User Manual
PCA-6781
ISA Celeron® M Half-sized SBC
with VGA/LCD/LVDS/10/100
Ethernet/USB 2.0 and SSD
Copyright
The documentation and the software included with this product are copyrighted 2008
by Advantech Co., Ltd. All rights are reserved. Advantech Co., Ltd. reserves the right
to make improvements in the products described in this manual at any time without
notice. No part of this manual may be reproduced, copied, translated or transmitted
in any form or by any means without the prior written permission of Advantech Co.,
Ltd. Information provided in this manual is intended to be accurate and reliable. However, Advantech Co., Ltd. assumes no responsibility for its use, nor for any infringements of the rights of third parties, which may result from its use.
Acknowledgements
Award is a trademark of Award Software International, Inc.
VIA is a trademark of VIA Technologies, Inc.
IBM, PC/AT, PS/2 and VGA are trademarks of International Business Machines Cor-
poration.
Intel and Pentium are trademarks of Intel Corporation.
Microsoft Windows® is a registered trademark of Microsoft Corp.
RTL is a trademark of Realtek Semi-Conductor Co., Ltd.
ESS is a trademark of ESS Technology, Inc.
UMC is a trademark of United Microelectronics Corporation.
SMI is a trademark of Silicon Motion, Inc.
Creative is a trademark of Creative Technology LTD.
All other product names or trademarks are properties of their respective owners.
For more information on this and other Advantech products, please visit our websites
at:
http://www.advantech.com
http://www.advantech.com/eplatform
For technical support and service, please visit our support website at:
http://www.advantech.com/support
This manual is for the PCA-6781.
Part No. 2002678100 Edition 1
Printed in China September 2008
PCA-6781 User Manual ii
Packing List
Before you begin installing your card, please make sure that the following materials
have been shipped:
! 1 x PCA-6781 series half-sized single board computer
! 1 x Startup manual
! 1 x CD for utility, drivers, and manual (in PDF format)
! 1 x Y cable for PS/2 Keyboard, PS/2 Mouse p/n: 1700060202
! 1 x E-IDE (HDD) cable p/n: 1701400452
! 1 x FDD cable (600 mm) p/n: 1701340705
! 1 x Printer+COM (RS-232) cable w/ bracket p/n: 1700008891
! 1 x ATX power cable 20P/7P 10 cm p/n: 1703070101
! Jumper pack p/n: 9689000002
! 1 x ATX feature cable (3-pin 2.54 mm to 2.0 mm) p/n: 1700002343
! 1 x USB 4 port cable w/ bracket p/n: 1700008887
If any of these items are missing or damaged, contact your distributor or sales representative immediately.
Additional Information and Assistance
1. Visit the Advantech website at www.advantech.com where you can find the lat-
est information about the product.
2. Contact your distributor, sales representative, or Advantech's customer service
center for technical support if you need additional assistance. Please have the
following information ready before you call:
! Product name and serial number
! Description of your peripheral attachments
! Description of your software (operating system, version, application software,
etc.)
! A complete description of the problem
! The exact wording of any error messages
iii PCA-6781 User Manual
Declaration of Conformity
FCC
This device complies with the requirements in part 15 of the FCC rules: Operation is
subject to the following two conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that
may cause undesired operation
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications. Operation of this device in a residential area is likely to cause harmful interference in which
case the user will be required to correct the interference at his/her own expense. The
user is advised that any equipment changes or modifications not expressly approved
by the party responsible for compliance would void the compliance to FCC regulations and therefore, the user's authority to operate the equipment.
Caution! There is a danger of a new battery exploding if it is incorrectly installed.
Do not attempt to recharge, force open, or heat the battery. Replace the
battery only with the same or equivalent type recommended by the manufacturer. Discard used batteries according to the manufacturer’s
instructions.
PCA-6781 User Manual iv
Table 1.1: PCA-6781 Comparison Table
Model CPU LAN
PCA-6781VE-M0A1E Intel Celeron M 600MHz (512KB L2) Intel 82551QM
PCA-6781VE-S0A1E Intel Celeron M 1.0GHz (0 L2) Intel 82551QM
PCA-6781LV-M0A1E Intel Celeron M 600MHz (512KB L2) -
Table 1.2: PCA-6781 Memory Compatibility Table
Model Size Speed Type
Apacer 128MB DDR266 DDR SODIMM N 77.10920.110 AM1 22561615A-7A
256MB DDR333 DDR SODIMM N 77.10634.190 Infineon HYB25D256807BT-
Kingston 128MB DDR333 DDR SODIMM N KVR333X64SC25/128 ELPIDA SINGAPORE
256MB DDR266 DDR SODIMM N hynix 417A
256MB DDR333 DDR SODIMM N hynix 346AA
256MB DDR400 DDR SODIMM N KVR400X64SC3A/256 0406PR V58C2256164SBT5
512MB DDR266 DDR SODIMM N KVR266X64SC25/512 hynix 336AA
512MB DDR333 DDR SODIMM N KVR333X64SC25/512 Infineon HYB25D256800BC-
512MB DDR400 DDR SODIMM N Infineon HYB25D512160BE-
Transcend 128MB DDR333 DDR SODIMM N TS1DSG11800-6S 96SD-
256MB DDR333 DDR SODIMM N TS3DSM11800-6I 96SD-
512MB DDR266 DDR SODIMM N TS6DSJ12202-7S 96SD-
512MB DDR333 DDR SODIMM N TS6DSM11800-6Y 96SD-
1GB DDR333 DDR SODIMM N TS2DSA18702-6S 96SD-1G333NN-TRSamsung 719 K4H510838D-
ECC
Vendor PN Advantech PNMemory
128M333NN-TR
256M333NN-TR
512M266NN-TR2
512M333NN-TR
5
DD2516AKTA-6B-E
HY5DU561622CT-H
HY5DU561622CT-J
HY5DU121622AT-H
6
5
Samsung 734 K4H561638HUCCC(16×16)
INFINEON
HYB25DC512160CE5C(32×16)
Samsung 719 K4H510838DUCCC(32×8)
hynix 716A HY5DU22CTPD43
ZCCC(64×8)
v PCA-6781 User Manual
PCA-6781 User Manual vi
Contents
Table 1.1: PCA-6781 Comparison Table..................................... v
Table 1.2: PCA-6781 Memory Compatibility Table ..................... v
Chapter 1 General Information ............................1
1.1 Introduction ............................................................................................... 2
1.2 Features.................................................................................................... 2
1.3 Specifications............................................................................................ 3
1.3.1 Standard SBC Functions .............................................................. 3
1.3.2 Display Interface ........................................................................... 3
1.3.3 Solid State disk ............................................................................. 3
1.3.4 Ethernet interface.......................................................................... 4
1.3.5 Mechanical and Environmental..................................................... 4
1.4 Board layout: dimensions.......................................................................... 5
Figure 1.1 Board Layout: Dimensions (Component Side) ...........5
Figure 1.2 Board Layout: Dimensions (Solder Side) ................... 6
Chapter 2 Installation............................................7
2.1 Jumpers .................................................................................................... 8
Table 2.1: Jumpers...................................................................... 8
2.2 Connectors................................................................................................ 8
Table 2.2: Connectors ................................................................. 8
2.3 Locating Connectors (component side) .................................................... 9
Figure 2.1 Jumper & Connector Locations .................................. 9
2.4 Locating Connectors (solder side) ............................................................ 9
Figure 2.2 Connectors (Component Side) ................................... 9
2.5 Setting Jumpers ...................................................................................... 10
2.5.1 LVDS Panel Power Select (J1) ................................................... 11
Table 2.3: LVDS Panel Power Select........................................ 11
2.5.2 LVDS VBR Select (J2) ................................................................ 11
Table 2.4: LVDS VBR Select..................................................... 11
2.5.3 AT/ATX Power choose jumper(J3) ............................................. 11
Table 2.5: AT/ATX Power choose jumper ................................. 11
2.5.4 Clear CMOS (J4) ........................................................................ 12
Table 2.6: Clear CMOS ............................................................. 12
2.5.5 COM2 RS-232/422/485 Select (J5) ............................................ 12
Table 2.7: COM2 RS-232/422/485 Select ................................. 12
2.6 Installing SODIMMs ................................................................................ 13
2.7 Main Power Connector (CN16)............................................................... 13
2.8 Printer port Connector (CN3) .................................................................. 13
2.9 CompactFlash Socket............................................................................. 14
2.9.1 CompactFlash (CN24) ................................................................ 14
2.10 Floppy Connector (CN2) ......................................................................... 14
2.10.1 Connecting the floppy drive ........................................................ 14
2.11 IDE Connector (CN4).............................................................................. 15
2.11.1 Connecting the hard drive........................................................... 15
2.12 VGA/LVDS interface connections ........................................................... 15
2.12.1 CRT display Connector (CN10) .................................................. 15
2.12.2 LVDS LCD panel Connector (CN8) ............................................ 15
2.12.3 LCD Inverter Connector (CN6) ................................................... 15
2.13 USB Connectors (CN9,CN11)................................................................. 16
2.14 Ethernet configuration............................................................................. 16
2.14.1 LAN Connector (CN13)............................................................... 16
vii PCA-6781 User Manual
2.14.2 Network boot............................................................................... 16
2.15 HDD LED/Reset/Power Button (CN1)..................................................... 16
2.15.1 HDD LED (Pin 1&Pin 2).............................................................. 16
2.15.2 POWER LED (Pin3 & Pin4) ........................................................ 16
