CompuLab SBC-X270 User manual

SBC-X270
PC/104+ Single Board Computer
Reference Guide

Table of Contents
1. REVISION NOTES....................................................................................................4
2. INTRODUCTION......................................................................................................5
2.1. H IGHLIGHTS .......................................................................................................... 5
2.2. F EATURES .............................................................................................................. 7
2.3. B LOCK D IAGRAM ................................................................................................ 10
3. CONNECTOR DESCRIPTION.............................................................................. 11
3.1. COM-A C ONNECTOR ON F RONT P ANEL (P27).................................................... 11
3.2. COM-C H EADER (P21) ...................................................................................... 11
3.3. USB HEADER & LCD VOLTAGE CONTROL (P15) ................................................ 12
3.4. A UDIO , T OUCHSCREEN , W RITE - PROTECT (P14).................................................. 12
3.5. RTC, A UDIO (P18).............................................................................................. 13
3.6. IDE – H ARD D ISK I NTERFACE (P8, P34)............................................................ 14
3.7. PC C ARD - PCMCIA SLOT (P6) ......................................................................... 15
3.8. PCMCIA P OWER H EADER (E4) ......................................................................... 16
3.9. C ARD B US S LOT (P7) ........................................................................................... 16
3.10. CRT VGA C ONNECTOR ON F RONT P ANEL (P24)............................................ 18
3.11. LCD P ANEL C ONNECTORS (P13, P20) ........................................................... 18
3.12. PC/104 CONNECTOR (P4) ................................................................................ 20
3.13. PC/104+ PCI BUS CONNECTOR (P5)............................................................... 22
3.14. USB D UAL C ONNECTOR ON F RONT P ANEL (U25)........................................... 24
3.15. M INI -USB TYPE AB CONNECTOR (P36).......................................................... 24
3.16. E THERNET P ORT 1 ON F RONT P ANEL (P25)..................................................... 24
3.17. E THERNET P ORT 2 ON F RONT P ANEL (P26)..................................................... 25
3.18. E THERNET FPC C ONNECTOR (P11)................................................................ 25
3.19. CIF - C AMERA I NTERFACE CONNECTOR (P22) ................................................ 26
3.20. A NALOG VIDEO INPUT (P23)............................................................................ 27
3.21. GPIO, COM PORTS AND S PECIAL F UNCTIONS (P16) ...................................... 28
3.22. JTAG CONNECTOR (P19) ................................................................................ 29
3.23. MMC/SDIO SOCKET (P30)............................................................................. 29
3.24. LPC CONNECTOR (P17)................................................................................... 30
3.25. P35 – A/D I NPUT ............................................................................................. 30
3.26. VGA & COM-A FPC C ONNECTOR (P31)...................................................... 30
3.27. SIM C ARD S OCKET (P12)................................................................................ 31
3.28. P OWER C ONNECTORS ...................................................................................... 31
4. FUNCTIONS IMPLEMENTED ON THE SB-X270.............................................33
4.1. PC/104 AND IDE ADDRESSING AND LOGIC .......................................................... 33
4.2. PC-C ARD C ARD B US SOCKET ............................................................................... 33

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4.3. 10/100 M BIT E THERNET P ORT ............................................................................ 34
4.4. RS-232 AND RS-422/485 S ERIAL P ORT D RIVERS ............................................... 34
4.5. LCD P OWER S WITCH AND VDD SELECTION ....................................................... 35
4.6. P OWER S UPPLY O PTIONS ..................................................................................... 36
4.7. CRT I NTERFACE - V IDEO DAC........................................................................... 37
4.8. F RONT P ANEL ...................................................................................................... 37
5. CONNECTOR LOCATION....................................................................................38
6. OPERATING TEMPERATURE RANGES........................................................... 41

