_12V D106 VCC_12V
C107 VCC_12V D107 VCC_12V
C108 VCC_12V D108 VCC_12V
C109 VCC_12V D109 VCC_12V
C110 GND D110 GND

Table 2 COMExpress Connector Rows C and D

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4.2 PCI Slots

Four 32-bit PCI slots are provided according to PCI specification v2.1.

The signal assignment for slot 0, slot 1, slot 2 and slot 3 is defined in the COM Express
specification.

 INTA#, INTB#, INTC# and INTD#

 REQ[0..3]#

 GNT[0..3]#

 IDSEL

PCI Slot Reference
PCI Slot 0 X2
PCI Slot 1 X3
PCI Slot 2 X4
PCI Slot 3 X5

Table 3 Assignment PCI slot to connector reference

Specification:

 References: X2 - X5

 Connector: AMP / Tyco 5145154-4

 Pinout: Refer to PCI specification V2.1 [3]

Pin Signal Pin Signal
A1 TRST# B1 -12V
A2 12V B2 TCK
A3 TMS B3 GND
A4 TDI B4 TDO
A5 5V B5 5V
A6 INTA# B6 5V
A7 INTC# B7 INTB#
A8 5V B8 INTD#
A9 RSVD B9 PRSNT1#
A10 5V B10 RSVD
A11 RSVD B11 PRSNT2#
A12 GND B12 GND
A13 GND B13 GND
A14 3V3 B14 RSVD
A15 RST# B15 GND
A16 5V B16 CLK
A17 GNT# B17 GND
A18 GND B18 REQ#
A19 PME# B19 5V
A20 AD30 B20 AD31
A21 3V3 B21 AD29

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A22 AD28 B22 GND
A23 AD26 B23 AD27
A24 GND B24 AD25
A25 AD24 B25 3V3
A26 IDSEL B26 C/BE3#
A27 3V3 B27 AD23
A28 AD22 B28 GND
A29 AD20 B29 AD21
A30 GND B30 AD19
A31 AD18 B31 3V3
A32 AD16 B32 AD17
A33 3V3 B33 C/BE2#
A34 FRAME# B34 GND
A35 GND B35 IRDY#
A36 TRDY# B36 3V3
A37 GND B37 DEVSEL#
A38 STOP# B38 GND
A39 3V3 B39 LOCK#
A40 SMBCLK B40 PERR#
A41 SMBDAT B41 3V3
A42 GND B42 SERR#
A43 PAR B43 3V3
A44 AD15 B44 C/BE1#
A45 3V3 B45 AD14
A46 AD13 B46 GND
A47 AD11 B47 AD12
A48 GND B48 AD10
A49 AD09 B49 GND
Key
A52 C/BE0# B52 AD08
A53 3V3 B53 AD07
A54 AD06 B54 3V3
A55 AD04 B55 AD05
A56 GND B56 AD03
A57 AD02 B57 GND
A58 AD00 B58 AD01
A59 5V B59 5V
A60 REQ64# B60 ACK64#
A61 5V B61 5V
A62 5V B62 5V

Table 4 Pin out PCI

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4.3 PCI Express x1 Slots

One PCIe x1 slot is assigned to each of the 6 PCIe lanes of the COM Express module.

Note: The order of the connectors has changed on the new layout. Now X6 is near PEG
slot.

Note : The number of PCIe lanes available will depend on the COM Express module
used – not all modules can support 6 PCIe lanes.

PCIe Lane References
PCIe Lane 0 X6
PCIe Lane 1 X7
PCIe Lane 2 X8
PCIe Lane 3 X9
PCIe Lane 4 X10
PCIe Lane 5 X11

Table 5 Assignment PCIe Lane to connector reference

Specification:

 References: X6 - X11

 Connector: AMP / Tyco 4-1612163-1

 Pinout: Refer to PCI express specification

Pin Signal Pin Signal
A1 PRSNT1# B1 12V
A2 12V B2 12V
A3 12V B3 12V
A4 GND B4 GND
A5 JTAG_TCK B5 SMB_CLK
A6 JTAG_TDI B6 SMB_DAT
A7 JTAG_TDO B7 GND
A8 JTAG_TMS B8 3V3
A9 3V3 B9 JTAG_RST#
A10 3V3 B10 3V3_AUX
A11 PE_RST# B11 WAKE#
KEY
A12 GND B12 RSVD
A13 REFCLK+ B13 GND
A14 REFCLK- B14 PET_p0
A15 GND B15 PET_n0
A16 PER_p0 B16 GND
A17 PER_n0 B17 PRSNT2#
A18 GND B18 GND

Table 6 Pin out PCI Express

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4.4 PCI Express x16 Graphics Slot

A PCIe x16 graphics slot is provided for insertion of PEG graphics cards.

