Acrosser Technology AR-B1479 User manual

AR-B1479
INDUSTRIAL GRADE
CPU BOARD
User’ s Guide
Edition: 1.21
Book Number: AR-B1479-05.05.25

AR-B1479 User’s Guide
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Table of Contents
0. PREFACE.....................................................................................................................................................................3
0.1COPYRIGHT NOTICE AND DISCLAIMER................................................................................................................3
0.2 WELCOME TO THE AR-B1479 CPU BOARD..........................................................................................................3
0.3 BEFORE YOU USE THIS GUIDE.............................................................................................................................3
0.4 RETURNING YOUR BOARD FOR SERVICE ..........................................................................................................3
0.5 TECHNICAL SUPPORT AND USER COMMENTS ..................................................................................................3
0.6 ORGANIZATION.......................................................................................................................................................4
0.7 STATIC ELECTRICITY PRECAUTIONS...................................................................................................................4
1. OVERVIEW...................................................................................................................................................................5
1.1SPECIFICATION........................................................................................................................................................5
1.2 PACKING LIST .........................................................................................................................................................5
1.3 FEATURES...............................................................................................................................................................6
1.4 POINT FOR ATTENTION..........................................................................................................................................6
2. SYSTEM CONTROLLER..............................................................................................................................................7
2.1 POWERFUL X86 PROCESSOR ..............................................................................................................................7
2.2 64-BIT SDRAM UMA CONTROLLER.......................................................................................................................8
2.3 CRT CONTROLLER.................................................................................................................................................9
2.4 2D GRAPHICS ENGINE.........................................................................................................................................10
2.5 INTERRUPT CONTROLLER..................................................................................................................................10
2.6 DMA CONTROLLER...............................................................................................................................................11
2.7 TIMER / COUNTERS..............................................................................................................................................12
2.8 IDE CONROLLER...................................................................................................................................................12
2.9 OPTIONAL 16-BIT LOCAL BUS INTERFACE........................................................................................................12
2.10 ISA MASTER / SLAVE..........................................................................................................................................12
2.11 PCI MASTER / SLAVE / ARBITER........................................................................................................................13
3. SETTING UP THE SYSTEM.......................................................................................................................................14
3.1 OVERVIEW.............................................................................................................................................................14
3.2 SYSTEM SETTING.................................................................................................................................................14
3.2.1 Hard Disk (IDE) Connector......................................................................................................................................................15
3.2.2 FDD Port Connector (CN4)......................................................................................................................................................16
3.2.3 Ethernet RJ-45 Connector (LAN1)...........................................................................................................................................17
3.2.4 PS/2 Mouse Connector (CN2 & PS1) ......................................................................................................................................17
3.2.5 PS-ON Header (CN1)..............................................................................................................................................................17
3.2.6 Reset Header (J1) ...................................................................................................................................................................17
3.2.7 Power Connector (PWR1) .......................................................................................................................................................18
3.2.8 CRT Connector (DB1) .............................................................................................................................................................18
3.2.9 LCD Supported Voltage LCD1 Select (JP1).............................................................................................................................18
3.2.10 LCD Panel Display Connector (LCD1)...................................................................................................................................19
3.2.11 LED Header (J8)....................................................................................................................................................................19
3.2.12 PC/104 Connector.................................................................................................................................................................20
3.2.13 Parallel Port Connector (CN3) ...............................................................................................................................................21
3.2.14 IR. Header (J4)......................................................................................................................................................................21
3.2.15 Power External Connector (J11)............................................................................................................................................21
3.2.16 Speaker External Connector (J10).........................................................................................................................................21
3.2.17 COM1, COM2 (DB2, CN5).....................................................................................................................................................22
3.2.18 Touch Screen Connector (J6 & J7)........................................................................................................................................23
3.2.19 D.O.C. Memory Bank Address Select (JP3)...........................................................................................................................23
3.2.20 ATX POWER External Bottom Connector (J2).......................................................................................................................24
3.2.21 Ethernet Setup (JP2).............................................................................................................................................................24
3.3 WATCHDOG TIMER...............................................................................................................................................24
3.3.1 Watchdog Timer Setting ..........................................................................................................................................................25
3.3.2 Watchdog Timer Trigger..........................................................................................................................................................25
4. INSTALLATION..........................................................................................................................................................27
4.1 OVERVIEW.............................................................................................................................................................27
4.2 UTILITY DISKETTE................................................................................................................................................27
4.2.1 Driver Installation.....................................................................................................................................................................27
5. BIOS CONSOLE.........................................................................................................................................................28
5.1BIOS SETUP OVERVIEW .......................................................................................................................................28
5.2 STANDARD CMOS SETUP....................................................................................................................................30
5.3 ADVANCED CMOS SETUP....................................................................................................................................31
5.4 ADVANCED CHIPSET SETUP...............................................................................................................................34
5.5 POWER MANAGEMENT........................................................................................................................................35
5.6 PCI/PLUG AND PLAY.............................................................................................................................................36
5.7 PERIPHERAL SETUP ............................................................................................................................................37
5.8 AUTO-DETECT HARD DISKS................................................................................................................................38