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1. Revision Notes
Date
Description
12-May-2006  First release
21-Jun-2006  Updated with WiFi feature
27-Sep-2006  Added E2 jumper description to GPIO section.
 Added a note regarding PC-Card voltage constraint to 3.3V only.
04-Dec-2006  Removed irrelevant mentioning of MMC/SD power switch.
21-Dec-2006  Added a note about touchscreen capacitors removal.
4-Jun-2007  Added a comment regarding the availability of PC-104+ slots.
17-Jun-2007  Removed the incorrect comment regarding compatibility with
OV9653 camera module.
02-Jul-2007  Added instructions for front panel removal
10-Sep-2007  GPIO references (P16 connector) were changed to match those of
PXA270.
 Added a comment about GPIO usage limitation with CM-X270L
23-Oct-2007 Changes for SB-X270 rev 1.3:
 Removed VIP
 Added SIM card connector.
 Added 40 pos FPC LCD connector.
 Added 40 pos FPC IDE connector.
 Added A/D connector.
 Added mini-USB connector.
 Added Bluetooth and GPRS LEDs.
 JTAG connector pinout changed.
23-Dec-2007  Removed mentioning of extended graphics controller (2700G, MG
option), as it has been discontinued in CM-X270W module.
31-Mar-2008  Added GPRS voltage modification instructions
13-May-2008  Clarifications made about USB1 and USB4 ports availability on P15
 P16-20 changed from GND to VCC3-3

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2. Introduction
2.1. Highlights
• Single Board Computer implemented by
combination of CM-X270 module and
SB-X270 baseboard. Compatible with
both X270W and X270L module version
• Available in two form-factors:
- Standard PC/104+
- PC/104+ with front panel
• Intel's XScale PXA270 CPU @ 520 MHz,
128 MB SDRAM, 512 MB Flash Disk
• WLAN/WiFi interface
• GPRS/GSM MODEM*
• Bluetooth 2 EDR*
• VGA graphics controller with
connectors for LCD panel and CRT
monitor
• Video input
• PCI and Local Bus expansions in
PC/104+ format
• COM1 - 4 with RS232 / RS485 / RS422 /
TTL driver options
• Host and slave USB ports including
keyboard & mouse support
• Touchscreen interface
• Hard disk interface
• Sound I/O
• Single or dual 100 Mbps Ethernet ports
• PCMCIA, CardBus & MMC/SDIO slots
• RTC with lithium battery
• Switched power supply, 3.3V to 48V
operating range
The SBC-X270 is a standard
PC/104+ compliant, single board
computer. It is implemented by CM-
X270 module providing most of the
functions, including an integrated
wireless LAN (WiFi) interface,
GPRS/GSM modem and Bluetooth
transmitter. The SB-X270 carrier
board providing connectors and
several additional functions. The rich
features set of the SBC-X270 is
customizable according to the price /
performance targets of the user's
application.
The unique mechanical design of the
SB-X270 allows selecting between
two popular form factors: either a
standard PC/104+ with headers, or an
extended PC/104+ with front panel
connectors.
The SB-X270 contains PC/104+
expansion connectors opening it to
the wide range of standard peripheral
cards. Furthermore, the SB-X270
contains an electrical interface and
slots for PCMCIA, CardBus and
MMC/SDIO extension cards, which
may be inserted and secured in the
slot with no additional mechanical
means, extending the system with
capabilities such as a larger solid state
disk, GPS or GSM modem.

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Notes:
some of above specified features are optional.
* with CM-X270W rev 2 only

