Advantech PCA-6774 User Manual

PCA-6774

ISA Socket370 Slot PC,
VGA/LCD/LVDS/LAN/CFC
with optional second LAN and

Gigabit LAN

User Manual

i

Copyright

This document is copyrighted, © 2005. All rights are reserved. The origi­nal manufacturer reserves the right to make improvements to 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
the original manufacturer. Information provided in this manual is
intended to be accurate and reliable. However, the original manufacturer
assumes no responsibility for its use, nor for any infringements upon the
rights of third parties that may result from such 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 Corporation.
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-6774.

Part No. 200K677410

2nd Edition, Dec. 2005

PCA-6774 User Manual ii

Packing List

Before you begin installing your card, please make sure that the following
materials have been shipped:

• 1 PCA-6774 all-in-one single board computer

• 1 startup manual

• CD-ROM or disks for utility, drivers, and manual (in PDF format)

• 1 Power cable p/n: 1703080101

• 1 PS/2 KB/M cable p/n: 1700060202

• 1 COM port cable p/n: 1700100250

• 1 Printer cable p/n: 1700260250

• 1 FDD cable p/n: 1703340400

• 1 EIDE cable p/n: 1701400452

• Mini Jumper p/n: 1653300100

If any of these items are missing or damaged, contact your distributor or
sales representative immediately.

Optional item:

1700100170 USB cable adapter (2.54 mm)

Model No. List Description

PCA-6774F-00A1 ISA Socket 370 half-sized CPU Card with

VGA/LCD/LVDS/LAN/CFC

PCA-6774FG-00A1 ISA Socket 370 half-sized CPU card with

VGA/LCD/LVDS/Giga LAN/CFC

PCA-6774F-02A1 ISA Eden 400 half-sized CPU card with

VGA/LCD/LVDS/2LAN/CFC

iii

Additional Information and Assistance

1. Visit the Advantech web site at www.advantech.com where you can
find the latest 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

PCA-6774 User Manual iv

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!

Achtung!

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.

v

PCA-6774 User Manual vi

Contents

Chapter 1 Introduction ......................................................2

1.1 Introduction ....................................................................... 2

1.2 Features ............................................................................. 2

1.3 Specifications .................................................................... 3

1.3.1 Standard SBC Functions ................................................. 3

1.3.2 VGA/LCD Interface ....................................................... 3

1.3.3 Solid State disk ............................................................... 4

1.3.4 PCI bus 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 ........................................................8