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5.9 PASSWORD SETTING...........................................................................................................................................38
5.10 LOAD DEFAULT SETTING...................................................................................................................................38
5.10.1 Auto Configuration with Optimal Setting.................................................................................................................................38
5.10.2 Auto Configuration with Fail Safe Setting...............................................................................................................................38
5.11 BIOS EXIT.............................................................................................................................................................38
5.11.1 Save Settings and Exit...........................................................................................................................................................39
5.11.2 Exit Without Saving................................................................................................................................................................39
5.12 BIOS UPDATE......................................................................................................................................................40

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0. PREFACE
0.1COPYRIGHT NOTICE AND DISCLAIMER
February 2002
This document is copyrighted, 2001 by Acrosser Technology Co., Ltd. All rights are reserved. No part of this
manual may be reproduced, copied, transcribed, stored in a retrieval system, or translated into any language or
computer language in any form or by any means, such as electronic, mechanical, magnetic, optical, chemical,
manual or other means without the prior written permission of original manufacturer.
Acrosser Technology assumes no responsibility or warranty with respect to the content in this manual and
specifically disclaims any implied warranties of merchantability or fitness for any particular purpose. Furthermore,
Acrosser Technology reserves the right to make improvements to the products described in this manual at any
times without notice. Such revisions will be posted on the Internet (WWW.ACROSSER.COM) as soon as
possible.
Possession, use, or copying of the software described in this publication is authorized only pursuant to a valid
written license from Acrosser or an authorized sub licensor.
ACKNOWLEDGEMENTS
Acrosser, AMI, IBM PC/AT, ALI, Windows 3.1, MS-DOS, …are registered trademarks.
All other trademarks and registered trademarks are the property of their respective holders.
0.2 WELCOME TO THE AR-B1479 CPU BOARD
This guide introduces the Acrosser AR-B1479 CPU board.
The information provided in this manual describes about the card functions and features. It also helps you start,
set up and operate your AR-B1479. General system information can also be found in this publication.
0.3 BEFORE YOU USE THIS GUIDE
Please refer to the Chapter 3, “Setting Up The System” in this guide, if you have not already installed this AR-
B1479. Check the packing list before you install and make sure the accessories are completely included.
The AR-B1479 CD provides the newest information about the card. Please refer to the files of the enclosed
utility CD. It contains the modification, hardware & software information. And it also has updated the product
functions that may not be mentioned here.
0.4 RETURNING YOUR BOARD FOR SERVICE
If your board requires any services, contact the distributor or sales representative from whom you purchased the
product for service information. If you need to ship your board to us for service, be sure it is packed in a protective
carton. We recommend that you keep the original packaging for this purpose.
You can assure efficient servicing for your product by following these guidelines:
1. Include your name, address, daytime telephone and facsimile numbers and E-mail.
2. A description of the system configuration and/or software at the time is malfunction,
3. A brief description of the problem occurred.
0.5 TECHNICAL SUPPORT AND USER COMMENTS
User’s comments are always welcome as they assist us in improving the quality of our products and the
readability of our publications. They create a very important part of the input used for product enhancement and
revision.
We may use and distribute any of the information you provide in anyway appropriate without incurring any
obligation. You may, of course, continue to use the information you provide.
If you have any suggestions for improving particular sections or if you find any errors on it, please send your
comments to Acrosser Technology Co., Ltd. or your local sales representative and indicate the manual title and
book number.
Internet electronic mail to: [email protected]
Check our FAQ sheet for quick fixes to known technical problems.