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2.2. Features
The "SB Option" column specifies the P/N code of the SB-X270 required for the particular
feature. The "CM Option" column specifies the P/N code of CM-X270 required for the
particular feature. SB-X270 content is the combination of features provided by the attached
CM-X270 and the features implemented on the SB-X270 itself. To have the particular
feature, both the CM and SB options of that feature must be implemented.
"+" means that the feature is always available, regardless of P/N code.
Feature Specification SB
Option
CM
Option
CPU
SDRAM
Flash Disk See Features List of CM-X270 module
COM-A Full modem controls, RS-232 levels, RJ11 or DB9 connector
+ +
COM-B Rx/Tx , RS232 & TTL levels, on 100-mil header + B
COM-C Full modem, RS 232/422/485 levels, standard 10-pin header + +
COM-D Rx/TX, RS-232 & TTL levels, on 100-mil header X +
IrDA SIR and FIR modes. Shared with COM-D + +
IDE PIO mode. Derived from local bus. Standard 40-pin header + +
Ethernet
One or two 10/100BaseT Ethernet ports:
1. Module's port - DM9000, local bus interface
2. Baseboard port Realtek RTL8139 controller PCI interface
RJ-45 connector and activity LED's provided in two options:
- From baseboard's front panel
- Through FPC and optional extension module
+
E2
F1
+
E
E,B
LCD Panel STN and TFT panel support. 51-pos FPC connector for
direct interface to certain TFT panels L +
CRT Monitor
RGB signals are derived from the TFT interface using
DAC's.
Interface through DB15 on the front panel or through
FPC and optional module V +
GPIO 9 to 14 lines, on common 100-mil header. + +
PCMCIA &
CardBus
Slots with card guides, for card types I, II and III. Two
options:
- One slot for PCMCIA / CompactFlash (16-bit) card.
- One PCMCIA slot and one CardBus (32-bit) slot
C1
C2
+
B

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Host USB
Two (default) or four (with "B" option) Host ports, 12 Mbps.
Header for Type-A cable/ connector. Two ports on front
panel. + +
Slave USB Slave port shared with USB3 host, 12 Mbps. + +
Touch Panel UCB1400 controller for resistive panels, pins on 100-mil
header + AT
Sound I/O Header for standard cable/connectors for Microphone
(mono), Line input and Speakers (stereo) + A
PC104 Standard PC/104 connector. Signals are derived from the
CPU's local bus through buffers. 20 bit address. No DMA
Support. P +
PC104+ PCI bus through standard PC/104+ connector R B
RTC Battery Real time clock operated from on-board lithium battery + R
LPC bus LPC bus on common 100-mil header + B
WiFi Interf WLAN / WiFi including connectors, provided by CM-
X270L + W
Electrical, Mechanical and Environmental Specifications
Supply
Voltage
High efficiency switched power supply. Support of sleep mode.
Three supply options:
- Regulated 3.3V (valid only when the module doesn't contain the "A" option)
- Regulated 5.0V
- Unregulated 12V to 48V
Power
Consumption
2W to 5W in full activity, depending on CPU speed and selected features
Below 50mW in sleep mode
Dimensions
Without front panel - 96 x 91 mm
With front panel - 111 x 91 mm
Height ranges from 10 mm to 22 mm, depending on the connectors assembled.
Height specified includes the CM-X270 module.
Operation
temp (case)
Commercial: 0oto 70oC
Extended: -20oto 70oC
Industrial: -40oto 85oC
Storage
temperature -40oto 85oC
Relative
humidity 10% to 90% (operation) 05% to 95% (storage)
Shock 50G / 20 ms
Vibration 20G / 0 - 600 Hz

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MTBF > 100,000 hours

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2.3. Block Diagram
Front Panel (option F)
CM-X270
COM-A
100Mb
Ethernet
Graphics
Controller
4x USB
Audio
codec
PCI
Bridge
CPU
RS232
SDRAM
Flash Disk
ARMmon
RTC
PCMCIA slot (opt C1)CardBus slot (opt C2)
PC/104+ (PCI) (option R)
Battery
100Mb
Ethernet
(opt E2)
PC/104 (ISA) (option P)
1.9
FPC, 51-pos
FPC
RJ45 DB15RJ45RJ11 USBx2
RS232
RS422/485
FPC, 20-pos
Touch-
screen
VGA
ETHR1
ETHR2
DAC
CIF conn.
Video
Encoder
JTAG
Local Bus
&
PCMCIA
Buffers
FPC &
to front panel
COM-B
COM-D
COM-C
RS232
MMC/SDIOSocket
Camera
Interface
GPIO
LPC
I2C/SSP
USIM
Step-down
converter Step-down converter
5V
Power Entry12-48V 3.3V
Analog
Video In
Hard Disk Header
WiFi Interface Antenna connectors

