3.1 Power Supply .............................................................................................................................. 13
3.2 CPU ............................................................................................................................................. 13
4.9 USB ............................................................................................................................................. 28
4.18 Fan .............................................................................................................................................. 39
5 Status LEDs ........................................................................................................................................ 40
5.1 HD LED ....................................................................................................................................... 40
5.2 RGB LED ..................................................................................................................................... 41
9 Technical Data .................................................................................................................................... 68
9.1 Electrical Data ............................................................................................................................. 68
10.2.1 Beckhoff Support ................................................................................................................. 70
10.2.2 Beckhoff Service ................................................................................................................. 70
I Annex: Post-Codes ............................................................................................................................. 71
II Annex: Resources .............................................................................................................................. 74
A IO Range ......................................................................................................................................... 74
B Memory Range ................................................................................................................................ 74
C Interrupt ........................................................................................................................................... 74
D PCI Devices ..................................................................................................................................... 75
E SMB Devices ................................................................................................................................... 75
page 4 Beckhoff New Automation Technology CB4053
Notes on the Documentation Chapter: Document History
0 Document History
Version Changes
0.1 first pre-release
0.9 first complete version, todo: update photographs to G2
1.0 added SSD description, updated thermal specs, minor corrections
1.1 new photographs, updated contact details, minor changes
1.2 added pinout for RS-422/RS-485 COM soldering option, minor changes
1.5 added description of status LEDs, added labels to LVDS connector symbols, minor
changes
1.6 new cover picture; improved output quality of dimensional drawings
NOTE
All company names, brand names, and product names referred to in this manual are registered or
unregistered trademarks of their respective holders and are, as such, protected by national and
international law.
Beckhoff New Automation Technology CB4053 page 5
Chapter: Introduction Notes on the Documentation
1 Introduction
1.1 Notes on the Documentation
This description is only intended for the use of trained specialists in control and automation engineering
who are familiar with the applicable national standards. It is essential that the following notes and
explanations are followed when installing and commissioning these components.
1.1.1 Liability Conditions
The responsible staff must ensure that the application or use of the products described satisfy all the
requirements for safety, including all the relevant laws, regulations, guidelines and standards.
The documentation has been prepared with care. The products described are, however, constantly under
development. For that reason the documentation is not in every case checked for consistency with
performance data, standards or other characteristics. None of the statements of this manual represents a
guarantee (Garantie) in the meaning of § 443 BGB of the German Civil Code or a statement about the
contractually expected fitness for a particular purpose in the meaning of § 434 par. 1 sentence 1 BGB. In
the event that it contains technical or editorial errors, we retain the right to make alterations at any time
and without warning. No claims for the modification of products that have already been supplied may be
made on the basis of the data, diagrams and descriptions in this documentation.
Please consider the following safety instructions and descriptions. Product specific safety instructions are
to be found on the following pages or in the areas mounting, wiring, commissioning etc.
1.2.1 Disclaimer
All the components are supplied in particular hardware and software configurations appropriate for the
application. Modifications to hardware or software configurations other than those described in the
documentation are not permitted, and nullify the liability of Beckhoff Automation GmbH.
1.2.2 Description of Safety Symbols
The following safety symbols are used in this documentation. They are intended to alert the reader to the
associated safety instructions.
ACUTE RISK OF INJURY!
If you do not adhere to the safety advise next to this symbol, there is immediate danger to life and health
of individuals!
RISK OF INJURY!
If you do not adhere to the safety advise next to this symbol, there is danger to life and health of
individuals!
HAZARD TO INDIVIDUALS, ENVIRONMENT, DEVICES, OR DATA!
If you do not adhere to the safety advise next to this symbol, there is obvious hazard to individuals, to
environment, to materials, or to data.
NOTE OR POINTER
This symbol indicates information that contributes to better understanding.
Beckhoff New Automation Technology CB4053 page 7
Chapter: Introduction Essential Safety Measures
1.3 Essential Safety Measures
1.3.1 Operator's Obligation to Exercise Diligence
The operator must ensure that
o the product is only used for its intended purpose
o the product is only operated in sound condition and in working order
o the instruction manual is in good condition and complete, and always available for reference at the
location where the products are used
o the product is only used by suitably qualified and authorised personnel
o the personnel is instructed regularly about relevant occupational safety and environmental protection
aspects
o the operating personnel is familiar with the operating manual and in particular the safety notes
contained herein
1.3.2 National Regulations Depending on the Machine Type
Depending on the type of machine and plant in which the product is used, national regulations governing
the controllers of such machines will apply, and must be observed by the operator. These regulations
cover, amongst other things, the intervals between inspections of the controller. The operator must initiate
such inspections in good time.
