Intel iEi Motherboard A300 User Manual

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A300 Motherboard

 

 

 

Revision

 

 

 

 

 

 

 

 

 

 

 

MODEL

A300 Intel® Pentium® M/Celeron® M Motherboard

 

Revision Number

Description

 

Date of Issue

 

 

 

 

 

 

1.0

Initial release

 

March 2007

 

 

 

 

 

 

 

 

 

 

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A300 Motherboard

Copyright

COPYRIGHT NOTICE

The information in this document is subject to change without prior notice in order to improve reliability, design and function and does not represent a commitment on the part of the manufacturer.

In no event will the manufacturer be liable for direct, indirect, special, incidental, or consequential damages arising out of the use or inability to use the product or documentation, even if advised of the possibility of such damages.

This document contains proprietary information protected by copyright. All rights are reserved. No part of this manual may be reproduced by any mechanical, electronic, or other means in any form without prior written permission of the manufacturer.

TRADEMARKS

IBM PC is a registered trademark of International Business Machines Corporation. INTEL is a registered trademark of INTEL Corporation. Other product names mentioned herein are used for identification purposes only and may be trademarks and/or registered trademarks of their respective owners.

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A300 Motherboard

Packing List

NOTE:

If any of the components listed in the checklist below are missing, please do not proceed with the installation. Contact the IEI reseller or vendor you purchased the A300 from or contact an IEI sales representative directly. To contact an IEI sales representative, please send an email to sales@iei.com.tw.

The items listed below should all be included in the A300 package.

1 x A300 single board computer

1 x IDE flat cable 44p/40p/40p

1 x IDE flat cable 44p/44p

2 x Single port RS-232 cable

1 x RS-232/422/485 cable

1 x Mini jumper pack

1 x Utility CD

1 x QIG (quick installation guide)

Images of the above items are shown in Chapter 3.

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A300 Motherboard

 

Table of Contents

1

INTRODUCTION.....................................................................................................

2

 

1.1 A300 OVERVIEW........................................................................................................

3

 

1.1.1 A300 Applications ..............................................................................................

3

 

1.1.2 A300 Benefits .....................................................................................................

4

 

1.1.3 A300 Features ....................................................................................................

4

 

1.2 A300 BOARD OVERVIEW ...........................................................................................

5

 

1.2.1 A300 Connectors................................................................................................

6

 

1.2.2 Technical Specifications.....................................................................................

7

2

DETAILED SPECIFICATIONS ...........................................................................

10

 

2.1 OVERVIEW ................................................................................................................

11

 

2.2 DIMENSIONS .............................................................................................................

11

 

2.2.1 Board Dimensions.............................................................................................

11

 

2.2.2 External Interface Panel Dimensions ..............................................................

12

 

2.3 DATA FLOW..............................................................................................................

12

 

2.4 COMPATIBLE PROCESSOR .........................................................................................

13

 

2.4.1 CPU Overview .................................................................................................

13

 

2.4.2 Supported Processors ......................................................................................

13

 

2.5 INTEL®855GME CHIPSET GRAPHICS MEMORY CONTROLLER HUB ........................

14

 

2.5.1 Intel® 855GME Overview ................................................................................

14

 

2.5.2 Intel® 855GME Memory Support ....................................................................

14

 

2.5.3 Intel® 855GME Internal Graphics Controller.................................................

14

 

2.5.4 Intel® 855GME Power Management ...............................................................

16

 

2.6 INTEL®82801DB I/O CONTROLLER HUB (ICH4)....................................................

16

 

2.6.1 Intel® ICH4 Overview ......................................................................................

16

 

2.6.2 Intel® ICH4 IDE Interface ...............................................................................

17

 

2.6.3 Intel® ICH4 Compact Flash Interface .............................................................

17

 

2.6.4 Intel® ICH4 Audio Codec 97 (AC’97) Controller............................................

17

 

2.6.5 Intel® ICH4 USB Controller ............................................................................

18

 

2.6.6 Intel® ICH4 PCI Interface ...............................................................................

18

 

2.6.7 Intel® ICH4 Low Pin Count (LPC) Interface...................................................

18

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2.6.8 BIOS.................................................................................................................

19

 

2.7 PCI BUS COMPONENTS............................................................................................

19

 

2.7.1 PCI Bus Overview............................................................................................

19

 

2.7.2 GbE Ethernet ...................................................................................................

19

 

2.7.3 PCMCIA Slot....................................................................................................

20

 

2.8 LPC BUS COMPONENTS...........................................................................................

20

 

2.8.1 LPC Bus Overview...........................................................................................

20

 

2.8.2 BIOS Chipset....................................................................................................

20

 

2.8.3 Super I/O Chipset.............................................................................................

21

 

2.8.3.1 Super I/O 16C550 UARTs ........................................................................

21

 

2.8.3.2 Super I/O Enhanced Hardware Monitor ...................................................

22

 

2.8.3.3 Super I/O Fan Speed Controller................................................................

22

 

2.8.3.4 Super I/O Keyboard Controller.................................................................

22

 

2.8.4 LPC I/O Chipset...............................................................................................

22

 

2.9 ENVIRONMENTAL AND POWER SPECIFICATIONS .......................................................

22

 

2.9.1 System Monitoring ...........................................................................................

22

 

2.9.2 Operating Temperature and Temperature Control...........................................

23

 

2.9.3 Power Consumption.........................................................................................

23

3

UNPACKING ..........................................................................................................

24

 

3.1 ANTI-STATIC PRECAUTIONS......................................................................................

25

 

3.2 UNPACKING..............................................................................................................

25

 

3.2.1 Unpacking Precautions....................................................................................

25

 

3.3 UNPACKING CHECKLIST...........................................................................................

26

 

3.3.1 Package Contents.............................................................................................

26

4

CONNECTOR PINOUTS......................................................................................

28

 

4.1 PERIPHERAL INTERFACE CONNECTORS ....................................................................

29

 

4.1.1 A300 Layout .....................................................................................................

29

 

4.1.2 Peripheral Interface Connectors .....................................................................

30

 

4.1.3 External Interface Panel Connectors...............................................................

32

 

4.2 INTERNAL PERIPHERAL CONNECTORS......................................................................

32

 

4.2.1 ATX Power Connector .....................................................................................

32

 

4.2.2 Audio Connector ..............................................................................................

33

 

4.2.3 Compact Flash Socket......................................................................................

34

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4.2.4 Fan Connectors................................................................................................