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0.6 ORGANIZATION
This manual covers the following topics (see the Table of Contents for a detailed listing):
lChapter 1, “Overview”, provides an overview of the system features and packing list.
lChapter 2, “System Controller” describes the major structure.
lChapter 3, “Setting Up the System”, describes how to adjust the jumper, and the connector’s settings.
lChapter 4, “Installation”, describes setup procedures including information on the utility diskette.
lChapter 5, “BIOS Console”, provides the BIOS options settings.
0.7 STATIC ELECTRICITY PRECAUTIONS
Before removing the board from its anti-static bag, read this section about static electricity precautions.
Static electricity is a constant danger to computer systems. The charge that can build up in your body may be
more than sufficient to damage integrated circuits on any PC board. Therefore, it is very important to observe
basic precautions whenever you use or handle computer components. Although areas with humid climates are
much less prone to static build-up, it is always best to safeguard against accidents that may result in expensive
repairs. The following measures should be sufficient to protect your equipment from static discharge:
•Touch a grounded metal object to discharge the static electricity in your body (or ideally, wear a grounded
wrist strap).
•When unpacking and handling the board or other system components, place all materials on an anti-static
surface.
•Be careful not to touch the components on the board, especially the “golden finger” connectors on the bottom
of the board.

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1. OVERVIEW
AR-B1479 Is a Consumer II /Elite PC-133 CPU Board with Ethernet, DOC, and Compact Flash (option).
This chapter provides an overview of your system features and capabilities. The following topics are covered:
l Specification
l Packing List
l Features
l Point for attention
1.1SPECIFICATION
l CPU: Consumer II/Elite PC-133 BGA.
l RAM Memory: On board 32 MB SDRAM.
l SSD: Support one socket for DiskOnChip.
l Watchdog: Software programmable 1~63sec.
l VGA Memory: AR-B1479 -- UMA, shared system memory up to 4MB
Supports CRT interface.
AR-B1479B –Embedded 2MB SDRAM Video memory
Supports CRT interface.
l VGA Interface: AR-B1479 –CRT-D-SUB 15pin female connector at bracket.
AR-B1479B–CRT-D-SUB 15pin female connector at bracket.
LCD with 2.0mm 44-pin Header connector.
l Ethernet: RTL8100B chipset, supports 10/100M baseT with RJ-45 connector built-in LED.
l Super I/O: Winbond 83977F-A
2 EIDE (Ultra DMA33)–with one 2.54 mm 40-pin connector and
one 2.00 mm 44-pin connector
1 FDC –with 2.54 mm 34-pin connector.
1 Parallel –with 2.54 mm 26-pin connector (supports SPP/EPP/ECP mode).
1RS-232C/RS485 –COM1 Share with 485
1 RS-232C /IrDA/Touch Screen –with 2.54 mm 10-pin connector
RS-232C is selectable by jumper and use the same connector.
IrDA with 2.54mm 5-pin header.
Touch Screen with 2.0mm 3-pin JST connector.
l BIOS: Flash BIOS AMI.
l Keyboard/Mouse: PS/2 compatible 6-pin mini-DIN connector.
l RTC: Chipset including, Support ACPI function with 7 years data retention.
l Expansion Bus: PC/104.
l Power Connector: One 4-pin Wafer Connector.
l Power Req.: +5V-1.4A maximum and 12V –0.01A maximum.
l PC Board: 6 layers, EMI considered
l Dimensions: 185 mm x 122 mm (7.3”x4.8”)
1.2 PACKING LIST
Some accessories are included with the system. Before AR-B1479 has been installed, please take a moment to
make sure that the following items have been included inside the AR-B1479 package.
l The quick setup manual
l 1 AR-B1479 CPU board
l 1 Hard disk drive adapter cable for 3.5” HDD
l 1 Hard disk drive adapter cable for 2.5” HDD
l 1 Floppy disk drive adapter cable.
l 1 Parallel port adapter cable & 1 RS-232C interface cable mounted on one bracket
l 1 PS/2 Y-type cable
l 1 Software utility CD