1.3.3 Operator Requirements
o Read the operating instructions
All users of the product must have read the operating instructions for the system they work with.
o System know-how
All users must be familiar with all accessible functions of the product.
page 8 Beckhoff New Automation Technology CB4053
Functional Range Chapter: Introduction
1.4 Functional Range
NOTE
The descriptions contained in the present documentation represent a detailed and extensive product
description. As far as the described motherboard was acquired as an integral component of an Industrial
PC from Beckhoff Automation GmbH, this product description shall be applied only in limited scope. Only
the contractually agreed specifications of the corresponding Industrial PC from Beckhoff Automation
GmbH shall be relevant. Due to several models of Industrial PCs, variations in the component placement
of the motherboards are possible. Support and service benefits for the built-in motherboard will be
rendered by Beckhoff Automation GmbH exclusively as specified in the product description (inclusive
operation system) of the particular Industrial PC.
Beckhoff New Automation Technology CB4053 page 9
Chapter: Overview Features
2 Overview
2.1 Features
The CB4053 is a highly complex PC/104-Plus board which incorporates complete motherboard
functionality. Equipped with an Intel® Atom™ processor (Z510 or Z530), it can accommodate up to 2
GByte of RAM (DDR2-533) via SO-DIMM200. It also provides a 16-bit ISA bus (via PC/104, no DMA and
memory transfer functions available) a PCI bus (via PC/104-Plus) and additional peripheral devices such
as two serial interfaces, Gigabit Ethernet interface (LAN), an IDE interface, an audio interface (HDA 7.1),
eight USB channels and CRT and LVDS/TFT support. As an option, the CB4053 can be equipped with an
onboard SSD of 2, 4 or 8GB capacity. The board is based on Intel®'s Menlow® platform which is
optimized for low power consumption. Relieving system designers of the burden that the need for active
cooling normally presents, Menlow® offers attractive new possibilities in the embedded and mobile
markets.
Power
VCCCore; VTT;
DDRVTT
1,5V; 1,8V; 2,5V; 3,3V
Clock
ICS9UMS9633
Intel® Atom™ CPU
Z510 / Z530
(1.1 GHz / 1.6 GHz)
1x SODIMM200
DDR2-RAM
(400/533MHz)
CRT
LCD
USB1
USB2
USB3
USB4
USB5
USB6
USB7
USB8
KB
MS
SDVO-to-RGB-
DAC (CH7317A)
LVDS 18/24
Winbond®
W83627HG
LPT
FAN 1
FAN 2
COM1
COM2
USB 2.0
BIOS
Watchdog
SDVO
US15W Chipset
LPC
Fintek®
F85226
LPC-to-ISA
PC/104
HOST
Intel® SCH
Pericom®
PI7C9X110
PCIe-to-PCI
Slot 1
PC/104plus
MEMORY
HDA-Link
master
slave
PCIe
PCI
Slot 2
Slot 3
Slot 4
PC/104plus
PC/104plus
PC/104plus
RealTek®
ALC885/889
2/4/8GB
SSD
Intel®
82574L
LAN
o Processor Intel® Atom™ (single core, 512KB L2-cache, up to 1.6 GHz clock speed)
o Chipset Intel® SCH US15W with integrated graphics adapter
o SO-DIMM200 socket for one DDR2-533 module of up to 2 GByte
o Two serial interfaces COM1 and COM2
o LAN interface Ethernet 10/100/1000 (Base-T)
o IDE interface
o Option: 2, 4 or 8GB SSD onboard (IDE master. Soldering option: slave)
o PS2 keyboard / mouse interface
SPDIF i
SPDIF o
LINE IN
LINE OUT
MIC
AUX
IDE
SMBus
page 10 Beckhoff New Automation Technology CB4053
Features Chapter: Overview
o LPT interface
o Eight USB 2.0 interfaces (7x host, 1x host/device)
o AWARD BIOS 6.10
o CRT connection
o LCD connection via LVDS 18/24Bit
o AC97/HDA compatible sound controller with SPDIF in and out
o RTC with external CMOS battery
o 5V single supply voltage
o ISA bus via PC/104 (full 16bit support, no DMA and memory transfer functionality)
o PCI bus via PC/104-Plus (max. four master devices)
o Size: 96 mm x 90 mm
Beckhoff New Automation Technology CB4053 page 11
Chapter: Overview Specifications and Documents
2.2 Specifications and Documents
In making this manual and for further reading of technical documentation, the following documents,
specifications and web-pages were used and are recommended.