36

4.2.5 Front Panel Connector ....................................................................................

37

4.2.6 GPIO Connector ..............................................................................................

38

4.2.7 IDE Connector .................................................................................................

39

4.2.8 Inverter Power Connector ...............................................................................

40

4.2.9 IrDA Infrared Interface Connector..................................................................

41

4.2.10 LED Connector ..............................................................................................

42

4.2.11 Power Button Connector................................................................................

43

4.2.12 Serial Port Connector (RS-422/485) .............................................................

44

4.2.13 Serial Port Connector (RS-232).....................................................................

45

4.2.14 System Panel Connector ................................................................................

47

4.2.15 TFT LCD LVDS Connector............................................................................

48

4.2.16 Internal USB Connectors (8-Pin) ..................................................................

50

4.2.17 Internal USB Connectors (5-Pin) ..................................................................

51

4.3 EXTERNAL PERIPHERAL INTERFACE CONNECTORS ..................................................

52

4.3.1 External Peripheral Interface Connector Overview........................................

52

4.3.2 Audio Connectors.............................................................................................

52

4.3.3 DVI-I Connector ..............................................................................................

53

4.3.4 RJ-45 Ethernet Connector ...............................................................................

54

4.3.5 Keyboard/Mouse Connector ............................................................................

55

4.3.6 Serial Port Connector (COM 1) ......................................................................

56

4.3.7 Serial Port Connectors (COM 2 and COM3) ..................................................

57

4.3.8 USB Combo Ports ............................................................................................

58

4.3.9 VGA Connector ................................................................................................

58

5 INSTALLATION ....................................................................................................

60

5.1 ANTI-STATIC PRECAUTIONS......................................................................................

61

5.2 INSTALLATION CONSIDERATIONS .............................................................................

62

5.2.1 Installation Notices ..........................................................................................

62

5.2.2 Installation Checklist .......................................................................................

63

5.3 CPU AND CPU COOLING KIT INSTALLATION...........................................................

64

5.3.1 Socket 479 CPU Installation............................................................................

64

5.3.2 Cooling Kit CF-479B-RS Installation..............................................................

66

5.4 DIMM MODULE INSTALLATION AND CF CARD INSTALLATION ...............................

68

5.4.1 DIMM Module Installation ..............................................................................

68

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5.4.2 CF Card Installation........................................................................................

69

5.5 JUMPER SETTINGS....................................................................................................

70

5.5.1 CF Card Setup Jumper Settings.......................................................................

71

5.5.2 Clear CMOS Jumper........................................................................................

72

5.5.3 COM Port Setting Jumper ...............................................................................

73

5.5.4 LCD Voltage Selection .....................................................................................

75

5.5.5 LCD Rotation Jumper ......................................................................................

76

5.6 CHASSIS INSTALLATION ...........................................................................................

77

5.6.1 Airflow..............................................................................................................

77

5.6.2 Motherboard Installation.................................................................................

78

5.7 INTERNAL PERIPHERAL DEVICE CONNECTIONS........................................................

78

5.7.1 Peripheral Device Cables ................................................................................

78

5.7.2 ATA Flat Cable Connection .............................................................................

78

5.7.3 Single Port RS-232 Cable ................................................................................

79

5.8 EXTERNAL PERIPHERAL INTERFACE CONNECTION ...................................................

80

6 AMI BIOS................................................................................................................

82

6.1.1.1 IDE Master, IDE Slave .............................................................................

84

6.1.2 Super IO Configuration....................................................................................

91

6.1.3 Hardware Health Configuration......................................................................

94

6.1.4 ACPI Configuration .........................................................................................

96

6.1.4.1 Advanced ACPI Configuration .................................................................

97

6.1.5 MPS Configuration ..........................................................................................

99

6.1.6 USB Configuration.........................................................................................

100

6.1.6.1 USB Mass Storage Device Configuration...............................................

103

6.2 PCI/PNP ................................................................................................................

105

6.3 BOOT ......................................................................................................................

110

6.3.1 Boot Settings Configuration............................................................................

111

6.3.2 Boot Device Priority .......................................................................................

115

6.3.3 Removable Drives ...........................................................................................

116

6.3.4 CD/DVD Drives ..............................................................................................

118

6.4 SECURITY................................................................................................................

118

6.5 CHIPSET .................................................................................................................

120

6.5.1 NorthBridge Configuration............................................................................

120

6.5.2 SouthBridge Configuration............................................................................

124

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6.6 POWER ...................................................................................................................

126

 

6.7 EXIT.......................................................................................................................

129

7

SOFTWARE DRIVERS .......................................................................................

133

 

7.1 AVAILABLE SOFTWARE DRIVERS ............................................................................

134

 

7.2 CHIPSET DRIVER INSTALLATION.............................................................................

134

 

7.3 REALTEK AUDIO DRIVER INSTALLATION ...............................................................

138

 

7.4 INTEL CHIPSET GRAPHICS DRIVER .........................................................................

142

 

7.5 SATA - ALI RAID DRIVER INSTALLATION ............................................................

145

 

7.5.1 Installation Steps During Windows XP Installation.......................................

146

 

7.5.2 Installation Steps under Existing Windows XP ..............................................

147

A

BIOS OPTIONS....................................................................................................

149

B

GPIO CONNECTION..........................................................................................

155

 

B.1 GPIO SETTINGS AND DEFAULT VALUES ................................................................

156

 

B.1.1 GPIO Settings................................................................................................

156

 

B.1.2 Default Settings .............................................................................................

156

 

B.2 ASSEMBLY LANGUAGE SAMPLES...........................................................................

157

 

B.2.1 GPIO Initialization Procedure ......................................................................

157

 

B.2.2 General Purpose Output Procedure..............................................................

157

 

B.2.3 General Purpose Input Procedure.................................................................

158

C

WATCHDOG TIMER ..........................................................................................

159

D

ADDRESS MAPPING..........................................................................................

163

 

D.1 ADDRESS MAP ......................................................................................................

164

 

D.2 1ST MB MEMORY ADDRESS MAP .........................................................................

164

 

D.3 IRQ MAPPING TABLE............................................................................................

165

 

D.4 DMA CHANNEL ASSIGNMENTS.............................................................................

165

E

EXTERNAL AC’97 AUDIO CODEC .................................................................

167

 

E.1 INTRODUCTION ......................................................................................................

168

 

E.1.1 Accessing the AC’97 CODEC .......................................................................

168

 

E.1.2 Driver Installation .........................................................................................

168

 

E.2 SOUND EFFECT CONFIGURATION ...........................................................................

168

 

E.2.1 Accessing the Sound Effects Manager...........................................................