2.1 Jumpers.............................................................................. 8

Table 2.1:Jumpers ........................................................... 8

2.2 Connectors......................................................................... 8

Table 2.2:Connectors...................................................... 8

2.3 Locating Connectors (component side)........................... 10

Figure 2.1:Jumper & Connector locations.................... 10

2.4 Locating Connectors (solder side)................................... 11

Figure 2.2:Connectors (solder side).............................. 11

2.5 Setting Jumpers ............................................................... 11

2.6 Clear CMOS (J1)............................................................. 13

Table 2.3:CMOS clear (J1) ........................................... 13

2.7 COM2 RS232-422-485 Select (J3) ................................. 14

Table 2.4:COM2 RS232-422-485 Select...................... 14

2.8 Watchdog timer configuration ........................................ 14

2.8.1 Watchdog timer output option (J2)............................... 14

Table 2.5:Watchdog timer output option (J2)............... 14

2.9 Installing DIMMs............................................................ 15

2.10 ATX power control connector (CN20,CN21)................. 16

2.10.1 ATX feature connector (CN20) and soft-on power button

connector (CN21).............................................................16

Figure 2.3:Wiring for ATX soft power switch function16

2.11 Printer port connector (CN4)........................................... 17

2.12 CompactFlash Socket...................................................... 17

2.12.1 CompactFlash (CN5) .................................................... 17

2.13 Floppy drive connector (CN3) ........................................ 17

2.13.1 Connecting the floppy drive ......................................... 17

2.14 IDE connector (CN1,CN2).............................................. 18

vii Table of Contents

2.14.1 Connecting the hard drive............................................. 18

2.15 VGA/LCD interface connections .................................... 19

2.15.1 CRT display connector (CN7) ...................................... 19

2.15.2 Flat panel display connector (CN22)............................ 19

2.15.3 Extension flat panel connector (CN23) ........................ 19

2.15.4 LVDS LCD panel connector (CN25) ........................... 19

2.15.5 Panel type selection (SW1)........................................... 20

Table 2.6:S1 Panel Type Select (SW1) ........................ 20

2.16 USB connectors (CN6).................................................... 20

2.17 Ethernet configuration..................................................... 21

2.17.1 100Base-T connector (CN8)......................................... 21

2.17.2 Network boot ................................................................ 21

2.18 Power connectors (CN14, CN15).................................... 21

2.18.1 Main power connector, +5 V, +12 V (CN15)............... 21

2.18.2 CPU Fan power supply connector (CN14)................... 21

2.19 ATX Power & HDD LED, speaker out Connector......... 22

2.19.1 HDD LED (CN19)........................................................ 22

2.19.2 ATX power LED & KB-LOCK (CN16) ...................... 22

2.19.3 Speaker out (CN17) ...................................................... 22

2.20 COM port connector (CN9,CN10,CN29) ....................... 22

2.21 Keyboard and PS/2 mouse connector (CN11) ................ 22

2.22 External KB/mouse connector (CN12) ........................... 22

2.23 Watchdog output (CN18) ................................................ 23

2.24 Daughter card connector (CN27,CN28).......................... 23

Chapter 3 Software Configuration .................................26

3.1 Introduction ..................................................................... 26

3.2 VGA display firmware configuration ............................. 26

Figure 3.1:VGA setup screen........................................ 27

Chapter 4 Award BIOS Setup.........................................30

4.1 System test and initialization........................................... 30

4.1.1 System configuration verification................................. 30

4.2 Award BIOS setup .......................................................... 31

4.2.1 Entering setup ............................................................... 31

Figure 4.1:BIOS setup program initial screen .............. 31

4.2.2 Standard CMOS Features setup .................................... 32

Figure 4.2:CMOS Features setup.................................. 32

4.2.3 Advanced BIOS Features setup .................................... 33

Figure 4.3:Advanced BIOS Features setup................... 33

4.2.4 Advanced Chipset Features setup ................................. 34

Figure 4.4:Advanced Chipset Features setup ............... 34

4.2.5 Integrated Peripherals ................................................... 35

Figure 4.5:Integrated Peripherals.................................. 35

4.2.6 Power Management Setup ............................................ 35

PCA-6774 User Manual viii

Figure 4.6:Power Management Setup........................... 35

4.2.7 PnP/PCI Configurations................................................ 36

Figure 4.7:PnP/PCI Configurations .............................. 36

4.2.8 PC Health Status ........................................................... 36

Figure 4.8:PC Health Status.......................................... 36

4.2.9 Frequency/Voltage Control........................................... 37

Figure 4.9:Frequency/Voltage Control ......................... 37