Depending on the chipset the PCIe signals are multiplexed with SDVO signals, thus
SDVO modules can be run in this slot as well. SDVO or PCIe graphics will be activated
automatically via PullUps of the SDVO I²C interface on the SDVO module.

Specification:

 References: X12

 Connector: AMP / Tyco 4-1612163-4

 Pinout: Refer to PCI express specification

Pin Signal Pin Signal
A1 PRSNT1# B1 12V
A2 12V B2 12V
A3 12V B3 12V
A4 GND B4 GND
A5 JTAG_TCK B5 SMB_CLK
A6 JTAG_TDI B6 SMB_DAT
A7 JTAG_TDO B7 GND
A8 JTAG_TMS B8 3V3
A9 3V3 B9 JTAG_RST#
A10 3V3 B10 3V3_AUX
A11 PE_RST# B11 WAKE#
KEY
A12 GND B12 RSVD
A13 REFCLK+ B13 GND
A14 REFCLK- B14 PET_p0
A15 GND B15 PET_n0
A16 PER_p0 B16 GND
A17 PER_n0 B17 PRSNT2#
A18 GND B18 GND
A19 RSVD B19 PET_p1
A20 GND B20 PET_n1
A21 PER_p1 B21 GND
A22 PER_n1 B22 GND
A23 GND B23 PET_p2
A24 GND B24 PET_n2
A25 PER_p2 B25 GND
A26 PER_n2 B26 GND
A27 GND B27 PET_p3
A28 GND B28 PET_n3
A29 PER_p3 B29 GND
A30 PER_n3 B30 RSVD
A31 GND B31 PRSNT2#
A32 RSVD B32 GND
A33 RSVD B33 PET_p4

1

A34 GND B34 PET_n4

1

A35 PER_p4

1

B35 GND

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A36 PER_n4

1

B36 GND

A37 GND B37 PET_p5

1

A38 GND B38 PET_n5

1

A39 PER_p5

1

B39 GND

A40 PER_n5

1

B40 GND

A41 GND B41 PET_p6

1

A42 GND B42 PET_n6

1

A43 PER_p6

1

B43 GND

A44 PER_n6

1

B44 GND

A45 GND B45 PET_p7

1

A46 GND B46 PET_n7

1

A47 PER_p7

1

B47 GND

A48 PER_n7

1

B48 PRSNT2#
A49 GND B49 GND
A50 RSVD B50 PET_p8

1

A51 GND B51 PET_n8

1

A52 PER_p8

1

B52 GND
A53 PER_n8

1

B53 GND
A54 GND B54 PET_p9

1

A55 GND B55 PET_n9

1

A56 PER_p9

1

B56 GND
A57 PER_n9

1

B57 GND
A58 GND B58 PET_p10

1

A59 GND B59 PET_n10

1

A60 PER_p10

1

B60 GND

A61 PER_n10

1

B61 GND

A62 GND B62 PET_p11

1

A63 GND B63 PET_n11

1

A64 PER_p11

1

B64 GND

A65 PER_n11

1

B65 GND

A66 GND B66 PET_p12

1

A67 GND B67 PET_n12

1

A68 PER_p12

1

B68 GND

A69 PER_n12

1

B69 GND

A70 GND B70 PET_p13

1

A71 GND B71 PET_n13

1

A72 PER_p13

1

B72 GND

A73 PER_n13

1

B73 GND

A74 GND B74 PET_p14

1

A75 GND B75 PET_n14

1

A76 PER_p14

1

B76 GND

A77 PER_n14

1

B77 GND

A78 GND B78 PET_p15

1

A79 GND B79 PET_n15

1

A80 PER_p15

1

B80 GND

A81 PER_n15

1

B81 PRSNT2#

A82 GND B82 RSVD

Table 7 Pin out PCI Express x16 Graphics Slot

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4.5 VGA Interface

An analog display can be connected via a VGA (VESA DDC) interface.

