AR-B1790
INDUSTRIAL GRADE
CPU BOARD
User’ s Guide
Edition: 1.03
Book Number: AR-B1790-03.1121
Table of Contents
0. PREFACE............................................................................................................................................... 2
0.1 COPYRIGHT NOTICE AND DISCLAIMER.....................................................................................................................................2
0.2 WELCOME TO THE AR-B1790 CPU BOARD................................................................................................................................2
0.3 BEFORE YOU USE THIS GUIDE...................................................................................................................................................2
0.4 RETURNING YOUR BOARD FOR SERVICE.................................................................................................................................2
0.5 TECHNICAL SUPPORT AND USER COMMENTS........................................................................................................................2
0.6 STATIC ELECTRICITY PRECAUTIONS ........................................................................................................................................3
1. INTRODUCTION..........................................................................................................................................................4
1.1 SPECIFICATIONS ....................................................................................................................................................................4
1.2 PACKING LIST................................................................................................................................................................................5
2. INSTALLATION........................................................................................................................................................... 6
2.1 AR-B1790'S LAYOUT .....................................................................................................................................................................6
2.2 CPU INSTALLATION ......................................................................................................................................................................8
2.3 CLEAR CMOS (JP6).......................................................................................................................................................................9
2.4 INSTALL DDR SDRAM SYSTEM MEMORY..................................................................................................................................9
3. CONNECTION........................................................................................................................................................... 10
3.1 IDE DISK DRIVE CONNECTOR (IDE1, IDE2) .......................................................................................................................10
3.2 SERIAL PORTS (COM2, COM3, COM4)................................................................................................................................11
3.3 COM3 RS-232/RS-485 SELECT (JP19, JP20).......................................................................................................................12
3.4 COM4 RS-232/RS-485 SELECT (JP21, JP22).......................................................................................................................13
3.5 PS2 KEYBOARD & MOUSE (PS/1)........................................................................................................................................13
3.6 USB CONNECTOR (USB1, USB2, USB3) ...................................................................................................................................14
3.7 FAN POWER CONNECTOR.........................................................................................................................................................14
3.8 DUAL ETHERNET PORT (PT3)....................................................................................................................................................14
3.9 PARALLEL & COM1 & VGA PORT (PT1) ....................................................................................................................................15
3.10 FLOPPY DRIVE CONNECTOR (FDD1) .....................................................................................................................................15
3.11 GPIO PORT (GPIO1)..................................................................................................................................................................16
3.12 ATX POWER CONNECTOR (PWR1).........................................................................................................................................16
3.13 POWER CONNECTOR (PWR2).................................................................................................................................................16
3.14 DUAL LVDS CONNECTOR (LVDS1, LVDS2)............................................................................................................................17
LVDS1 17
3.15 LVDS PANEL VOLTAGE SELECT (JP8)....................................................................................................................................18
3.16 CONTROL LVDS PANEL BACK-LIGHT (JP9)............................................................................................................................18
3.17 COM VOLTAGE SELECT (JP11, JP12, JP13)...........................................................................................................................18
3.18 MINI PCI SLOT (PCI1)................................................................................................................................................................18
3.19 PCI SLOT (PCI2).........................................................................................................................................................................18
3.20 IRDA HEADER (IR1)...................................................................................................................................................................18
3.21 CLEAR CMOS (JP6)...................................................................................................................................................................19
3.22 FRONT PANEL (JP7)..................................................................................................................................................................19
3.23 COMPACT FLASH (CF1)............................................................................................................................................................20
3.24 GAME/MINI PORT AND AUDIO CONNECT...............................................................................................................................20
3.25 CD-IN CONNECTOR (CD-IN).....................................................................................................................................................21
