Gigabyte 6CX7 Series, 6CX7L, 6CX7-1 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 com pliance 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: Feb. 29, 2000

Eric Lu

GA- 6CX7

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-6CX7

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, scientific 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: Feb. 29, 2000 Name : Rex Lin

6CX7 Series

100/133 MHz Pentium II/!!!

Socket 370 Processor Motherboard

USER'S MANUAL

Socket 370 Processor Motherboard

REV. 1.2 First Edition

R-12-01-000504

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) Four Speaker & SPDIF Four Speaker & SPDIF introduction

8) BIOS Setup

Instructions on setting up the BIOS
software

9) Appendix

General reference

Table Of Contents

Revision History P.1
Item Checklist P.2
Summary of Features P.3
6CX7 Series Motherboard Layout P.5
Page Index for CPU Speed Setup/Connectors/Panel and Jumper Definition P.6
Performance List P.30
Block Diagram P.31
Suspend to RAM Installation P.32
Dual BIOS Introduction (Optional) P.38
Four Speaker & SPDIF Introduction (Optional) P.45
Memory Installation P.50
Page Index for BIOS Setup P.52
Appendix P.82

6CX7 Series Motherboard

1

Revision History

Revision Revision Note Date

1.0 Initial release of the 6CX7 Series motherboard user’s
manual.

Feb.2000

1.1 Initial release of the 6CX7 Series motherboard user’s
manual.

Mar.2000

1.1 Second release of the 6CX7 Series motherboard user’s
manual.

Mar.2000

1.2 Initial release of the 6CX7 Series motherboard user’s
manual.

May.2000

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.

May. 4, 2000 Taipei, Taiwan, R.O.C

Item Checklist

2

Item Checklist

þThe 6CX7 Series Motherboard
þCable for IDE / Floppy device
þCD (IUCD) for motherboard utilities

oInternal COM B Cable (Optional)
oInternal USB Cable (Optional)
oCable for SCSI device

þ6CX7 Series User’s Manual
þCRIMM Module

6CX7 Series Motherboard

3

Summary Of Features

Form factor Ÿ 30.5 cm x 20 cm ATX Size form factor, 4 layers PCB.
Motherboard Ÿ 6CX7 series includes 6CX7L, 6CX7, 6CX7-1

CPU

Ÿ 100/133 MHz Pentium



II/!!! Socket 370 Processor

Intel Pentium



!!! 100/133MHz FSB, Coppermine core FC-PGA

Ÿ 2nd cache in CPU (Depend on CPU)

Chipset Ÿ 82820 HOST / AGP / RDRAM Controller

Ÿ 82801AA(ICH) I/O Controller Hub

Clock Generator Ÿ Supports 100 / 133MHz

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

clocks (reserved)
Memory Ÿ 2 184-pin RIMM Sockets
I/O Control Ÿ Winbond W83627HF
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 (Note: If both of Creative

CT5800 and Intel 82559 chipsets are on board, you

have only 4 32-bit master PCI slots at PCI1~PCI4,

PCI5 will be slave PCI slot)
On-Board IDE

Ÿ An IDE controller on the Intel



82801AA (ICH) PCI

chipset provides IDE HDD/ CD-ROM with PIO, Bus

Master (Ultra DMA33/ATA66) 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 EPP/ECP mode
Ÿ 2 Serial Ports (COM A & COM B)
Ÿ 2 USB ports (Front USB is optional for NEC)

Ÿ 1 IrDA connector for IR/CIR (Optional)

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

Ÿ CPU / Power / System 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

To be continued…

6CX7 Series Motherboard Layout

4

BIOS

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

On-Board LAN

Ÿ Intel



GD 82559(Optional for 6CX7L)

Ÿ Alert On LAN*2 ASIC (Optional)

On-Board Sound Ÿ Creative CT5880 sound (Optional for 6CX7)

Ÿ AC’97 CODEC
Ÿ Line In/Line Out/Mic In/AUX In/CD In/TEL/Game Port
Ÿ SPDIF/Four Speaker (Optional for 6CX7)

Additional Features Ÿ Internal/External Modem Wake up

Ÿ STR (Suspend-To-RAM)
Ÿ Wake On LAN
Ÿ PS/2 Keyboard Password Wake up
Ÿ System after AC back

