Gigabyte 6CX, GA-6CX User Manual

FCC Compliance Statement:

This equipment has been tested and found to comply with limits
for a Class B digital device , pursuant to Part 15 of the FCC
rules. These limits are designed to provide reasonable protection
against harmful interference in residential installations. This
equipment generates, uses, and can radiate radio frequency
energy, and if not installed and used in accordance with the
instructions, may cause harmful interference to radio
communications. However, there is no guarantee that
interference will not occur in a particular installation. If this
equipment does cause interference to radio or television
equipment reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:

-Reorient or relocate the receiving antenna

-Move the equipment away from the receiver

-Plug the equipment into an outlet on a circuit different from that to which the receiver is connected

-Consult the dealer or an experienced radio/television technician for additional suggestions

You are cautioned that any change or modifications to the equipment not expressly approve by the party
responsible for compliance could void Your authority to operate such equipment.

This device complies with Part 15 of the FCC Rules. Operation is subjected 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.

DECLARATION OF CONFORMITY

Per FCC Part 2 Section 2. 1077(a)

Responsible Party Name: G.B.T. INC.

Address: 18305 Valley Blvd., Suite#A

LA Puent, CA 91744

Phone/Fax No: (818) 854- 9338/ [phone]

hereby declare s that the product

Product Name:

Model Number:

Mother Board

Conforms to the following specifications:

FCC Part 15, Subpart B, Section 15.107(a) and Section 15.109(a),
Class B Digital Device

Supplementary Information:

This device complies with part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) This device may not cause harmful
and (2) this device must accept any inference received, including
that may cause undesired operation.

Representative Person's Name: ERIC LU

Signature:

Date: Aug. 27, 1999

Eric Lu

GA- 6CX

Declaration of Conformity

We, Manufacturer/Importer

(full address)

G.B.T. Technology Träding GMbH

Ausschlager Weg 41, 1F, 20537 Hamburg, Germany

declare that the product

( description of the apparatus, system, installation to which it refers)

Mother Board

GA-6CX

is in conformity with

(reference to the specification under which conformity is declared)

in accordance with 89/336 EEC-EMC Directive

EN 55011 Limits and methods of measurement EN 61000-3-2* Disturbances in supply systems caused

of radio disturbance characteristics of EN60555-2 by household appliances and similar

industrial, scientif ic and medical (ISM electrical equipment “Harmonics”
high frequency equipment

EN55013 Limits and methods of measurement EN61000-3-3* Disturbances in supply systems caused
of radio disturbance characteristics of EN60555-3 by household appliances and similar
broadcast receivers and associated electrical equipment “Voltage fluctuations”
equipment

EN 55014 Limits and methods of measurement EN 50081-1 Generic emission standard Part 1:
of radio disturbance characteristics of Residual, commercial and light industry
household electrical appliances,
portable tools and similar electrical EN 50082-1 Generic immunity standard Part 1:
apparatus Residual, commercial and light industry

EN 55015 Limits and methods of measurement EN 55081-2 Generic emission standard Part 2:
of radio disturbance characteristics of Industrial environment
fluorescent lamps and luminaries

EN 55020 Immunity from radio interference of EN 55082-2 Generic immunity standard Part 2:
broadcast receivers and associated Industrial environment
equipment

EN 55022 Limits and methods of measurement ENV 55104 Immunity requirements for household
of radio disturbance characteristics of appliances tools and similar apparatus
information technology equipment

DIN VDE 0855 Cabled distribution systems; Equipment EN 50091- 2 EMC requirements for uninterruptible

part 10 for receiving and/or distribution from power systems (UPS)

part 12 sound and television signals

CE marking (EC conformity marking)

The manufacturer also declares the conformity of above mentioned product

with the actual required safety standards in accordance with LVD 73/23 EEC

EN 60065 Safety requirements for mains operated EN 60950 Safety for information technology equipment

electronic and related apparatus for including electrical business equipment
household and similar general use

EN 60335 Safety of household and similar EN 50091-1 General and Safety requirements for
electrical appliances uninterruptible power systems (UPS)