Specification:

 References: X13

 Connector: Suyin 7507S-15G5T-A

 Pinout: Refer to Table 3

Pin Signal name Function
1 RED Signal red
2 GREEN Signal green
3 BLUE Signal blue
4 RSVD reserved
5 GND Ground digital
6 RGND Ground red
7 GGND Ground green
8 BGND Ground blue
9 +5V +5V VDC
10 SGND Ground Synchronisation
11 ID0 Monitor ID Bit 0 (optional)
12 SDA DDC Data
13 HSYNC Horizontal Sync.
14 VSYNC Vertical Sync.
15 SCL DDC Clock

Table 8 Pinout VGA Interface

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4.6 LVDS-Interface

LCDs can be connected via a single channel LVDS interface:

Specification:

 References: X14

 Connector: Hirose DF19G-20P-1H

 Pinout: Refer to Table 4

Pin 20 can be configured via 0 Ohm resistors to “OPEN” or “GND”

Pin Signal name Function
1 VDD Power Supply: +3.3V
2 VDD Power Supply: +3.3V
3 VSS Ground
4 VSS Ground
5 LVDS_A0- LVDS Negative data signal (-)
6 LVDS_A0+ LVDS Positive data signal (+)
7 VSS Ground
8 LVDS_A1- LVDS Negative data signal (-)
9 LVDS_A1+ LVDS Positive data signal (+)
10 VSS Ground
11 LVDS_A2- LVDS Negative data signal (-)
12 LVDS_A2+ LVDS Positive data signal (+)
13 VSS Ground
14 LVDS_A_CK- LVDS Negative clock signal (-)
15 LVDS_A_CK+ LVDS Positive clock signal (+)
16 VSS Ground
17 LVDS_A3- LVDS Negative data signal (-)
18 LVDS_A3+ LVDS Positive data signal (+)
19 VSS Ground
20 NC / VSS Reserved / Ground

Table 9 Pinout Single Channel LVDS-Interface

4.6.1 LVDS EEPROM

To store configuration data of the LCD, a serial EEPROM is connected to the signals
LVDS_I2C_CK and LVDS_I2C_DAT.

To avoid conflicts with configuration EEPROMs connected via the JILI connector, this
EEPROM can be assembled optionally.

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4.6.2 Backlight Inverter Interface

The supply voltage of the backlight can be adjusted with jumper JP0601. The according
position is printed on the PCB.

Jumper J5 should be set according to the backlight inverter used.

If the inverter needs a low active start signal, jumper J5 has to be set to L (pin1
connected to pin2).

If the inverter needs a high active start signal, jumper J5 has to be set to H (pin2
connected to pin3).

Brightness of the backlight inverter is controlled via the LVDS-BKLT-CTRL signal.

The LVDS-BKLT-CTRL signal of the COM Express module is a PWM signal with current
chipsets. This signal is integrated and then limited to the maximum allowable voltage of
the backlight inverter via a voltage divider.

Control voltage: 0...3V

A value of 0V corresponds to maximum brightness.

Specification:

 References: X15

 Connector: Molex (53047-0510) 53261-0590

 Pinout: Refer to Table 5

Pin Signal name Function
1 VCC Power supply backlight
2 GND Ground
3 BLON# Backlight On
4 VCON Brightness control
5 GND Ground

Table 10 Pinout Backlight

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4.7 JILI Interface

4.7.1 Standard JILI Connector

A standard JILI connector can be used alternatively for connection of LCDs.

Both, single and dual channel LCDs, can be connected to the base board via small
adaptor boards.

Specification:

 References: X16

 Connector: Hirose FH12-40S-0.5SV

 Pinout: "standard JILI" according to JILI specification [4]

4.7.2 JILI40 Connector

Any LCD display can be connected via an adaptor board to the JILI40 connector.

Two 24 bit LVDS channels are available on this 40-pin header

Specification:

 References: X46

 Connector: Samtec TMM-120-01-LM-D-SM-P

 Pinout: "JILI40" according to JILI specification [4]

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4.8 TV Out

A TV-OUT connector is implemented for displaying the video signal on a TV set (or the
like). The base board supports the following video signals

 Composite Video

 Component Video (YPbPr)

 S-Video

The type of the video signal is defined by the graphics controller on the COM Express
module.

