ENPC/ENlight EP-KE21 User Manual

EP-KE21

Motherboard of

Pentium II with MMX



User’s Manual

Order Number 41010017

User Manual Rev 1.0

Related Motherboard: P.C.B. Rev 1.0

Date: MAY 1998

TABLE OF CONTENTS

Chapter 1 INSDUCTION ................................................................1

1-1 About this Manual……......................................................................1

1-2 Item Checklist…………....................................................................2

1-3 Specifications………….....................................................................3

Chapter 2 INSTALLATION...........................................................6

2-1 Motherboard Description...................................................................6

2-2 Motherboard Layout……..................................................................7

2-3 System Memories……….............................................................…..7

2-4 Central Processing Unit (CPU)........................................................10

2-5 Expansion Cards & Slots.................................................................12

2-6 External Connectors…….................................................................13

2-7 Hardware Jumper Setup...................................................................25

Chapter 3 SPECIAL FEATURE..................................................28

3-1 Security Keyboard and Mouse Power On........................................28

3-2 Modem Ring / LAN Power On ……...............................................28

3-3 Hardware Monitorning ……............................................................28

Chapter 4 APPENDIX ..................................................................29

A What is AGP (Accelerated Graphics Port) ? .................................29

B ISO 9002 QA Certificate ...............................................................30

EP-KL11/KE11 User's Manual

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1-1 About this Manual

This manual is arranged to help you set up and run this Motherboard
of Pentium II with MMX as soon as possible.

The information is presented in the following two chapters:

Chapter 1 INTRODUCTION

Presents what you should receive with your
motherboard, the features and specifications
of the product. This chapter enclosed with a
diagram showing the layout of the
motherboard.

Chapter 2 INSTALLATION

Motherboard Installation includes detailed
information on how to install and configure
the motherboard.

Chapter 3 SPECIAL FEATURE

Describes this motherboard special feature of
"Security Keyboard and Mouse Power On",
"Modem Ring/LAN Wake-Up", "Hardware
Monitoring".

Chapter 4 APPENDIX

This appendix describes what the AGP is and
presents the ISO9002 certificate.

EP-KE21 User's Manual

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Chapter 1 INTRODUCTION

1-2 Item Checklist

This product comes with the following components:

 Motherboard x 1

 40-pin IDE Connector Flat Cable x 1

 34-pin Floppy Disk Drive Flat Cable x 1

 User’s Manual x 1

 CPU Retention Mechanism Kit x 1

 Audio Software Drivers Diskette x 1

 Winbond W83781 Hardware Monitoring

Detection Drivers Diskette x 2

 Bus Master IDE/Ultra DMA-33 Drivers Diskette x 1 (Option)

 IrDA Module x 1 (Option)

 LDCM Diskette x 1 (Option)

Option : Components will be included upon customer ordering

instructions per Proforma Invoice & additional
external procurement cost will be included.

EP-KE21 User's Manual

1

Chapter 1 INTRODUCTION

1-3 Specifications

Processor: Slot 1 support Intel Pentium II with MMX

Series CPU’s, CPU Clock Select support for
66, 75, 83 MHz CPU Bus speed
configuration.

Chipset: Intel 82443EX System Controller

Intel 82371EB PCI/ISA IDE Accelerator

3D Audio High Performance Chips

Ultra I/O Chip with security Keyboard/Mouse
Power On, Modem/LAN Wake-Up

BIOS Award BIOS With Flash ROM, support PnP,

PCI 2.1, CD-ROM, ATAPI, LS-120, and any
IDE Device Bootable, Virus Protection, DMI
Ready

System Memory: 2 x DIMMs Slots Support Mixed Memory

Technologies: Extended Data Output (EDO),
Synchronous DRAM (SDRAM)