Manufacturer/Importer

Signature

:

Rex Lin

(Stamp)

Date : Aug. 27, 1999 Name : Rex Lin

6CX

Pentium II/III Processor

Motherboard

USER'S MANUAL

Pentium II/III Processor MAINBOARD

REV. 1.00 Second Edition

R-100-02-091216

How This Manual is Organized

This manual is divided into the following sections:

1) Revision History Manual revision information

2) Item Checklist Product item list

3) Features Product information & specification

4) Hardware Setup Instructions on setting up the motherboard

5) Performance & Block Diagram Product Performance & Block Diagram

6) Suspend to RAM & Dual BIOS Instructions STR installation & Dual BIOS

7) BIOS Setup Instructions on setting up the BIOS software

8) Appendix General reference

Table of Contents

Revision History P.1

Item Checklist P.2

Summary of Features P.3

6CX Motherboard Layout P.5

Page index for CPU Speed Setup / Connectors / Panel and Jumper Definition P.6

Performance List P.27

Block Diagram P.28

Suspend to RAM Installation P.39

Dual BIOS Introduction P.35

Memory Installation P.42

Page index for BIOS Setup P.44

Appendix P.77

6CX Motherboard

1

Revision History

Revision Revision Note Date

1.00 Initial release of the 6CX motherboard user’s manual. Nov.1999

1.00 Second release of the 6CX motherboard user’s manual . Dec.1999

The author assumes no responsibility for any errors or omissions that may appear in this
document nor does the author make a commitment to update the information contained herein.
Third-party brands and names are the property of their respective owners.

Dec. 16, 1999 Taipei, Taiwan, R.O.C

Item Checklist

2

Item Checklist

þThe 6CX Motherboard
þCable for IDE / Floppy device
þCD (IUCD) for motherboard utilities
oInternal COMB Cable
oInternal USB Cable
oCable for SCSI device
þ6CX User’s Manual

þCRIMM Module

6CX Motherboard

3

Summary of Features

Form factor Ÿ 30.5 cm x 20.5 cm ATX SIZE form factor, 4 layers PCB.
CPU

Ÿ Pentium



II/III Processor

Ÿ 256/ 512 KB 2nd cache in CPU

Chipset Ÿ 82820 HOST / AGP / RDRAM Controller

Ÿ 82801AA(ICH) I/O Controller Hub

Clock Generator Ÿ Supports 100 / 133MHz

Ÿ 105/110/115/117/120/125/127/135/137/140/145/150 MHz clocks

(reserved)
Memory Ÿ 2 184-pin RIMM Sockets
I/O Control Ÿ Winbond W83627
Slots Ÿ 1 AMR (Audio Modem Riser) slot

Ÿ 1 Universal AGP slot

(1X / 2X / 4X 1.5V/3.3V device support)

Ÿ 5 32-bit Master PCI Bus slots
Ÿ 1 16-bit ISA Bus slot(Optional)

On-Board IDE

Ÿ An IDE controller on the Intel



82801AA (ICH) PCI chipset
provides IDE HDD/ CD-ROM with PIO, Bus Master and Ultra
DMA/33/66 operation modes

Ÿ Can connect up to four IDE devices

On-Board Peripherals Ÿ 1 Floppy port supports 2 FDD with 360K, 720K,1.2M, 1.44M

and 2.88M bytes

Ÿ 1 Parallel ports supports SPP/EPP/ECP mode
Ÿ 2 Serial Ports (COMA & COMB)
Ÿ 4 USB ports (Front USB Port Optional)
Ÿ 1 IrDA connector for Fast IrDA (Optional)
Ÿ 1 CIR connector (Optional)

Hardware Monitor Ÿ CPU/Power Supply/System Fan Revolution detect

Ÿ CPU Fan Control
Ÿ System Voltage Detect
Ÿ CPU Overheat Warning
Ÿ Chassis Intrusion Detect
Ÿ Display Actual Current Voltage