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3. Connector Description
The SB-X270 uses the attached CM-X270 module to implement most of the provided
functions. For these functions, the SB-X270 routes the signals from the CM-X270’s
miniature connectors to the standard connectors. The function’s description is therefore
provided in the CM-X270 Reference Guide. The section below provides only the
description of the external interface connectors. The subsequent section provides the
specifications of those functions implemented on the SB-X270 itself.
3.1. COM-A Connector on Front Panel (P27)
RJ-11 6-pin connector, compatible with a standard RJ11 / DB9 cable (available from
CompuLab). RS-232 level Rx/Tx/RTS/CTS are provided, other modem control lines are
not available. This connector is available only with the front panel option.
Pin Name Pin Name
1 COM-A-RTS# 2 GND
3 COM-A-TX 4 COM-A-RX
5 GND 6 COM-A-CTS#
3.2. COM-C Header (P21)
2x5, 100 mil header, compatible with a standard DB9 cable/connector. RS-232 or TTL
levels, depending on assembled option. Includes modem control lines.
Pin Name Pin Name
1 COM-C-DCD# 2 COM-C-RX
3 COM-C-TX 4 COM-C-DTR#
5 GND 6 COM-C-DSR#
7 COM-C-RTS# 8 COM-C-CTS#
9 COM-C-RI# 10 -
COM-C is also routed to the P16 header (see below) for interfacing RS485/422.

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3.3. USB header & LCD voltage control (P15)
1x26, 100 mil header. USB pin assignment is directly compatible with standard
cables/connectors.
Pin Name
Wire Color Pin Name Wire Color
01 VCC3.3 14 USB3-P Green
02 VSRC-LCD 15 GND Black
03 VCC5 16 SHIELD
04 GND 17 VCC-USB2 Red
05 VCC-USB1 Red 18 USB2-N White
06 USB1-N White 19 USB2-P Green
07 USB1-P Green 20 GND Black
08 GND Black 21 SHIELD
09 SHIELD 22 VCC-USB4 Red
10 VCC-USB3 23 USB4-N White
11 VCC-USB3-BUS 24 USB4-P Green
12 VCC-USB3-BUS Red 25 GND Black
13 USB3-N White 26 SHIELD
Notes
• An LCD power supply voltage selection jumper must be assembled in either 1-2 or 2-3
position for normal LCD functionality.
• A jumper must be assembled on pins 10-11 to provide power, if USB3 is used in host
mode. A jumper must be removed when USB3 is used in slave mode. Jumper only
selects power; the switching between host and slave modes is controlled by ARMmon
command.
• If card includes “F” (front panel) option, then USB1 is routed to the front panel rather
than to P15 header. To change this assignment, user must remove RN40 bypass and
solder it in RN38 location. In cards without “F” option, this is a default assignment.
• USB4 port is available only with CM-X270W module.
3.4. Audio, Touchscreen, Write-protect (P14)
P14 - 1x18 100 mil header
Pin Name Pin Name
1 TSMX 10 GND
2 TSMY 11 GND
3 TSPY 12 LOUT-L
4 TSPX 13 LIN-R
5 NAND-WP#* 14 GND

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6 GND 15 GND
7 NOR-WP#* 16 LIN-L-MIC*
8 GND 17 VCC5
9 LOUT-R 18 GND
Notes
• Pull pins 5 & 7 low to write protect CoM’s NAND and NOR flashes respectively. For
this purpose jumpers can be assembled on P14 5-6 and/or P14 7-8.
• MIC-IN and IN-L signals are connected together; consequently, microphone recording
and line recording can’t be done simultaneously.
• In early versions of SB-X270 there are 4 capacitors assembled, which sometimes
affect touchscreen operation. If you are facing touchscreen problems, please remove
C140, C143, C150, C151. For capacitors location refer to [Developer] >> [X270] >>
[SB-X270 Design] links in CompuLab's web-site.
3.5. RTC, Audio (P18)
1x3 100 mil header
Pin Name
1 GND
2 VBAT
3 SPDIF