3.26 CPU SPEED SELECT (JP5).......................................................................................................................................................21
3.27 CF VOLTAGE SELECT (JP23)...................................................................................................................................................21
3.28 KB/MS VOLTAGE SELECT (JP2)...............................................................................................................................................21
4. WATCHDOG TIMER ................................................................................................................................................. 22
4.1 WATCHDOG TIMER SETTING ....................................................................................................................................................22
5. BIOS CONSOLE........................................................................................................................................................23
5.1 BIOS SETUP OVERVIEW.............................................................................................................................................................23
5.2 STANDARD CMOS SETUP..........................................................................................................................................................24
5.3 ADVANCED CMOS SETUP..........................................................................................................................................................25
5.4 ADVANCED CHIPSET SETUP.....................................................................................................................................................27
5.5 POWER MANAGEMENT..............................................................................................................................................................28
5.6 PCI/PLUG AND PLAY...................................................................................................................................................................29
5.7 PERIPHERAL SETUP...................................................................................................................................................................30
5.8 AUTO-DETECT HARD DISKS......................................................................................................................................................31
5.9 PASSWORD SETTING.................................................................................................................................................................31
5.10 LOAD DEFAULT SETTING.........................................................................................................................................................31
5.10.1 Auto Configuration with Optimal Setting.............................................................................. 32
5.10.2 Auto Configuration with Fail Safe Setting............................................................................ 32
5.11 BIOS EXIT...................................................................................................................................................................................32
5.12 BIOS UPDATE ............................................................................................................................................................................32
APPENDIX A. ADDRESS MAPPING............................................................................................................................33
IO ADDRESS MAP..............................................................................................................................................................................33
APPENDIX B. INTERRUPT REQUEST (IRQ)............................................................................................................... 34
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0. PREFACE
0.1 COPYRIGHT NOTICE AND DISCLAIMER
This document is copyrighted, 2002, by Acrosser Technology Co., Ltd. All rights are reserved. No part of this
manual may be reproduced, copied, transcribe d, 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 or original manufacturer.
Acrosser Technology assumes no responsibility or warranty with respect to the content in this manual and
specifically disclaims any implied warranty of merchantabilit y or fitness for any particular purpose. Furthermore,
Acrosser Technology reserves the right to make improvements to the products described in this manua l at any
times without notice. Such revisions will be posted on the Internet (WWW.ACROSSER.COM)
Possession, use, or copy of the software described in this publication is authorized onl y pursuant to 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 owners.
0.2 WELCOME TO THE AR-B1790 CPU BOARD
This guide introduces the Acrosser AR-B1790 CPU Board.
Use information provided in this manual describes this card’s functions and features. It also helps you start, set up
and operate your AR-B1790. General system information can also be found in this publication.
0.3 BEFORE YOU USE THIS GUIDE
Please refer to the Chapter 3, “Setting System,” in this guide, if you have not already installed this AR-B1790.
Check the packing list before you install and make sure the accessories are completely included.
AR-B1790 CD provides the newest information regarding the CPU card. Please refer to the files of the enclose d
utility CD. It contains the modification and hardware & software information, and adding the description or
modification of product function after manual printed.
0.4 RETURNING YOUR BOARD FOR SERVICE
If your board requires any services, contact the distributor or sales representative from whom you purchase d 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 shipping container for this purpose.
You can help assure efficient servicing for your product by following these guidelines:
1. Include your name, address, daytime telephone, facsimile number and E-mail.
2. A description of the system configuration and/or software at the time of malfunction.
3. A brief description of the problem occurred.
0.5 TECHNICAL SUPPORT AND USER COMMENTS
Users 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 any way 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: Sales@acrosser.com
acrosser@tp.globalnet.com.tw
as soon as possible.
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0.6 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. It is, therefore, important to observe basic
precautions whenever you use or handle computer comp onents. Although areas with humid climates are much
less prone to static build-up, it is always best to safeguar d against acci dents 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. INTRODUCTION
Welcome to the AR-B1790 Embedded ATX Single Board Computer. The AR-B1790 board is Embedded ATX form
factor board, which comes equipped with high performanc e Intel® Pentium 4 Process or with the Intel® a dvanced
chipset the Intel® 845GV GMCH and ICH4 (Intel® 82801DB). This product is designed for the system
manufacturers, integrators, or VARs that want to provide all the performance, reliability , and quality at a reasonable
price.