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1.3 FEATURES
The system provides a number of special features that enhance its reliability, ensure its long-term availability, and
improve its expansion capabilities, as well as its hardware structure.
l Consumer II/Elite PC-133 BGA
l On board 32 MB SDRAM and one SO-DIMM socket.
l Supports DOC Flash Disk.
l 10/100M-Base Ethernet.
l Compact Flash (AR-B9462A) optional.
l AMI BIOS.
l Power Req.: +5V-1.4A maximum and 12V –0.01A maximum.
l Dimensions: 185 mm x 122 mm (7.3”x4.8”).
1.4 POINT FOR ATTENTION
The AR-B1479 CPU is a consumer II with C4 as a version that included some bugs on it. The effect is the use of
floppy in WIN95 would be unable. The bug can be revised in CPU with C5 as a version. But according to ST as
the original manufacturer, C5 just can normally be produced at least in October. The bug still exists so it is better
to use the C4. Therefore, we decided to adopt no support as our temporary strategy.
In AR-B1479B section, we have to install WIN 95, and then set up the Floppy driver as the additional step in order
to drive the AR-B1479B Floppy device properly.

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2. SYSTEM CONTROLLER
This chapter describes the main structure of the AR-B1479 CPU board. The following topics are covered:
lPowerful x86 Processor
l64-Bit SDRAM UMA Controller
lCRT Controller
l2D Graphics Engine
lInterrupt Controller
lDMA Controller
lTimer/Counters
lIDE Controller
lOptional 16-Bit Local Bus Interface
lISA Master/Slave
lPCI Master/Slave/Arbiter
2.1 POWERFUL X86 PROCESSOR
The AR-B1479 uses the Consumer II/Elite PC-133 BGA, it is an advanced 64-bit x86 processor block compatible
processor offering high performance, fully accelerated 2D graphics, a 64-synchronous DRAM controller, all on a
single chip. It includes a 64-bit SDRAM controller, a high speed PCI local-bus controller and Industry standard PC
chip set functions (Interrupt controller, DMA Controller, Interval timer and ISA BUS).
lFully static 32-bit five-stage pipeline, x86 processor fully PC compatible.
lCan access up to 4 GB of external memory.
l8 Kbyte unified instruction and data cache with write back and write through capability.
lParallel processing integral floating-point unit, with automatic power down.
lRuns up to100 MHz (x1) or 133 MHz (x2).
lFully static design for dynamic clock control.
lLow power and system management modes.
lOptimized design for 2.5 V operations.

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2.2 64-BIT SDRAM UMA CONTROLLER
l64-bit data bus.
lUp to100 MHz SDRAM clock speed.
lIntegrated system memory, graphic frame memory and video frame memory.
lSupports 2MB up to 128 MB system memory
lSupports 16-, 64-, and 128-Mbit SDRAMs.
lSupports 8, 16, 32, 64, and 128 MB DIMMs.
lSupports buffered, non-buffered, and registered DIMMs.
lFour-line write buffers for CPU to SDRAM and PCI to SDRAM cycles.
lFour0line read prefetch buffers for PCI masters.
lProgrammable latency
lProgrammable timing for SDRAM parameters.
lSupports –8, -10, -12, -13, -15 memory parts.
lSupports memory hole between 1 MB and 8 MB for PCI/ISA busses.
The SDRAM controller only supports 64 bit wide Memory Banks.
Four Memory Banks (if DIMMS are used; Single sided or two doubled-sided DIMMs) are supported in the following
configurations.
Memory
Bank size
Number Organization
Device
Size
1Mx64 41Mx16
2Mx64 82Mx8
4Mx64 16 4Mx4 16Mbits
4Mx64 42Mx16x2
8Mx64 84Mx8x2
16xM64 16 8Nx4x2
4Mx64 41Mx16x4
8Mx64 82Mx8x4
32Mx64 16 4Mx4x4
64Mbits
16Mx64 82Mx16x2
32Mx64 16 4Mx8x4 128Mbits
Memory configurations
The SDRAM Controller supports buffered or unbuffered SDRAM but not EDO or FPM modes. SDRAMs must
support Full Page Mode Type access.
The STPC Memory Controller provides various programmable SDRAM parameters to allow the SDRAM interface
to be optimized for different processor bus speeds SDRAM grades and CAS Latency