Ÿ Poly fuse for keyboard, USB, Game port over- current

protection

Ÿ PS/2 Mouse Power On
Ÿ USB KB/MS Wake Up from S3

6CX7 Series Motherboard

5

6CX7 Series Motherboard Layout

6CX7

ICH

82801

MCH

82820

Game & Audio

COM B COM A

LPT

PS/2

BZ1

IDE1

FLOPPY

IDE2

AMR

PCI1

AGP

PCI 2

PCI 3

PCI4

PCI 5

Backup

BIOS

Main
BIOS

JP14

PGA 370

CPU

RIMM 1

USB

LAN

RIMM 2

Creative

CT5880

AOL*2

ASIC

SW1

BAT1

JP16

JP3

JP1

J1

JP18

JP15

J15

J7

J6

J8

J17

ATX Power

JP6

JP5

JP11

Intel

82559

AC’97

JP24

JP20

J2

JP17

J10

JP4

JP9

JP10

J11

J12

J18

J14

JP21

JP27

JP28

CN9

J16

JP8

LED1

JP29

6CX7 Series Motherboard Layout

6

$
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
COM A / COM B / LPT Port P.9
USB & LAN Connector (LAN is optional) P.10
PS/2 Keyboard & PS/2 Mouse Connector P.10
J1 (CPU Fan) P.11
J17 (Power Fan) P.11
J16 (System Fan) P.12
ATX Power P.12
IR/CIR (Optional) P.13
Floppy Port P.13
IDE 1(Primary)/ IDE 2(Secondary) Port P.14
J8 (AUX_IN) P.14
J6 (CD Audio Line In) P.15

J7 (TEL) P.15
J2 (Wake On LAN) P.16
J10 (Ring Power On) P.16
J15 (External SMBUS Device Connector) P.17
JP15 (STR LED Connector) [Optional] & LED1 (RIMM LED) P.17
CN9 (FP USB)[For NEC] [Optional] P.18
J12 (Front Panel Jumper)[For NEC] P.18
J18 (AOL II Connector) [For NEC] [Optional] P.19
Panel and Jumper Definition P.20
J11 (2x11 Pins Jumper) P.20
JP16 (PS/2 Keyboard Power On) P.21
JP3 (Back USB device Wake Up Selection)[Optional] P.21
JP4 (Clear CMOS Function) [Optional] P.22
JP5 (Safe mode / Recovery / Normal) P.22
JP6 (Timeout Reboot Function) [Optional] P.23
JP11 (AMR Select)[Optional] P.23
JP17 (Case Open) P.24
JP20 (Onboard Sound Function Selection) P.24
JP21 (Front USB device Wake Up Selection)[Optional] P.25
JP27/JP28 (USB Port Selection) P.25

6CX7 Series Motherboard

7

JP9 (Top Block Lock) [Optional] P.26
JP10 (FWH Write Protection) [Optional] P.26
JP14 (Internal Buzzer Connector) [Optional] P.27
JP18 (STR Enable) P.27
JP29 (Over Voltage CPU Speed Up)[Optional] P.28
JP1 (Cyrix CPU Turbo Function) [Optional] P.28
JP24 (Onboard LAN Function) [Optional] P.29
BAT1 (Battery) P.29

CPU Speed Setup

8

CPU Speed Setup

The CPU bus freq uency can be switched at 100MHz and 133MHz by adjusting JP8 & SW 1.
The CPU ratio selection is control by BIOS.

JP8 / SW1 Select the CPU Speed at 100MHz and 133MHz.

AGPCLK 66.6 73.3 80 66.6 70 75 66.6

CPUCLK 100 110 120 133 140 150 100/133/Auto

JP8 OFF OFF OFF OFF OFF OFF ON

1 O O O X X X X
2 O X X O X X O

3 X O X X O X X
4 O O X O X X O

(O: ON / X: OFF)

SW1

ON

JP8

1

100MHz

JP8

1

133MHz

JP8
1

100/133/Auto

SW1

ON

SW1

ON

1 2 3

4

1 2 3

4

1 2 3

4

6CX7 Series Motherboard

9

Connectors

Game & Audio Port

MIC In

Game

Port

Line In

Line Out 1

Line Out 1: Line Out or SPDIF (The SPDIF output is
capable of providing digital audio to external speakers
or compressed AC3 data to an external Dolby digital
decoder). In general, Line Out 1 is normally Line Out,
when it output digital signal, it will be change to SPDIF
Out automatically (see page 47 for more information).
Line In: In general, Line In is normally Line In. When
you select “Four Speaker” in Creative application
(see page 45 for more information), Line In will be
change to Line Out 2, then you can plug 2 pairs stereo
speaker into Line Out 1 and Line In simultaneously.