In addition, the AR-B1790 provides on chip VGA. The VGA, which provides up to 1600x1200 resolution. The VGA
memory is share main memory.
AR-B1790 have two network controller on board, uses Intel® 82551QM and Intel® 82562ET LAN controller, a fully
integrated 10/100BASE-TX solution with high performance networking functions and Alert-on-LAN features.
1.1 SPECIFICATIONS
CPU:
–Support Intel Pentium 4 Northwood（Socket 478）processor
–Support 533MHz and 400MHz FSB
–Support Intel Pentium 4 CPUs up to 2.8GHz
DMA channels: 7
Interrupt levels: 15
Chipset:
–Intel® 845GV【Integrated 2D / 3D graphics accelerator and support PC2100（DDR266）technology】
–Intel ICH4 chipset（82801DB）I/O Controller
RAM memory:
–Support two 184-pin DDR DIMM sockets
–Support PC200∕266 DDR SDRAM
–Support up to 2GB DRAM（Max）
Display Interface: CRT－D-SUB 15-pin female connecotr
Dual LVDS(2 channels)－for 36/48 bit or 18/24 bit(single channel) LVDS LCD Panel
2x13x2.00mm pin-header connector
On-board IDE Interface: Two IDE Controller on Intel ICH4 PCI chipset provides IDE HDD/CD-ROM（Ultra
DMA33/ATA66/ATA100）operation modes
Floppy disk drive interface: 2.88 MB, 1.44MB, 1.2MB, 720KB, or 360KB floppy disk drive.
C. F. : Supports one socket for Compact Flash Type II interface
Series ports: –On-board D-SUB 9-pin male external port for COM1 with RS-232C/Touch Screen (rear I/O
panel) uses 2.0mm 3-pin JST connector
–On-board 2x5x2.54mm pin-header for COM2 connectors with RS-232C/IrDA（IrDA uses
1x5x2.54mm pin-header connector）
–On-board Two 2x5x2.54mm pin-header connectors for COM3 & COM4 with RS-232C/
RS-485
Parallel Port: On-board one D-SUB 25-pin female external port for LPT1 , supports SPP/EPP/ECP modes
(rear I/O panel)
IrDA port: Supports IrDA (HPSIR) and ASK (Amplitude Shift Keyed) IR port multiplexed on COM2
USB port: –On-board two external port for 4 USB 2.0/1.1 ports (rear I/O panel)
–On-board one 2x5x2.54mm pin-header connectors for 2 additional USB 2.0/1.1 ports
Audio: onboard AC’97 Codec, On-board 2-Channel AC97 provided by 82801DB Audio Jacks: Line-in,
Line-out, Mic-in (rear I/O panel)
Watchdog timer: Software programmable 1~63sec.