168

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E.2.2 Sound Effect Manager Configuration Options

.............................................. 170

F INDEX....................................................................................................................

173

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A300 Motherboard

List of Figures

Figure 1-1: A300 Overview ...........................................................................................

5

Figure 1-2: A300 Solder Side Overview ......................................................................

6

Figure 2-1: A300 Dimensions (mm)...........................................................................

11

Figure 2-2: External Interface Panel Dimensions (mm)...........................................

12

Figure 2-3: Data Flow Block Diagram........................................................................

12

Figure 4-1: Connector and Jumper Locations .........................................................

29

Figure 4-2: Connector and Jumper Locations (Solder Side)..................................

30

Figure 4-3: ATX Power Connector Location.............................................................

33

Figure 4-4: Audio Connector Pinouts (10-pin) .........................................................

34

Figure 4-5: CF Card Socket Location........................................................................

35

Figure 4-6: Fan Connector Locations .......................................................................

36

Figure 4-7: Front Panel Connector Location............................................................

37

Figure 4-8: GPIO Connector Pinout Locations ........................................................

38

Figure 4-9: IDE Device Connector Locations ...........................................................

39

Figure 4-10: Inverter Connector Location ................................................................

41

Figure 4-11: IR Connector Location ..........................................................................

42

Figure 4-12: LED Connector Locations.....................................................................

43

Figure 4-13: Power Button Connector Location ......................................................

44

Figure 4-14: Serial Port Connector Location............................................................

45

Figure 4-15: RS-232 Serial Port Connector Locations ............................................

46

Figure 4-16: Front Panel Connector Location..........................................................

48

Figure 4-17: TFT LCD LVDS Connector Pinout Locations......................................

49

Figure 4-18: Internal USB Connector Locations (8-pin)..........................................

50

Figure 4-19: Internal USB Connector Locations (5-pin)..........................................

51

Figure 4-20: A300 On-board External Interface Connectors ..................................

52

Figure 4-21: Audio Connector....................................................................................

53

Figure 4-22 DVI-I Connector Pinout Locations ........................................................

53

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Figure 4-23: J7 Connector..........................................................................................

55

Figure 4-24: PS/2 Pinouts...........................................................................................

56

Figure 4-25: Serial Port Pinout Locations.................................................................

57

Figure 4-26: VGA Connector ......................................................................................

59

Figure 5-1: Make sure the CPU socket retention screw is unlocked .....................

65

Figure 5-2: Lock the CPU Socket Retention Screw .................................................

66

Figure 5-3: IEI CF-518-RS and CF-479A-RS Cooling Kit..........................................

66

Figure 5-4: Cooling Kit Support Bracket...................................................................

67

Figure 5-5: Connect the cooling fan cable ...............................................................

68

Figure 5-6: Installing the DIMM Module ....................................................................

69

Figure 5-7: CF Card Installation.................................................................................

70

Figure 5-8: CF Card Setup Jumper Location............................................................

72

Figure 5-9: JP2 Clear CMOS Jumper.........................................................................

73

Figure 5-10: COM Port Setting Jumper Location.....................................................

75

Figure 5-11: LCD Voltage Selection Jumper Location ............................................

76

Figure 5-12: LCD Rotate Jumper Location ...............................................................

77

Figure 5-13: IDE Cable Connection ...........................................................................

79

Figure 5-14: Single Port RS-232 Cable Connection.................................................

80

Figure 7-1: InstallShield Wizard Preparation Screen............................................

135

Figure 7-2: Welcome Screen ...................................................................................

135

Figure 7-3: License Agreement...............................................................................

136

Figure 7-4: Readme Information .............................................................................

137

Figure 7-5: Restart the Computer...........................................................................

138

Figure 7-6: Audio Driver Install Shield Wizard Starting .......................................

139

Figure 7-7: Audio Driver Welcome Screen ............................................................

140

Figure 7-8: Audio Driver Software Configuration .................................................

140

Figure 7-9: Audio Driver Digital Signal ..................................................................

141

Figure 7-10: Audio Driver Installation Complete...................................................

142

Figure 7-11: VGA Driver Installation InstallShield Wizard Screen ......................

143

Figure 7-12: VGA Driver Welcome Screen.............................................................

144

Figure 7-13: GMA Driver Installation Complete ....................................................

145

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List of Tables

Table 1-1: Technical Specifications ............................................................................

9

Table 2-1: Supported Processors..............................................................................

13

Table 2-2: Supported HDD Specifications ................................................................

17

Table 2-3: Power Consumption .................................................................................

23

Table 3-1: Package List Contents..............................................................................

27

Table 4-1: Peripheral Interface Connectors..............................................................

31

Table 4-2: Rear Panel Connectors.............................................................................

32

Table 4-3: ATX Power Connector Pinouts ................................................................

33

Table 4-4: Audio Connector Pinouts (3-pin).............................................................

34

Table 4-5: CF Card Socket Pinouts ...........................................................................

36

Table 4-6: System Fan Connector Pinouts...............................................................

37

Table 4-7: Front Panel Connector Pinouts ...............................................................

38

Table 4-8: GPIO Connector Pinouts ..........................................................................

39

Table 4-9: IDE Connector Pinouts .............................................................................

40

Table 4-10: Inverter Power Connector Pinouts ........................................................

41

Table 4-11: IR Connector Pinouts..............................................................................

42

Table 4-12: LED Connector Pinouts..........................................................................

43

Table 4-13: Power Button Connector Pinouts..........................................................

44

Table 4-14: RS-422/485 Serial Port Connector Pinouts...........................................

45

Table 4-15: COM4 Serial Port Connector Pinouts....................................................

46

Table 4-16: COM5 Serial Port Connector Pinouts....................................................

46

Table 4-17: COM6 Serial Port Connector Pinouts....................................................

47

Table 4-18: Front Panel Connector Pinouts .............................................................

48

Table 4-19: TFT LCD LVDS Port Connector Pinouts ...............................................

49

Table 4-20: Internal USB Connector Pinouts (8-pin) ...............................................

50

Table 4-21: Internal USB Connector Pinouts (5-pin) ...............................................

51

Table 4-22: DVI-I Connector Pinouts.........................................................................

54

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Table 4-23: RJ-45 Ethernet Connector Pinouts........................................................

55

Table 4-24: RJ-45 Ethernet Connector LEDs............................................................

55

Table 4-25: Keyboard Connector Pinouts ................................................................

56

Table 4-26: RS-232 Serial Port (COM 1) Pinouts ......................................................