Specification:

 References: X17

 Connector: AMP 5786766-1

 Pinout: Refer to Table 6

Pin Signal name Composite Component S-Video
1 TV_IRTN_B Ground Ground Ground
2 TV_IRTN_C Ground Ground Ground
3 TV_DACB not used Luminance (Y) Luminance
4 TV_DACC not used Chrominance (Pr) Chrominance
5 TV_DACA CVBS Chrominance (Pb) not used
6 TV_IRTNA Ground Ground Ground
7 RSVD reserved reserved reserved

Table 11 Pinout TV-Out

The signals can be adapted to a different interface with a 10-pin header.

Specification:

 References: X53

 Connector: IDC-M 10pol. THT RM2.54

 Pinout: Refer to Table 7

Pin Signal Pin Signal
1 GND 2 TV_DACA
3 GND 4 TV_DACB
5 GND 6 TV_DACC
7 GND 8 GND
9 GND 10 GND

Table 12 Pinout TV-Out Pin header

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4.9 Audio

An AC’97 codec V2.2 is connected to the AC link of the COM Express module. Footprint
and circuit are compatible to following AC’97 codecs:

 VIA VT1612A

 Realtek ALC650

Following LF signals are provided by the AC’97 codec:

 Mono Microphone

 Stereo LineIn

 Stereo LineOut

 Stereo Headphone

Alternatively a VIA VT1708 HDA codec can be connected to the AC link of the COM
Express module. The audio interface can be selected with Jumper J0701.

Following LF signals are provided by the HDA codec:

 Stereo LineIn

 Stereo LineOut

 Stereo Microfon

 Mono Center / Mono LFE

 Stereo Surround

 Stereo Side

4.9.1 AC'97 codec

4.9.1.1 Mono-Microphone

Bias voltage for capacitor microphones is provided.

Specification:

 References: X18

 Connector: Kycon ST-3000Mono-Microphone

 Pinout: Refer to Table 8

Pin Signal name Function
1 GND Ground
2 MIC_BIAS Bias initial load (ring)
3 MIC NF signal (tip)

Table 13 Pinout Microphone

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4.9.1.2 Stereo LineIn

Specification:

 References: X19

 Connector: Kycon ST-3000

 Pinout: Refer to Table 9Table 14

Pin Signal name Function
1 GND Ground
2 LINEIN_R NF signal right (ring)
3 LINEIN_L NF signal left (tip)

Table 14 Pinout LineIn

4.9.1.3 Stereo LineOut

Specification:

 References: X20

 Connector: Kycon ST-3000

 Pinout: Refer to Table 10

Pin Signal name Function
1 GND Ground
2 LINEOUT_R NF signal right (ring)
3 LINEOUT_L NF signal left (tip)

Table 15 Pinout LineOut

4.9.1.4 Stereo Headphone

Specification:

 References: X21

 Connector: Kycon ST-3000

 Pinout: Refer to Table 11

Pin Signal name Function
1 GND Ground
2 HPOUT_R NF signal right (ring)
3 HPOUT_L NF signal left (tip)

Table 16 Pinout Headphone

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4.9.2 HDA codec

Specification:

 References: X39

 Connector: Foxconn JAS331-H1G2-4F

 Pinout: Refer to Table 12

Con colour Function
1 light blue

Line In
2 lime Line Out
3 pink Mikrofon
4 orange Center / LFE
5 black Surround
6 grey Side

Table 17 Pinout LineOut

4.10 IDE Interface

A standard IDE interface is provided according to ATA/ATAPI, with the controller
supporting at least Ultra-ATA100 with 100 MB/sec data rate. The transfer mode that can
be selected depends on the cable used and which modes are supported by the drives.

Using a ATA100 cable on X22, avoid a master slave combination with X23 or X24.

4.10.1 Primary IDE Channel

4.10.1.1.1 40-pin IDE interface

A 40-pin IDC connector is provided at the primary IDE channel for standard IDE drives.

Specification:

 References: X22

 Connector: FCI 75869-118

 Pinout: Refer to Specification ATA/ATAPI-6 [6, page 400, Table A3]

4.10.1.1.2 44-pin IDE Interface

For connection of 2.5” hard disks, a 44-pin IDC connector is provided at the primary IDE
channel.