4.2.10 Load Optimized Defaults .............................................. 38

Figure 4.10:Load BIOS defaults screen........................ 38

4.2.11 Set Password ................................................................. 38

4.2.12 Save & Exit Setup......................................................... 39

4.2.13 Exit Without Saving...................................................... 40

Chapter 5 PCI SVGA Setup ............................................42

5.1 Introduction ..................................................................... 42

5.1.1 Chipset .......................................................................... 42

5.1.2 Display memory............................................................ 42

5.1.3 Display types................................................................. 42

5.2 Installation of the SVGA Driver ..................................... 43

5.2.1 Installation for Windows 95 ......................................... 43

5.2.2 Installation for Windows 98/Me ................................... 47

5.2.3 Installation for Windows NT ........................................ 52

5.2.4 Installation for Windows 2000 ..................................... 57

5.2.5 Installation for Windows XP ........................................ 62

5.3 Further Information......................................................... 68

Chapter 6 PCI Bus Ethernet Interface...........................70

6.1 Introduction ..................................................................... 70

6.2 Installation of Ethernet driver ......................................... 70

6.2.1 Installation for MS-DOS and Windows 3.1.................. 70

6.2.2 Installation for Windows 98 ......................................... 71

6.2.3 Installation for Windows 2000 ..................................... 74

6.2.4 Installation for Windows NT ........................................ 79

6.3 Further information ......................................................... 85

Appendix A Programming the Watchdog Timer .............88

A.1 Supported Input Timing Modes ...................................... 88

Appendix B Pin Assignments .............................................92

B.1 Primary IDE Connector (CN1) ....................................... 92

Table B.1:Primary IDE Connector (CN1) .................... 92

B.2 Secondary IDE Connector (CN2) ................................... 93

Table B.2:Secondary IDE Connector(CN2) ................. 93

B.3 Floppy Connector (CN3)................................................. 94

Table B.3:Floppy Connector (CN3) ............................. 94

B.4 Printer Port Connector (CN4) ......................................... 95

Table B.4:Printer Port Connector (CN4) ...................... 95

ix Table of Contents

B.5 CompactFlash Socket (CN5)........................................... 96

Table B.5:CompactFlash Socket (CN5) ....................... 96

B.6 USB Connector (CN6) .................................................... 97

Table B.6:USB Connector (CN6)................................. 97

B.7 D-SUB VGA Connector (CN7) ...................................... 98

Table B.7:D-SUB VGA Connector (CN7)................... 98

B.8 LAN RJ45 Connector (CN8)........................................... 98

Table B.8:LAN RJ45 Connector (CN8) ....................... 98

B.9 COM Port 1, 2 Connector (CN9, CN10)......................... 99

Table B.9:COM Port 1 Connector (CN9, CN10) ......... 99

B.10 PS/2 Keyboard & Mouse Connector (CN11).................. 99

Table B.10:PS/2 Keyboard & Mouse Connector.......... 99

B.11 External Keyboard Connector (CN12).......................... 100

Table B.11:External Keyboard Connector (CN12) .... 100

B.12 CPU Fan Connector (CN14) ......................................... 100

Table B.12:CPU FAN Connector (CN14).................. 100

B.13 EBX Power Connector (CN15)..................................... 101

Table B.13:EBX Power Connector (CN15) ............... 101

B.14 Power LED & Keyboard Lock (CN16)......................... 102

Table B.14:Power LED & Keyboard Lock (CN16) ... 102

B.15 External Speaker (CN17) .............................................. 102

Table B.15:External Speaker (CN17) ......................... 102

B.16 Reset Connector (CN18) ............................................... 103

Table B.16:Reset Connector (CN18).......................... 103

B.17 HDD LED Connector (CN19)....................................... 103

Table B.17:HDD LED Connector (CN19) ................. 103

B.18 ATX Feature Connector (CN20)................................... 104

Table B.18:ATX Feature Connector (CN20) ............. 104

B.19 ATX Soft-on Power Button Connector (CN21)............ 104

Table B.19:ATX Soft-on Power Button Connector.... 104

B.20 LCD 40-Pin Connector (CN22) .................................... 105

Table B.20:LCD 40-Pin Connector (CN22)............... 105

B.21 LCD 20-Pin Connector (CN23) .................................... 106

Table B.21:LCD 20-Pin Connector (CN23)............... 106

B.22 LCD Backlight Connector (CN24) ............................... 106

Table B.22:LCD Backlight Connector (CN24) .......... 106

B.23 LVDS Connector (CN25).............................................. 107

Table B.23:LVDS Connector (CN25) ........................ 107

B.24 I/O Daughter Board Connector 1 (CN27)..................... 108

Table B.24:I/O Daughter Board Connector 1 (CN27) 108

B.25 I/O Daughter Board Connector 2 (CN28)..................... 109

Table B.25:I/O Daughter Board Connector 2 (CN28) 109

B.26 RS485/422 Connector (CN29) ..................................... 109

Table B.26:RS485/422 Connector (CN29)................. 109

PCA-6774 User Manual x

Appendix C System Assignments.....................................112

C.1 System I/O Ports............................................................ 112