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This chapter defines the STPC Consumer-II Strap Options and their location. Some strap options are left
programmable for future versions of silicon.
Strap Options
2.3 CRT CONTROLLER
lIntegrated 135 MHz triple RAMDAC allowing for 1280 x 1024 x 75 Hz displays.
lRequires external frequency synthesizer and reference sources.
l8-bit, 16-bit, 24-bit pixels.
lInterlaced or non-interlaced output.
lRequires no external frequency synthesizer.
lRequires only external reference source.

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2.4 2D GRAPHICS ENGINE
l64-bit windows accelerator.
lBackward compatibility to SVGA standards.
lHardware acceleration for text, bitblts, transparent blts and fills
lUp to 64 x 64 graphics hardware cursor.
lUp to 4MB long linear frame buffer.
l8-, 16-, 24-and 32-bit pixels.
lDrivers available for various OSes.
2.5 INTERRUPT CONTROLLER
Most of the IPC signals are multiplexed: Interrupt inputs, DMA Request inputs, DMA Acknowledge outputs. The
figure below describes a complete implementation of the IRQ [15:0] time multiplexing. When an interrupts line is
used internally, the corresponding input can be grounded. In most of the embedded designs, only few interrupts
lines are necessary and the glue logic can be simplified.
Typical IRQ multiplexing
When the interface is integrated into the STPC, the corresponding interrupt line can be grounded as it is connected
internally.
For example, if the integrated IDE controller is activated, the IRQ [14] and IRQ [15] inputs can be grounded.

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2.6 DMA CONTROLLER
lDMA channel
l2X8237/AT compatible 7-channel DMA controller.
l2X8259/AT compatible interrupt Controller.
16 interrupt inputs –ISA and PCI.
lThree 8254 compatible Timer/Counters.
lCo-processor error support logic.
The figure below describes a complete implementation of the external glue logic for DMA Request time-
multiplexing and DMA Acknowledge demultiplexing. Like for the interrupt lines, this logic can be simplified when
only few DMA channels are used in the application. This glue logic is not needed in Local bus mode and it does not
support DMA transfers.
Typical DMA multiplexing and demultiplexing

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2.7 TIMER / COUNTERS
lSystem Activity Detection.
lThree power down timers.
lDoze timer for detecting lack of system activity for short durations.
lStand-by timer for detecting lack of system activity for medium durations.
lSuspend timer for detecting lack of system activity for long durations.
lHousekeeping activity detection.
lHousekeeping timer to cope with short bursts of housekeeping activity while dozing or in stand-by state.
2.8 IDE CONROLLER
lSupports PIO.
lTransfer Rates to 22 Mbytes/sec.
lSupports up to 4 IDE devices.
lConcurrent channel operation (PIO modes) –
4 x 32-Bit Buffer FIFOs per channel.
lSupport for PIO mode 3 & 4.
lIndividual drive timing for all four IDE devices.
lSupports both legacy & native IDE modes.
lSupports hard drive larger than 528MB.
lSupport for CD-ROM and tape peripherals.
lBackward compatibility with IDE (ATA-1).
lDrivers for Windows and other Operating Systems.
2.9 OPTIONAL 16-BIT LOCAL BUS INTERFACE
lMultiplexed with ISA/DMA interface.
lLow latency asynchronous bus.
l22-bit address bus.
l16-bit data bus with word steering capability.
lProgrammable timing (Host clock granularity).
lTwo Programmable Flash Chip Select.
lFour Programmable I/O Chip Select.
lSupports 32-bit Flash burst.
lTwo-level hardware key protection for Flash boot block protection.
lSupports two banks of 16MB flash devices with boot block shadowed to 0x000F0000.
2.10 ISA MASTER / SLAVE
lGenerates the ISA clock from either 14.318 MHz oscillator clock or PCI clock.
lSupports programmable extra wait state for ISA cycles.
lSupports I/O recovery time for back-to-back I/O cycles.
lFast Gate A20 and Fast reset.
lSupports this single ROM that C, D, or E.
Blocks shares with F block BIOS ROM.
lSupports flash ROM.
lSupports ISA hidden refresh.
lBuffered DMA & ISA master cycles to reduce bandwidth utilization of the PCI and Host bus.