2.15.3 Suspend led (PIN 5&Pin 6)......................................................... 16
2.15.4 Reset (Pin7&Pin8) ...................................................................... 16
2.15.5 Power Button (Pin9&Pin10)........................................................ 17
2.16 COM port Connector (CN14,CN15)........................................................ 17
2.17 MINI Keyboard Connector (CN19).......................................................... 17
2.18 External Keyboard Connector (CN18) .................................................... 17
2.19 Audio Interface Connector (CN7)............................................................ 17
2.20 PC/104 connector(CN12)........................................................................ 17
2.21 IR connector(CN5).................................................................................. 17
2.22 Negative Power Input (CN17) ................................................................. 18
2.23 +12 V FAN connector (CN22)................................................................. 18
2.24 ATX Suspend Power connector(CN23) .................................................. 18
2.25 System FAN connector (CN25) .............................................................. 18
2.26 SMBus connector (CN26)....................................................................... 18
2.27 Hardware Fail LED (CN27)..................................................................... 18
Chapter 3 BIOS Operation ................................. 19
3.1 BIOS Introduction.................................................................................... 20
3.2 BIOS Setup............................................................................................. 20
3.2.1 Main Menu .................................................................................. 21
3.2.2 Standard CMOS Features .......................................................... 22
3.2.3 Advanced BIOS Features ........................................................... 24
3.2.4 Advanced Chipset Features ....................................................... 26
3.2.5 Integrated Peripherals ................................................................ 28
3.2.6 Power Management Setup ......................................................... 29
3.2.7 PnP/PCI Configurations.............................................................. 31
3.2.8 PC Health Status ........................................................................ 32
3.2.9 Frequency/Voltage Control ......................................................... 33
3.2.10 Load Optimized Defaults ............................................................ 34
3.2.11 Set Password.............................................................................. 34
3.2.12 Save & Exit Setup ....................................................................... 36
3.2.13 Quit Without Saving .................................................................... 36
Chapter 4 Driver Installation.............................. 37
4.1 Driver Introduction................................................................................... 38
4.2 Driver Installation .................................................................................... 38
4.2.1 Step 1- Install Intel INF Update Driver for Windows XP/2000 .... 38
4.2.2 Step 2- Install Intel Graphic Driver for Windows XP/ 2000 ......... 38
4.2.3 Step 3- Install Intel Ethernet Driver for Windows XP/2000 ......... 38
Appendix A Watchdog Timer................................ 39
A.1 Watchdog Programming ......................................................................... 40
Appendix B Pin Assignments............................... 43
B.1 Connectors.............................................................................................. 44
B.1.1 HDD LED/Reset/Power Button (CN1) ........................................ 44
Table B.1: HDD LED/Reset/Power Button (CN1) ...................... 44
B.1.2 Primary IDE Connector (CN4) .................................................... 44
Table B.2: Primary IDE Connector (CN4) .................................. 44
PCA-6781 User Manual viii
B.1.3 Floppy Connector(CN2).............................................................. 45
Table B.3: Floppy Connector (CN2)........................................... 45
B.1.4 Printer Port Connector (CN3)...................................................... 45
Table B.4: Printer Port Connector (CN3) ................................... 45
B.1.5 IR Connector (CN5) .................................................................... 46
Table B.5: IR Connector (CN5) .................................................. 46
B.1.6 LCD Inverter Connector (CN6) ................................................... 46
Table B.6: LCD Inverter Connector (CN6) ................................. 46
B.1.7 Audio Interface (CN7) ................................................................. 46
Table B.7: Audio Interface (CN7)............................................... 46
B.1.8 LVDS Connector (CN8) .............................................................. 47
Table B.8: LVDS Connector (CN8) ............................................ 47
B.1.9 USB port 1, 2 Connector (CN9) .................................................. 47
Table B.9: USB port 1,2 Connector (CN9)................................. 47
B.1.10 D-SUB VGA Connector (CN10) .................................................. 47
Table B.10:D-SUB VGA Connector (CN10)................................ 47
B.1.11 USB port 3,4 Connector (CN11) ................................................. 48
Table B.11:USB port 3,4 Connector (CN11)............................... 48
B.1.12 PC 104 Connector ...................................................................... 48
B.1.13 LAN RJ45 Connector (CN13) ..................................................... 48
Table B.12:LAN RJ45 Connector (CN13) ................................... 48
B.1.14 COM port 1 (RS-232)(CN15) ...................................................... 48
Table B.13:COM port 1 (RS-232) (CN15)................................... 48
B.1.15 COM port 2 (RS-232/422/485)(CN14) ........................................ 49
Table B.14:COM port 2 (RS-232/422/485) (CN14)..................... 49
B.1.16 ATX Power Connector (CN16).................................................... 49
Table B.15:ATX Power Connector (CN16) ................................. 49
B.1.17 KB/MS Connector (CN19)........................................................... 49
Table B.16:KB/MS Connector (CN19) ........................................ 49
B.1.18 External KB/mouse Connector (CN18) ....................................... 49
Table B.17:External KB/mouse Connector (CN18)..................... 49
B.1.19 ISA Gold Finger (CN21).............................................................. 50
B.1.20 ATX Suspend Power Connector (CN23) .................................... 50
Table B.18:ATX Suspend Power Connector (CN23) .................. 50
B.1.21 Negative Power Input (CN17) ..................................................... 50
Table B.19:Negative Power Input (CN17)................................... 50
B.1.22 CF Connector (CN24) ................................................................. 50
B.1.23 +12V FAN connector(CN22) ....................................................... 50
Table B.20:+12 V FAN connector (CN22) .................................. 50
B.1.24 System FAN connector (CN25) .................................................. 50
Table B.21:System FAN connector (CN25) ................................ 50
B.1.25 SMBUS connector (CN26).......................................................... 50
Table B.22:SMBUS connector (CN26) ....................................... 50
B.1.26 HW Fail LED (CN27).................................................................. 51
Table B.23:HW Fail LED (CN27) ............................................... 51
B.2 Jumpers .................................................................................................. 51
B.2.1 LVDS Voltage Choose (JP1) ...................................................... 51
Table B.24:LVDS Voltage Choose (JP1) .................................... 51
B.2.2 Clear CMOS (J1) ........................................................................ 51
Table B.25:CLEAR CMOS (J1)................................................... 51
B.2.3 232/422/485 SEL (J2)................................................................. 51
Table B.26:232/422/485 SEL (J2)............................................... 51
Appendix C System Assignments ........................53
C.1 System I/O Ports ..................................................................................... 54
Table C.1: System I/O Ports ...................................................... 54
C.2 1st MB Memory Map............................................................................... 55
Table C.2: 1st MB Memory Map ................................................ 55
ix PCA-6781 User Manual
C.3 DMA Channel Assignments.................................................................... 55
Table C.3: DMA Channel Assignments ..................................... 55
C.4 Interrupt Assignments............................................................................. 56
Table C.4: Interrupt Assignments .............................................. 56
PCA-6781 User Manual x
Chapter 1
1 General Information
This chapter gives background
information on the PCA-6781.
Sections include:
! Introduction
! Features
! Specifications
! Board layout and dimensions
1.1 Introduction
The PCA-6781 series is a half-sized ISA bus CPU card designed with powerful Intel
Celeron M processor, with Intel 852GM and ICH4 chipset, which supports Dynamic
Video Memory Technology. For maximum performance, PCA-6781 also supports one
200 Pin SODIMM socket and DDR memory up to 1 GB. These chipsets provide an
optimized on-board integrated graphics solution.
Other onboard features include1 EIDE, 1 FDD, 1 LPT, 4 USB 2.0, 2 COM ports (1 x
RS-232 and 1 x RS-232/422/485), PS/2 KeyBoard/ mouse, watchdog. The SSD solution supports Type I/II CompactFlash cards.
This product uses a Intel 852GM that supports VGA/LVDS interface, 2 channel (36bit) LVDS LCD panel. PCA-6781 supports AC97 audio with the addition of the
optional PCM-231A-00A1E audio module.
The Ethernet interface supports 10/100Base-T Intel 82551QM.
Its dimension follows standard ISA slot PC, this makes it can match with all half-sized
chassis and can operate in high vibration environment.