57

Table 4-27: RS-232 Serial Port (COM2, COM3) Pinouts...........................................

57

Table 4-28: USB Connector Pinouts..........................................................................

58

Table 4-29: VGA Connector Pinouts .........................................................................

59

Table 5-1: Jumpers ....................................................................................................

71

Table 5-2: CF Card Setup Jumper Settings ..............................................................

71

Table 5-3: JP2 Clear CMOS Jumper Settings...........................................................

73

Table 5-4: COM Port Setting Jumper Settings .........................................................

74

Table 5-5: LCD Voltage Selection Jumper Settings.................................................

75

Table 5-6: LCD Rotate Jumper Settings....................................................................

76

Table 5-7: IEI Provided Cables...................................................................................

78

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A300 Motherboard

BIOS Menus

BIOS Menu 1: IDE Master Configuration...................................................................

84

BIOS Menu 2: IDE Slave Configuration.....................................................................

88

BIOS Menu 3: Super IO Configuration ......................................................................

91

BIOS Menu 4: Hardware Health Configuration.........................................................

95

BIOS Menu 5: ACPI Configuration.............................................................................

97

BIOS Menu 6: Advanced ACPI Configuration ..........................................................

98

BIOS Menu 7: MPS Configuration ..........................................................................

100

BIOS Menu 8: USB Configuration...........................................................................

101

BIOS Menu 9: USB Mass Storage Device Configuration......................................

103

BIOS Menu 10: PCI/PnP Configuration ..................................................................

106

BIOS Menu 11: Boot.................................................................................................

111

BIOS Menu 12: Boot Settings Configuration.........................................................

112

BIOS Menu 13: Boot Device Priority Settings .......................................................

116

BIOS Menu 14: Removable Drives..........................................................................

117

BIOS Menu 15: Security...........................................................................................

119

BIOS Menu 16: Chipset............................................................................................

120

BIOS Menu 17: NorthBridge Chipset Configuration.............................................

121

BIOS Menu 18: SouthBridge Chipset Configuration ............................................

125

BIOS Menu 19: Power ..............................................................................................

127

BIOS Menu 20: Exit .................................................................................................

130

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A300 Motherboard

 

 

 

Glossary

 

 

 

 

AC ’97

Audio Codec 97

IDE

Integrated Data Electronics

ACPI

Advanced Configuration and

I/O

Input/Output

 

Power Interface

ICH4

I/O Controller Hub 4

APM

Advanced Power Management

L1 Cache

Level 1 Cache

ARMD

ATAPI Removable Media Device

L2 Cache

Level 2 Cache

ASKIR

Shift Keyed Infrared

LCD

Liquid Crystal Display

ATA

Advanced Technology

LPT

Parallel Port Connector

 

Attachments

LVDS

Low Voltage Differential Signaling

BIOS

Basic Input/Output System

MAC

Media Access Controller

CFII

Compact Flash Type 2

OS

Operating System

CMOS

Complementary Metal Oxide

PCI

Peripheral Connect Interface

 

Semiconductor

PIO

Programmed Input Output

CPU

Central Processing Unit

PnP

Plug and Play

Codec

Compressor/Decompressor

POST

Power On Self Test

COM

Serial Port

RAM

Random Access Memory

DAC

Digital to Analog Converter

SATA

Serial ATA

DDR

Double Data Rate

S.M.A.R.T Self Monitoring Analysis and

DIMM

Dual Inline Memory Module

 

Reporting Technology

DIO

Digital Input/Output

SPD

Serial Presence Detect

DMA

Direct Memory Access

S/PDI

Sony/Philips Digital Interface

EIDE

Enhanced IDE

SDRAM

Synchronous Dynamic Random

EIST

Enhanced Intel SpeedStep

 

Access Memory

 

Technology

SIR

Serial Infrared

FFIO

Flexible File Input/Output

UART

Universal Asynchronous

FIFO

First In/First Out

 

Receiver-transmitter

FSB

Front Side Bus

USB

Universal Serial Bus

IrDA

Infrared Data Association

VGA

Video Graphics Adapter

HDD

Hard Disk Drive

 

 

Page xvi

A300 Motherboard

Chapter

1

Introduction

Page 2

o o o o o

A300 Motherboard

1.1 A300 Overview

The A300 is a multimedia Pentium® Mobile processor-based motherboard that powers a Point-of-Care terminal or panel PC for varied purposes. To facilitate multimedia performance, the A300 can connect to slim Combo CD/DVD-ROM, a PCMCIA card socket, and the multimedia and wireless 802.11g functionality. The A300 also comes with an expansion PCI slot which allows flexible implementations making it the perfect platform for comprehensive lifestyle computing applications.

1.1.1 A300 Applications

The A300 is designed for applications in the following areas:

Surveillance

o Digital surveillance

o X-ray imaging terminal o Bedside entertainment

o Multimedia advertising platform General Computing

o Computer-based testing center

o General purpose information system o Mobile nursing station

o Interactive education uses Automation & Control

o Plant environment monitoring

o Factory automation HMI terminal o Shop-floor/MES control Self-service Kiosk

Full-service receptionist kiosk

Hospital self-registering terminal

Interactive photo kiosk

Video rental kiosk

Self-service POS terminal

Page 3

A300 Motherboard

1.1.2 A300 Benefits

Some of the A300 benefits include:

Clinical Information System (CIS) integration

Filmless solution by PACS

Reduced maintenance costs

Client crash prevention

Central resource control

1.1.3 A300 Features

Some of the A300 features are listed below:

LPX form factor

RoHS compliant

Intel Pentium M / Celeron M processor supported

Digital dual-independent display functionality

Low power consumption

Two high performance gigabit Ethernet controllers on-board

Medical power input fully supported

CompactFlash® card and PCMCIA socket solutions

Integrated audio

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A300 Motherboard

1.2 A300 Board Overview

Figure 1-1: A300 Overview

Page 5

A300 Motherboard

Figure 1-2: A300 Solder Side Overview

1.2.1 A300 Connectors

The A300 has the following connectors on-board:

1 x ATX power connector

1 x Audio connector

1 x CompactFlash® card socket

3 x Cooling fan connectors

1 x Front panel connector

1 x 8 bits GPIO connector

2 x 44-pin IDE connectors

1 x Inverter connector

1 x IR interface connector

Page 6

A300 Motherboard

1 x Disk LED connector

1 x PCMCIA slot

1 x Power button connector

3 x RS-232 serial port connectors

1 x RS-422/485 serial port connector

1 x System panel connector

1 x LCD LVDS connector

3 x USB2.0 connectors

The A300 has the following connectors on the board rear panel:

1 x Audio connector

1 x COM port jumper

1 x DVI-I connector

3 x Serial port connectors

1 x CRT connector

1 x PS/2 keyboard connector

1 x PS/2 mouse connector

2 x USB 2.0 connectors

2 x LAN RJ-45 connectors

The A300 has the following on-board jumpers:

Clear CMOS

CF Card Setup

COM Port Jumper Settings

LCD Voltage Setup

LCD Rotate Setup

1.2.2 Technical Specifications

A300 technical specifications are listed in Table 1-1. Detailed descriptions of each

specification can be found in Chapter 2.

