Intel MB820 User manual

MB820

Socket 478 Pentium

®

4

Intel

®

875P Chipset

Industrial Motherboard

USER’S MANUAL

Version 1.0

ii MB820 User’s Manual

Acknowledgments

Award is a registered trademark of Award Software International,

Inc.

PS/2 is a trademark of International Business Machines

Corporation.

Intel and Pentium 4 are registered trademarks of Intel Corporation.

Microsoft Windows is a registered trademark of Microsoft

Corporation.

Winbond is a registered trademark of Winbond Electronics

Corporation.

All other product names or trademarks are properties of their

respective owners.

MB820 User’s Manual iii

Table of Contents

Introduction....................................................... 1

Checklist...........................................................................1

Product Description ..........................................................2

Board Dimensions.............................................................3

Installations....................................................... 4

ATX Power Installation.....................................................5

Installing the Memory.......................................................5

Setting the Jumpers...........................................................6

Connectors on MB820.....................................................11

Watchdog Timer Configuration.......................................23

BIOS Setup....................................................... 27

Drivers Installation...................................... 49

Intel 875P Chipset Software Intallation Utility.................50

Realtek AC97 Codec Audio Driver Installation ...............53

Intel PRO LAN Drivers Installation.................................54

VGA Drivers Installation.................................................55

iv MB820 User’s Manual

This page is intentionally left blank.

INTRODUCTION

MB820 User’s Manual 1

Introduction

Checklist

Your MB820 Pentium

®

4 motherboard package should include the items

listed below:

• The MB820 motherboard

• This User’s Manual

• 1 Backplate

• 2 IDE Cable

• 1 Floppy Cable

• 2 SATA Cable

• 1 Dual-Serial-Port Cable

• 1 CD containing the following:

• Chipset Drivers

• Flash Memory Utility

INSTALLATIONS

2 MB820 User’s Manual

Product Description

The MB820 Pentium

®

4 motherboard incorporates the Intel 875P chipset

that can utilize a single PGA478 processor of up to 3.2GHz or higher and

supports FSB frequency of 400/533/800Mhz (100Mhz, 133Mhz, and

200Mhz HCLK respectively).

The 875P chipset is designed for use with the Pentium

®

4 processor with

512-KB L2 cache on 0.13 micron process. The integrated MCH

component provides the CPU interface, DDR interface, AGP interface,

Hub Interface and AGP 8X graphics interface.

Four DDR memory sockets supports DDR 400/333/266 SDRAM

DIMM modules of up to 4GB in capacity. ECC is also supported.

The board also comes optional with either integrated 10/100MB LAN

support or an Intel

®

82547GI Gigabit LAN controller. Two Serial ATA

connectors offer 1.5 Gigabits/sec data throughput speed - faster than the

most advanced parallel ATA.

Expansion is provided by four PCI slots, two ISA slots and one AGP8X

interface. Other advanced features include six USB 2.0 ports, IrDA

interface, PCI to ISA bridge, digital I/O, four serial ports, watchdog timer

and audio function. Dimensions of the board are 12” by 9.5” in an ATX

form factor.

INTRODUCTION

MB820 User’s Manual 3

Board Dimensions

INSTALLATIONS

4 MB820 User’s Manual

Installations

This section provides information on how to use the jumpers and

connectors on the MB820 in order to set up a workable system. The

topics covered are:

ATX Power Installation

Installing the Memory

Setting the Jumpers

Connectors on MB820

Watchdog Timer Configuration

INSTALLATIONS

MB820 User’s Manual 5

ATX Power Installation

The system power is provided to the motherboard with the ATXP1 and

ATXP2 ATX power connectors. ATXP2 is a 4-pin 12V power connector.

ATXP1 is to be connected to a standard ATX power connector.

Installing the Memory

The MB820 motherboard supports four DDR memory sockets for a

maximum total memory of 4GB in DDR memory type. You can install

unbuffered & ECC DDR DIMMs. It supports DDR266 when installed

with CPUs that have clock speeds of 400MHz. It supports DDR266/333

when installed with CPUs that have clock speeds of 533MHz. It supports

DDR266/320/400 when installed with CPUs that have clock speeds of

800MHz. The board provides dual channel functionality for its DIMM

slots. DIMM1/2is for one channel and DIMM3/4 is for another channel.

Enabling dual channels can increase data access rates by putting two

similar-size DDR modules into two same-color DIMM slots.

Basically, the system memory interface has the following features:

Supports two 64-bit wide DDR data channels

Available bandwidth up to 3.2GB/s (DDR400) for single-channel

mode and 6.4GB/s (DDR400) in dual-channel mode.

Supports ECC DIMMs.

Supports 128Mb, 256Mb, 512Mb, 1Gb DDR technologies.

Supports only x8, x16, DDR devices with four banks

Registered DIMMs not supported

Supports opportunistic refresh

Up to 16 simultaneously open pages (four per row, four rows

maximum)

INSTALLATIONS

6 MB820 User’s Manual

Setting the Jumpers

Jumpers are used on MB820 to select various settings and features

according to your needs and applications. Contact your supplier if you

have doubts about the best configuration for your needs. The following

lists the connectors on MB820 and their respective functions.