Multi-I/O Onboard: 1 x FDD Port support up to 2.88MB

1 x Parallel Port (LPT) support ECP/EPP

2 x High Speed Serial (16C550 UART) Ports

2 x Universal Serial Bus (USB) Ports

1 x PS/2 Keyboard Port

1 x PS/2 Mouse Port

2 x IrDA Infrared Interfaces

EP-KE21 User's Manual

2

Chapter 1 INTRODUCTION

PCI Bus Master IDE: PCI Enhanced IDE Interface with 4 IDE

Devices

Support HDD Auto-Detect

Support up to PIO Mode 4, DMA Mode 2

Support Ultra DMA/33 mode

Fully compatible with PCI Local Bus
Specifications V2.1

I/O Connector: 2 x USB Ports, 1 x PS/2 Keyboard Port, 1 x

PS/2 Mouse Port, 1 x Parallel Port, 2 x Com
Port, 1 x MIDI/Game Port, 1 x Audio Line in
Port, 1 x Audio Line Out Port, 1 x Audio
Mic. In Port, 1 x CD-IN port

Expansion Slots: 1 x 16-bit ISA Slots with 100% ISA

Compatible Functions

3 x 32-bit PCI Slots supporting PCI BUS
Master Slots Conform with PCI
Specifications Version 2.1

1 x AGP Slot supported.

Options: 2 x Infrared (IrDA) Wireless Interface Kit

(Front & Rear)

Universal Serial Bus (USB) Connector Kit

W83781 Hardware Monitor Circuit Design
and CPU Temperature reading, LDCM for
system Voltage, System Temperature, Fan
Speed detected.

EP-KE21 User's Manual

3

Extended Features: Advanced Configuration and Power Interface

(ACPI) ready
CPU Temperature detect

Support System Power Monitor

Support Win95 Soft Power Off

Surround 3D Audio with LINE-IN, LINE­OUT, MIC-IN and MIDI/GAME port

Compliant with PC97

Support SM-Bus

Dimension: 244 mm x 200 mm

Form Factor: Micro ATX Form Factor

Chapter 2 INSTALLATION

2-1 Motherboard Description

The motherboard is designed with the Intel 82440EX PCI chipset
which is developed by Intel Corporation to fully support the

Pentium II Processor PCI/ISA system. The Intel 82440EX PCI chipset
provides increased integration and improved performance designs.
The chipset provides an integrated IDE controller with two high
performance IDE interfaces for up to four IDE devices (hard devices,
CD-ROM device, etc). The Super I/O controller provides the standard
PC I/O function: floppy interface, two 16Byte FIFO serial ports and
EPP/ECP capable parallel port.

Care must be taken when inserting memory modules, inserting CPU
or even plugging PCI card into associated slots to avoid damaging any
circuits or sockets on board. A cooling fan is strongly recommended.

The motherboard supports minimum of 8MB of system memory and a
maximum of 256 MB SDRAM.

The motherboard supports EDO (Extended Data Output), or SDRAM
(Synchronous DRAM). The motherboard provides two 168-pin
DIMM sockets.

The board also supports two onboard PCI IDE connectors, and
automatically detects the IDE hard disk type through the BIOS utility.
The system also supports Award Plug & Play BIOS for the ISA and
PCI cards.

Chapter 2 INSTALLATION

2-2 Motherboard Layout

PS/2 Mouse
PS/2 Keyboard

USB Port

COM 1

LPT

COM 2

Line-In
Line-out
Mic.-In

MIDI/Game
Port

Audio Chip

I/O Chip

Rear IR
Conn.

CD-In

SLOT 1

ATX PWR Conn.

440EX

HCLK SELECTOR

PCI SlotISA Slot

FAN

371EB

DIMM Socket

IDE Conn.

FDD

BIOS

AGP Slot

Ratio Selector

CMOS Clear

FAN 2

Front IR
Conn.

Front Panel Conn.

Chapter 2 INSTALLATION

2-3 System Memories

This motherboard only supports Dual Inline Memory Modules
(DIMM’S), The Dual Inline Memory Module (DIMM) must be 3.3
Volt Unbuffered Synchronous DRAM (SDRAM) of either 8, 16,
32, 64, or 128MB to form a memory size between 8MB to 256MB.