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3.6. IDE – Hard Disk Interface (P8, P34)
P8 - Standard 40-pin header, directly compatible with an IDE flat cable
Pin IDE signal CM-X270
connector
pin name
Pin IDE signal CM-X270
connector
pin name
1 RESET# RST-OUT# 2 GND GND
3 DATA7 LB-D7 4 DATA8 LB-D8
5 DATA6 LB-D6 6 DATA9 LB-D9
7 DATA5 LB-D5 8 DATA10 LB-D10
9 DATA4 LB-D4 10 DATA11 LB-D11
11 DATA3 LB-D3 12 DATA12 LB-D12
13 DATA2 LB-D2 14 DATA13 LB-D13
15 DATA1 LB-D1 16 DATA14 LB-D14
17 DATA0 LB-D1 18 DATA15 LB-D15
19 GND GND 20 KEY -
21 DMAREQ - 22 GND GND
23 IOW# LB-IDE-WR# 24 GND GND
25 IOR# LB-IDE-RD# 26 GND GND
27 IOCHRDY LB-IORDY 28 CSEL GND
29 DMAACK# - 30 GND GND
31 IRQ IDE-INT 32 IOCS16# -
33 ADDR1 LB-A4 34 PDIAG -
35 ADDR0 LB-A3 36 ADDR2 LB-A5
37 CS0# IDE-CS0# 38 CS1# IDE-CS1#
39 DASP# (Pullup, LED) 40 GND GND
* Signals marked in gray are not supported.
P34 - 40-pin FPC connector, for IDE interface module available from CompuLab.
Pin IDE signal Pin IDE signal
1 DATA8 21 DATA2
2 VCC5 22 DATA1
3 DATA9 23 GND
4 DATA10 24 DATA0
5 VCC5 25 CS0#
6 DATA11 26 GND
7 DATA12 27 IOCHRDY
8 GND 28 IRQ

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9 DATA13 29 IOW#
10 DATA14 30 GND
11 GND 31 ADDR0
12 DATA15 32 IOR#
13 DATA7 33 GND
14 GND 34 CS1#
15 DATA6 35 DMAACK#
16 DATA5 36 ADDR2
17 GND 37 GND
18 DATA4 38 ADDR1
19 DATA3 39 DMAREQ
20 GND 40 RESET#
3.7. PC Card -PCMCIA slot (P6)
The 68-pin PC Card slot conforms to the PCMCIA standard. It includes card guides.
Pin PCMCIA
Signal CM-X270 connector
pin name
Pin PCMCIA
Signal CM-X270 connector
pin name
1 GND GND 35 GND GND
2 D3 LB-D3 36 CD1# PCM-CDA#
3 D4 LB-D4 37 D11 LB-D11
4 D5 LB-D5 38 D12 LB-D12
5 D6 LB-D6 39 D13 LB-D13
6 D7 LB-D7 40 D14 LB-D14
7 CE1# PCM-CE1# 41 D15 LB-D15
8 A10 LB-A10 42 CE2# PCM-CE2#
9 OE# PCM-MEMR# 43 VS1# -
10 A11 LB-A11 44 IOR# PCM-IOR#
11 A9 LB-A9 45 IOW# PCM-IOW#
12 A8 LB-A8 46 A17 LB-A17
13 A13 LB-A13 47 A18 LB-A18
14 A14 LB-A14 48 A19 LB-A19
15 WE# PCM-MEMW# 49 A20 LB-A20
16 RDY#
IREQ# PCM-IRQ1 50 A21 LB-A21
17 VCC VCC-P1* 51 VCC VCC-P1*
18 VPP1 5V 52 VPP2 5V
19 A16 LB-A16 53 A22 LB-A22