Table C.1:System I/O ports ........................................ 112

C.2 1st MB memory map..................................................... 113

Table C.2:1st MB memory map ................................. 113

C.3 DMA channel assignments............................................ 114

Table C.3:DMA channel assignments ........................ 114

C.4 Interrupt assignments .................................................... 115

Table C.4:Interrupt assignments ................................. 115

xi Table of Contents

PCA-6774 User Manual xii

1

CHAPTER

General Information

This chapter gives background
information on the PCA-6774.

Sections include:

• Introduction

• Features

• Specifications

• Board layout and dimensions

1 Chapter 1

Chapter 1 Introduction

1.1 Introduction

Advantech's new PCA-6774 is a Socket 370 half-sized CPU card that will
support up to 1.26GHz Pentium III with 512KB 2nd cache using VIA
VT8606 "Twister T" chipset. This SBC includes a 4X AGP controller, a
PCI Ethernet interface, and 36-bit TTL interface. Its design is based on
the half-sized CPU card and supports ISA bus expansion. Other on-board
features include an FDD, LPT, 2 USBs (4 USBs optional), and 2 serial
ports. The SSD solution supports CompactFlash cards. This product uses
a VIA Twister T chip with Integrated ProSavage4 2D/3D/Video Acceler­ator and supports 4X AGP VGA/LCD interface and up to 8/16/32 MB
frame buffer using system memory. With the selection of daughter
boards, the PCA-6774 board can support a second LAN at 10/100Mbps,
also this CPU card can support Gigabit LAN with Intel 82540.

1.2 Features

• Supports Socket 370 for Intel processors up to Pentium III 1.26GHz

with 512KB (Tualatin)

• ISA bus half-sized CPU card

• Supports selectable LAN (1 x 10/100BASE-T LAN or 2 x 10/

100BASE-T LAN or 1 x Gigabit LAN)

• 4X AGP graphics for high performance applications

• Supports boot from USB device

• Supports wake-on-LAN

• Supports Ring-up by Modem

• Supports LVDS interface

• Supports LCD backlight turn-off function

• RS-485 Auto-flow

PCA-6774 User Manual 2

1.3 Specifications

1.3.1 Standard SBC Functions

• CPU: Supports Socket 370 for Intel processors up to Pentium III 1.26
GHz with 512KB cache (Tualatin)

• System chipsets: VIA VT8606 "Twister T" + VT82C686B

• BIOS: Award 256 KB Flash memory

• System memory: One DIMM socket accepts 64 MB up to 512 MB
SDRAM

• 2nd cache memory: 128/256/512KB on Celeron/PentiumIII processor

• Enhanced IDE interface: One channel supports up to two EIDE
devices. Supports ATA-100, ATA-33 and PIO modes.

• FDD interface: Supports up to tw o FDDs

• Serial ports: Two serial RS-232 ports:

COM1: RS-232

COM2: RS-232/422/485

RS-485 supports AUTO-flow

• Parallel port: Parallel port supports SPP/EPP/ECP modes

• Keyboard/mouse connector: Supports standard PC/AT keyboard and a
PS/2 mouse

• Power management: Supports power saving mode including Normal/
Standby/Suspend modes. APM 1.2 compliant

• Watchdog timer: 62 level timer intervals

• USB: Two universal serial bus ports, Optional 4 ports.

