Table of Contents 0. PREFACE..................................2 0.1 COPYRIGHT NOTICE AND DISCLAIMER .............................2 0.2 WELCOME TO THE AR-B1891 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 ........................3 0.6 STATIC ELECTRICITY PRECAUTIONS ............................3 1.
This guide introduces the Acrosser AR-B1891 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-B1891. General system information can also be found in this publication.
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.
Type II socket for its slave channel. Other I/O features include four USB ports connector and two USB port using pin headers. Expansion slots composed of one PCI and one Mini PCI slot. AR-B1891 uses a 20-pin ATX power and a 4 pin +12V input connector.
1.2 SPECIFICATIONS Model Name AR-B1891 CPU Type Intel Pentium M Processor, Ultra Low Voltage, at HFM core frequency of 600MHz ~ 2.0GHz ( Socket 478 ) CPU Voltage 0.700 ~ 1.708V CPU Frequency 400MHz GMCH : Intel 82855GME, 732-pin Micro-FCBGA Chipset ICH4 :...
2. INSTALLATION This chapter describes how to install the AR-B1891. At first, the layout of AR-B1891 is shown, and the unpacking information that you should be careful is described. The jumpers and switches setting for the AR-B1891’s configuration are as below.
2.2 CPU INSTALLATION ® ® The AR-B1891 embedded board supports a Socket 478 processor socket for Intel Pentium M or ® Celeron M processors. The processor socket comes with a screw to secure the processor. As shown in the left picture below, loosen the screw first before inserting the processor.
2.3 MEMORY INSTALLATION The AR-B1891 embedded board supports two DDR memory sockets for a maximum total memory of 2GB in DDR memory type. The memory module capacities supported are 64MB, 128MB, 256MB, 512MB and 1GB. The following table lists the supported DDR DIMM configurations. Intel 855GME supports configurations defined in the JEDEC DDR DIMM specification only (A,B,C).
3. CONNECTION The connectors on AR-B1891 allows you to connect external devices such as USB devices, serial port drives, hard disk devices, printers, etc. The following table lists the connectors on AR-B1891 and their respective functions. 3.1 PS2 KEYBOARD & MOUSE(KBMS1)...
3.3 EXTERNAL USB HEADER(USB3) The following table shows the pin outs of the USB pin headers connectors. Overall, the two pin headers support four USB ports(USB 2.54 compliant). SIGNAL SIGNAL USB4- USB5- USB4+ USB5+ USB3 3.4 PARALLEL PORT CONNECTOR(LPT1) The parallel port allows connection of a printer, scanner and other peripheral devices. LPT1 SIGNAL SIGNAL...
3.5 SERIAL PORT CONNECTOR(COM1) Devices like mouse, modems …etc, can be connected to serial port. COM1 SIGNAL SIGNAL DCDA DSRA RXDA RTSA TXDA CTSA DTRA 3.6 EXTERNAL SERIAL PORT HEADER(COM2~COM6) The following table describes the pin out assignments of this connector. SIGNAL SIGNAL DCDB...
SIGNAL SIGNAL DCDE DSRE RXDE RTSE TXDE CTSE DTRE N.C. DCDF DSRF RXDF RTSF COM5, COM6 TXDF CTSF DTRF N.C. 3.7 VGA CONNECTOR (VGA1) Monitor can be connected to VGA port. VGA1 SIGNAL SIGNAL GREEN BLUE N.C. N.C. HSYNC VSYNC 3.8 RJ- 45 &...
3.9 DVI-D CONNECTOR(CN1) Monitor can be connected to DVI-D port. SIGNAL SIGNAL TMDS_TX2N TMDS_TX2P N.C. N.C. TMDS_CLK TMDS_DATA VSYNC TMDS_TX1N TMDS_TX1P N.C. N.C. TMDS_HPD TMDS_TX0N TMDS_TX0P N.C. N.C. TMDS_TXCP TMDS_TXCN 3.10 AUDIO LINE OUT⁄LINE IN⁄MIC HEADER(J4) Include Line out, Line in, and MIC. Devices like CD-ROM, walkman etc. can be connected to line in. Connect the speaker, earphone to line out.
3.12 HARD DISK(IDE)CONNECTOR (IDE1, IDE2) An IDE device connects to the computer via an IDE connector. One IDE connector can connect to one IDE cable, and the single IDE cable can then connect to two IDE devices (hard drive or optical drive). If you wish to connect two IDE devices, please set the jumper on one IDE device as Master and the other as Slave.
