Gigabyte 6CX7 Series 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.
DECLARATIONOFCONFORMITY
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: [phone]/ [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 EN60555-2by 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 EN60555-3by household appliances and similar
broadcast receivers and associated electrical equipment “Voltage fluctuations”
equipment
EN 55014 Limits and methods of measurement EN 50081-1Generic emission standard Part 1:
of radio disturbance characteristics of Residual, commercial and light industry
household electrical appliances,
portable tools and similar electrical EN 50082-1Generic immunity standard Part 1:
apparatus Residual, commercial and light industry
EN 55015 Limits and methods of measurement EN 55081-2Generic emission standard Part 2:
of radio disturbance characteristics of Industrial environment
fluorescent lamps and luminaries
EN 55020 Immunity from radio interference of EN 55082-2Generic 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 50091-1General and Safety requirements for
electrical appliances uninterruptible power systems (UPS)
Manufacturer/Importer
Signature : RexLin
(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 Ÿ30.5 cm x 20 cm ATX Size form factor, 4 layers PCB.
Motherboard Ÿ6CX7 series includes 6CX7L, 6CX7, 6CX7-1
CPU Ÿ100/133 MHz PentiumII/!!! Socket 370 Processor
Intel Pentium!!! 100/133MHz FSB, Coppermine core FC-PGA
Ÿ2nd cache in CPU (Depend on CPU)
Chipset Ÿ82820 HOST / AGP / RDRAM Controller
Ÿ82801AA(ICH) I/O Controller Hub
Clock Generator ŸSupports 100 / 133MHz
Ÿ105/110/117/120/125/127/135/137/140/145/150 MHz
clocks(reserved)
Memory Ÿ2 184-pin RIMM Sockets
I/O Control ŸWinbond W83627HF
Slots Ÿ1 AMR (Audio Modem Riser) slot
Ÿ1Universal AGPslot
(1X / 2X / 4X 1.5V/3.3V device support)
Ÿ5 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 ŸAn IDE controller on the Intel82801AA (ICH) PCI
chipset provides IDE HDD/ CD-ROM with PIO, Bus
Master (Ultra DMA33/ATA66) operation modes
ŸCan connect up to four IDE devices
On-Board
Peripherals Ÿ1 Floppy port supports 2 FDD with 360K, 720K, 1.2M, 1.44M and 2.88M bytes
Ÿ1 Parallel ports supports EPP/ECP mode
Ÿ2 Serial Ports (COM A & COM B)
Ÿ2 USB ports (Front USB is optional for NEC)
Ÿ1 IrDA connector for IR/CIR (Optional)
HardwareMonitor ŸCPU/Power Supply/System Fan Revolution detect
ŸCPU / Power / System Fan Control
ŸSystem Voltage Detect
ŸCPU Overheat Warning
ŸChassis Intrusion Detect
ŸDisplay Actual Current Voltage
PS/2 Connector ŸPS/2Keyboard interface and PS/2Mouse interface
To be continued…

6CX7 Series Motherboard Layout
4
BIOS ŸLicensed AMI BIOS, 4M bit FLASH ROM
ŸSupport Dual BIOS (Optional)
On-Board LAN ŸIntelGD 82559(Optional for 6CX7L)
ŸAlert On LAN*2 ASIC (Optional)
On-Board Sound ŸCreative CT5880 sound (Optional for 6CX7)
ŸAC’97 CODEC
ŸLine In/Line Out/Mic In/AUX In/CD In/TEL/Game Port
ŸSPDIF/Four Speaker (Optional for 6CX7)
Additional Features ŸInternal/External Modem Wake up
ŸSTR (Suspend-To-RAM)
ŸWake On LAN
ŸPS/2 Keyboard Password Wake up
ŸSystem after AC back
ŸPolyfuse for keyboard, USB, Game port over-current
protection
ŸPS/2 Mouse Power On
ŸUSB KB/MS Wake Up from S3

6CX7 Series Motherboard
5
6CX7 Series Motherboard Layout
6CX7
ICH
82801
MCH
82820
Game & Audio
COM BCOM 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
ATXPower
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& AudioPort 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/2Keyboard 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 frequency 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
1OOO XXXX
2OXXO XXO
3XOXXO XX
4OOXOXXO
(O: ON / X: OFF)
SW1
ON
JP8
1
100MHz
JP8
1
133MHz
JP8
1
100/133/Auto
SW1
ON
SW1
ON
1234
1234 1234

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
1USB V0
2USB D0-
3USB D0+
4GND
5USB V1
6USB D1-
7USB D1+
8GND
2
1
1 –Green LED
(LAN Link LED)
2 –Yellow LED
(LAN Active LED)
12
34
5
67
8
PS/2 Keyboard & PS/2 Mouse Connector
PS/2 Mouse/ Keyboard
Pin No. Definition
1Data
2NC
3GND
4VCC(+5V)
5Clock
6NC
PS/2 Keyboard
PS/2 Mouse
1
2
3
4
5
6

6CX7 Series Motherboard
11
J1: CPU Fan
Pin No. Definition
1GND
2+12V
3SENSE
1
J17: Power Fan
Pin No. Definition
1GND
2+12V
3SENSE

Connectors
12
J16: System Fan
Pin No. Definition
1GND
2+12V
3SENSE
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
8Power Good
95V SB stand by+5V
14 PS-ON(Soft On/Off)
10
11
20
1

6CX7 Series Motherboard
13
IR/CIR (Optional)
Pin No.
Definition
1VCC
2NC
3IRRX
4GND
5IRTX
6NC
7CIRRX
8VCC
9NC
10 NC
6
1
10
5
Floppy Port
Red Line