Note : Install memory in any or all of the banks in any combination as

the following page :

Chapter 2 INSTALLATION

Item Bank Memory Module

1 DIMM 1 8~128MB
2 DIMM 1, 2 8~128MB

DIMM 2

DIMM 1

Chapter 2 INSTALLATION

2-4 Central Processing Unit (CPU)

The motherboard provides a SLOT 1 for Pentium II CPU. The CPU
should have a fan attached to it to prevent overheating. If your CPU
did not come with a fan, then purchase a fan before you turn on your
system.

NOTE 1 : You must set the CPU External Clock (BUS) Frequency

Selection” and “CPU to BUS Frequency Ratio” depending
on the CPU that you install.

2 : Without a fan, the CPU can overheat and cause

damage to both the CPU and the motherboard.

SLOT 1

Chapter 2 INSTALLATION

To install a CPU, locate the SLOT 1. Insert the CPU with the correct
orientation. you should have a CPU fan that will cover the face of the
CPU.

JP4 : (Use pin header )

CPU Host Clock Select

Note : The JP4 is CPU Speed Select Utilize Pin

Header, See The Page 25, 26 For Detailed
Description.

Chapter 2 INSTALLATION

2-5 Expansion Cards & Slots

Assigning DMA Channels for ISA Cards:

Some ISA cards, both Legacy and PnP may also need to use a DMA
(Direct Memory Access) channel. DMA assignments for this
motherboard are handled the same way as the IRQ assignment process
. You can select a DMA channel in the PCI and PnP configuration
section of the BIOS Setup utility.

This motherboard provides an AGP (Accelerated Graphics Port) slot
to support a new generation of graphics cards with ultra-high memory
bandwidth. (Note : For the detail of AGP to see appendix)

NOTE: Choose “Legacy ISA” for those IRQ’s and DMA’s

you wish to reserve for Legacy (Non-PnP) ISA
expansion cards in “IRQ xx Used by ISA” and “DMA
x Used By ISA” of the PnP and PCI Setup in the
BIOS Software section, otherwise conflicts may
occur.

1 x AGP SLOT
3 x PCI SLOTS
1 x ISA SLOTS

Chapter 2 INSTALLATION

2-6 External Connectors

1. Keyboard Connector and USB Port (K/B, 6-pin Mini DIN

connector and USB, standard stack connector)

This K/B connection is for a PS/2 Keyboard connector, which is
on lower stack connector.

2. PS/2 Mouse Connector (PS/2, 6-pin Mini DIN Connector)

This Mouse connection is for a PS/2 Mouse connector, which is
on upper stack connector.

If you are not using a PS/2 mouse, you must disable the PS/2 port
in the BIOS Setup. <default is enable>

Note : The USB Port Support Standard USB Spec.

PS/2 Mouse
Connector

K/B : Keyboard

Port

USB Port

Chapter 2 INSTALLATION

3. Parallel Port (CN7, 25-pin D-SUB connector)

You can enable the parallel port (LPT1) and choose the IRQ
through BIOS Setup on “Onboard Parallel Port”.

4. Serial Ports (COM1, COM2, 9-pin D-SUB connector).

The two serial (COM1 & COM2) ports can be used for pointing
devices or other serial devices. See “Onboard Serial Port” in
Chipset Features Setup of the BIOS Software.

Parallel Port

CN1:COM1

CN2:COM2

Chapter 2 INSTALLATION

5. ATX Power Supply Connectors (ATXPWR1:20-pin block)

ATX is a standard ATX-type power connector. (The ATX
power connector can only be inserted the correct way.)

NOTE:

To prevent electrical spikes, make sure that the power
supply is not connected to an outlet when making or removing
connections. Power supplies contain power reserves that can
damage electrical components.

Key holder

ATX Power

Connector

Chapter 2 INSTALLATION

6. Floppy Drive Connector (FDD1, 34-pin Pin header)

This connector supports the provided floppy disk drive ribbon
cable. After connecting the single end to the board, connect
the plugs on the other end to one or two floppy drives. The
motherboard provides a standard floppy disk (FDD) connector
that supports 360K, 720K, 1.2M, 1.44M and 2.88M floppy
disk types. You can attach a floppy disk cable directly to this
connector.