3.14 COMPACT FLASH CONNECTOR MASTER⁄SLAVE SELECT HEADER(JP3) Set the jumper on one compact flash device as Master and the other as Slave. SIGNAL 1-2 ON MASTER MODE SLAVE MODE 1-2 OFF (Factory Preset) 3.15 CPU CLOCK SELECT HEADER(JCLK1) SIGNAL 1-2 ON 133 MHZ 100 MHZ JCLK1...
3.18 COMS BATTERY HEADER(JBAT1) You may clear the COMS data to its default values by this jumper. To clear COMS, temporarily short pins 1-2. To prevent improper use of this header, we do not include a jumper on it. SIGNAL NORMAL OPERATION 1-2 ON (Factory Preset)...
3.26 ATX⁄ATX_12V POWER CONNECTOR(ATX1, PW1) With the use of the power connector, the power supply can enough stable power to all the components on the board. Before connecting the power connector, please make sure that all components and devices are properly installed.
4. WATCHDOG TIMER CONFIGURATION The WDT (Watch Dog Timer) is used to generate a variety of output signals after a user programmable count. The WDT is suitable for use in the prevention of system lock-up, such as when software becomes trapped in a deadlock.
5. BIOS CONSOLE This chapter describes the AR-B1891 BIOS menu displays and explains how to perform common tasks needed to get up and running, and presents detailed explanations of the elements found in each of the BIOS menus. The following topics are covered:...
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Date Setup The date format is: DAY:SUN to SAT Month:1 to 12 Date:1 to 31 Year:1999 to 2099 To set the date, highlight the “Date” field and use the 【PageUp】/【PageDown】or 【+】/【-】keys to set the current time. Time Setup The time format is: Hour:SUN to SAT Minute:00 to 59 Second:00 to 59...
5.2 ADVANCED CHIPSET SETUP This section allows you to configure and improve your system and follows you to set up some system features according to your preference. Advanced Chipset Setup APIC Mode APIC stands for Advanced Programmable Interrupt Controller. The default setting is Disabled. Quick Power On Self Test When enabled, this field speeds up the Power On Self Test(POST)after the system is turned on.
5.3 POWER SETUP Use this main to specify your setting for power management. Power Setup ACPI Function Enable this function to support ACPI(Advance Configuration and Power Interface). ACPI Suspend Type ( ) ( ) ( ) The options for this field are S1 and S3 .
5.4 PERIPHERALS SETUP This option controls the configuration of the board’s chipset. Control keys for this screen are the same as for the previous screen. Peripherals Setup Onboard Serial Port 1 Onboard Serial Port 2 Onboard Serial Port 3 Onboard Serial Port 4 Onboard Serial Port 5 Onboard Serial Port 6 These fields allow you to select the on board serial ports and their addresses.
USB Controller The options for this field are Enabled and Disabled. By default, the field is set to Enabled. USB 2.0 Controller The options for this field are Enabled and Disabled. By default, the field is set to Enabled. In order to use USB 2.0, necessary OS drivers must be installed first.
5.6 PC HEALTH SETUP This section shows the parameters in determining the PC Health Status. These parameters include temperatures, fan speeds, voltages. PC Health Status Temperature / Voltage These fields are parameters of the hardware monitoring function feature of the motherboard. The values are read-only values as monitored by the system and show the PC health status.
5.7 BOOT SETUP This section is used to exit the BIOS main menu. After making your changes, you can either save them or exit the BIOS menu and without saving the new values PCI / Plug And Play First / Second / Third Boot Device These fields determine the device that the system searches first for an operating system.
5.8 EXIT SETUP This section is used to configure exit mode. Exit Setup Save & Exit Setup This option allow you determine whether or not to accept the modifications. If you type “Y”, You will quit the setup utility and save all changes into the CMOS memory. If you type “N”, you will return to setup utility.
The chips can be electronically reprogrammed, allowing you to upgrade your BIOS firmware without removing and installing chips. The AR-B1891 provides the FLASH BIOS update function for you to easily to update to a newer BIOS version. Please follow these operating steps to update to new BIOS:...
APPENDIX A. ADDRESS MAPPING IO ADDRESS MAP Each peripheral device in the system is assigned a set of I/O port addresses which also becomes the identity of the device. The following table list the I/O addresses used. I/O MAP ASSIGNMENT 0000 - 000F Direct Memory Access contrlooer 0020 - 0021...
APPENDIX B. INTERRUPT REQUEST (IRQ) Peripheral devices use interrupt request lines to notify CPU for the services required. The following table shows the IRQ used by the devices on board. Level HARDWARE USING THE SETTING System timer Standard 101/102-Key or Microsoft Natural Keyboard Programmable interrupt controller (COM2) Communication Port...
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