Page 7

 

A300 Motherboard

 

 

Specification

A300

 

 

CPU

Intel® Pentium M/Celeron M 400Mhz FSB up to 2.10GHz

System Chipset

Intel® 855GME + ICH4

Display

CRT integrated in Intel® 855GME

DVI integrated in Silicon Image SiI164

 

 

 

TTL/LVDS

Dual channel 18-bit LVDS integrated in Intel® 855GME

Supports independent dual display

 

 

 

Memory

Supports two DDR 266/333 184-pin DIMM modules up to 2GB

 

 

BIOS

AMI BIOS

 

 

SSD

Compact Flash (CF)

 

 

Audio

AC'97 Codec Realtek ALC655

 

 

LAN

Dual Realtek RTL8110S/SC GbE

 

 

COM

Five RS-232 and

One RS-232/422/RS-485

 

 

 

USB2.0

Six USB 1.1 or USB 2.0 devices supported

 

 

IDE

Two 44-pin IDE connects to four Ultra ATA33/66/100 devices

 

 

Watchdog Timer

Software programmable 1-255 sec. by supper I/O

 

 

Digital I/O

One GPIO connector

 

 

Expansion

One PCI slot

One PCMCIA slot

 

 

 

Power Supply

ATX power support

 

 

Temperature

0ºC - 60ºC

 

 

Humidity (operating)

5%~95% non-condensing

 

 

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A300 Motherboard

Dimensions

235mm x 220mm

 

 

Weight (GW/NW)

1200g/680g

 

 

Table 1-1: Technical Specifications

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A300 Motherboard

Chapter

2

Detailed Specifications

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A300 Motherboard

2.1 Overview

This chapter describes the specifications and on-board features of the A300 in detail.

2.2Dimensions

2.2.1Board Dimensions

The dimensions of the board are listed below:

Length: 235mm

Width: 220mm

Figure 2-1: A300 Dimensions (mm)

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A300 Motherboard

2.2.2 External Interface Panel Dimensions

External peripheral interface connector panel dimensions are shown in Figure 2-2.

Figure 2-2: External Interface Panel Dimensions (mm)

2.3 Data Flow

The A300 motherboard comes with an Intel® Pentium M / Celeron M CPU. Figure 2-3 shows the data flow between the system chipset, the CPU and other components installed on the motherboard.

Figure 2-3: Data Flow Block Diagram

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A300 Motherboard

2.4Compatible Processor

2.4.1CPU Overview

Socket 479 Intel® Pentium® M processors with enhanced Intel SpeedStep® Technology and Socket 479 Intel® Celeron® M processors can be installed on the A300 motherboard.

2.4.2 Supported Processors

Specifications for the compatible processors are listed in Table 2-1 below:

Family

Number

Architecture

Cache

 

 

 

FSB

 

 

 

 

 

 

 

 

Pentium® M

765

90 nm

2 MB L2

2.10 GHz

 

400 MHz

 

 

 

 

 

 

 

Pentium® M

755

90 nm

2 MB L2

2.0 GHz

 

400 MHz

 

 

 

 

 

 

 

Pentium® M

745

90 nm

2 MB L2

1.80 GHz

 

400 MHz

 

 

 

 

 

 

 

Pentium® M

735

90 nm

2 MB L2

1.70 GHz

 

400 MHz

 

 

 

 

 

 

 

Pentium® M

725

90 nm

2 MB L2

1.60 GHz

 

400 MHz

 

 

 

 

 

 

 

Pentium® M

715

90 nm

2 MB L2

1.50 GHz

 

400 MHz

 

 

 

 

 

 

 

Pentium® M

710

90 nm

2 MB L2

1.40 GHz

 

400 MHz

 

 

 

 

 

 

 

Celeron® M

390

90 nm

1 MB L2

1.70 GHz

 

400 MHz

 

 

 

 

 

 

 

Celeron® M

380

90 nm

1 MB L2

1.60 GHz

 

400 MHz

 

 

 

 

 

 

 

Celeron® M

370

90 nm

1 MB L2

1.50 GHz

 

400 MHz

 

 

 

 

 

 

 

Celeron® M

360

90 nm

1 MB L2

1.40 GHz

 

400 MHz

 

 

 

 

 

 

 

Celeron® M

350

90 nm

1 MB L2

1.30 GHz

 

400 MHz

 

 

 

 

 

 

 

 

Table 2-1: Supported Processors

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A300 Motherboard

2.5Intel® 855GME Chipset Graphics Memory Controller Hub

2.5.1Intel® 855GME Overview

The Intel® 855GME chipset comes with the following features:

400 MHz system bus delivers a high-bandwidth connection between the processor and the platform

Integrated graphics utilizing Intel® Extreme Graphics 2 technology AGP 4X support

Three USB host controllers provide high-performance peripherals with 480 Mbps of bandwidth, while enabling support for up to six USB 2.0 ports. The latest AC '97 implementation delivers 20-bit audio for enhanced sound quality and full surround sound capability

LAN Connect Interface (LCI) provides flexible network solutions such as 10/100 Mbps Ethernet and 10/100 Mbps Ethernet with LAN manageability Dual Ultra ATA/100 controllers, coupled with the Intel® Application Accelerator support faster IDE transfers to storage devices

The Intel Application Accelerator software provides additional performance over native ATA drivers by improving I/O transfer rates and enabling faster O/S load time, resulting in accelerated boot times

Communication and Network Riser (CNR) offers flexibility in system configuration with a baseline feature set that can be upgraded with an audio card, modem card, or network card

Error Correcting Code (ECC) support in integrated graphics mode only

2.5.2 Intel® 855GME Memory Support

The Intel® 855GME supports two DDR memory modules with frequencies up to 333MHz. The A300 has two 184-pin DDR DIMM SDRAM socket that supports two 200MHz, 266MHz or 333MHz DDR DIMM memory module with a maximum capacity of 2GB.