COM A / COM B / LPT Port

COM A

LPT Port

COM B

Connectors

10

USB & LAN Connector (LAN is optional)

Pin No. Definition

1 USB V0
2 USB D0­3 USB D0+
4 GND
5 USB V1

6 USB D1­7 USB D1+
8 GND

2

1

1 – Green LED

(LAN Link LED)

2 – Yellow LED

(LAN Active LED)

1 2 3 4

5
6

7

8

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

6CX7 Series Motherboard

11

J1: CPU Fan

Pin No. Definition

1 GND
2 +12V
3 SENSE

1

J17: Power Fan

Pin No. Definition

1 GND
2 +12V
3 SENSE

Connectors

12

J16: System Fan

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)

10

11

20

1

6CX7 Series Motherboard

13

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

6

1

10

5

Floppy Port

Red Line

Connectors

14

IDE1 (Primary), IDE2 (Secondary) Port

IDE 2

IDE 1

Red Line

J8: AUX_IN

Pin No. Definition

1 AUX-L
2 GND
3 GND
4 AUX-R

1

6CX7 Series Motherboard

15

J6: CD Audio Line In

1

Pin No. Definition

1 CD-L
2 GND
3 GND
4 CD-R

J7: TEL: The connector is for Modem with internal voice connector

Pin No. Definition

1 Signal-In
2 GND

3 GND
4 Signal-Out

1

Connectors

16

J2: Wake On LAN

Pin No. Definition

1 +5V SB
2 GND
3 Signal

1

J10: Ring Power On

Pin No. Definition

1 Signal
2 GND

1

6CX7 Series Motherboard

17

J15: External SMBUS Device Connector

Pin No. Definition

1 SMB CLK
2 NC
3 GND
4 SMB DATA
5 +5V

1

JP15: STR LED Connector (Optional) & LED1: RIMM LED

STR LED Connector External

+

RIMM LED

1

Connectors

18

CN9: FP USB (For NEC)[Optional]

Pin No. Definition

1, 4,5,10 NC

2 Power

3, 7, 9 GND

6 USB D1+
8 USB D1-

1

9

2

10

J12: Front Panel Jumper (For NEC)

Pin No. Definition

1 HD LED+
2 PWR LED+
3 HD LED­4 GN LED+/STR LED+

5,13, 8, 12 GND

6 PW
7 RST

9, 16 VCC

10 GN
11 IRRX

14, 17, 18 NC

15 IRTX

2 18

1 17

6CX7 Series Motherboard

19

J18: AOL II Connector (For NEC)[Optional]

Pin No. Definition

1 SMB CLK
2 SMB DATA

3,8,13 NC

4 ICH-SCL
5 ICH-SDA

6,15,17 GND

7 PW

9 THRMO­10 GPI10
11 COPEN
12 3VSB
14 RSMRST­16 RESET
18 PWROK

2 18

1 17

Panel and Jumper Definition

20

Panel And Jumper Definition

J11: For 2x11 Pins 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/STR LED) Pin 1: GN LED anode(+)/STR LED anode(+)

Pin 2: GN LED cathode(−)/STR LED cathode(−)

HD (IDE Hard Disk Active LED) Pin 1: LED anode(+)

Pin 2: LED cathode(−)

SPK (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 Connector) Open: Normal Operation

Close: Power On/Off

6CX7 Series Motherboard

21

JP16: PS/2 Keyboard Power On

Pin No. Definition

1-2 close PS/2 Keyboard Power on

Enabled

2-3 close PS/2 Keyboard Power on

Disabled (Default)

1

JP3: Back USB device Wake up Selection (Optional)
(USB Connector à CN1)

1

Pin No. Definition

1 -2 close

Enabled Back USB Device
Wake up

2 -3 close

Disabled Back USB Device
Wake up (Default)

(If you want to use “USB KB/MS Wakeup From S3” function, you
have to set the BIOS setting “USB KB/MS Wakeup From S3”
enabled, and the jumper “JP3&JP21” enabled).

*(Power on the computer and as soon as memory counting
starts, press <Del>. You will enter BIOS Setup. Select the

item “POWER MANAGEMENT SETUP”, then select “USB
KB/MS Wakeup From S3: Enabled”. Remember to save

the setting by pressing "ESC" and choose the “SAVE & EXIT
SETUP” option.)

CN1

Panel and Jumper Definition

22

JP4: Clear CMOS Function (Optional)

Pin No. Definition
1-2 close Clear CMOS
2-3 close Normal (Default)

1

JP5: Safe mode / Recovery / Normal

Pin No. Definition

1-2close Normal (Default)
2-3close Safe mode

1-2-3open Recovery

1

6CX7 Series Motherboard

23

JP6: Timeout Reboot Function (Optional)

1

Pin No. Definition

Open Timeout Reboot
Close No Reboot on Timeout

JP11: AMR Select (Optional)

Pin No. Definition

1-2close AMR Secondary
2-3close

AMR Primary
AC’97 Disabled (Default)
(Disabled Onboard CODEC)

1