EP-KE21 User’s Manual

FDD Connector

15

16

Chapter 2 INSTALLATION

7. Primary/Secondary IDE connectors (IDE1 & IDE2: Two 40-

pin Pin header)

These connectors support the provided IDE hard disk ribbon
cable. After connecting the single end to the board, connect
the two plugs at the other end to your hard disk(s). If you
install two hard disks, you must configure the second drive to
Slave mode by setting its jumper accordingly. Please refer to
the documentation of your hard disk for the jumper settings.

8. CD-IN Connector (JP1: 4-pin Connector)

This connector supports CD-ROM Audio signal input from
CD-ROM driver.

EP-KE21 User’s Manual

IDE 1

IDE 2

CD-IN Connector

Pin # :

1. L-IN

2. GND

3. R-IN

4. GND

Chapter 2 INSTALLATION

9. a. IDE Activity LED (J1, Pin 2, 4 )

This connector connects to the IDE (hard disk) activity
indicator light on the system cabinet.

EP-KE21 User’s Manual

J1, HDD LED

Pin 17 : +
Pin 19 : G

17

18

Chapter 2 INSTALLATION

b. System Power LED (J1, Pin 9, 11, 13)

This 3-pin connector lights the system power LED when
the motherboard has power.

c. Turbo LED (J1, Pin 13, 15)

EP-KE21 User’s Manual

J1, System Power LED

Pin 13 : +
Pin 15 : G

- + +

If the cabinet provides the turbo LED cable,
connect the cable to this two pin connector to
turn on the LED on the front panel.

Chapter 2 INSTALLATION

d. CMOS Clear ( JP3 )

The CMOS RAM is powered by the onboard button cell
battery.

You can follow process to clear the RTC data :

(a) Turn-off power of computer
(b) To put the pin cap locate at “Clear” for a while
(c) Reput the pin cap locate at “Normal”, and turn-

on computer power

(d) Hold down <Del> key during the system booting

and enter BIOS setup screen to re-keyin the users
setting.

EP-KE21 User’s Manual

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Clear

Normal

JP3 : Clear CMOS

19

Normal : Pin 1,2 (Default)
Clear : Pin 2,3

20

Chapter 2 INSTALLATION

e. ATX Power Switch Lead ( J1, Pin 9, 11)

The system power is controlled by a push-switch,
connected to this lead. Pushing the button once will turn
on the power and pushing again will turn off the power.
The system power LED shows that status of the system’s
power. This connection does not have a function when a
standard power supply is used.

NOTE : If the power to the ATX power supply is interrupted

while the motherboard is on, standby power will
remember that the motherboard should be on and
boot the computer when power is reapplied to the
ATX power supply.

EP-KE21 User’s Manual

J1, Pin 9, 11:

ATX Power Switch On/ Off
Lead

Chapter 2 INSTALLATION

f. Reset Switch Lead (J1, Pin 1, 3)

This 2-pin connector connects to the case-mounted reset
switch for rebooting your computer without having to turn
off your power switch. This is a preferred method of
rebooting in order to prolong the life of the system’s power
supply.

g. Keyboard Lock Switch Lead

(J1, Pin 4, 6)

This 2-pin connector connects to the case-mounted
keyboard lock switch for locking the keyboard.

EP-KE21 User’s Manual

J1, Pin 1, 3:
Reset Switch Lead

J1, Pin 4, 6 :

KEYLOCK

1

21

1

2

22

Chapter 2 INSTALLATION

10. Speaker Connector (J1, Pin 14, 16, 18, 20)

This 4-pin connector connects to the case-mounted speaker.

11. CPU Cooling Fan Connector (FAN1&FAN2 : support fan

detect)

This connector supports a CPU cooling fan of 500 mA
(6WATT, +12V) or less. Orient the fan so that the heat sink fins
allow airflow to go across the onboard heat sink(s). Depending
on the fan manufacturer, the wiring and plug may be different.
The red wire should be positive, while the black should be
ground. Connect the fan’s plug to the board taking into
consideration the polarity of the connector.