VGA Controller: Built in Intel 845GV Chipset
Ethernet: –Integrated Intel Kinnereth 10/100Mbps provided by 82801DB South Bridge, with RJ-45 (90
degree) connector built-in LED (rear I/O panel)
–On-board intel 82551 with RJ-45 (90 degree) connector built-in LED (rear I/O panel)
K/B & Mouse: On-board PS/2 Keyboard and Mouse 6-pin Mini-DIN external connector
Power Connector: ATX & The Pentium 4 ATX power include another 2x2 pin+12V input connector
Power Req. : +5V@ 2A and +12V@ 5A maximum, on-board ATX12 power input connector
Operating Temperature: 0° ~ 60℃ (CPU needs Cooler)
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1.2 PACKING LIST
In addition to this User's Manual, the AR-B1790 package includes the following items:
The quick setup manual
AR-B1790 Embedded ATX Single Board
Software utility CD x 1
FDD Cable x 1 (Optional)
5.25” IDE HDD ATA 100Cable x 1(Optional)
2.5” IDE HDD Cable x 1(Optional)
Serial port Cable x 3(Optional)
Processor
VR
VGA
Connector
2 Intel DVO
Ports
IDE Primary
IDE Secondary
UDMA/100
USB PORT 1-6
USB2.0
USB
FirmWare Hub
Floppy
Game Port
BLOCK DIAGRAM
478-PIN P4 PROCESSOR
ADDR
ADDR
Keyboard
Mouse
CTRL
AGTL+ BUS
CTRL
GMCH
BROOKDALE-GV
ICH4
SIO1
Parallel
DATA
DATA
SIO2
Serial 1
AC'97 LINK
Serial 2
CK_408
DDR266
Modules
PCI CNTRL
PCI ADDR/DATA
Serial 3
PCI CONN 1
AC'97
CODEC
Serial 4
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2. INSTALLATION
This chapter describes how to install the AR-B1790. At first, the layout of AR-B1790 is sho wn, and the unpacking
information that you should be careful is described. The jumpers and switches setting for the AR-B1790’s
configuration are as below.
2.1 AR-B1790'S LA YOUT
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2.2 CPU INSTALLATION
This main board supports Intel Pentium 4/Celeron, Socket 478 series CPU. Please follow the step as below:
Be careful of CPU orientation when you plug it into CPU socket.
Pull up the CPU socket lever and up to 90°
Locate Pin 1 in the socket and look for a black dot or cut edge on the CPU upper interface. Match Pin 1 and
cut edge, then insert into the CPU socket.
8
Press down the CPU socket lever and finish CPU installation.
The Intel Pentium 4/Celeron processor requires a set of heatsink/fan to ensure proper cooling of processor. If
heatsink/fan have not been already bundled with your CPU, you must purchase the heatsink/fan separately and
have it installed. Plug the cable through the heatsink/fan in the CPU fan power connector located nearby. Note that
there are seceral types of CPU fan connector. Normally, if your main board supports the hard ware monitoring
function, a 3-pin fan power connector should allow your system to detect the CPU fan’s speed.
2.3 CLEAR CMOS (JP6)
If want to clear the CMOS Setup (for example when you forgot the password, please c lear the setu p and then s et
the password again.), you should close the pin 2-3 about 3 seconds, then open again, set back to normal
operation mode, close the pin 1-2.
1
3
JP6 FUNCTION
1-2 ON
2-3 ON Clear CMOS
Normal Operation
(Factory Preset)
2.4 INSTALL DDR SDRAM SYSTEM MEMORY
To install memory, insert DDR SDRAM memory module(s) in DIMM slot(s), Note that DDR SDRAM module are
directional and will not go in the DIMM slot unless properly oriented. After the module is fully inserted into the
DIMM slot, lift the chips of both sides of the DIMM slot to lock the module in place.
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3. CONNECTION
This chapter describes how to connect peripherals, switches and indicators to the AR-B1790 board.
3.1 IDE DISK DRIVE CONNECTOR (IDE1, IDE2)
IDE1: Primary IDE Connector
•
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 the hard disk drive’s 40-pin connector.
2 40
1 39
Pin Signal Pin Signal
1 -RESET 2 GROUND
3 DATA 7 4 DATA 8
5 DATA 6 6 DATA 9
7 DATA 5 8 DATA 10
9 DATA 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 N.C
21 PDDREQ 22 GROUND
23 -PDIOW 24 GROUND
25 -PDIOR 26 GROUND
27 PIORDY 28 GROUND
29 -PDDACK 30 GROUND
31 IRQ14 32 N.C
33 PDA1 34 PD66/100
35 PDA0 36 PDA2
37 -PDCS1 38 -PDCS3
39 HLEDP 40 GROUND
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