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20 A15 LB-A15 54 A23 LB-A23
21 A12 LB-A12 55 A24 LB-A24
22 A7 LB-A7 56 A25 LB-A25
23 A6 LB-A6 57 VS2# -
24 A5 LB-A5 58 RESET PCM-RST
25 A4 LB-A4 59 WAIT PCM-WAIT#
26 A3 LB-A3 60 INPACK# N/C
27 A2 LB-A2 61 REG# PCM-REG#
28 A1 LB-A1 62 BVD2/SPK -
29 A0 LB-A0 63 BVD1/STS -
30 D0 LB-D0 64 D8 LB-D8
31 D1 LB-D1 65 D9 LB-D9
32 D2 LB-D2 66 D10 LB-D10
33 WP/IOIS# PCM-IOS16# 67 CD2# -
34 GND GND 68 GND GND
* See section 3.8
3.8. PCMCIA Power Header (E4)
This header selects the VCC voltage for PCMCIA / CompactFlash cards in the PCMCIA
slot. The SB-X270 does not support automatic voltage selection, so the user is responsible
for setting the correct VCC voltage before inserting the card, by shorting the appropriate
pins on E4. For 5V supply, short pins 1-2 and for 3.3V supply short pints 2-3. VPP is
constant at 5V.
Pin
Signal
1 VCC5
2 VCC-P1
3 VCC3-3
3.9. CardBus Slot (P7)
68-pin PC Card / CardBus slot including card guides.
The SB-X270 implements a simplified CardBus interface, which connects the CardBus
socket directly to the PCI bus of CM-X270. The provided CardBus implementation doesn't
support hot plug, thus the card has to be inserted before powering the system. The
enumeration sequence is performed using on-board glue logic which controls the CB-
FRAME# signal by software.
Pin Signal Pin Signal

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Name Name
1 GND 35 GND
2 PCI-AD0 36 N/C
3 PCI-AD1 37 PCI-AD2
4 PCI-AD3 38 PCI-AD4
5 PCI-AD5 39 PCI-AD6
6 PCI-AD7 40 N/C
7 PCI-CBE0# 41 PCI-AD8
8 PCI-AD9 42 PCI-AD10
9 PCI-AD11 43 N/C
10 PCI-AD12 44 PCI-AD13
11 PCI-AD14 45 PCI-AD15
12 PCI-CBE1# 46 PCI-AD16
13 PCI-PAR 47 N/C
14 PCI-PERR# 48 PCI-LOCK#
15 PCI-GNT0# 49 PCI-STOP#
16 PCI-INTB# 50 PCI-DEVSEL#
17 VCC3-3 51 VCC3-3
18 VCC3-3 52 VCC3-3
19 CB-CLK 53 PCI-TRDY#
20 PCI-IRDY# 54 CB-FRAME#
21 PCI-CBE2# 55 PCI-AD17
22 PCI-AD18 56 PCI-AD19
23 PCI-AD20 57 N/C
24 PCI-AD21 58 SYS-RST#
25 PCI-AD22 59 PCI-SERR#
26 PCI-AD23 60 PCI-REQ0#
27 PCI-AD24 61 PCI-CBE3#
28 PCI-AD25 62 N/C
29 PCI-AD26 63 N/C
30 PCI-AD27 64 PCI-AD28
31 PCI-AD29 65 PCI-AD30
32 N/C 66 PCI-AD31
33 PU 67 N/C
34 GND 68 GND

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3.10. CRT VGA Connector on Front Panel (P24)
A standard DB-15 connector on front panel enables CRT display. This connector is
available only with the front panel option.
Pin Name
1 RED
2 GREEN
3 BLUE
4 N/C
5 GND
6 GND
7 GND
8 GND
9 N/C
10 GND
11 N/C
12 N/C
13 HSYNC
14 VSYNC
15 N/C
3.11. LCD Panel Connectors (P13, P20)
P13 - 51-pos FPC connector for LCD panels
Pin Name
Pin Name
01 LCD-VDD 27 LCD-VDD
02 LCD-VDD 28 LCD-VDD
03 LCD-R2 29 LCD-B2
04 LCD-R3 30 LCD-B3
05 GND 31 GND
06 LCD-R4 32 LCD-B4
07 LCD-R5 33 LCD-B5
08 GND 34 GND
09 LCD-R6 35 LCD-B6
10 LCD-R7 36 LCD-B7
11 GND 37 GND
12 LCD-R0 38 LCD-B0
13 LCD-R1 39 LCD-B1