2.5.3 Intel® 855GME Internal Graphics Controller

The Intel® 855GME supports both CRT and TFT in a dual display mode. The following

display specifications.

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A300 Motherboard

Graphics Core Frequency

o Display/Render frequency up to 250 MHz (with 1.35 V core voltage) 3D Graphics Engine

o 3D Setup and Render Engine o Zone Rendering

o High-quality performance Texture Engine Analog Display Support

o 350-MHz integrated 24-bit RAMDAC o Hardware color cursor support

o Accompanying I2C and DDC channels provided through multiplexed interface

o Dual independent pipe for dual independent display

o Simultaneous display: same images and native display timings on each display device

Digital Video Out Port (DVOB & DVOC) support

o DVOB & DVOC with 165-MHz dot clock support for each 12-bit interface o Compliant with DVI Specification 1.5

Dedicated LFP (local flat panel) support

o Single or dual channel LVDS panel support up to UXGA panel resolution with frequency range from 25 MHz to 112 MHz per channel

o SSC support of 0.5%, 1.0%, and 2.5% center and down spread with external SSC clock

o Supports data format of 18 bpp

o LCD panel power sequencing compliant with SPWG timing specification o Compliant with ANSI/TIA/EIA 644-1995 spec

o Integrated PWM interface for LCD backlight inverter control o Bi-linear Panel fitting

Internal Graphics Features (Intel 855GME chipset)

o Core Vcc = 1.2 V or 1.35 V (to support higher graphics core frequency and DDR333)

o Graphics core frequency

Display core frequency at 133 MHz, 200 MHz, 250 MHz

Render core frequency at 100 MHz, 133 MHz, 166 MHz, 200 MHz, 250 MHz Intel® Dual-Frequency Graphics Technology

o 3D Graphics Engine

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A300 Motherboard

Enhanced Hardware Binning Instruction Set supported Bi-Cubic Filtering supported

Linear Gamma Blending for Video Mixer Rendering (VMR) Video Mixer Rendering (VMR) supported

o Graphics Power Management

Dynamic Core Frequency Switching

Intel® Smart 2D Display Technology Memory Self-Refresh During C3

Intel® Display Power Saving Technology

2.5.4 Intel® 855GME Power Management

The power management for the Intel® 855GME is listed below:

Optimized Clock Gating for 3D and Display Engines

On-die thermal sensor

2.6Intel® 82801DB I/O Controller Hub (ICH4)

2.6.1Intel® ICH4 Overview

The Intel® ICH4 I/O controller hub comes with the following features:

PCI Local Bus Specification, Revision 2.2-compliant with support for 33 MHz PCI operations.

ACPI Power Management Logic Support

Enhanced DMA controller, Interrupt controller, and timer functions Integrated IDE controller supports Ultra ATA100/66/33

USB host interface with support for 6 USB ports; 3 UHCI host controllers; 1 EHCI high-speed

USB 2.0 Host controller Integrated LAN controller

System Management Bus (SMBus) Specification, Version 2.0 with additional support for I2C devices

Supports Audio Codec ’97, Revision 2.3 specification Low Pin Count (LPC) interface

Firmware Hub (FWH) interface support

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A300 Motherboard

Alert On LAN* (AOL) and Alert On LAN 2* (AOL2)

2.6.2 Intel® ICH4 IDE Interface

The single A300 IDE connector supports two IDE hard disks and ATAPI devices. PIO IDE transfers up to 16MB/s and Ultra ATA transfers of 100MB/s. The integrated IDE interface is able to support the following IDE HDDs:

The onboard ATA-6 controller is able to support the following IDE HDDs:

Ultra ATA/100, with data transfer rates up to 100MB/s

Ultra ATA/66, with data transfer rates up to 66MB/s

Ultra ATA/33, with data transfer rates up to 33MB/s

Specification

Ultra ATA/100

 

 

 

Ultra ATA/100

 

 

 

 

 

 

IDE devices

2

2

 

2

 

 

 

 

 

PIO Mode

0 – 4

0 – 4

 

0 – 4

 

 

 

 

 

PIO Max Transfer Rate

16.6 MB/s

16.6 MB/s

 

16.6 MB/s

 

 

 

 

 

DMA/UDMA designation

UDMA 3 - 4

UDMA 3 – 4

 

UDMA 2

 

 

 

 

 

DMA/UDMA Max Transfer

100MB/s

66MB/s

 

33MB/s

 

 

 

 

 

Controller Interface

5V

5V

 

5V

 

 

 

 

 

 

Table 2-2: Supported HDD Specifications

2.6.3 Intel® ICH4 Compact Flash Interface

The A300 CompactFlash socket supports standard CF Type I and CF Type II cards. The chipset flash interface is multiplexed with an IDE interface and can be connected to an array of industry standard NAND Flash or NOR Flash devices.

2.6.4 Intel® ICH4 Audio Codec 97 (AC’97) Controller

The Audio Codec ’97 (AC’97) controller integrated into the ICH4 complies with AC’97 Component Specification, Version 2.3. The AC’97 controller is connected to the onboard

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A300 Motherboard

audio connector. The audio connector is connected to an audio kit with an embedded AC’97 audio codec. The AC’97 controller supports up to six PCM audio output channels. Complete surround sound requires six-channel audio consisting of:

Front left

Front right

Back left

Back right

Center

Subwoofer

2.6.5 Intel® ICH4 USB Controller

Two external USB ports on the A300 board are interfaced to the chipset USB controller. Six USB 1.1 or USB 2.0 devices can be connected simultaneously to the A300. The chipset USB controller has the following specifications:

6 USB ports

USB 1.1 and USB 2.0 compliant

3 Universal Host Controller Interface (UHCI) controllers High-speed, full-speed and low-speed capable

2.6.6 Intel® ICH4 PCI Interface

The PCI interface on the ICH4 is compliant with the PCI Revision 2.2 implementation. Some of the features of the PCI interface are listed below.