1.2 Features
! Intel Embedded Celeron M Processor 600MHz and 1.0 GHz
! Fanless operation at 0 ~ 60° C
! On-board PCI VGA/LVDS display
! Supports 100Base-T Ethernet on board
! Supports 4 x USB 2.0 ports
! Supports 2 Channel 36 bit LVDS for LCD
! Supports 400 MHz Front Side Bus
! Accepts 128/256/512 bit technologies DDR 200/266 DRAM
PCA-6781 User Manual 2
1.3 Specifications
1.3.1 Standard SBC Functions
! CPU: Supports Intel. Embedded Celeron M Processor, up to 1.0 GHz
! System chipsets: Intel 852GM +ICH4
! BIOS: Award 4 Mbit Flash BIOS
! System memory: 200 pin SODIMM x 1, supports double data rate (DDR) 128
MB to 1 GB, accepts 128/256/512 bit technologies DDR 200/266 DRAM
! 2nd cache memory: 0 KB or 512 KB on Celeron® M
! Enhanced IDE Interface: Supports two enhanced IDE channels. Primary chan-
nel supports ATA-100 mode; Secondary channel only supports ATA-33 and PIO
mode. CFC card occupies secondary IDE master
! COM Ports: Two COM ports: COM1: RS-232; COM2: RS-232/422/ 485
! Printer Ports: One printer port, supports SPP/EPP/ECP
! Keyboard/Mouse Connector: Supports standard PC/AT Keyboard and a PS/2
Mouse
! Power Management: Supports Power Saving Mode, including Normal/ Stan-
dard/Suspend modes. APM 1.2 compliant.
! FDD interface: Supports up to one FDD device
! Watchdog Timer: 0 ~ 255 Sec. System reset or IRQ11
! Expansion Interface: 16 bit ISA Slot
! Battery: Lithium 3V/196 mAH
! USB: 4 USB ports, USB 2.0 compliant
Chapter 1 General Information
1.3.2 Display Interface
! Chipset: Intel 852GM
! Memory size: Shared up to 64 MB, supports DVMT
! LVDS Interface: Supports 2 channel (36-bit) LVDS LCD Panel
! Display modes:
– CRT Modes: 1600 X 1200 at 85 Hz;
– LCD Modes: up to UXGA panel resolution with frequency range from 25
MHz to 112 MHz
1.3.3 Solid State disk
! Supports CompactFlash Card Type I/II
3 PCA-6781 User Manual
1.3.4 Ethernet interface
! Chipset: Intel 82551QM 10/100Mbps LAN Chip
! Connection: on-board RJ-45 connector
! Interface: IEEE 802.3u (100Base-T) protocol compatible
! Built-in Boot ROM: 82551QM
! I/O address switchless setting
1.3.5 Mechanical and Environmental
! Dimensions (L x W): 185 x 122 mm (7.3” x 4.8”)
! Power Supply Voltage: +5 V
! Power Consumption:
– Max:
2.26 A @ 5 V, 0.5 A @ 12 V
– Typical:
1.22 A @ 5 V (w/Celeron M 1 G + 256 MB RAM)
0.01 A @ 12 V (w/Celeron M 1 G + 256 MB RAM)
! Operating temperature: 0 ~ 60° C (32 ~ 140° F) operation
! Operating humidity: 0% ~ 90% Relative Humidity, non-condensing
± 5%, +12 V ± 5%
Note! If your power supply doesn’t have +12 V output (+5 V only), PCA-6781
needs to go T-part number to add the components for the 5 V to 12 V
converting circuit, but LVDS and PC104 also cannot be used within +5 V
only.
PCA-6781 User Manual 4
1.4 Board layout: dimensions
Chapter 1 General Information
Figure 1.1 Board Layout: Dimensions (Component Side)
5 PCA-6781 User Manual
Figure 1.2 Board Layout: Dimensions (Solder Side)
PCA-6781 User Manual 6
Chapter 2
2 Installation
This chapter explains the setup
procedures of PCA-6781 hardware, including instructions on
setting jumpers and connecting
peripherals, switches and indicators. Be sure to read all safety precautions before you begin the
installation procedure.
2.1 Jumpers
The PCA-6781 has a number of jumpers that allow you to configure your system to
suit your application. The table below lists the functions of the various jumpers.
Table 2.1: Jumpers
Label Function
J1 LVDS Voltage choose
J2 VBR
J3 AT/ATX Power choose jumper
J4 CLEAR CMOS
J5 232/422/485 SEL
2.2 Connectors
Onboard connectors link the PCA-6781 to external devices such as hard disk drives,
a keyboard, or floppy drives. The table below lists the function of each of the board’s
connectors.
Table 2.2: Connectors
Label Function
CN1 HDD LED/Reset/Power Button
CN2 Floppy Connector
CN3 Printer Port Connector
CN4 Primary IDE Connector
CN5 IR Connector
CN6 LCD Inverter Connector
CN7 Audio Interface Connector
CN8 LVDS Connector
CN9 USB port 1,2 Connector
CN10 D-SUB VGA Connector
CN11 USB port 3,4 Connector
CN12 PC104 Connector
CN13 LAN RJ45 Connector
CN14 COM port 2 (RS-232/422/485)
CN15 COM port 1 (RS-232)
CN16 Main Power Connector
CN17 Negative Power Input Connector
CN18 External KB/mouse Connector
CN19 KB/mouse Connector
CN20 +5 V FAN Connector
CN21 ISA Golden Finger
CN22 +12 V FAN Connector
CN23 ATX Suspend power connector
CN24 CF Connector
CN25 System Fan
CN26 SMBUS Connector
CN27 Hardware fail LED
PCA-6781 User Manual 8
2.3 Locating Connectors (component side)
CN1
CN4
CN2
CN6
CN8
CN3
CN7
CN26
CN3
Chapter 2 Installation
CN27
J1
J2
J3
J4
CN9
CN10
CN11
CN13
CN25
CN16
CN23
CN22
Figure 2.1 Jumper & Connector Locations
CN17
CN12
CN21
2.4 Locating Connectors (solder side)
CN24
DIMM1
J5
CN14
CN15
CN18
CN19
Figure 2.2 Connectors (Component Side)
9 PCA-6781 User Manual
2.5 Setting Jumpers
You may configure your card to match the needs of your application by setting jumpers. A jumper is a metal bridge used to close an electric circuit. It consists of two
metal pins and a small metal clip (often protected by a plastic cover) that slides over
the pins to connect them. To “close” a jumper, you connect the pins with the clip. To
“open” a jumper, you remove the clip. Sometimes a jumper will have three pins,
labeled 1, 2 and 3. In this case you would connect either pins 1 and 2, or 2 and 3.
The jumper settings are schematically depicted in this manual as follows:.
12 12
closed 2-3closedopen
closed 2-3closedopen
A pair of needle-nose pliers may be helpful when working with jumpers. If you have
any doubts about the best hardware configuration for your application, contact your
local distributor or sales representative before you make any changes. Generally, you
simply need a standard cable to make most connections.
PCA-6781 User Manual 10
2.5.1 LVDS Panel Power Select (J1)
Chapter 2 Installation
123
Table 2.3: LVDS Panel Power Select
Pin Function
1-2 (default) +3.3 V
2-3 +5 V
2.5.2 LVDS VBR Select (J2)
123
Table 2.4: LVDS VBR Select
Pin Function
1-2 High
2-3 Low
1 23
1 23
2.5.3 AT/ATX Power choose jumper(J3)
123
Table 2.5: AT/ATX Power choose jumper
Pin Function
1-2 (default) ATX Power
2-3 AT Power
1 23
11 PCA-6781 User Manual
2.5.4 Clear CMOS (J4)
Warning! To avoid damaging the computer, always turn off the power supply
before setting "Clear CMOS". Before turning on the power supply, set
the jumper back to "3.0 V Battery On".
This jumper is used to erase CMOS data and reset system BIOS
information.
The procedure for clearing CMOS is:
1. Turn off the system.
2. Short pin 2 and pin 3.
3. Turn on the system. The BIOS is now reset to its default setting.
123
Table 2.6: Clear CMOS
Pin Function
1-2 (default) Normal
2-3 Clear CMOS
2.5.5 COM2 RS-232/422/485 Select (J5)
1
3
5
Table 2.7: COM2 RS-232/422/485 Select
2
4
66
11
3
5
1 23
22
4
3
5
4
6
Pin Function
1-2 (default) RS-232
3-4 RS-422
5-6 RS-485
PCA-6781 User Manual 12
2.6 Installing SODIMMs
Note! The modules can only fit into a socket one way. The gold pins must
point down into the SODIMM socket.
1. The procedure for installing SODIMMs appears below. Please follow these
steps carefully.
2. Make sure that all power supplies to the system are switched off
3. Install the SODIMM card. Install the SODIMM so that its gold pins point down
into the SODIMM socket.
4. Slip the SODIMM into the socket at a 45 degree angle and care- fully fit the bot-
tom of the card against the connectors.
5. Gently push the SODIMM into a perpendicular position until the clips on the
ends of the SODIMM sockets snap into place.
6. Check to ensure that the SODIMM is correctly seated and all connector contacts
touch. The SODIMM should not move around in its socket.
Chapter 2 Installation
2.7 Main Power Connector (CN16)
Supplies main power (+5 V and +12 V) to PCA-6781, and it is a 7 pins power connector.