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2.11 PCI MASTER / SLAVE / ARBITER
lFully compliant with PCI 2.1 specification.
lIntegrated PCI arbitration interface. Up to 3 masters can connect directly. External PAL allows for greater
then 3 masters.
lTranslation of PCI cycles to ISA bus.
lTranslation of ISA master initiated cycle to PCI
lSupport for burst read/write from PCI master.
lPCI clock is 1/2, 1/3 or 1/4 CPU bus clock.

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3. SETTING UP THE SYSTEM
This section describes pin assignments of on board connector and jumper settings.
lOverview
lSystem Setting
3.1 OVERVIEW
AR-B1479 is a Pentium Grade CPU Board, which supports Ethernet, DOC, SSD, and Compact Flash (AR-B9462A)
functions. This section provides the hardware’s jumper settings, the connectors’ locations, and the pin assignments.
External System Location
3.2 SYSTEM SETTING
Jumper pins allow you to set specific system parameters. Set them by changing the pin location of jumper blocks.
(A jumper block is a small plastic-encased conductor that slips over the pins.) To change a jumper setting, remove
the jumper from its current location with your fingers or small needle-nosed pliers. Place the jumper over the two
pins designated for the desired setting. Press the jumper evenly onto the pins. Be careful not to bend the pins.
CAUTION: Do not touch any electronic components unless you are safely grounded. Wear a grounded wrist strap
or touch an exposed metal part of the system unit chassis. The static discharges from your fingers can
permanently damage electronic components.

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3.2.1 Hard Disk (IDE) Connector
(1) 40-Pin Hard Disk (IDE) Connector (IDE1)
A 40-pin header type connector (IDE1) is provided to interface with up to two embedded hard disk drives (IDE AT
bus). This interface, through a 40-pin cable, allows the user to connect up to two drives in a “daisy chain” fashion.
To enable or disable the hard disk controller, please use the BIOS Setup program, which is explained further in
chapter 5. The following table illustrates the pin assignments of IDE1.
39
40
2
1
0Pin Signal Pin Signal
1-RESET 2GROUND
3DATA 7 4DATA 8
5DATA 6 6DATA 9
7DATA 5 8DATA 10
9DATA 4 10 DATA 11
11 DATA 3 12 DATA 12
13 DATA 2 14 DATA 13
15 DATA 1 16 DATA 14
17 DATA 0 18 DATA 15
19 GROUND 20 NOT USED
21 IDEDREQ 22 GROUND
23 -IOW A 24 GROUND
25 -IOR A 26 GROUND
27 IDEIORDYA 28 GROUND
29 -DACKA 30 GROUND
31 AINT 32 GROUND
33 SA 1 34 Not Used
35 SA 0 36 SA 2
37 CS 0 38 CS 1
39 HD LED A 40 GROUND
Hard Disk (IDE1) Connector