§ ISA Specification
IEEE996P
www.ieee.org
§ PC/104™ Specification
Version 2.5
www.pc104.org
§ PC/104-Plus™ Specification
Version 2.0
www.pc104.org
§ PCI Specification
Version 2.3 and 3.0
www.pcisig.com
§ ACPI Specification
Version 3.0
www.acpi.info
§ ATA/ATAPI Specification
Version 7 Rev. 1
www.t13.org
§ USB Specifications
www.usb.org
§ SM-Bus Specification
Version 2.0
www.smbus.org
§ Intel® Chipset Description
SCH Datasheet
www.intel.com
§ Intel® Chip Description
Atom® Datasheet
www.intel.com
§ Winbond® Chip Description
W83627HF
www.winbond-usa.com or www.winbond.com.tw
§ Fintek® Chip Description
F85226F Datasheet
www.fintek.com.tw
§ Intel® Chip Description
82574L Datasheet
www.intel.com
page 12 Beckhoff New Automation Technology CB4053
Power Supply Chapter: Detailed Description
3 Detailed Description
3.1 Power Supply
The power supply of the hardware module is effected via the power connector. The board only requires
an operating voltage of 5 volt ± 5%.
3.2 CPU
The motherboard employs an Intel® Atom™ processor either with 1.1GHz or with 1.6GHz clock speed
(Z510/Z530). These are single core CPUs which are optimized for low power consumption while at the
same time providing state-of-the-art computing performance.
The processors include a second level cache of 512 KByte. They also offer many features known from
the desktop range such as MMX2, serial number, loadable microcode etc.
The Atom™ CPU is combined with the SCH US15W chipset. The power consumption of these two
components never exceeds 5 watts combined. Therefore, passive cooling solutions will be sufficient for
many system configurations.
3.3 Memory
There is one conventional SO-DIMM200 socket available to equip the board with memory. For technical
and mechanical reasons it is possible that particular memory modules cannot be employed. Please ask
your sales representative for recommended memory modules.
With currently available SO-DIMM200 modules a memory extension up to 2 GByte is possible
(DDR2-533).
NOTE
The chip set does not support more than 2GB of memory.
Beckhoff New Automation Technology CB4053 page 13
Chapter: Connectors Memory
4 Connectors
This section describes all the connectors found on the CB4053.
CAUTION
For most interfaces, the cables must meet certain requirements. For instance, USB 2.0 requires twisted
and shielded cables to reliably maintain full speed data rates. Restrictions on maximum cable length are
also in place for many high speed interfaces and for power supply. Please refer to the respective
specifications and use suitable cables at all times.
page 14 Beckhoff New Automation Technology CB4053
Connector Map Chapter: Connectors
4.1 Connector Map
Please use the connector map below for quick reference. Only connectors on the component side are
shown. For more information on each connector refer to the table below.
Ref-No. Function Page
P400 "IDE Interface" p. 32
U500* "Memory" p. 18
P800** "LAN" p. 30
P801 "Serial Interface COM1" p. 35
P802** "Audio" p. 31
P803 "Parallel Interface LPT" p. 34
P804 "Serial Interface COM2" p. 36
P805/6 "LCD" p. 26
P807/8** "USB" p. 28
P1200** "VGA" p. 25
P1300/1 "PC/104-Bus" p. 21
P1302 "System" p. 17
P1303 "Power Supply" p. 16
P1304 "SMBus" p. 37
P1305 "Monitoring Functions" p. 38
P1306 "PC/104-Plus Bus" p. 23
P1307 "Fan" p. 39
* not in the picture above (cf. bottom side of board)
** pin orientation holds for board revision G2 and later
Beckhoff New Automation Technology CB4053 page 15
Chapter: Connectors Power Supply
4.2 Power Supply
The connector for the power supply is a standard IDC socket connector with a spacing of 2.54 mm.
The board only requires an operating voltage of 5 volt ± 5%. 3.3V output to the PC/104-Plus bus is the
only off-board supply available.
Should additional voltages be needed for PC/104 expansion cards, these must be provided externally by
connecting the respective pins (see below).