Important! Make sure that the ATX power supply can take at least a 10 mA load on
the 5 V standby lead (5 VSB). If not, you may have difficulty powering on
your system.
Note! If your power supply doesn’t have +12 V output (+5 V only), PCA-6781
needs to go T-part number to add the components for the 5 V to 12 V
converting circuit, but LVDS and PC104 also cannot be used within +5 V
only.
2.8 Printer port Connector (CN3)
Normally, the printer port is used to connect the card to a printer. The PCA-6781
includes a multi-mode (SPP/EPP/ECP) printer port accessed via CN4 and a 26-pin
flat-cable connector. You will need an adapter cable if you use a traditional DB-25
connector. The adapter cable has a 26-pin connector on one end, and a DB-25 connector on the other.
The printer port is designated as LPT1, and can be disabled or changed to LPT2 or
LPT3 in the system BIOS setup.
The printer port interrupt channel is designated to be IRQ7.
You can select ECP/EPP DMA channel via BIOS setup.
13 PCA-6781 User Manual
2.9 CompactFlash Socket
The PCA-6781 provides a 50-pin socket for CompactFlash card type I/II.
2.9.1 CompactFlash (CN24)
The CompactFlash card occupies a secondary IDE channel which can be enabled/
disabled via the BIOS settings.
2.10 Floppy Connector (CN2)
You can attach up to two floppy drives to the PCA-6781’s on-board con-troller. You
can use any combination of 5.25” (360 KB and 1.2 MB) and/ or 3.5” (720 KB, 1.44
MB, and 2.88 MB) drives.
A 34-pin daisy-chain drive connector cable is required for a dual-drive system. On
one end of the cable is a 34-pin flat-cable connector. On the other end are two sets of
floppy disk drive connectors. Each set consists of a 34-pin flat-cable connector (usually used for 3.5” drives) and a printed-circuit board connector (usually used for 5.25”
drives).
2.10.1 Connecting the floppy drive
1. Plug the 34-pin flat-cable connector into CN3. Make sure that the red wire corre-
sponds to pin one on the connector.
2. Attach the appropriate connector on the other end of the cable to the floppy
drive(s). You can use only one connector in the set. The set on the end (after the
twist in the cable) connects to the A: drive. The set in the middle connects to the
B: drive.
3. If you are connecting a 5.25” floppy drive, line up the slot in the printed circuit
board with the blocked-off part of the cable connector.
If you are connecting a 3.5” floppy drive, you may have trouble determining which pin
is number one. Look for a number printed on the circuit board indicating pin number
one. In addition, the connector on the floppy drive may have a slot. When the slot is
up, pin number one should be on the right. Check the documentation that came with
the drive for more information.
If you desire, connect the B: drive to the connectors in the middle of the cable as
described above.
In case you need to make your own cable, you can find the pin assignments for the
board’s connector in Appendix B.
PCA-6781 User Manual 14
2.11 IDE Connector (CN4)
The PCA-6781 provides one IDE channels to which you can attach up to two
Enhanced Integrated Device Electronics hard disk drives or CDROM to the PCA6781’s internal controller. The PCA-6781's IDE controller uses a PCI interface. This
advanced IDE controller supports faster data transfer, PIO Mode 3 or Mode 4, UDMA
33/66/100 mode.
2.11.1 Connecting the hard drive
Connecting drives is done in a daisy-chain fashion. It requires one of two cables (not
included in this package), depending on the drive size. 1.8" and 2.5" drives need a 1
x 44-pin to 2 x 44-pin flat-cable connector. 3.5" drives use a 1 x 44-pin to 2 x 40-pin
connector.
Wire number 1 on the cable is red or blue, and the other wires are gray.
1. Connect one end of the cable to CN2. Make sure that the red (or blue) wire cor-
responds to pin 1 on the connector, which is labeled on the board (on the right
side).
2. Plug the other end of the cable into the Enhanced IDE hard drive, with pin 1 on
the cable corresponding to pin 1 on the hard drive. (See your hard drive’s documentation for the location of the connector.)
Chapter 2 Installation
If desired, connect a second drive as described above.
Unlike floppy drives, IDE hard drives can connect to either end of the cable. If you
install two drives, you will need to set one as the master and one as the slave by
using jumpers on the drives. If you install only one drive, set it as the master.
2.12 VGA/LVDS interface connections
The PCA-6781’s display interface can drive conventional CRT displays and is capable of driving a wide range of LVDS flat panel displays as well. The board has two display connectors: one for standard CRT VGA monitors, and one for LVDS flat panel
displays.
2.12.1 CRT display Connector (CN10)
CN10 is a standard 15-pin D-SUB connector used for conventional CRT displays.
Users can drive a standard progressive scan analog monitor with pixel resolution up
to 1600 X 1200 at 85 Hz. Pin assignments for CRT display connector CN10 are
detailed in Appendix B.
2.12.2 LVDS LCD panel Connector (CN8)
PCA-6781 uses the Intel 852GM to supports single or dual-channel LVDS panels up
to UXGA panel resolution with frequency range from 25MHz to 112MHz.
The display mode can be 2 channels (2 x 18 bits) LVDS LCD panel displays Users
can connect to either an 18, 24 or 36 bits LVDS LCD with CN8.
2.12.3 LCD Inverter Connector (CN6)
The LCD inverter is connected to CN6 via a 5-pin connector to provide +5 V/+12 V
power to the LCD display.
15 PCA-6781 User Manual
2.13 USB Connectors (CN9,CN11)
The PCA-6781 board provides up to four USB (Universal Serial Bus) ports. This
gives complete Plug and Play, and hot attach/detach for up to 127 external devices.
The USB interfaces comply with USB specification Rev. 2.0, and are fuse protected.
The USB interface is accessed through the 5 x 2-pin flat-cable connector, CN9
(USB1, 2),CN11 (USB3, 4). You will need an adapter cable if you use a standard
USB connector. The adapter cable has a 5 x 2-pin connector on one end and a USB
connector on the other.
The USB interfaces can be disabled in the system BIOS setup.
2.14 Ethernet configuration
The PCA-6781 is equipped with a high performance 32-bit PCI-bus Ethernet interface which is fully compliant with IEEE 802.3u 10/ 100 Mbps CSMA/CD standards. It
is supported by all major network operating systems.
The PCA-6781 supports 10/100Base-T Ethernet connections with onboard RJ-45
connectors (CN13).
2.14.1 LAN Connector (CN13)
10/100Base-T or 1000Base-T connects to the PCA-6781 via a cable to a standard
RJ-45 connector.
2.14.2 Network boot
The Network Boot feature can be utilized by incorporating the Boot ROM image files
for the appropriate network operating system. The Boot ROM BIOS files are included
in the system BIOS.
2.15 HDD LED/Reset/Power Button (CN1)
Next, you may want to install external switches to monitor and control the PCA-6781.
These features are optional: install them only if you need them. CN1 is an 2 x 5 pin
header, 180 degree, male. It provides connections for reset and power & hard disk
indicator.
2.15.1 HDD LED (Pin 1&Pin 2)
The HDD LED indicator for hard disk access is an active low signal (24 mA sink rate).
2.15.2 POWER LED (Pin3 & Pin4)
+5 V POWER LED indicator would light when the power is on.
2.15.3 Suspend led (PIN 5&Pin 6)
Suspend led indicator would light when the computer is suspend.
2.15.4 Reset (Pin7&Pin8)
If you install a reset switch, it should be an open single pole switch.
Momentarily pressing the switch will activate a reset. The switch should
be rated for 10 mA, 5 V.
PCA-6781 User Manual 16
2.15.5 Power Button (Pin9&Pin10)
PCA-6781 also supports power on/off button.
2.16 COM port Connector (CN14,CN15)
The PCA-6781 provides two COM ports (COM1: RS-232 and COM2: RS-232/422/
485). CN14 supports COM2, CN15 supports COM1. And J5 is for COM RS-232/422/
485 selection. It provides connections for serial devices (a mouse, etc.) or a communication network. You can find the pin assignments for the COM port connector in
Appendix B.
2.17 MINI Keyboard Connector (CN19)
The PCA-6781 board provides a keyboard connector that supports both a keyboard
and a PS/2 style mouse. In most cases, especially in embedded applications, a keyboard is not used. If the keyboard is not present, the standard PC/AT BIOS will report
an error or fail during power-on self-test (POST) after a reset. The PCA-6781’s BIOS
standard setup menu allows you to select "All, but Keyboard" under the "Halt
On"selection. This allows no-keyboard operation in embedded system applications,
without the system halting under POST.
Chapter 2 Installation
2.18 External Keyboard Connector (CN18)
In addition to the Mini keyboard connector on the PCA-6781’s rear plate, there is an
additional onboard external keyboard connector, allowing for greater flexibility in system design.
2.19 Audio Interface Connector (CN7)
The Audio Interface link is a 10 pin connector, the PCA-6781 can support Audio with
the addition of optional PCM-231A-00A1. Detailed pin assignment refer to Appendix
B.