PS/2 Connector

Ÿ PS/2



Keyboard interface and PS/2 Mouse interface

BIOS

Ÿ Licensed AMI BIOS, 4M bit FLASH ROM
Ÿ Support Dual BIOS

Summary of Features

4

To be continued…
Additional Features Ÿ Internal/External Modem Wake up

Ÿ STR (Suspend-To-RAM)
Ÿ Wake On LAN
Ÿ Keyboard Password Wake up
Ÿ System after AC back
Ÿ Poly fuse for keyboard, USB, Game port over- current p rotection

6CX Motherboard

5

6CX Motherboard Layout

6CX

ISA

AMR

ICH

82801

AUREAL

MCH

82820

ATX PONER

GAME & AUDIO

COMB COMA

LPT

PS/2

USB

JP3 JP27

JP2

RING POW ON

JP28

JP16

JP33

JP24

JP13

CIR

JP1

J9

AUX_IN

CDIN

SPDIF

WAKE ON LAN

BZ1

J2

J1

J13

IDE1

FLOPPY

IDE2

CPU

PCI SLOT1

AGP

PCI SLOT2

PCI SLOT3

PCI SLOT4

PCI SLOT5

TEL

Backup

BIOS

Main
BIOS

JP22

JP18

JP21

JP31

JP32

JP9

SW1

JP15

RIMM 1

RIMM 2

USB

W83627

JP34

BAT1

6CX Motherboard Layout

6

6CX Motherboard

7

$
Page index for CPU Speed Setup / Connectors / Panel and Jumper
Definition

Page

CPU Speed Setup P.8
Connectors P.9
GAME & Audio Port P.9
COMA / COMB / LPT Port P.9
CN3(Back) USB Connector P.10
PS/2 Keyboard & PS/2 Mouse Connector P.10
CPU / Power / System Cooling FAN Power Connector P.11
ATX Power P.11
J8 (IR/CIR)[Optional] P.12
FLOPPY Port P.12
IDE 1(Primary)/ IDE 2(Secondary)Port P.13
SPDIF[Optional] P.13
AUX_IN P.14
CD IN P.14
TEL P.15
Wake On LAN P.15
Ring Power On P.16
CN9 (Front) USB Port [Optional] P.16
JP31 (External SMBUS Device Connector) P.17
JP2 (STR LED Connector) P.17
Panel and Jumper Definition P.18
J9 (2x11 pins jumper) P.18
JP3 (Keyboard Power On) P.19
J27 (Back USB device Wake Up Selection)[Optional] P.29
JP18 (Clear CMOS Function) P.20
JP21 (Safe mode/ Recovery / Normal) P.20
JP22 (Timeout Reboot Function) P.21
JP9 (AMR Select)[Optional] P.21
JP16 (CASE OPEN) P.22
JP28 (Onboard Sound Function Selection) P.22
JP33 (Front USB device Wake Up Selection)[Optional] P.23
JP15 (Top Block Lock) P.23
JP24 (Internal Buzzer Connector) [Optional] P.24

6CX Motherboard Layout

8

JP1 (STR Enable) P.24
JP32 (Over Voltage CPU Speed Up) P.25
JP34 (Write Protect) P.25
BAT1 (Battery) P.26

CPU Speed Setup

8

CPU Speed Setup

The CPU bus frequency can be switched between 100MHz and 133MHz by adjusting JP13 & SW

1. The CPU ratio selection is control by BIOS.
JP13 / SW1 Select the CPU Speed at 100MHz and 133MHz.

AGPCLK CPUCLK JP13 1 2 3 4

70 105 X

○ ○ ○ ○

66.6

100.3

X

○

○

X

○

73.3

110

X

○

X

○

○

76.6

115

X

○

X

○

X

78

117

X

○

X

X

○

80

120

X

○

X X X

83.3

125 X X

○

○ ○

84.6

127 X X

○

○

X

66.6

133.3

X

X

○

X

○

67.5

135 X X

○

X X 68.5

137 X X

X

○

○

70

140 X X

X

○

X

72.5

145 X X X X

○

75

150 X x X X

X

66.6

100/133/Au

to

○

X

○

X

○

(O: ON / X : OFF)