For maximum current availability, it is recommended to use both this power connector and the PC/104
connector for power supply.
NOTE
For "Real Time Clock" an external battery (3.3V) must be connected. You can use pins 1 & 3 here or the
"System" connector (see next page).
CAUTION
The CB4053 includes circuitry that will notify an intelligent power supply to shut down if the processor
reaches a critical temperature. This is achieved by deasserting the (low-active) PS_ON# signal found on
the SM-Bus connector. When PS_ON# is no longer pulled low, an intelligent power supply would take this
as a signal to shut down power. For this to work, PS_ON# must be connected to the power supply's
PS_ON input. If PS_ON# is not otherwise connected, the CB4053 can be damaged beyond repair if a
thermal shutdown event occurs. In rare instances, if power is not shut down, the board will continue to
heat up until failure occurs.
Description Name Pin Name Description
ground GND 1 2 VCC 5 volt supply
CMOS battery >= 3 volt VBAT 3 4 12V 12 volt supply
-5 volt supply -5V 5 6 -12V -12 volt supply
ground GND 7 8 VCC 5 volt supply
page 16 Beckhoff New Automation Technology CB4053
System Chapter: Connectors
4.3 System
The system connector, which has the main functions that are necessary to start the board, is provided via
a standard IDC socket connector with a spacing of 2.54 mm.
This connector supports the following interfaces: PS/2 keyboard, PS/2 mouse, speaker, external
RTC-battery and reset of the board.
NOTE
For "Real Time Clock" an external battery (3.3V) must be connected. Connect "+" to VBAT and "-" to
GND.
Description Name Pin Name Description
speaker to 5 volt SPEAKER 1 2 GND ground
reset to ground RESET# 3 4 KLOCK# keyboard lock
keyboard Data KDAT 5 6 KCLK keyboard clock
mouse data MDAT 7 8 MCLK mouse clock
CMOS battery ≥ 3 volt VBAT 9 10 VCC 5 volt supply
Beckhoff New Automation Technology CB4053 page 17
Chapter: Connectors Memory
4.4 Memory
There is one conventional SO-DIMM200 socket available to equip the board with memory (DDR2-533). It
is located on the bottom side of the board. For technical and mechanical reasons it is possible that
particular memory modules cannot be employed. Please ask your sales representative for recommended
memory modules.
With currently available SO-DIMM modules a memory extension up to 2 GByte is possible. The timing
parameters for different memory modules are automatically set by BIOS.
NOTE
The chip set does not support more than 2GB of memory.
Description Name Pin Name Description
memory reference current REF 1 2 REF memory reference current
ground GND 3 4 GND ground
data 0 DQ0 5 6 DQ4 data 4
data 1 DQ1 7 8 DQ5 data 5
2.5 volt supply 2.5V 9 10 2.5V 2.5 volt supply
data strobe 0 DQS0 11 12 DQM0 data mask 0
data 2 DQ2 13 14 DQ6 data 6
ground GND 15 16 GND ground
data 3 DQ3 17 18 DQ7 data 7
data 8 DQ8 19 20 DQ12 data 12
2.5 volt supply 2.5V 21 22 2.5V 2.5 volt supply
data 9 DQ9 23 24 DQ13 data 13
data strobe 1 DQS1 25 26 DQM1 data mask 1
ground GND 27 28 GND ground
data 10 DQ10 29 30 DQ14 data 14
data 11 DQ11 31 32 DQ15 data 15
2.5 volt supply 2.5V 33 34 2.5V 2.5 volt supply
clock CK0 35 36 2.5V 2.5 volt supply
clock CK0# 37 38 2.5V 2.5 volt supply
ground GND 39 40 GND ground
data 16 DQ16 41 42 DQ20 data 20
page 18 Beckhoff New Automation Technology CB4053