1.3.2 VGA/LCD Interface

• Chipset: VIA VT8606 "Twister T" chip with integrated ProSavage4
2D/3D/Video Accelerator

• Frame buffer: Supports 8/16/32MB frame buffer with system memory

• Interface: 4X AGP VGA/LCD interface, Supports for up to 36 bit TFT

• Display modes:

CRT Mode: 1280 x 1024@16bpp (60Hz),

1024 x 768@16bpp (85Hz),

3 Chapter 1

LCD/Simultaneous Mode:

1280 x 1024@16bpp (60Hz),

1024 x 768@16bpp (60Hz),

1280 x 1024@32bpp

LVDS interface:

Supports 2-Channel (2 x 18-bit) LVDS interface

1.3.3 Solid State disk

• Supports CompactFlash Type I/II disks

1.3.4 PCI bus Ethernet interface

• Chipset: Intel 82551/82559/82540

• Ethernet interface: IEEE 802.3u compatible 10/100Base-T interface.
Supports selectable LAN (1 x 10/100base-T LAN or 2 x 10/100base-T
LAN or 1x Gigabit LAN)

• 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, +12V ±5%

• Power requirements:

Max:

6.18 A @ +5 V, 0.22 A @+12 V

Typical:

5.5 A @ +5 V, (with PC133 128MB SDRAM, Pentium III 1.0 GHz)

0.17 A @ +12 V, (with PC133 128MB SDRAM, Pentium III 1.0 GHz)

• Operating temperature: 0 ~ 60°C (32 ~ 140°F)

• Operating humidity: 0% ~ 90% Relative Humidity, Non condensing

• Weight: 0.27 kg (weight of total package)

PCA-6774 User Manual 4

1.4 Board layout: dimensions

Figure 1.1: Board layout: dimensions (component side)

5 Chapter 1

Figure 1.2: Board layout: dimensions (solder side)

PCA-6774 User Manual 6

2

CHAPTER

Installation

This chapter explains the setup procedures
of PCA-6774 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.

7 Chapter 2

Chapter 2 Installation

2.1 Jumpers

The PCA-6774 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 CMOS clear

J2 Watchdog timer output selection

J3 COM2 RS232-422-485 Select

2.2 Connectors

Onboard connectors link the PCA-6774 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 Primary IDE Connector

CN2 Secondary IDE Connector

CN3 Floppy Connector

CN4 Printer Port Connector

CN5 CompactFlash Socket

CN6 USB Port 1, 2

CN7 D-SUB VGA Connector

CN8 LAN RJ45 Connector

CN9 COM Port 1

CN10 COM Port 2

CN11 PS/2 Keyboard & Mouse Connector

PCA-6774 User Manual 8

Table 2.2: Connectors

CN12 External Keyboard Connector

CN14 CPU FAN Connector

CN15 EBX Power Connector

CN16 Power LED & Keyboard Lock

CN17 External Speaker

CN18 Reset Connector

CN19 HDD LED Connector

CN20 ATX Feature Connector

CN21 ATX Soft-on Power Button Connector

CN22 LCD 40-Pin Connector

CN23 LCD 20-Pin Connector

CN24 LCD Backlight Connector

CN25 LVDS Connector

CN27 I/O Daughter Board Connector 1

CN28 I/O Daughter Board Connector 2

CN29 RS485/422 Connector

9 Chapter 2

2.3 Locating Connectors (component side)

Figure 2.1: Jumper & Connector locations

PCA-6774 User Manual 10

2.4 Locating Connectors (solder side)

Figure 2.2: Connectors (solder side)

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.

11 Chapter 2

open closed closed 2-3

The jumper settings are schematically depicted in this manual as follows:

open closed closed 2-3

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-6774 User Manual 12

2.6 Clear CMOS (J1)

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. Return jumper to pins 1 and 2.