Specification:

 References: X23

 Connector: Yamaichi ZP7-44-S-G

 Pinout: Refer to Specification ATA/ATAPI-6 [6, page 412, Table A16]

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4.10.1.1.3 Compact Flash Interface

A socket for compact flash cards, type I/II, is provided at the primary IDE channel.

The compact flash interface supports True IDE mode according to compact flash
specification rev. 3.0.

Inter alia the compact flash specification rev. 3.0 supports the UDMA mode.

Specification:

 References: X24

 Connector: Yamaichi CF050P2-003-10-D2

 Pinout: Refer to specification "CF+ & CF specification rev. 3.0"

[7, page 24, table 4]

4.11 SATA-Interface

Up to four SATA drives can be connected to the SATA interfaces.

Note : Depending on the COM Express module used, not all SATA ports are available.

Every SATA signal connector has its own power supply connector.

SATA Channel References
SATA 0 X25
SATA 1 X26
SATA 2 X27
SATA 3 X28

Table 18 Assignment SATA Channel to Connector Reference

Specification SATA signal connector:

 References: X25 - X28

 Connector: Molex 87713 series

 Pinout: Refer to Specification SATA

[8, page 46, table 3]

Specification Power Supply:

 References: X49 - X52

 Connector: AMP 171825-4

 Pinout: Refer to ATX specification V2.2

[2, "Floppy Drive Power Connector"]

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4.12 USB Topology

Eight USB ports are provided by the COM Express module.

The exact assignment of each port is defined in the following table:

USB-Port References Beschreibung
USB0 X29 External dual connector 1
USB1 X29 External dual connector 1
USB2 X30 External dual connector 2
USB3 X30 External dual connector 2
USB4 X31 External dual connector 3
USB5 X31 External dual connector 3
USB6 X32 External dual connector 4
USB7 X32 External dual connector 4

Table 19 Assignment USB Ports

4.12.1 USB Power Supply

The power supplies are protected by USB power switches. In addition the input voltages
of the USB power switches are protected by resettable fuses.

The USB power switches have the following functions:

 The output current is limited to 500mA per port

 A signal to detect overcurrent is generated for each two ports

 USB0 and USB1 have one common signal to detect overcurrent

 USB2 and USB3 have one common signal to detect overcurrent

 USB4 and USB5 have one common signal to detect overcurrent

 USB6 and USB7 have one common signal to detect overcurrent

Specification:

 References: X29 - X32

 Connector: AMP 787617-2 (Dual USB connector type A)

 Pinout: according to USB specification 2.0

[10]

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4.13 Ethernet

The base board can be connected to a local area network with an Ethernet interface.
The COM Express module already provides MDI signals, so that only the transformer on
the base board required.

The transformer PULSE H 5004 not only supports 10BaseT and 100BaseTX but also
1Gbit.

Specification:

 References: X33

 Connector: AMP 2-406549

 Pinout: Refer to IEEE Std. 802.3

[9, section three, page 225]

4.14 LPC Slot

An LPC slot is available for insertion of LPC expansion boards.

Specification:

 References: X34

 Connector: 36-pin header, 2.54mm

 Pinout: Refer to Table 15

Pin Signal Pin Signal
1 VCC5V 2 VCC5V
3 NC 4 VCC3V3
5 VCC3V3 6 NC
7 VCC3V3_SBY 8 GND
9 GND 10 LPC_RST#
11 GND 12 LPC_LAD0
13 LPC_LAD1 14 LPC_LAD2
15 LPC_LAD3 16 LPC_FRAME#
17 GND 18 LPC_DRQ0
19 GND 20 LPC_CLK
21 GND 22 LPC_PWRDWN
23 GND 24 PME#
25 GND 26 LPC_SMI#
27 GND 28 SERIRQ
29 GND 30 PCI_CLKRUN#
31 GND 32 LPC_DRQ1#
33 GND 34 CPU_RST#
35 GND 36 GND

Table 20 Pinout LPC-Slot

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4.15 I/O Connector

An alternative SuperIO controller can be integrated via a 36-pin connector. In this case
the onboard chip is not populated and a piggy back board with the SuperIO chip is
plugged into the I/O and into the LPC connector.