2.20 PC/104 connector(CN12)
The PCA-6781 is equipped with a 8/16 bit ISA signal PC/104 connector for future
expansion.
2.21 IR connector(CN5)
This connector supports the optional wireless infrared transmitting and receiving
module. This module mounts on the system case. You must configure the setting
through BIOS setup. Detailed pin definition you will find in Appendix B.
Note! When using PCA-6781's IR function, please remove J5 jumper.
17 PCA-6781 User Manual
2.22 Negative Power Input (CN17)
The PCA-6781 is equipped with a Negative Power Input connector providing -5 V
and -12 V power if your applications need.
2.23 +12 V FAN connector (CN22)
The PCA-6781 is equipped with a 3-pin FAN connector providing +12 V power for
CPU FAN. PCA-6781 is designed to Fanless, in general case, you won't need to connect CN22.
2.24 ATX Suspend Power connector(CN23)
The PCA-6781 can support an advanced soft power switch function, if an ATX power
supply is used. To enable the soft power switch function:
1. Get the specially designed ATX-to-EBX power cable
2. Connect the 3-pin plug of the cable to CN23 (ATX feature connector).
3. Connect the power on/off button to CN1.
Important Make sure that the ATX power supply can take at least a 10 mA load on the
5 V standby lead (5 VSB). If not, you may have difficulty powering on your system.
2.25 System FAN connector (CN25)
The PCA-6781 is equipped with a 3-pin FAN connector providing +12 V power for
system FAN.
2.26 SMBus connector (CN26)
The PCA-6781 is equipped with a 4-pin SMBus connector providing SMBus for
peripheral usage.
2.27 Hardware Fail LED (CN27)
The PCA-6781 is equipped with 2-pin hardware fail pin header to connector with
LED. If you connect CN27 with LED, LED will light when buzzer on PCA-6781 has a
warning noise.
PCA-6781 User Manual 18
Chapter 3
3 BIOS Operation
This chapter describes how to set
BIOS configuration data.
Sections include:
! BIOS Introduction
! BIOS Setup
3.1 BIOS Introduction
Advantech provide full-featured Award BIOS 6.0 and delivers the superior performance, compatibility and functionality that manufactures of Industry PC and Embedded boards, it’s many options and extensions let you customize your products to a
wide range of designs and target markets.
The modular, adaptable Award BIOS 6.0 supports the broadest range of third-party
peripherals and all popular chipsets, plus Intel, AMD, nVidia, VIA, and compatible
CPUs from 386 through Pentium and AMD Geode, K7 and K8 (including multiple processor platforms), and VIA Eden C3 and C7 CPU.
You can use Advantech’s utilities to select and install features to suit your designs for
customers need.
3.2 BIOS Setup
The PCA-6781 system has build-in Award BIOS with a CMOS SETUP utility which
allows user to configure required settings or to activate certain system features.
The CMOS SETUP saves the configuration in the CMOS RAM of the motherboard.
When the power is turned off, the battery on the board sup-plies the necessary power
to the CMOS RAM.
When the power is turned on, press the <Del> button during the BIOS POST (PowerOn Self Test) will take you to the CMOS SETUP screen.
Control Keys
< ↑ >< ↓ >< ← >< → >
<Enter> Select Item.
<Esc> Main Menu - Quit and not save changes into CMOS.
Page Up/+> Increase the numeric value or make changes.
<Page Down/-> Decrease the numeric value or make changes.
<F1> General help, for Setup Sub Menu.
<F2> Item Help.
<F5> Load Previous Values.
<F7> Load Optimized Default.
<F10> Save all CMOS changes.
Move to select item.
Sub Menu - Exit current page and return to Main Menu.
PCA-6781 User Manual 20
3.2.1 Main Menu
Press <Del> to enter Award BIOS CMOS Setup Utility, the Main Menu will appear on
the screen. Use arrow keys to select among the items and press <Enter> to accept or
enter the sub-menu.
Chapter 3 BIOS Operation
! Standard CMOS Features
This setup page includes all the items in standard compatible BIOS.
! Advanced BIOS Features
This setup page includes all the items of Award BIOS enhanced features.
! Advanced Chipset Features
This setup page includes all the Chipset configuration features.
! Integrated Peripherals
This setup page includes all onboard peripheral devices.
! Power Management Setup
This setup page includes all the Power Management features.
! PnP/PCI Configurations
This setup page includes PnP OS and PCI device configuration.
! PC Health Status
This setup page includes the system auto detect CPU and system temperature,
voltage, fan speed.
! Frequency/Voltage Control
This setup page includes CPU host clock control, frequency ratio and voltage.
! Load Optimized Defaults
This setup page includes Load system optimized value, and the system would
be in best performance configuration.
! Set Password
Establish, change or disable password.
! Save & Exit Setup
Save CMOS value settings to CMOS and exit BIOS setup.
! Exit Without Saving
Abandon all CMOS value changes and exit BIOS setup.
21 PCA-6781 User Manual
3.2.2 Standard CMOS Features
! Date
The date format is <weekday>, <month>, <day>, <year>.
Weekday From Sun to Sat, determined and displayed by BIOS only
Month From Jan to Dec
Day From 1 to 31
Year From 1999 through 2098
! Time
The times format in <hour> <minute> <second>, based on a 24-hour day.
! IDE Channel 0 Master/Slave
IDE HDD Auto-Detection Press “Enter” for automatic device detection.
! IDE Channel 1 Master/Slave
IDE HDD Auto-Detection Press “Enter” for automatic device detection.
! Drive A
The Item identifies the types of floppy disk drive A.
None No floppy drive installed
360K, 5.25" 5.25 inch PC-type standard drive; 360 K byte capacity
1.2M, 5.25" 5.25 inch AT-type high-density drive; 1.2 M byte capacity
720K, 3.5" 3.5 inch double-sided drive; 720 K byte capacity
1.44M, 3.5" 3.5 inch double-sided drive; 1.4 4M byte capacity
2.88M, 3.5" 3.5 inch double-sided drive; 2.88 M byte capacity.
PCA-6781 User Manual 22
! Halt on
The item determines whether the computer will stop if an error is detected during power up.
No Errors The system boot will not stop for any error
All Errors Whenever the BIOS detects a non-fatal error the system will be
stopped
All, But Keyboard The system boot will not stop for a keyboard error; it will stop for all
other errors (Default value)
All, But Diskette The system boot will not stop for a disk error; it will stop for all
other errors.
All, But Disk/Key The system boot will not stop for a keyboard or disk error; it will
stop for al other errors.
! Base Memory
The POST of the BIOS will determine the amount of base (or conventional)
memory installed in the system.
! Extended Memory
The POST of the BIOS will determine the amount of extended memory (above
1MB in CPU’s memory address map) installed in the system.
! Total Memory
This item displays the total system memory size.
Chapter 3 BIOS Operation
23 PCA-6781 User Manual
3.2.3 Advanced BIOS Features
! Blank Boot [Disabled] (* Advantech feature enhancement)
This item allows system only displays blank screen during BIOS Post stage.
! POST Beep [Enabled] (* Advantech feature enhancement)
This item allows system send out Beep sound during BIOS Post stage.
! CPU Feature
This item allows user to adjust CPU features, CPU ratio, VID and Thermal and
special feature like XD flag.
! Hard Disk Boot Priority
This item allows user to select boot sequence for system device HDD, SCSI,
RAID.
! Virus Warning [Disabled]
This item allows user to choose the VIRUS Warning feature for IDE Hard Disk
boot sector protection.
! CPU L3 Cache [Enabled]
This item allows user to enable CPU L3 cache.
! CPU L2 Cache ECC Checking [Enabled]
This item allows user to enable CPU L2 cache and ECC checking function.
! Quick Power On Self Test [Enabled]
This field speeds up the Power-On Self Test (POST) routine by skipping retesting a second, third and forth time. Setup setting default is enabled.
! First / Second / Third / Other Boot Drive
Floppy Floppy gets this priority.
LS120 LS120 gets this priority.
Hard Disk Hard Disk gets this priority.
CDROM CDROM gets this priority.
ZIP ZIP gets this priority.
USB-FDD USB-FDD gets this priority.
USB-ZIP USB-ZIP gets this priority.
USB-CDROM USB-CDROM gets this priority.
USB-HDD USB-HDD gets this priority.
LAN LAN gets this priority.
PCA-6781 User Manual 24
Disabled Disable this boot function
! Swap Floppy Drive [Disabled]
This item enables users to swap floppy “A” and “B” identified without change
hardware cable connection.
! Boot Up Floppy Seek [Disabled]
When enabled, the BIOS will seek the floppy “A” drive one time
! Boot Up NumLock Status [Disabled]
This item enables users to activate the Number Lock function upon system
boot.
! Typematic Rate Setting
This item enables users to set the two typematic controls items.
This field controls the speed at
Chapter 3 BIOS Operation
Typematic Rate
(Chars/Sec)
Typematic Delay
(Msec)
This item controls the speed with which the system autorepeats
keystrokes.
Eight settings are 6, 8, 10, 12, 15, 20, 24 and 30.