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14 GND 40 GND
15 GND 41 GND
16 LCD-G2 42 LCD-LP
17 LCD-G3 43 LCD-FRM
18 GND 44 LCD-DE
19 LCD-G4 45 GND
20 LCD-G5 46 LCD-SCK
21 GND 47 GND
22 LCD-G6 48 LCD-ENVDD
23 LCD-G7 49 LCD-ENVEE
24 GND 50 LCD-VDD
25 LCD-G0 51 LCD-VDD
26 LCD-G1
P20 - 40-pin FPC connector for TFT panels
Pin Name
Pin Name
01 NC 21 LCD-VDD
02 LCD-VDD-EN 22 TSPY
03 GND 23 TSMY
04 LCD-R0 24 TSPX
05 LCD-R1 25 TSMX
06 LCD-VDD 26 LCD-B0
07 LCD-R2 27 LCD-VDD
08 LCD-R3 28 LCD-B1
09 GND 29 LCD-B2
10 LCD-R4 30 GND
11 LCD-R5 31 LCD-B3
12 LCD-VDD 32 LCD-B4
13 LCD-G5 33 GND
14 LCD-G4 34 LCD-B5
15 GND 35 LCD-DE
16 LCD-G3 36 LCD-VDD
17 LCD-G2 37 LCD-LP
18 LCD-VDD 38 LCD-FRM
19 LCD-G1 39 GND
20 LCD-G0 40 LCD-SCK
LCD-VDD-EN is an active low ENAVDD signal to be used in conjunction with the
CONLCD-GEN-V2 adapter module, available from CompuLab.

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3.12. PC/104 connector (P4)
A PC/104 (ISA bus type) stackthrough connector provides limited ISA-like functionality.
The CM-X270's local bus lines are connected through buffers to their respective
counterparts on the PC/104 connector.
Pin
PC/104 Signal CM-X270 connector
pin name
Pin PC/104
Signal CM-X270 connector
(or other
origin) name
A01 IOCHCHK# - B01 GND GND
A02 SD7 LB-D7 B02 RESETDRV RSTDRV
A03 SD6 LB-D6 B03 +5V VCC5
A04 SD5 LB-D5 B04 IRQ9 -
A05 SD4 LB-D4 B05 -5V -
A06 SD3 LB-D3 B06 DRQ2 -
A07 SD2 LB-D2 B07 -12V -
A08 SD1 LB-D1 B08 0WS# -
A09 SD0 LB-D0 B09 +12V -
A10 IOCHRDY LB-IORDY B10 KEY -
A11 AEN GND B11 SMEMW# ISA-WR#*
A12 SA19 LB-A19 B12 SMEMR# ISA-RD#*
A13 SA18 LB-A18 B13 IOW# ISA-IOW#*
A14 SA17 LB-A17 B14 IOR# ISA-IOR#*
A15 SA16 LB-A16 B15 DACK3# Pullup
A16 SA15 LB-A15 B16 DRQ3 -
A17 SA14 LB-A14 B17 DACK1# Pullup
A18 SA13 LB-A13 B18 DRQ1 -
A19 SA12 LB-A12 B19 REFRESH Pullup
A20 SA11 LB-A11 B20 SYSCLK CLK8Mhz
A21 SA10 LB-A10 B21 IRQ7 -
A22 SA9 LB-A9 B22 IRQ6 -
A23 SA8 LB-A8 B23 IRQ5 GPIRQ1*
A24 SA7 LB-A7 B24 IRQ4 -
A25 SA6 LB-A6 B25 IRQ3 GPIRQ1*
A26 SA5 LB-A5 B26 DACK2# Pullup
A27 SA4 LB-A4 B27 TC GND
A28 SA3 LB-A3 B28 BALE Pullup
A29 SA2 LB-A2 B29 +5V VCC5
A30 SA1 LB-A1 B30 OSC CLK16M hz
A31 SA0 LB-A21 B31 GND GND
A32 GND GND B32 GND GND