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(2) 44-Pin Hard Disk (IDE) Connector (IDE2)
AR-B1479 also provides 44-pin connector (IDE2) interface to connect with the hard disk device. Furthermore, user
could also apply AR-B9462A (option) to connect with Compact Flash storage device.
44
43
1
2
Hard Disk (IDE2) Connector
3.2.2 FDD Port Connector (CN4)
The AR-B1479 provides a 34-pin header type connector for supporting up to two floppy disk drives.
To enable or disable the floppy disk controller, please use the BIOS Setup program.
1
2
Figure 0-1CN4: FDD Port connector
Pin Signal Pin Signal
1-33(odd)
GROUND 18 DIRECTION
2DRVEN 0 20 -STEP OUTPUT PULSE
4NOT USED 22 -WRITE DATA
6DRVEN 1 24 -WRITE GATE
8-INDEX 26 -TRACK 0
10 -MOTOR ENABLE 0
28 -WRITE PROTECT
12 -DRIVE SELECT 1 30 -READ DATA
14 -DRIVE SELECT 0 32 -SIDE 1 SELECT
16 -MOTOR ENABLE 1
34 DISK CHANGE
Table 0-1FDD Pin Assignment
Pin Signal Pin Signal
1-RESET 2GROUND
3DATA 7 4DATA 8
5DATA 6 6DATA 9
7DATA 5 8DATA 10
9DATA 4 10 DATA 11
11 DATA 3 12 DATA 12
13 DATA 2 14 DATA 13
15 DATA 1 16 DATA 14
17 DATA 0 18 DATA 15
19 GROUND 20 NOT USED
21 IDEDREQ 22 GROUND
23 -IOW A 24 GROUND
25 -IOR A 26 GROUND
27 IDEIORDYA 28 GROUND
29 -DACKA 30 GROUND
31 AINT 32 GROUND
33 SA 1 34 Not Used
35 SA 0 36 SA 2
37 CS 0 38 CS 1
39 HD LED A 40 GROUND
41 VCC 42 VCC
43 GROUND 44 Not Used

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3.2.3 Ethernet RJ-45 Connector (LAN1)
The LAN1 RJ-45&LED headers are the standard network headers. The following table is the pin assignment.
18
PIN (LAN1) FUNCTION
1TPTX+
2TPTX -
3TPRX+
4Not Used
5Not Used
6TPRX -
7Not Used
8Not Used
RJ-45 Pin Assignment
3.2.4 PS/2 Mouse Connector (CN2 & PS1)
To use the PS/2 interface, an adapter cable has to be connected to the CN2 (6-pin header type) connector. This
adapter cable is mounted on a bracket and is included in your AR-B1479 package. The connector for the PS/2
KB/mouse is a Mini-DIN 6-pin connector. Pin assignments for the PS/2 port connector are as follows:
KBCLK
VCC
KBDAT
MSDAT
6
5
4
3
2
1
GND
MSCLK
1
2
3
4
5
6
CN2 6 Pin Mini-DIN
PS1
1 KBDAT
3 GND
2 MSDAT
6 MSCLK
4 VCC
5 KBCLK
Figure 0-2CN2 & PS1: PS/2 Mouse Connector
3.2.5 PS-ON Header (CN1)
1. PS-ON
2.VCC
3.5VSB
CN1
3.2.6 Reset Header (J1)
The J1 is a reset switch. Shorting these two pins will reset the system.
2
1
J1
nWhen AT power supplier is applied, jumper 2&3 should
be tied together. (Factory preset)
nWhen ATX power supplier is applied, pin1&pin 3 should
be connect to proper location of ATX power supplier.

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3.2.7 Power Connector (PWR1)
The PWR1 is a 4-pin power connector. It’s the standard connector on all Acrosser boards.
2 GND
3 GND
4 +5V
1 +12V
VDC
PWR1
PWR1: 4-Pin Power Connector
3.2.8 CRT Connector (DB1)
DB1: CRT Connector
3.2.9 LCD Supported Voltage LCD1 Select (JP1)
(Only for AR-B1479B)
6
4
2
5
3
1
6
4
2
5
3
1
3.3V (Factory Preset) 5V
Figure 0-3JP1: LCD Supported Voltage LCD1 Select
DB1(CRT Connector)
6
10
15
11 1
2
3
4
5
1 Red
2 Green
3 Blue
13 Horizontial
14 Vertical Sync
4, 9, & 11 Not used
5 & 10 Ground
6, 7 & 8 AGND
12 DDC DATA
15 DDC CLOCK