Jumper Locations on MB820.............................................................7

JP1: RS232/422/485 (COM2) Selection..........................................8

JP2: COM1 RS232 +5V/+12V Power Setting.................................8

JP3: COM2 RS232 +5V/+12V Power Setting.................................8

JP4: Clear CMOS Contents................................................................9

JP5: COM3 RS232 +5V/+12V Power Setting.................................9

JP6: COM4 RS232 +5V/+12V Power Setting.................................9

JP7: DiskOnChip Address Select.....................................................10

JP8: Onboard VGA Enable/Disable.................................................10

INSTALLATIONS

MB820 User’s Manual 7

Jumper Locations on MB820

Jumper Locations on MB820..............................................................Page

JP1: RS232/422/485 (COM2) Selection..................................................8

JP2: COM1 RS232 +5V/+12V Power Setting ........................................8

JP3: COM2 RS232 +5V/+12V Power Setting ........................................8

JP4: Clear CMOS Contents.......................................................................9

JP5: COM3 RS232 +5V/+12V Power Setting ........................................9

JP6: COM4 RS232 +5V/+12V Power Setting ........................................9

JP7: DiskOnChip Address Select.............................................................10

JP8: Onboard VGA Enable/Disable........................................................10

INSTALLATIONS

8 MB820 User’s Manual

JP1: RS232/422/485 (COM2) Selection

COM1 is fixed for RS-232 use only.

J3, COM2 is selectable for RS232, RS-422 and RS-485.

The following table describes the jumper settings for COM2 selection.

COM2

Function

RS-232 RS-422 RS-485

Jumper

Setting

(pin closed)

Short:

1-2

9-11

10-12

15-17

16-18

Short:

3-4

7-9

8-10

13-15

14-16

Short:

5-6

7-9

8-10

13-15

14-16

JP2: COM1 RS232 +5V/+12V Power Setting

JP2 Setting Function

Pin 1-2

Short/Closed

+12V

Pin 3-4

Short/Closed

Normal

Pin 5-6

Short/Closed

+5V

JP3: COM2 RS232 +5V/+12V Power Setting

JP3 Setting Function

Pin 1-2

Short/Closed

+12V

Pin 3-4

Short/Closed

Normal

Pin 5-6

Short/Closed

+5V

INSTALLATIONS

MB820 User’s Manual 9

JP4: Clear CMOS Contents

Use JP4, a 3-pin header, to clear the CMOS contents. Note that the

ATX-power connector should be disconnected from the motherboard

before clearing CMOS.

JP4 Setting Function

Pin 1-2

Short/Closed

Normal

Pin 2-3

Short/Closed

Clear CMOS

JP5: COM3 RS232 +5V/+12V Power Setting

JP5 Setting Function

Pin 1-2

Short/Closed

+12V

Pin 3-4

Short/Closed

Normal

Pin 5-6

Short/Closed

+5V

JP6: COM4 RS232 +5V/+12V Power Setting

JP6 Setting Function

Pin 1-2

Short/Closed

+12V

Pin 3-4

Short/Closed

Normal

Pin 5-6

Short/Closed

+5V

INSTALLATIONS

10 MB820 User’s Manual

JP7: DiskOnChip Address Select

JP7 Address

D0000-D7FFF

D8000-DFFFF (default)

JP8: Onboard VGA Enable/Disable

Use JP8 to enable or disable the onboard VGA controller.

JP8 Setting Onboard VGA

Pin 1-2

Short/Closed

Enabled

Pin 2-3

Short/Closed

Disabled

INSTALLATIONS

MB820 User’s Manual 11

[

Connectors on MB820

The connectors on MB820 allows you to connect external devices such as

keyboard, floppy disk drives, hard disk drives, printers, etc. The following

table lists the connectors on MB820 and their respective functions.

Connector Locations on MB820..........................................12

ATXP1: ATX Power Supply Connector...............................13

ATXP2: ATX 12V Power Connector...................................13

DIMM1, DIMM2: DDR Channel A Connectors..................13

DIMM3, DIMM4: DDR Channel B Connectors..................13

AGP1: AGP Slot....................................................................13

PCI1, PCI2, PCI3, PCI4: PCI Slots......................................13

SL1, SL2: ISA Slots...............................................................13

CN1: PS/2 Keyboard and PS/2 Mouse Connectors.............14

CN2: 4-port USB Connector................................................14

CN3, J3: Serial Ports.............................................................14

CN4: Parallel Port Connector...............................................15

CN6: VGA CRT Connector..................................................15

CN7: USB and LAN RJ45 Connectors................................16

CN8: Audio Connector.........................................................16

J1: IrDA Connector ...............................................................16

J4: CD-In Audio Connector..................................................16

J5, J6: Serial ATA (SATA) Connectors................................17

J8, J10: COM3 and COM4 Serial Ports Connector ............17

J9: Wake On LAN Connector...............................................17

J11: Digital I/O Connector (4 in, 4 out)...............................18

J12: System Function Connector..........................................18

FAN1: CPU Fan Power Connector......................................20

FAN2: VGA Fan Power Connector .....................................20

FAN3: Chassis Fan Power Connector..................................20

FDD1: Floppy Drive Connector...........................................21

IDE, IDE2: Primary and Secondary IDE Connectors ..........22

INSTALLATIONS

12 MB820 User’s Manual

Connector Locations on MB820

INSTALLATIONS

MB820 User’s Manual 13

ATXP1: ATX Power Supply Connector

ATXP1 is a 20-pin ATX power supply connector. Refer to the following

table for the pin out assignments.

