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:
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
7
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CX-MB-EVA2 User's Manual General Information
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
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CX-MB-EVA2 User's Manual Introduction
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
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CX-MB-EVA2 User's Manual Introduction
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.
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CX-MB-EVA2 User's Manual Introduction
BACK
PCI
e
Line
Line
Head
Trans
-
IO
40 pin
84
Line
Center
44 pin
2.3 Block Diagram
VGA TVout
HP
Front
Side
MIC
IN
MIC
OUT
AC97 - CODEC
Phone
LAN
LFE
former
IN
GPIO EEPROM
HDA - CODEC
GPIO I²C MDI AC-Link TV-out VGA PCIe-G A B
COM Express Modul
LPC
SMBus
PCI
PCIe USB SATA IDE
PORT80
EEPROM
Connector
Extension Card
LPC Slot
HW
Monitor
6
PS/2
COM1
COM2
SMB
Super IO
PS/2 COM1 COM2 IrDa HW
Monitor
Fan
4x
PCI Slot
6x
PCIe Slot
COM Express Base Board
Illustration 1 Block Diagram Base Board
Graphics
8x
USB
4x
SATA
LVDS
LCD
JILI40
JILI
JILI
EEPROM
I²C
LIGHT
Connector
Connector
CF
Slot
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CX-MB-EVA2 User's Manual Introduction
X2
X13
X14
X15
X16
X21
X20
X19
X34
X36
X37
X38
X42
X43
X47
X52
X53
X39
X1
Reset
S3 S4 S5
Lane RV
2.4 Positioning of the Connectors
1 3
10 12
JP1101
X40
1
IRDA
X35
1
GPIO
Beeper
Fan
1
SW1103
3
2
J6
1
1
X48
LPC
POST Code
1
Power
1
Lattice
Programming
Interface
POST
Code
Display
X27
1
X51
SATA CH2/CH0
COM1/
COM2
OnBoard
BIOS-Flash
Socket
Audio
HDA
CF
Socket
1
J0802
X24
X23
1
I/O
1
X22
IDE
X45
1
J1301
2 3 4 5 6
J1302
J0701
COM Express
Module
Connector
Audio AC97
IDC
X18
X41
Keyb./
Mouse
TV out
1
1
Fan
X17
1
VGA
X29
J0504
X30
USB
X31 X32
Illustration 2 Positioning of the Connectors
X25
1
X49
SW0611
X12
SATA CH3/CH1
X28
Battery
X26
J1101
J0203
1
4 2 3
J1003
X33
LAN
X50
X6
PCI - Express
X11
X7
X8
J1303
1
X3
1
PCI
X9
J0306
2
1
3
X10
1
JP0601
X5
X46
1
2
1
J5
2
4
3 5
JILI40
1
3
6
Power
JILI
LVDS
1
Back-
light
ATX
1
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CX-MB-EVA2 User's Manual Mechanics
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
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CX-MB-EVA2 User's Manual Hardware
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.
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.
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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CX-MB-EVA2 User's Manual Hardware
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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CX-MB-EVA2 User's Manual Hardware
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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CX-MB-EVA2 User's Manual Hardware
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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CX-MB-EVA2 User's Manual Hardware
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.
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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CX-MB-EVA2 User's Manual Hardware
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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CX-MB-EVA2 User's Manual Hardware
4.9.2 HDA codec
Specification:
References: X39
Connector: Foxconn JAS331-H1G2-4F
Pinout: Refer to Table 12
Con colour Function
1 light blue
2 lime Line Out
3 pink Mikrofon
4 orange Center / LFE
5 black Surround
6 grey Side
Table 17 Pinout LineOut
Line In
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.
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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CX-MB-EVA2 User's Manual Hardware
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.
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.
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.
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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CX-MB-EVA2 User's Manual Hardware
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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CX-MB-EVA2 User's Manual Hardware
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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CX-MB-EVA2 User's Manual Hardware
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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CX-MB-EVA2 User's Manual Hardware
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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CX-MB-EVA2 User's Manual Hardware
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
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)
Function Pin HP-POD Function
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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CX-MB-EVA2 User's Manual Hardware
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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CX-MB-EVA2 User's Manual Hardware
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