This item sets the time delay before auto repeat kicks in.
Four delay rate options are 250, 500, 750 and 1000.
! Security Option [Setup]
System Correct password required before system can boot, and for Setup
access.
Setup Correct password required for Setup access.
! MPS Version Control for OS[1.4]
This item sets the operating system multiprocessor support version.
! OS Select For DRAM > 64M[Non-OS2]
Select OS2 only if system is running OS/2 operation system with greater than
64 MB of RAM on the system.
! Video BIOS Shadow [Enabled]
Enabled copies Video BIOS to shadow RAM improves performance.
! Full Screen Logo Show [Enabled]
Show full screen logo during post stage, and the Logo picture can be customization.
! Small Logo (EPA) Show [Enabled]
Show EPA logo during system post stage.
! Summary Screen Show [Enabled]
Show system status in Summary screen page.
25 PCA-6781 User Manual
3.2.4 Advanced Chipset Features
Note! This "Advanced Chipset Features" option controls the configuration of
the board's chipset, this page is developed by Chipset independent, for
control chipset register setting and fine tune system performance. It is
strongly recommended that only technical users make changes to the
default settings.
! DRAM Timing Selectable [By SPD]
This item enables users to set the optimal timings for items 2 through 5, system
default setting of “By SPD” to follow the SPD information and ensure the system
running in stable and optimal performance.
! CAS Latency Time[2.5]
This item enables users to set the timing delay in clock cycles before SDRAM
start a read command after receiving it.
! Active to Precharge Delay[7]
This item enables users to control the memory back’s minimum row active time
(tRAS), system default is setting to “7” to reference value.
! DRAM RAS# to CAS# Delay[3]
This item enables users to set the timing of the transition from RAS (row
address strobe) to CAS (column address strobe) as both rows and column are
separately addressed shortly after DRAM is refreshed.
! DRAM RAS# Precharge[3]
This item enables users to set the DRAM RAS# precharge timing, system
default is setting to “3” to reference value.
! DRAM Data Integrity Mode [Non-ECC]
This item enables users to set the DRAM Type of Error data correction, system
default is setting to “Non-ECC” to reference value.
! MGM Core Frequency [Auto Max 266 MHz]
This item enables users to set the operation speed of internal Graphic Chip FSB
and DRAM, system default is setting to “Auto Max 266 MHz” to reference value.
! System BIOS Cacheable [Enabled]
This item allows the system BIOS to be cached to allow faster execution and
better performance.
PCA-6781 User Manual 26
! Video BIOS Cacheable [Disabled]
This item allows the video BIOS to be cached to allow faster execution and better performance.
! Memory Hole At 15 M-16 M [Disabled]
This item reserves 15 MB-16 MB memory address space to ISA expansion
cards that specifically require the setting. Memory from 15 MB-16 MB will be
unavailable to the system because of the expansion cards can only access
memory at this area.
! DRAM Data Integrity Mode [Non-ECC]
This item enables users to set the DRAM Type of Error data correction, system
default is setting to “Non-ECC” to reference value.
! Delayed Transaction [Enabled]
This items enables users to actives PCI delayed Transaction feature, it can
have better PCI performance and meet PCI 2.1 specifications.
! Delay Period to Thermal [16 Min]
This items enables users to select the time period of system detect CPU Thermal, system default is setting to “16 Min” to reference value.
! AGP Aperture Size (MB) [64]
This item enables users to select size of system memory to support AGP
graphic usage, system default is setting to “64 MB” to reference value.
! On-Chip VGA Setting
This platform support On-Chip VGA function and will continue to VGA related
setting.
! On-Chip VGA [Enabled]
This item enables users to Enabled or Disabled On-Chip VGA device, system
default is setting to “Enabled” to reference value.
! On-Chip Frame Buffer Size [32 MB]
This Item enables users to set Video Memory size, system default is setting to
“32 MB” to reference value.
! Boot Display [VBIOS Default]
This Item enables users to set Initial display device of system boot up, system
default is setting to “VBIOS Default” to reference value.
! Panel Number [640 X 480]
This item enables users to set the Resolution of Panel Type, system default is
setting to “640 X 480” to reference value.
Chapter 3 BIOS Operation
27 PCA-6781 User Manual
3.2.5 Integrated Peripherals
Note! This "Integrated Peripherals" option controls the configuration of the
board's chipset, includes IDE, ATA, SATA, USB, AC97, MC97 and
Super IO and Sensor devices; this page is chipset dependent.
! OnChip IDE Device
This item enables users to set the OnChip IDE device status, includes enable
IDE devices and setting PIO and DMA access mode, and some of new chipset
also support for SATA device (Serial-ATA).
! Onboard Device
This item enables users to set the Onboard device status, includes enable USB,
AC97, MC97 and LAN devices.
! Super IO Device
This item enables users to set the Super IO device status, includes enable
Floppy, COM, LPT, IR and control GPIO and Power fail status.
PCA-6781 User Manual 28
3.2.6 Power Management Setup
Note! This "Power management Setup" option configure system to most effec-
tively saving energy while operating in a manner consistent with your
intended computer use.
Chapter 3 BIOS Operation
! ACPI Function [Enabled]
This item defines the ACPI (Advanced Configuration and Power Management)
feature that makes hardware status information available to the operating system, and communicate PC and system devices for improving the power management.
! ACPI Suspend Type[S1 (POS)]
This item allows user to select sleep state when suspend.
S1(POS) The suspend mode is equivalent to a software power down.
! Power Management [Min Saving]
This item allows user to select system power saving mode.
Min Saving Minimum power management. Suspend Mode=1 hr.
Max Saving Maximum power management. Suspend Mode=1 min.
User Define Allows user to set each mode individually. Suspend Mode= Dis-
abled or 1 min ~1 hr.
! Video Off Method [DPMS]
This item allows user to determine the manner is which the monitor is blanked.
V/H SYNC+Blank This option will cause system to turn off vertical and horizontal syn-
chronization ports and write blanks to the video buffer.
Blank Screen This option only writes blanks to the video buffer.
DPMS Initial display power management signaling.
! Video Off In Suspend [Yes]
This item allows user to turn off Video during system enter suspend mode.
! Suspend Type [Stop Grant]
This item allows user to determine the suspend type.
! Modem use IRQ[3]
29 PCA-6781 User Manual
This item allows user to determine the IRQ which the MODEM can use.
! Suspend Mode [1 Hour]
This item allows user to determine the time of system inactivity, all devices
except the CPU will be shut off.
! HDD Power Down Mode[15 Min]
This item allows user to determine the time of system inactivity, the hard disk
drive will be powered down.
! Soft-Off by PWR-BTTN [Enabled]
This item allows user to define function of power button.
Instant-Off Press power button then Power off instantly.
Delay 4 Sec Press power button 4 sec. to Power off.
! Wake-Up by PCI card [Enabled]
This item allows user to defines PCI cards to wake up the system from the suspend mode.
! Power On by Ring [Enabled]
This item allows user to define the system will resume by activating of modem
ring.
! Resume by Alarm [Disabled]
This item allows user to enable and key in Date/time to power on system.
Disabled Disable this function.
Enabled Enable alarm function to power on system.
Data (of month) Alarm1-31
Time (HH:MM:SS) Alarm(0-23) : (0-59) : 0-59)
PCA-6781 User Manual 30
3.2.7 PnP/PCI Configurations
Note! This "PnP/PCI Configurations" option is setting up the IRQ and DMA
(both PnP and PCI bus assignments.
Chapter 3 BIOS Operation
! Init Display First [PCI Slot]
This item is setting for start up Video output from PCI or Onboard device.
! Reset Configuration Data [Disabled]
This item allow user to clear any PnP configuration data stored in the BIOS.
! Resources Controlled By [Auto (ESCD)]
IRQ Resources This item allows you respectively assign an interrupt for IRQ-3, 4,
5, 7, 9, 10, 11, 12, 14, and 15.
DMA Resources This item allows you respectively assign an interrupt for DMA, 0, 1,
2, 3, 4, 5, 6, and 7.
! PCI VGA Palette Snoop [Disabled]
The item is designed to solve problems caused by some non-standard VGA
cards. A built-in VGA system does not need this function.
! INT Pin 1~8 Assignment [Auto]
The interrupt request (IRQ) line assigned to a device connected to the PCI interface on your system.
31 PCA-6781 User Manual
3.2.8 PC Health Status
Note! This "PC Health Status" option controls the Thermal, FAN and Voltage
status of the board; this page is chipset dependent.
! Current System/CPU Temp [Show Only]
This item displays current system and CPU temperature.
! 3.3 V / 1.05 V / 2.5 V / 5 V / 12 V [Show Only]
This item displays current CPU and system Voltage.
PCA-6781 User Manual 32
3.2.9 Frequency/Voltage Control
Note! This "Frequency/Voltage Control" option controls the CPU Host and PCI
frequency; this page is chipset dependent. Some items will show up
when you install a processor which supports those functions.
Chapter 3 BIOS Operation
! Auto Detect PCI Clk [Enabled]
This item enables users to set the PCI Clock by system automatic detection or
by manual.