SW1

ON

JP13

1

100MHz

JP13

1

133MHz

JP13

1

100/133/Auto

1 2 3 4

SW1

ON

1 2 3 4

SW1

ON

1 2 3 4

6CX Motherboard

9

Connectors

GAME & Audio Port

MIC

GAME

Port

Line

Line Out

COM A / COMB / LPT Port

COM A

LPT PORT

COM B

Connectors

10

CN3 (Back) : USB Connector

Pin No. Definition

1 USB V0
2 USB D0­3 USB D0+
4 GND
5 USB V1
6 USB D1­7 USB D1+
8 GND

1 2

3 4

8 7 6 5

PS/2 Keyboard & PS/2 Mouse Connector

PS/2 Mouse/

Keyboard

Pin No. Definition

1 Data
2 NC

3 GND
4 VCC(+5V)
5 Clock
6 NC

PS/2 Keyboard

PS/2 Mouse

1

2

3 4 5

6

6CX Motherboard

11

CPU / Power / System Cooling FAN Power Connector

Pin No. Definition

1 GND
2 +12V
3 SENSE

1

ATX Power

Pin No. Definition

3,5,7,13,

15-17

GND

1,2,11 3.3V

4,6,19,20 VCC

10 +12V
12 -12V
18 -5V

8 Power Good
9 5V SB stand by+5V

14 PS-ON(Soft On/Off)

101120

1

Connectors

12

J8 : IR/CIR (Optional)

Pin No. Definition

1 VCC
2 NC
3 IRRX
4 GND

5 IRTX
6 NC
7 CIRRX
8 VCC

9 NC

10 NC

1

5

6 10

FLOPPY Port

RED LINE

6CX Motherboard

13

IDE1(Primary) , IDE2 (Secondary) Port

IDE 2

IDE 1

RED LINE

SPDIF : (The SPDIF output is capable of providing digital audio to
external speakers or compressed AC3 data to an external Dobly digital
decoder.)(Optional)

PIN No. Definition

1 VCC
2 SPDIF OUT

3 GND

1

Connectors

14

AUX_IN

Pin No. Definition

1 AUX-L
2 GND
3 GND

4 AUX-R

1

CD IN

1

Pin No. Definition

1 CD-L
2 GND

3 GND
4 CD-R

6CX Motherboard

15

TEL : The connector is for Modem with internal voice connector.

Pin No. Definition

1 Signal-In
2 GND

3 GND
4 Signal-Out

1

Wake On LAN

Pin No. Definition

1 +5V SB
2 GND

3 Signal

1

Connectors

16

Ring Power On

Pin No. Definition

1 Signal
2 GND

1

CN9 (Front): USB Port (Optional)

Pin No. Definition

1 VCC
2 USB D0-

3 USB D0+
4 GND
5 VCC
6 USB D1­7 USB D1+
8 GND

1 4 8

5

6CX Motherboard

17

JP31: External SMBUS Device Connector

Pin No. Definition

1 SMB CLK
2 NC

3 GND
4 SMB DATA
5 +5V

1

JP2: STR LED Connector

STR LED Connector
External.

+

RAM Indicator

LED1

JP2

1

Panel and Definition

18

Panel and Jumper Definition

J9: Panel Jumper

RE

GN

GD PW

P+ P− P−

S P K

HD

1

1

1

1

1

GN (Green Switch) Open: Normal Operation

Close: Entering Green Mode

GD (Green LED) Pin 1: LED anode(+)

Pin 2: LED cathode(−)

HD (IDE Hard Disk Active
LED)

Pin 1: LED anode(+)
Pin 2: LED cathode(−)

SPKR (Speaker Connector) Pin 1: VCC(+)

Pin 2- Pin 3: NC
Pin 4: Data(−)

RE (Reset Switch) Open: Normal Operation

Close: Reset Hardware System

P+P−P−(Power LED) Pin 1: LED anode(+)

Pin 2: LED cathode(−)
Pin 3: LED cathode(−)

PW (Soft Power Connec tor) Open: Normal Operation

Close: Power On/Off