Specification:

 References: X45

 Connector: CAB 1002-161-036

 Pinout: Refer to Table 16

Pin Signal Pin Signal
1 SMB_CLK 2 SLP_S3#
3 SMB_DAT 4 SLP_S4#
5 KBDAT 6 SLP_S5#
7 KBCLK 8 EXT_THRM#
9 MSDAT 10 SMBALERT#
11 MSCLK 12 NC
13 NC 14 THRMTRIP#
15 NC 16 BATLOW#
17 NC 18 NC
19 NC 20 NC
21 COM1_DCD# 22 COM2_DCD#
23 COM1_RXD 24 COM2_RXD
25 COM1_TXD 26 COM2_TXD
27 COM1_DTR# 28 COM2_DTR#
29 COM1_DSR# 30 COM2_DSR#
31 COM1_RTS# 32 COM2_RTS#
33 COM1_CTS# 34 COM2_CTS#
35 COM1_RI# 36 COM2_RI#

Table 21 Pinout I/O-Connector

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4.16 GPIO

The COM Express module provides four general purpose outputs and four general
purpose inputs.

The GPIs have PullUp resistors and are routed to a dip switch (SW1103). With the dip
switch the GPIs can be connected to ground. The assignment GPI – switch – level is
printed on the PCB.

If the PullUp resistors are not populated, you can switch LPC_SMI# or HWM_SMI# to
GPI0, GPI1, GPI2 or GPI3 with jumper JP1101.

The GPOs are connected to LEDs for optically status display.

Specification:

 References: X35

 Connector: CAB 1002-161-036

 Pinout: Refer to Table 17

Pin Signal Pin Signal
1 GPI0 2 GND
3 GPI1 4 GND
5 GPI2 6 GND
7 GPI3 8 GND
9 GPO0 10 GND
11 GPO1 12 GND
13 GPO2 14 GND
15 GPO3 16 GND

Table 22 Pinout GPIO connector

4.17 ATX Connector

An ATX connector with additional ATX12V connector is available to power the system.

Specification ATX connector:

 References: X36

 Connector: Molex 44206-0007

 Pinout: Refer to ATX specification V2.2

[2]

Specification ATX12V connector:

 References: X37

 Connector: Molex 39-29-9042

 Pinout: Refer to ATX specification V2.2

[2]

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4.18 SuperIO

The Winbond SuperIO W83627THF is integrated on the base board.

Interfaces used by the SuperIO

 2 RS232 interface (function of COM port shared with IrDA interface)

 1 IrDA interface (function shared with COM port)

 PS/2 interface for keyboard and mouse

 2 fan interfaces

 Voltage control

 1 temperature control

4.18.1 COM Ports

Characteristics of the COM ports:

 RS232 standard

 RS232 transceiver ESD protected +/- 15kV

 EMC improved by using EMI filters in the signal lines

Specification:

 References: X38

 Connector: Foxconn DM10151-P71

 Pinout: Refer to Table 18

(COM1: lower Jack, COM2 upper Jack)

Pin Signal name Function
1 DCD# Data Carrier Detect
2 RXD Receive Data
3 TXD Transmit Data
4 DTR# Data Terminal Ready
5 GND Ground
6 DSR# Data Set Ready
7 RTS# Request To Send
8 CTS# Clear To Send
9 RI# Ring Indicator

Table 23 Pinout COM Ports

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4.18.2 IrDA

The connectors of the IrDA interface are designed for commercial IrDA transmitters.

Specification:

 References: X40

 Connector: CAB 1001-161-005

 Pinout: Refer to Table 19Table 24

Pin Signal name Function
1 +5V Power supply
2 NC Not connected
3 IRRX Received data
4 GND Ground
5 IRTX Transmission data

Table 24 Pinout IrDA

4.18.3 PS/2

There is a dual PS/2 connector for PS/2 keyboards and PS/2 mice. The upper jack only
supports PS/2 mice. The pins of the lower jack provide both, signals for PS/2 keyboards
and for PS/2 mice. Keyboards can be connected directly, mice can only be operated
using an according Y-adapter.

Specification:

 References: X41

 Connector: Tyco 84376-1

 Pinout: Refer to Tables 20 and 21

Pin Signal name Function
1 MSDAT Mouse Data
2 NC not connected
3 GND Ground
4 +5V VCC
5 MSCLK Mouse Clock
6 NC not connected

Table 25 Pinout Upper PS/2 Jack

Pin Signal name Function
1 KBDAT Keyboard Data
2 MSDAT Mouse Data
3 GND Ground
4 +5V VCC
5 KBCLK Keyboard Clock
6 MSCLK Mouse Clock

Table 26 Pinout Lower PS/2 Jack

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4.18.4 Fan interface

Two PWM controlled fan interfaces are integrated on the base board. They are located
near the COM Express modul.