! Spread Spectrum [Disabled]
This item enables users to set the spread spectrum modulation.
! CPU Host/SRC/PCI Clock [Default]
This item enables users to set the CPU Host and PCI clock by system automatic detection or by manual.
33 PCA-6781 User Manual
3.2.10 Load Optimized Defaults
Note! Load Optimized Defaults loads the default system values directly from
ROM. If the stored record created by the Setup program should ever
become corrupted (and therefore unusable). These defaults will load
automatically when you turn the PCA-6781 system on.
3.2.11 Set Password
Note! To enable this feature, you should first go to the Advanced BIOS Fea-
tures menu, choose the Security Option, and select either Setup or System, depending on which aspect you want password protected. Setup
requires a password only to enter Setup. System requires the password
either to enter Setup or to boot the system. A password may be at most
8 characters long.
PCA-6781 User Manual 34
To Establish Password
1. Choose the Set Password option from the CMOS Setup Utility main menu and
press <Enter>.
2. When you see “Enter Password”, enter the desired password and press
<Enter>.
3. At the “Confirm Password” prompt, retype the desired password, then press
<Enter>.
4. Select Save to CMOS and EXIT, type <Y>, then <Enter>.
To Change Password
1. Choose the Set Password option from the CMOS Setup Utility main menu and
press <Enter>.
2. When you see “Enter Password”, enter the existing password and press
<Enter>.
3. You will see “Confirm Password”. Type it again, and press <Enter>.
4. Select Set Password again, and at the “Enter Password” prompt, enter the new
password and press <Enter>.
5. At the “Confirm Password” prompt, retype the new password, and press
<Enter>.
6. Select Save to CMOS and EXIT, type <Y>, then <Enter>.
Chapter 3 BIOS Operation
To Disable Password
1. Choose the Set Password option from the CMOS Setup Utility main menu and
press <Enter>.
2. When you see “Enter Password”, enter the existing password and press
<Enter>.
3. You will see “Confirm Password”. Type it again, and press <Enter>.
4. Select Set Password again, and at the “Enter Password” prompt, please don’t
enter anything; just press <Enter>.
5. At the “Confirm Password” prompt, again, don’t type in anything; just press
<Enter>.
6. Select Save to CMOS and EXIT, type <Y>, then <Enter>.
35 PCA-6781 User Manual
3.2.12 Save & Exit Setup
Note! Typing "Y" will quit the BIOS Setup Utility and save user setup value to
CMOS.
Typing "N" will return to BIOS Setup Utility.
3.2.13 Quit Without Saving
Note! Typing "Y" will quit the BIOS Setup Utility without saving to CMOS.
Typing "N" will return to BIOS Setup Utility.
PCA-6781 User Manual 36
Chapter 4
4 Driver Installation
This chapter gives you the driver
installation information on the
PCA-6781 Half-size CPU card.
Sections include:
! Driver Introduction
! Driver Installation
4.1 Driver Introduction
The CD shipped with PCA-6781 should contain the drivers below; please follow this
sequence to complete the driver installation.
1. Install Intel INF Update Driver for Windows XP/2000.
2. Install Intel Graphic Driver for Windows XP/2000.
3. Install Intel 82551QM Ethernet Driver for Windows XP/2000.
Note! For Windows XP Embedded, Windows CE 5.0 and Linux support,
please contact sales representative or technical person. Note: Downloading the update for Windows XP or Windows 2000 may be required
for enabling USB 2.0 function. Details information please refers to below
web link.
http://www.microsoft.com/whdc/system/bus/USB/USB2support.mspx
4.2 Driver Installation
Insert the PCA-6781 CD into the CD-ROM device, and follow below installation process from Step 1 to Step 4.
4.2.1 Step 1- Install Intel INF Update Driver for Windows XP/2000
1. Click on the “Chipset” folder and double click the “*.exe” file.
2. Follow the instructions that the driver installation wizard shows.
3. The system will help you to complete the driver installation.
4.2.2 Step 2- Install Intel Graphic Driver for Windows XP/ 2000
1. Click on the “VGA” folder and double click the “*.exe” file.
2. Follow the instructions that the driver installation wizard shows.
3. The system will help you to complete the driver installation.
4.2.3 Step 3- Install Intel Ethernet Driver for Windows XP/2000
1. Click on the “LAN” folder and double click the “*.exe” file.
2. Follow the instructions that the driver installation wizard shows.
3. The system will help you to complete the driver installation.
PCA-6781 User Manual 38
Appendix A
A Watchdog Timer
The board is equipped with a
watchdog timer that resets the
CPU or generates an interrupt if
processing comes to a standstill
for any reason. This feature
ensures system reliability in
industrial standalone or
unmanned environments.
A.1 Watchdog Programming
;The SCH3114 Runtime base I/O address is 800h
;Setting WatchDog time value location at offset 66h
;If set value "0", it is mean disable WatchDog function.
Superio_GPIO_Port = 800h
mov dx,Superio_GPIO_Port + 66h
mov al,00h
out dx,al
.model small
.486p
.stack 256
.data
SCH3114_IO EQU 800h
.code
org 100h
.STARTup
;====================================================
;47H
;enable WDT function bit [3:2]=11
;====================================================
mov dx,SCH3114_IO + 47h
mov al,8EH
out dx,al
;====================================================
;65H
;bit [1:0]=Reserved
;bit [6:2]Reserve=00000
;bit [7] WDT time-out Value Units Select
;Minutes=0 (default) Seconds=1
;====================================================
mov dx,SCH3114_IO + 65h ;
mov al,080h
out dx,al
;====================================================
;66H
;WDT timer time-out value
;bit[7:0]=0~255
;====================================================
mov dx,SCH3114_IO + 66h
PCA-6781 User Manual 40
mov al,01h
out dx,al
;====================================================
;bit[0] status bit R/W
;WD timeout occurred =1
;WD timer counting = 0
;====================================================
mov dx,SCH3114_IO + 68h
mov al,01h
out dx,al
.exit
END
Appendix A Watchdog Timer
41 PCA-6781 User Manual
PCA-6781 User Manual 42
Appendix B
B Pin Assignments
This appendix contains information of a detailed or specialized
nature.
B.1 Connectors
B.1.1 HDD LED/Reset/Power Button (CN1)
Table B.1: HDD LED/Reset/Power Button (CN1)
Pin Signal Pin Signal
1 +5 V 2 HDD_LED
3 PWR_LED 4 GND
5 SUSPEND 6 5 VSB
7 RESET 8 GND
9 5 VSB 10 PWR_Button
B.1.2 Primary IDE Connector (CN4)
Table B.2: Primary IDE Connector (CN4)
Pin Signal Pin Signal
1 IDE Reset 2 GND
3D7 4D8
5D6 6D9
7D5 8D10
9D4 10D11
11 D3 12 D12
13 D2 14 D13
15 D1 16 D14
17 D0 18 D15
19 GND 20 NC
21 DRQ 22 GND
23 IOW 24 GND
25 IOR 26 GND
27 IORDY 28 Cable Select
29 DACK 30 GND
31 IRQ14 32 NC
33 A1 34 DIAG#
35 A0 36 A2
37 CS#1 38 CS#3
39 Active 40 GND
PCA-6781 User Manual 44
B.1.3 Floppy Connector(CN2)
Table B.3: Floppy Connector (CN2)
Pin Signal Pin Signal
1GND 2RWC#
3GND 4NC
5GND 6NC
7 GND 8 INDEX#
9GND 10MOA#
11 GND 12 NC