Signal Name Pin # Pin # Signal Name

3.3V 11 1 3.3V

-12V 12 2 3.3V

Ground 13 3 Ground

PS-ON 14 4 +5V

Ground 15 5 Ground

Ground 16 6 +5V

Ground 17 7 Ground

-5V 18 8 Power good

+5V 19 9 5VSB

+5V 20 10 +12V

11 1

20 10

ATXP2: ATX 12V Power Connector

Pin # Signal Name

1 Ground

2 Ground

3 +12V

4 +12V

DIMM1, DIMM2: DDR Channel A Connectors

DIMM1 and DIMM2 are the first DDR channel connectors that must be

use together at one time in order for the system to function properly.

DIMM3, DIMM4: DDR Channel B Connectors

DIMM3 and DIMM4 are the second DDR channel connectors that must

be use together at one time in order for the system to function properly.

AGP1: AGP Slot

PCI1, PCI2, PCI3, PCI4: PCI Slots

SL1, SL2: ISA Slots

INSTALLATIONS

14 MB820 User’s Manual

CN1: PS/2 Keyboard and PS/2 Mouse Connectors

PS/2 Mouse

PS/2 Keyboard

Signal Name

Keyboard Mouse Signal Name

Keyboard data 1 1 Mouse data

N.C. 2 2 N.C.

GND 3 3 GND

5V 4 4 5V

Keyboard clock 5 5 Mouse clock

N.C. 6 6 N.C.

CN2: 4-port USB Connector

CN2 is a USB connector consisting of four ports stacked vertically.

Pin Signal Name

1 Ground

2 USB+

3 USB-

CN2

4 Vcc

CN3, J3: Serial Ports

CN3 (COM1) is a DB-9 connector, while J3 is a COM2 pin-header

connector. COM2 is optionally available as a DB-9 connector (CN5).

COM1 COM2

Signal Name Pin # Pin # Signal Name

DCD, Data carrier detect 1 6 DSR, Data set ready

RXD, Receive data 2 7 RTS, Request to send

TXD, Transmit data 3 8 CTS, Clear to send

DTR, Data terminal ready 4 9 RI, Ring indicator

GND, ground 5 10 Not Used

INSTALLATIONS

MB820 User’s Manual 15

CN4: Parallel Port Connector

CN4 is a DB-25 external connector situated on top of the VGA and serial

ports. The following table describes the pin-out assignments of this

connector.

CN4 Parallel Port

Signal Name Pin # Pin # Signal Name

Line printer strobe 1 14 AutoFeed

PD0, parallel data 0 2 15 Error

PD1, parallel data 1 3 16 Initialize

PD2, parallel data 2 4 17 Select

PD3, parallel data 3 5 18 Ground

PD4, parallel data 4 6 19 Ground

PD5, parallel data 5 7 20 Ground

PD6, parallel data 6 8 21 Ground

PD7, parallel data 7 9 22 Ground

ACK, acknowledge 10 23 Ground

Busy 11 24 Ground

Paper empty 12 25 Ground

Select 13 N/A N/A

CN6: VGA CRT Connector

CN6 is a DB-15 VGA connector located beside the COM1 port. The

following table shows the pin-out assignments of this connector.

Signal Name

Pin # Pin # Signal Name

Red 1 2 Green

Blue 3 4 N.C.

GND 5 6 GND

GND 7 8 GND

N.C. 9 10 GND

N.C. 11 12 N.C.

HSYNC 13 14 VSYNC

NC 15

INSTALLATIONS

16 MB820 User’s Manual

CN7: USB and LAN RJ45 Connectors

CN7 consists of an RJ-45 connector (top) and two stacked USB ports.

Refer to the section below for their respective pin assignments.

Pin # Signal Name

1 Vcc

2 USB-

3 USB+

USB0

USB1

4 Ground

CN8: Audio Connector

CN8 is a 3-jack audio connector beside the

USB/RJ45 combo connector.

J1: IrDA Connector

J1 is used for an optional IrDA connector for wireless communication.

Pin # Signal Name

1 +5V

2 No connect

3 Ir RX

4 Ground

5 Ir TX

J4: CD-In Audio Connector

Pin # Signal Name

1 CD Audio R

2 Ground

3 Ground

4 CD Audio L

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Intel MB820 User manual

Intel MB820 User manual

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