Measurement of the tacho signal and control of the rotation speed is done by the
SuperIO.

Specification:

 References: X42 - X43

 Connector: Molex 22-04-1031

Pinout: Refer to Table 27

Pin Signal name Function
1 GND Ground
2 PWM PWM signal
3 TACHO Tacho signal

Table 27 Pinout Fan Interface

4.18.5 Intel Fan interface

A PWM controlled intel fan interface is shared with X43. Don't use both at the same time.

Measurement of the tacho signal and control of the rotation speed is done by the
SuperIO.

Specification:

 References: X48

 Connector: Molex 47053-1000

 Pinout: Refer to Table 23

Pin Signal name Function
1 GND Ground
2 +12V VCC
3 TACHO Tacho signal
4 PWM PWM signal

Table 28 Pinout Fan Interface

4.18.6 SuperIO Hardware Monitor

You can check different voltages and temperatures using the hardware monitor that is
integrated in the SuperIO.

Monitored voltages

 VBAT

 3.3V

 12V

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 5V

Measured temperatures

 Ambient temperature

The temperature is measured with a thermistor.

4.19 SMB Hardware Monitor

In addition to the SuperIO hardware monitor you can also connect a SMBus hardware
monitor. This chip enables you to control different voltages, temperatures and rotation
speeds in legacy-free-designs where the SuperIO is not supported.

Hardware monitor:

 Winbond W83L786R

Controlled voltages

 VBAT

 3.3V

 12V

 5V

Measured temperatures

 Ambient temperature

The temperature is measured with a thermistor.

Fan interface

For evaluation and control of the revolution speeds please refer to chapter 4.18.4.

4.20 Serial EEPROM on SMBus

For testing purposes a serial EEPROM (4kBit) is connected to the SMBus. To avoid
address conflicts, the address can be selected with dip switch SW1101.

4.21 Serial EEPROM on I2C-Bus

For testing purposes a serial EEPROM (4kBit) is connected to the I2C bus. To avoid
address conflicts, the address can be selected with dip switch SW1102.

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4.22 OnBoard BIOS-Flash

There is a PLCC32 socket on the mother board, where an additional firmware hub can
be inserted. To boot from this firmware hub, the firmware hub on the COM Express
module has to be disabled with J0203.

4.23 POST-Code Display

For debugging purposes a POST code display is implemented on the base board, thus
enabling the display of BIOS outputs on IO-port 80h and/or Port 90h.

In addition, these signals are output on a pin header. For protocolling purposes a logic
analyser can be connected here.

The pinout of the output connector X44 corresponds to the pinout of the Hewlett Packard
HP-PODs.

Specification:

 References: X44

 Connector: 20-pin header 2.54mm

Pinout: Refer to Table 29

Pin HP-POD

Function Pin HP-POD Function
1 +5V not used 2 CLK2 LPC_CLK
3 CLK1 not used 4 D15 not used
5 D14 not used 6 D13 Test signal 3
7 D12 Test signal 2 8 D11 Test signal 1
9 D10 Test signal 0 10 D9 not used
11 D8 Strobe 12 D7 Data 7
13 D6 Data 6 14 D5 Data 5
15 D4 Data 4 16 D3 Data 3
17 D2 Data 2 18 D1 Data 1
19 D0 Data 0 20 GND Ground

Table 29 Pinout POST Display (HP-POD)

4.23.1 Lattice Programming Interface

A connector used to program the PLD to decode the POST codes is implemented. To
reprogram the PLD a Lattice programming adapter is required.

Specification:

 References: X47

 Connector: CAB 714-91-164-31-007 (socket)

 Pinout: Refer to Table 30

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Pin Signal name Function
1 VCC Power Supply
2 SDO_TDO Serial Data Out
3 SDI_TDI Serial Data In
4 ISPEN# Programming Enable
5 KEY Keypin
6 MODE_TMS Programming Mode
7 GND Ground
8 SCLK_TCK Serial Clock

Table 30 Pinout Lattice Programming Interface

4.24 Battery

The RTC on the COM Express module is buffered with a socketed battery on the base
board.

In order to clear the CMOS memory, the battery voltage to the COM Express module
can be disconnected via jumper J1101.