PCI Revision 2.2 compliant 33MHz

5V tolerant PCI signals (except PME#)

Integrated PCI arbiter supports up to six PCI bus masters

2.6.7 Intel® ICH4 Low Pin Count (LPC) Interface

The ICH4 LPC interface complies with the LPC 1.0 specifications. The LPC bus from the ICH4 is connected to the following components:

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A300 Motherboard

BIOS chipset

Super I/O chipset

2.6.8 BIOS

The BIOS flash memory chip on the A300 has a licensed copy of AMI BIOS loaded onto it. The BIOS flash memory chip is connected to the chipset via the LPC bus. The flash BIOS features are listed below:

SMIBIOS (DMI) compliant

Console redirection function support

PXE (Pre-Boot Execution Environment) support

USB booting support

2.7PCI Bus Components

2.7.1PCI Bus Overview

The PCI bus controller on the ICH4 is compliant with PCI Revision 2.2 specifications and has a 33MHz PCI clock. The components listed below are all connected to the PCI bus:

PCI socket

Realtek RTL8110S GbE interface

One PCMCIA slot

2.7.2 GbE Ethernet

A highly integrated and cost-effective single-chip, fast RealTek RTL8110S/SC GbE Ethernet controller is interfaced through first the PCI bus to the CPU and system chipset. The RealTek RTL8110S/SC controller provides 10Mbps, 100Mbps or 1000Mbps Ethernet connectivity to the A300. Some of the features of the RealTek RTL8110S/SC are listed below.

Integrated 10/100/1000 transceiver

Auto-Negotiation with Next Page capability

Supports PCI rev.2.3, 32-bit, 33/66MHz

Supports pair swap/polarity/skew correction

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A300 Motherboard

Crossover Detection & Auto-Correction Wake-on-LAN and remote wake-up support

Microsoft® NDIS5 Checksum Offload (IP, TCP, UDP) and largesend offload support

Supports Full Duplex flow control (IEEE 802.3x)

Fully compliant with IEEE 802.3, IEEE 802.3u, IEEE 802.3ab Supports IEEE 802.1P Layer 2 Priority Encoding

Supports IEEE 802.1Q VLAN tagging Serial EEPROM

3.3V signaling, 5V PCI I/O tolerant Transmit/Receive FIFO (8K/64K) support Supports power down/link down power saving Supports PCI Message Signaled Interrupt (MSI)

2.7.3 PCMCIA Slot

The PCMCIA slot supports PCMCIA cards that are compliant with PCMCIA 2.0 standard. The PCMCIA cards are easily installed into the socket. PCMCIA cards are 54.0mm wide, 85.6mm long. Supported PCMCIA cards include wireless LAN cards and GPRS card.

2.8LPC Bus Components

2.8.1LPC Bus Overview

The LPC bus is connected to components listed below:

BIOS chipset

Super I/O chipset

2.8.2 BIOS Chipset

The BIOS chipset has a licensed copy of AMI BIOS installed on the chipset. Some of the BIOS features are listed below:

AMI Flash BIOS

SMIBIOS (DMI) compliant

Console redirection function support

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A300 Motherboard

PXE (Pre-boot Execution Environment) support

USB booting support

2.8.3 Super I/O Chipset

The iTE IT8712F Super I/O chipset is connected to the ICH4 through the LPC bus. The iTE IT8712F is an LPC interface-based Super I/O device that comes with Environment Controller integration. Some of the features of the iTE IT8712F chipset are listed below:

LPC Interface

PC98/99/2001, ACPI and LANDesk Compliant

Enhanced Hardware Monitor

Fan Speed Controller

SmartGuardian Controller

Single +5V Power Supply

Two 16C550 UARTs for serial port control

One IEEE 1284 Parallel Port

Keyboard Controller

Watchdog Timer

Serial IRQ Support

Vbat & Vcch Support

Single +5V Power Supply

Some of the Super I/O features are described in more detail below:

2.8.3.1 Super I/O 16C550 UARTs

The onboard Super I/O has two integrated 16C550 UARTs that can support the following:

Two standard serial ports (COM1 and COM2)

IrDa 1.0 and ASKIR protocols

Another two chipsets connected to the LPC bus provided connectivity to another four serial port connectors (COM3, COM4, COM5 and COM6).

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A300 Motherboard

2.8.3.2 Super I/O Enhanced Hardware Monitor

The Super I/O Enhanced Hardware Monitor monitors three thermal inputs, VBAT internally, and eight voltage monitor inputs. These hardware parameters are reported in the BIOS and can be read from the BIOS Hardware Health Configuration menu.

2.8.3.3 Super I/O Fan Speed Controller

The Super I/O fan speed controller enables the system to monitor the speed of the fan. One of the pins on the fan connector is reserved for fan speed detection and interfaced to the fan speed controller on the Super I/O. The fan speed is then reported in the BIOS.

2.8.3.4 Super I/O Keyboard Controller

The Super I/O keyboard controller can execute the 8042 instruction set. Some of the keyboard controller features are listed below:

The 8042 instruction is compatible with a PS/2 keyboard and PS/2 mouse Gate A20 and Keyboard reset output

Supports multiple keyboard power on events

Supports mouse double-click and/or mouse move power on events

2.8.4 LPC I/O Chipset

The LPC I/O chipset is connected to the ICH4 through the LPC bus and complies with the Intel® Low Pin Count Specification Rev. 1.0. The LPC I/O chipset supports two standard serial ports.

2.9Environmental and Power Specifications

2.9.1System Monitoring

Three thermal inputs on the A-300 Super I/O Enhanced Hardware Monitor monitor the following temperatures:

System temperature

Temperature Sensor #1

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A300 Motherboard

Eight voltage inputs on the A-300 Super I/O Enhanced Hardware Monitor monitor the following voltages:

Vcore +3.30Vin +5.00Vin +12Vin

The A-300 Super I/O Enhanced Hardware Monitor also monitors the CPU fan speeds.

2.9.2 Operating Temperature and Temperature Control

The maximum and minimum operating temperatures for the A300 are listed below.

Minimum Operating Temperature: 0ºC (32°F)

Maximum Operating Temperature: 60°C (140°F)

A cooling fan and heat sink must be installed on the CPU. Thermal paste must be smeared on the lower side of the heat sink before it is mounted on the CPU. Heat sinks are also mounted on the northbridge and southbridge chipsets to ensure the operating temperature of these chips remain low.

2.9.3 Power Consumption

Table 2-3 shows the power consumption parameters for the A300 when an Intel® Pentium® M 1.6GHz CPU is running with one 256MB DDR333 SDRAM memory module.

Voltage Current

3.3V 0.46A

5V 1.05A

12V 0.41A

5VSB 0.29A

-12V 0.74A

Table 2-3: Power Consumption

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A300 Motherboard

Chapter

3

Unpacking

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A300 Motherboard

3.1 Anti-static Precautions

WARNING:

Failure to take ESD precautions during the installation of the A300 may result in permanent damage to the A300 and severe injury to the user.