Memory Chapter: Connectors
Description Name Pin Name Description
data 17 DQ17 43 44 DQ21 data 21
2.5 volt supply 2.5V 45 46 2.5V 2.5 volt supply
data strobe 2 DQS2 47 48 DQM2 data mask 2
data 18 DQ18 49 50 DQ22 data 22
ground GND 51 52 GND ground
data 19 DQ19 53 54 DQ23 data 23
data 24 DQ24 55 56 DQ28 data 28
2.5 volt supply 2.5V 57 58 2.5V 2.5 volt supply
data 25 DQ25 59 60 DQ29 data 29
data strobe 3 DQS3 61 62 DQM3 data mask 3
ground GND 63 64 GND ground
data 26 DQ26 65 66 DQ30 data 30
data 27 DQ27 67 68 DQ31 data 31
2.5 volt supply 2.5V 69 70 2.5V 2.5 volt supply
data check bit 0 CB0 71 72 CB4 data check bit 4
data check bit 1 CB1 73 74 CB5 data check bit 5
ground GND 75 76 GND ground
data strobe 8 DQS8 77 78 DQM8 data mask 8
data check bit 2 CB2 79 80 CB6 data check bit 6
2.5 volt supply 2.5V 81 82 2.5V 2.5 volt supply
data check bit 3 CB3 83 84 CB7 data check bit 7
reserved N/C 85 86 N/C reserved
ground GND 87 88 GND ground
clock CK2 89 90 GND ground
clock CK2# 91 92 2.5V 2.5 volt supply
2.5 volt supply 2.5V 113 114 2.5V 2.5 volt supply
address 10 A10 115 116 BA1 SDRAM bank 1
SDRAM bank 0 BA0 117 118 RAS# row address strobe
write enable WE# 119 120 CAS# column address strobe
chip select S0# 121 122 S1# chip select
reserved N/C 123 124 N/C reserved
ground GND 125 126 GND ground
data 32 DQ32 127 128 DQ36 data 36
data 33 DQ33 129 130 DQ37 data 37
2.5 volt supply 2.5V 131 132 2.5V 2.5 volt supply
data strobe 4 DQS4 133 134 DQM4 data mask 4
data 34 DQ34 135 136 DQ38 data 38
ground GND 137 138 GND ground
data 35 DQ35 139 140 DQ39 data 39
data 40 DQ40 141 142 DQ44 data 44
2.5 volt supply 2.5V 143 144 2.5V 2.5 volt supply
data 41 DQ41 145 146 DQ45 data 45
data strobe 5 DQS5 147 148 DQM5 data mask 5
ground GND 149 150 GND ground
data 42 DQ42 151 152 DQ46 data 46
Beckhoff New Automation Technology CB4053 page 19
Chapter: Connectors Memory
Description Name Pin Name Description
data 43 DQ43 153 154 DQ47 data 47
2.5 volt supply 2.5V 155 156 2.5V 2.5 volt supply
2.5 volt supply 2.5V 157 158 CK1# clock
ground GND 159 160 CK1 clock
ground GND 161 162 GND ground
data 48 DQ48 163 164 DQ52 data 52
data 49 DQ49 165 166 DQ53 data 53
2.5 volt supply 2.5V 167 168 2.5V 2.5 volt supply
data strobe 6 DQS6 169 170 DQM6 data mask 6
data 50 DQ50 171 172 DQ54 data 54
ground GND 173 174 GND ground
data 51 DQ51 175 176 DQ55 data 55
data 56 DQ56 177 178 DQ60 data 60
2.5 volt supply 2.5V 179 180 2.5V 2.5 volt supply
data 57 DQ57 181 182 DQ61 data 61
data strobe 7 DQS7 183 184 DQM7 data mask 7
ground GND 185 186 GND ground
data 58 DQ58 187 188 DQ62 data 62
data 59 DQ59 189 190 DQ63 data 63
2.5 volt supply 2.5V 191 192 2.5V 2.5 volt supply
SPD data SDA 193 194 SA0 SPD address
SPD clock SCL 195 196 SA1 SPD address
3.3 volt supply 3.3V 197 198 SA2 SPD address
reserved N/C 199 200 N/C reserved
page 20 Beckhoff New Automation Technology CB4053
PC/104-Bus Chapter: Connectors
4.5 PC/104-Bus
An onboard LPC-to-ISA bridge (Fintek® F85226F) makes it possible to expand the functionality of the
board with additional PC/104 cards. This interface offers full 16bit ISA compliance. For further information
on this interface please refer to the PC/104 specifications (see "Specifications and Documents", p. 12).
NOTE
The chipset used on this board does not support ISA-DMA functionality.
Pinning of the standard 8 bit PC/104 connector.