Type of battery: 2032

Battery socket: Renata SMTU2032-1

4.25 Beeper

A piezo signal generator is implemented for acoustic signals.

Type: Digisound F/DGX05P

4.26 Power Button

For switching the system on a Power push button has been implemented.

The PWR_BTN# signal is low-active and is connected directly to the corresponding pin
of the COM Express module.

Type: C&K JTP-1230F

4.27 Reset Button

There is a push button for resetting the system.

The RESET# signal is low-active and is connected to the SYS_RESET#- pin of the COM
Express module.

Type: C&K JTP-1230F

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4.28 Miscellaneous

4.28.1 Resistors for current measuring

Resistors are inserted into the power supply lines of the COM Express module, the PCI
express graphics slot as well as into every PCI slot and one PCI express x1 slot. These
can be used for current measurement.

In addition to there is one jumper to measure the current using an external wire loop and
clamp meter.

4.28.2 Ground Pins

There are several ground pins spread over the base board for connection of
measurement equipment.

4.28.3 Sleep State LED Display

The MSC CX-MB EVA2 has 3 LEDs to display the SleepStates.

LED1201 displays status S3.

LED1202 displays status S4.

LED1203 displays status S5.

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4.29 Jumper settings

4.29.1 BIOS-Flash Jumper J0203

To boot from the firmware hub in the PLCC32 socket on the mother board, install J0203.
The firmware hub on the COM Express module will be automatically disabled.

Function J0203
COM Express module flash removed (BIOS disable LED off)
Flash in PLCC32 installed (BIOS disable LED on)

4.29.2 PCI I/O voltage Jumper J0306

PCI VCCIO Pins to close
+3,3 V 2-3
+5,0 V 1-2

If no Jumper is closed, the VCCIO plane is powered by 3V over a diode.

4.29.3 Backlight power Jumpers JP0601

Voltage Pins to close
+12,0 V 5-6
+5,0 V 3-4
+3,3 V 1-2

4.29.4 Backlight polarity Jumper J5

Function Pins to close
LVDS_BKLT_EN 2-3
LVDS_BKLT_EN# 1-2

4.29.5 AC'97 / HDA select Jumper J0701

Function J0701
AC'97 codec removed
HDA codec installed

4.29.6 Compact Flash Master Jumper J0802

Function J0802
Master removed
Slave installed

4.29.7 LAN speed mode Jumper J1003

Function J1003
10 / 100 Mbit all removed
Gigabit 1-2 and 3-4 installed

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4.29.8 Battery Jumper J1101

Function J1101
Battery on installed

4.29.9 Super I/O disable Jumper J6

Function J6
Super I/O enabled 1-2
Super I/O disabled 2-3

4.29.10 SMBus Hardware monitor address Jumper J1303

SMBus Address J1303
0101 1110 removed
0101 1100 installed

4.29.11 ATX Funktion Jumper J1301

PS_ON# from close
PM_SLPS3# 1-2
PM_SLPS4# 3-4
PM_SLPS5# 5-6

4.29.12 No ATX Jumper J1302

Function J1302
no ATX installed

4.29.13 GPI SMI Jumper JP1101

COMX_GPI LPC_SMI#

HWM_SMI#
GPI0 1-2 2-3
GPI1 4-5 5-6
GPI2 7-8 8-9
GPI3 10-11 11-12

4.29.14 GPI GPO Jumper X35

COMX_GPIO GND
GPI0 1-2
GPI1 3-4
GPI2 5-6
GPI3 7-8
GPO0 9-10
GPO1 11-12
GPO2 13-14
GPO3 15-16

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4.29.15 Lane RV Jumper J0504

Function J0504
PEG Lane reverse installed

DIP-switch settings

4.29.16 LCD EEPROM SW0611

Switch on Address
1 A0 high
2 A1 high
3 A2 high
4 -

4.29.17 SMB EEPROM SW1101

Switch on Address
1 A0 high
2 A1 high
3 A2 high
4 -

Do not use address A0 and A4. There can be an address conflict with spd on the
memory slot.

4.29.18 I²C EEPROM SW1102

Switch on Address
1 A0 high
2 A1 high
3 A2 high
4 -

4.29.19 GPI-switch SW1103

COMX_GPO GND
GPI0 1
GPI1 2
GPI2 3
GPI3 4