Electrostatic discharge (ESD) can cause serious damage to electronic components, including the A300. Dry climates are especially susceptible to ESD. It is therefore critical that whenever the A300, or any other electrical component is handled, the following anti-static precautions are strictly adhered to.

Wear an anti-static wristband: - Wearing a simple anti-static wristband can help to prevent ESD from damaging the board.

Self-grounding:- Before handling the board touch any grounded conducting material. During the time the board is handled, frequently touch any conducting materials that are connected to the ground.

Use an anti-static pad: When configuring the A300, place it on an antic-static pad. This reduces the possibility of ESD damaging the A300.

Only handle the edges of the PCB:-: When handling the PCB, hold the PCB by the edges.

3.2Unpacking

3.2.1Unpacking Precautions

When the A300 is unpacked, please do the following:

Follow the anti-static precautions outlined in Section 3.1.

Make sure the packing box is facing upwards so the A300 does not fall out of the box.

Make sure all the components shown in Section 3.3 are present.

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A300 Motherboard

3.3 Unpacking Checklist

NOTE:

If some of the components listed in the checklist below are missing, please do not proceed with the installation. Contact the IEI reseller or vendor you purchased the A300 from or contact an IEI sales representative directly. To contact an IEI sales representative, please send an email to sales@iei.com.tw.

3.3.1 Package Contents

The A300 is shipped with the following components:

Quantity

Item

Image

 

 

 

1

A300 single board computer

 

 

 

 

1

IDE flat cable 44p/40p/40p

 

 

 

 

1

IDE flat cable 44p/44p

 

 

 

 

2

Single port RS-232 cable

 

 

 

 

1

RS-232/422/485 cable

 

 

 

 

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A300 Motherboard

1

Mini jumper pack

 

 

 

 

1

Quick installation guide

 

 

 

 

1

Utility CD

 

 

 

 

Table 3-1: Package List Contents

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A300 Motherboard

Chapter

4

Connector Pinouts

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A300 Motherboard

4.1 Peripheral Interface Connectors

Section 4.1.2 shows peripheral interface connector locations. Section 4.1.2 lists all the peripheral interface connectors seen in Section 4.1.2.

4.1.1 A300 Layout

Figure 4-1 shows the on-board peripheral connectors, rear panel peripheral connectors

and on-board jumpers.

Figure 4-1: Connector and Jumper Locations

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A300 Motherboard

Figure 4-2: Connector and Jumper Locations (Solder Side)

4.1.2 Peripheral Interface Connectors

Table 4-1 shows a list of the peripheral interface connectors on the A300. Detailed

descriptions of these connectors can be found below.

Connector

Type

Label

 

 

 

ATX power connector

20-pin connector

PW1

 

 

 

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A300 Motherboard

Audio connector

3-pin wafer connector

AUDIO1

 

 

 

Compact Flash (CF) connector

50-pin CF slot

CN7

 

 

 

Fan connector (CPU)

3-pin wafer connector

CPU_FAN1

 

 

 

Fan connector (System)

3-pin wafer connector

SYS_FAN1

 

 

 

Fan connector (System)

3-pin wafer connector

SYS_FAN2

 

 

 

Front panel connector

10-pin header

CN5

 

 

 

GPIO connector

10-pin header

DIO1

 

 

 

IDE Interface connector (primary)

44-pin box header

IDE1

 

 

 

IDE Interface connector (secondary)

44-pin box header

IDE2

 

 

 

Inverter power connector

6-pin wafer connector

CN3

 

 

 

IR interface connector

5-pin header

IR1

 

 

 

LED connector

2-pin header

CN9

 

 

 

Power button connector

2-pin header

CN15

 

 

 

Serial port connector (RS-422/485)

14-pin header

COM3

 

 

 

Serial port connector (RS-232)

10-pin header

COM4

 

 

 

Serial port connector (RS-232)

10-pin header

COM5

 

 

 

Serial port connector (RS-232)

10-pin header

COM6

 

 

 

System panel connector

12-pin header

CN12

 

 

 

TFT LCD LVDS connector

30-pin crimp connector

CN8

 

 

 

USB connector

8-pin header

USB2

 

 

 

USB connector

5-pin wafer connector

USB3

 

 

 

USB connector

5-pin wafer connector

USB4

 

 

 

Table 4-1: Peripheral Interface Connectors

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A300 Motherboard

4.1.3 External Interface Panel Connectors

Table 4-2 lists the rear panel connectors on the A300. Detailed descriptions of these connectors can be found in Section 0 on page 50.

Connector

 

 

 

Label

 

 

 

 

 

Audio connectors

Audio jack

 

CN11

 

 

 

 

DVI-I connector

Female DVI-I

 

DVI1

 

 

 

 

Ethernet connectors

RJ-45 connector

 

LAN1

 

 

 

 

Keyboard/mouse connector

PS/2 connector

 

KB_MS1

 

 

 

 

RS-232 serial port connector (COM1)

DB-9 connector

 

CN1.B

 

 

 

 

RS-232 serial port connectors (COM2, COM3)

DB-9 connector

 

J5

 

 

 

 

USB ports

USB port

 

USB1

 

 

 

 

VGA port connector

15-pin female

 

CN1.A

 

 

 

 

 

Table 4-2: Rear Panel Connectors

 

 

 

 

4.2 Internal Peripheral Connectors

Internal peripheral connectors are found on the motherboard and are only accessible when the motherboard is outside of the chassis. This section has complete descriptions of all the internal, peripheral connectors on the A300.

4.2.1 ATX Power Connector

CN Label:

PW1

CN Type:

20-pin ATX power connector (2x10)

CN Location:

See Figure 4-3

CN Pinouts:

See Table 4-3

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A300 Motherboard

The 20-pin ATX power connector is connected to an AT power supply.

Figure 4-3: ATX Power Connector Location

PIN NO.

DESCRIPTION

PIN NO.

DESCRIPTION

 

 

 

 

 

 

 

 

1

3.3V

11

3.3V

 

 

 

 

2

3.3V

12

-12V

 

 

 

 

3

GND

13

GND

 

 

 

 

4

5V

14

PSON

 

 

 

 

5

GND

15

GND

 

 

 

 

6

5V

16

GND

 

 

 

 

7

GND

17

GND

 

 

 

 

8

PWR OK

18

-5V

 

 

 

 

9

5VSB

19

5V

 

 

 

 

10

12V

20

5V

 

 

 

 

Table 4-3: ATX Power Connector Pinouts

4.2.2 Audio Connector

CN Label:

AUDIO1

CN Type: 3-pin wafer connector

CN Location:

See Figure 4-4

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