Description Name Pin Name Description
ISA - IO channel check IOCHK# A1 B1 GND ground
ISA – data 7 SD7 A2 B2 RSTDRV reset drive
ISA – data 6 SD6 A3 B3 VCC 5 volt supply
ISA – data 5 SD5 A4 B4 IRQ9 ISA – interrupt 9 (2)
ISA – data 4 SD4 A5 B5 -5V -5 volt supply
ISA – data 3 SD3 A6 B6 (DRQ2) reserved
ISA – data 2 SD2 A7 B7 -12V -12 volt supply
ISA – data 1 SD1 A8 B8 IOCHRDY ISA – IO channel ready
ISA – data 0 SD0 A9 B9 12V 12 volt supply
ISA – IO channel ready IOCHRDY A10 B10 N/C reserved
ISA – address enable AEN A11 B11 SMEMW# ISA – system memory write
ISA – address 19 SA19 A12 B12 SMEMR# ISA – system memory read
ISA – address 18 SA18 A13 B13 IOW# ISA – IO write
ISA – address 17 SA17 A14 B14 IOR# ISA – IO read
ISA – address 16 SA16 A15 B15 (DACK3#) reserved (pulled high)
ISA – address 15 SA15 A16 B16 (DRQ3) reserved
ISA – address 14 SA14 A17 B17 (DACK1#) reserved (pulled high)
ISA – address 13 SA13 A18 B18 (DRQ1) reserved
ISA – address 12 SA12 A19 B19 REFRESH# ISA – refresh
ISA – address 11 SA11 A20 B20 SYSCLK ISA – system clock
ISA – address 10 SA10 A21 B21 IRQ7 ISA – interrupt 7
ISA – address 9 SA9 A22 B22 IRQ6 ISA – interrupt 6
ISA – address 8 SA8 A23 B23 IRQ5 ISA – interrupt 5
ISA – address 7 SA7 A24 B24 IRQ4 ISA – interrupt 4
Beckhoff New Automation Technology CB4053 page 21
Chapter: Connectors PC/104-Bus
Description Name Pin Name Description
ISA – address 6 SA6 A25 B25 IRQ3 ISA – interrupt 3
ISA – address 5 SA5 A26 B26 (DACK2#) reserved (pulled high)
ISA – address 4 SA4 A27 B27 T/C ISA – terminal count
ISA – address 3 SA3 A28 B28 BALE ISA – address latch en.
ISA – address 2 SA2 A29 B29 VCC 5 volt supply
ISA – address 1 SA1 A30 B30 OSC ISA – 14,318MHz
ISA – address 0 SA0 A31 B31 GND ground
ground GND A32 B32 GND ground
Pinning of the 16 bit expansion PC/104 connector.
Description Name Pin Name Description
ground GND C0 D0 GND ground
ISA – byte high enable SBHE# C1 D1 MEMCS16# ISA – memory chip select
ISA – latched address 23 LA23 C2 D2 IOCS16# ISA – IO chip select
ISA – latched address 22 LA22 C3 D3 IRQ10 ISA – interrupt 10
ISA – latched address 21 LA21 C4 D4 IRQ11 ISA – interrupt 11
ISA – latched address 20 LA20 C5 D5 IRQ12 ISA – interrupt 12
ISA – latched address 19 LA19 C6 D6 IRQ15 ISA – interrupt 15
ISA – latched address 18 LA18 C7 D7 IRQ14 ISA – interrupt 14
ISA – latched address 17 LA17 C8 D8 (DACK0#) reserved (pulled high)
ISA – memory read MEMR# C9 D9 (DRQ0) reserved
ISA – memory write MEMW# C10 D10 (DACK5#) reserved (pulled high)
ISA – data 8 SD8 C11 D11 (DRQ5) reserved
ISA – data 9 SD9 C12 D12 (DACK6#) reserved (pulled high)
ISA – data 10 SD10 C13 D13 (DRQ6) reserved
ISA – data 11 SD11 C14 D14 (DACK7#) reserved (pulled high)
ISA – data 12 SD12 C15 D15 (DRQ7) reserved
ISA – data 13 SD13 C16 D16 VCC 5 volt supply
ISA – data 14 SD14 C17 D17 MASTER# ISA – bus master
ISA – data 15 SD15 C18 D18 GND ground
reserved N/C C19 D19 GND ground
page 22 Beckhoff New Automation Technology CB4053
PC/104-Plus Bus Chapter: Connectors
4.6 PC/104-Plus Bus
Expansion cards can be connected to the board using the PCI connector first introduced with the
PC/104-Plus standard. A maximum of four PC/104-Plus cards are supported.
The interrupt routing and the IDSEL signals for the expansion cards are specified in the PC/104-Plus
specification (see "Specifications and Documents", p. 12).