13 GND 14 DSA#
15 GND 16 NC
17 GND 18 DIR#
19 GND 20 STEP#
21 GND 22 WD#
23 GND 24 WE#
25 GND 26 TRAK0#
27 GND 28 WP#
29 GND 30 RDATA#
31 GND 32 HEAD#
33 GND 34 DSKCHG#
Appendix B Pin Assignments
B.1.4 Printer Port Connector (CN3)
Table B.4: Printer Port Connector (CN3)
Pin Signal Pin Signal
1STB# 2 AFD#
3 D0 4 ERR#
5D1 6 INIT#
7D2 8 SLIN
9D3 10GND
11 D4 12 GND
13 D5 14 GND
15 D6 16 GND
17 D7 18 GND
19 ACK# 20 GND
21 BUSY 22 GND
23 PE 24 GND
25 SLCT 26 NC
45 PCA-6781 User Manual
B.1.5 IR Connector (CN5)
Table B.5: IR Connector (CN5)
Pin Signal Pin Signal
1+5 V 2 NC
3RX 4 GND
5TX
B.1.6 LCD Inverter Connector (CN6)
Table B.6: LCD Inverter Connector (CN6)
Pin Signal Pin Signal
1 +12 V output 2 GND
3 Back-light enable signal
output
5 +5 V output
B.1.7 Audio Interface (CN7)
4 Back-light VBR signal out-
put
Table B.7: Audio Interface (CN7)
Pin Signal Pin Signal
1 +5 V 2 BitCLK
3 Data in 4 GND
5 GND 6 Sync
7 Data out 8 ACRST
9 +5 V 10 SPKR
PCA-6781 User Manual 46
B.1.8 LVDS Connector (CN8)
Table B.8: LVDS Connector (CN8)
Pin Signal Pin Signal
1 GND 2 GND
3 LVDS0_D0+ 4 LVDS1_D0+
5 LVDS0_D0- 6 LVDS1_D0-
7 VDS0_D1+ 8 LVDS1_D1+
9 LVDS0_D1- 10 LVDS1_D1-
11 LVDS0_D2+ 12 LVDS1_D2+
13 LVDS0_D2- 14 LVDS1_D2-
15 LVDS0_CLK+ 16 LVDS1_CLK+
17 LVDS0_CLK- 18 LVDS1_CLK-
19 LVDS power 20 LVDS power
B.1.9 USB port 1, 2 Connector (CN9)
Table B.9: USB port 1,2 Connector (CN9)
Appendix B Pin Assignments
Pin Signal Pin Signal
1+5 V 2+5 V
3 USB0- 4 USB1-
5 USB0+ 6 USB1+
7GND 8GND
9GND 10NC
B.1.10D-SUB VGA Connector (CN10)
Table B.10: D-SUB VGA Connector (CN10)
Pin Signal Pin Signal
1R 2G
3B 4NC
5,6,7,8, 10,16,17 GND 11 NC
12 VGA_DDAT 13 HSYNC
14 VSYNC 15 VGA_DCLK
9+5 V_VGA
47 PCA-6781 User Manual
B.1.11 USB port 3,4 Connector (CN11)
Table B.11: USB port 3,4 Connector (CN11)
Pin Signal Pin Signal
1+5 V 2+5 V
3 USB2- 4 USB3-
5 USB2+ 6 USB3+
7GND 8GND
9 GND 10 NC
B.1.12PC 104 Connector
B.1.13LAN RJ45 Connector (CN13)
Table B.12: LAN RJ45 Connector (CN13)
Pin Signal Pin Signal
1 TX+ 2 TX-
3RX+ 4GND
5 GND 6 RX-
7 GND 8 GND
9 LILED 10 VCC_LAN
11 ACTLED 12 VCC_LAN
13 GND 14 GND
B.1.14COM port 1 (RS-232)(CN15)
Table B.13: COM port 1 (RS-232) (CN15)
Pin Signal Pin Signal
1 DCD# 2 RXD
3TXD 4DTR#
5GND 6DSR#
7RTS# 8CTS#
9RI#
PCA-6781 User Manual 48
B.1.15COM port 2 (RS-232/422/485)(CN14)
Table B.14: COM port 2 (RS-232/422/485) (CN14)
Pin Signal Pin Signal
1DCD 2DSR
3RXD 4RTS
5TXD 6CTS
7DTR 8RI
9GND 10GND
11 TXD485+ 12 TXD485-
13 RXD485+ 14 RXD485
B.1.16ATX Power Connector (CN16)
Table B.15: ATX Power Connector (CN16)
Pin Signal Pin Signal
1+5 V 2GND
3 GND 4 +12 V
5NC 6GND
7+5 V
Appendix B Pin Assignments
B.1.17KB/MS Connector (CN19)
Table B.16: KB/MS Connector (CN19)
Pin Signal Pin Signal
1 KBDATA 2 MSDATA
3GND 4+5V
5 KBCLK 6 MSCLK
B.1.18External KB/mouse Connector (CN18)
Table B.17: External KB/mouse Connector (CN18)
Pin Signal Pin Signal
1 KBCLK 2 KBDATA
3NC 4GND
5+5 V
49 PCA-6781 User Manual
B.1.19ISA Gold Finger (CN21)
B.1.20ATX Suspend Power Connector (CN23)
Table B.18: ATX Suspend Power Connector (CN23)
Pin Signal Pin Signal
1 +5 VSB 2 +5 V
3 PS_ON signal
B.1.21Negative Power Input (CN17)
Table B.19: Negative Power Input (CN17)
Pin Signal Pin Signal
1-5 V 2GND
3-12 V
B.1.22CF Connector (CN24)
B.1.23+12V FAN connector(CN22)
Table B.20: +12 V FAN connector (CN22)
Pin Signal Pin Signal
1
3
FAN_PWM
FAN-SPD
B.1.24System FAN connector (CN25)
Table B.21: System FAN connector (CN25)
Pin Signal Pin Signal
1
3
FAN_PWM
FAN-SPD
B.1.25SMBUS connector (CN26)
2
2
+12 V
+12 V
Table B.22: SMBUS connector (CN26)
Pin Signal Pin Signal
1
3
PCA-6781 User Manual 50
+5 V
SMB_DAT
2
4
+SMB_CLK
GND
B.1.26HW Fail LED (CN27)
Table B.23: HW Fail LED (CN27)
Pin Signal Pin Signal
Appendix B Pin Assignments
1
HWM_INT#
B.2 Jumpers
B.2.1 LVDS Voltage Choose (JP1)
Table B.24: LVDS Voltage Choose (JP1)
Pin Signal Pin Signal
1-2 +5V 2-3 +3.3V
B.2.2 Clear CMOS (J1)
Table B.25: CLEAR CMOS (J1)
Pin Signal Pin Signal
1-2 Normal 2-3 Clear CMOS
B.2.3 232/422/485 SEL (J2)
2
GND
Table B.26: 232/422/485 SEL (J2)
Pin Signal Pin Signal
1-2 RS232 * 2-3 RS422
5-6 RS485
51 PCA-6781 User Manual
PCA-6781 User Manual 52
Appendix C
C System Assignments
This appendix contains information of a detailed nature.
Sections include:
! System I/O ports
! 1st MB memory map
! DMA channel assignments
! Interrupt assignments
C.1 System I/O Ports
Table C.1: System I/O Ports
Addr. range (Hex) Device
00-0F Master DMA controller
20-21F Master Interrupt controller
40-5F Timer/Counter
60-6F Keyboard controller
(60h) KBC Data
(61h) Misc Functions & Spkr Ctrl
(64h) KBC Command/Status
70-77 RTC/COMS/NMI-Disable
78-7F -available for system use-
80 -reserved-(debug port)
81-8F DMA Page Registers
90-91 -available for system use-
92 System Control
93-9F -available for system use-
A0-A1H Slave Interrupt Controller
C0-DF Slave DMA Controller
E0-FF -available for system use-
100-CF7 -available for system use-
CF8-CFB PCI Configuration Address
CFC-CFF PCI Configuration Data
D00-FFFF -available for system use-
200-20F Game Port
2F8-2FF COM2
378-37F Printer Port (Standard & AFF)
3F0-3F1 Configuration Index/Data
3F0-3F7 Floppy Controller
3F8-3FF COM1
778-77A Printer Port (ECP Extensions) (Port 378+400)
800h~87fh Super I/O runtime reg
PCA-6781 User Manual 54
C.2 1st MB Memory Map
Table C.2: 1st MB Memory Map
Addr. range (Hex) Device
F0000h - FFFFFh System ROM
*CC000h - EFFFFh Unused (reserved for Ethernet ROM)
C0000h - CBFFFh Expansion ROM (for VGA BIOS)
B8000h - BFFFFh CGA/EGA/VGA text
B0000h - B7FFFh Unused
A0000h - AFFFFh EGA/VGA graphics
00000h - 9FFFFh Base memory
* If Ethernet boot ROM is disabled
* E0000 - EFFFF is reserved for BIOS POST
C.3 DMA Channel Assignments
Table C.3: DMA Channel Assignments
Appendix C System Assignments
Channel Function
0 Available
1 Available (audio)
2 Floppy disk (8-bit transfer)
3 Available (printer port)
4 Cascade for DMA controller 1
5 Available
6 Available
7 Available
* Audio DMA select 1, 3, or 5
** Printer port DMA select 1 (LPT2) or 3 (LPT1)
55 PCA-6781 User Manual
C.4 Interrupt Assignments
Table C.4: Interrupt Assignments
Interrupt# Interrupt source
IRQ 0 Interval timer
IRQ 1 Keyboard
IRQ 2 Interrupt from controller 2 (cascade)
IRQ 3 COM2
IRQ 4 COM1
IRQ 5 Unused
IRQ 6 FDD
IRQ 7 LPT1
IRQ 8 RTC
IRQ 9 ACPI
IRQ 10 Unused
IRQ 11 Unused
IRQ 12 PS/2 mouse
IRQ 13 INT from co-processor
IRQ 14 Primary IDE
IRQ 15 Secondary IDE for CFC
* Ethernet interface IRQ select: 5, 9, 10, 11
* PNP USB IRQ select: 5, 9, 10, 11
PCA-6781 User Manual 56
Appendix C System Assignments
57 PCA-6781 User Manual
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Please verify specifications before quoting. This guide is intended for reference
purposes only.
All product specifications are subject to change without notice.
No part of this publication may be reproduced in any form or by any means,
electronic, photocopying, recording or otherwise, without prior written permission of the publisher.
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