4. Turn on the system. The BIOS is now reset to its default setting.

Table 2.3: CMOS clear (J1)

*3.0 V normal clear CMOS

* default setting

13 Chapter 2

2.7 COM2 RS232-422-485 Select (J3)

Table 2.4: COM2 RS232-422-485 Select

PIN RS232* RS422 RS484

1-2 Closed Open Open

3-4 Open Closed Open

5-6 Open Open Closed

2.8 Watchdog timer configuration

An on-board watchdog timer reduces the chance of disruptions which
EMP (electro-magnetic pulse) interference can cause. This is an invalu­able protective device for standalone or unmanned applications. Setup
involves one jumper and running the control software (refer to Appendix
A).

2.8.1 Watchdog timer output option (J2)

When the watchdog timer activates (CPU processing has come to a halt),
it can reset the system or generate an interrupt on IRQ11. This can be set
via setting J2 as shown below:

Table 2.5: Watchdog timer output option (J2)

*System reset IRQ 11

* default setting

PCA-6774 User Manual 14

2.9 Installing DIMMs

The procedure for installing DIMMs is described below. Please follow
these steps carefully. The number of pins are different on either side of
the breaks, so the module can only fit in one way. DIMM modules have
different pin contacts on each side, and therefore have a higher pin den­sity.

1. Make sure that the two handles of the DIMM socket are in the

“open” position. i.e. The handles remain leaning outward.

2. Slowly slide the DIMM module along the plastic guides on both

ends of the socket.

3. Press the DIMM module right down into the socket, until you hear

a click. This is when the two handles have automatically locked the
memory module into the correct position of the socket.

To remove the memory module, just push both handles outward, and the
module will be ejected from the socket.

15 Chapter 2

2.10 ATX power control connector (CN20,CN21)

2.10.1 ATX feature connector (CN20) and soft-on power

button connector (CN21)

The PCA-6774 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

(PCA-6774 optional item, Part No. 1703200100)

2. Connect the 3-pin plug of the cable to CN20 (ATX feature connec-

tor).

3. Connect the power on/off button to CN21. (A momentary type of

button should be used.)

Important Make sure that the ATX power supply can take

at least a 10 mA load on the 5 V standby lead
(5VSB). If not, you may have difficulty power­ing on your system.

to CN1 ATX

features connector

to main power
connector CN8

20-pin

female connector

Figure 2.3: Wiring for ATX soft power switch function

PCA-6774 User Manual 16

ATX

power supply

2.11 Printer port connector (CN4)

Normally, the parallel port is used to connect the card to a printer. The
PCA-6774 includes a multi-mode (ECP/EPP/SPP) parallel 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 parallel port is designated as LPT1, and can be disabled or changed to
LPT2 or LPT3 in the system BIOS setup.

The parallel port interrupt channel is designated to be IRQ7.

You can select ECP/EPP DMA channel via BIOS setup.

2.12 CompactFlash Socket

The PCA-6774 provides a 50-pin socket for CompactFlash card type I/II.

2.12.1 CompactFlash (CN5)

The CompactFlash card shares a secondary IDE channel which can be
enabled/disabled via the BIOS settings.

2.13 Floppy drive connector (CN3)

You can attach up to two floppy drives to the PCA-6774’s on-board con­troller. 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 20-pin daisy-chain drive connector cable is required for a dual-drive
system. On one end of the cable is a 20-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).

2.13.1 Connecting the floppy drive

1. Plug the 20-pin flat-cable connector into CN3. Make sure that the

red wire corresponds 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

17 Chapter 2

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 connec-

tor.
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.

2.14 IDE connector (CN1,CN2)

The PCA-6774 provides an IDE channel to which you can attach up to
two Enhanced Integrated Device Electronics hard disk drives or CDROM
to the PCA-6774’s internal controller. The PCA-6774'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.

2.14.1 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 CN1, CN2. Make sure that the red

(or blue) wire corresponds 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 con-

nector.)
If desired, connect a second drive as described above.

PCA-6774 User Manual 18