EP-KE21 User’s Manual

J1, Pin 14, 16, 18, 20 :
Speaker Connector

FAN 2

FAN 1

Pin 1 : GND
Pin 2 : +12V
Pin 3 : Detect

Chapter 2 INSTALLATION

NOTE: The CPU and/or motherboard will overheat if there

is no airflow across the CPU. Damage may occur to
the motherboard and/or the CPU fan if these pins are
incorrectly used. These are not jumpers, do not place
jumper caps over these pins.

12. IrDA Compliant Infrared Module Connector (IR1, IR2)

This connector supports the optional wireless transmitting and
receiving infrared module. This module mounts to a small
opening on system cases that support this feature. You must
also configure UART 2. Use Infrared in Chipset Features Setup
to select whether UART 2 is directed for use with COM2 or
IrDA. When IrDA is selected in BIOS, COM2 will be disabled.
Use the five pins as shown and connect a wire cable from the
module to the motherboard to the pin definitions.

EP-KE21 User’s Manual

IR1 “FRONT IR”

2. FIRRX

1. +5V

IR2 “REAR IR”

23

Pin # :

5. IRTX

4. GND

3. IRRX

24

Chapter 2 INSTALLATION

2-7 Hardware Jumper Setup

8. External HCLK Frequency Select

FS0 FS1 FS2

68.5MHz OFF OFF ON

75 MHz OFF ON OFF

83.3MHz ON OFF ON

EP-KE21 User’s Manual

JP4 : HCLK Select

Chapter 2 INSTALLATION

9. Frequency Ratio Select Table (JP2)

RATIO

JP2

1 2 3 4
X3.5 ON OFF OFF ON
X4.0 OFF ON ON ON
X4.5 OFF ON OFF ON
X5.0 OFF OFF ON ON
X5.5 OFF OFF OFF ON

NOTE :

1. On : Install Pin Cap,

2. Off : Uninstall Pin Cap

EP-KE21 User’s Manual

JP2 : Ratio Select

25

26

Chapter 2 INSTALLATION

10. Audio Jack & Game Port

This jack and MIDI/Game port is stack connector to support
LINE-IN, LINE-OUT, MIC-IN and 15-pin D-SUB Connector
for joy stick or MIDI player

EP-KE21 User’s Manual

LINE-IN

LINE-OUT

MIC-IN

MIDI/Game Port

Connector

Chapter 3 SPECIAL FEATURE

3-1. Security Keyboard and Mouse Power On

The Winbond W83977TF-AW is a new IC whose keyboard and
mouse controller (KBC) is enhanced with “Programmable OnNow /
Security Wake-Up” feature. It provides the function that users can
wake up a shutdown PC system simply by a keystroke or a click of
mouse button. This is a perfect implementation of OnNow. Users are
able to program a combination of 1-5 characters as the password. By
choosing the "INTEGRATED PERIPHERALS" option from the
CMOS SETUP UTILITY Menu to enable or disable the following
features :

1, Password. 2, Hot kEY. 3, BUTTON ONLY

4, Mouse Left. 5, Mouse Right.

3-2. Modem Ring / LAN Wake-Up

This feature is able to wake-up the system from Modem or LAN
when the PC system is suspended to memory through ACPI but not
powered off. You have to choose "POWER MANAGEMENT
SETUP" option from the CMOS SETUP UTILITY Menu to enable
or disable this feature.

3-3. Hardware Monitoring

This motherboard provided a hardware status monitoring IC for
personal computers to monitor several critical hardware parameters of
the system, including power supply voltages, fan speeds, and
temperatures. The users can read all the monitored parameters of
system from time to time. The application software could be the
popular Intel LDCM (LANDesk Client Management) or Winbond's
application software. Also the users can setup the upper and lower
limits of these monitored parameters and to activate two
programmable and maskable interrupts. An optional beep tone could
be used as warning signal when the monitored parameters are out of
the preset ranges.

Chapter 4 APPENDIX

A, What is AGP (Accelerated Graphics Port) ?

The Accelerated Graphics Port (AGP) is a new port on the
Host–To–PCI bridge device that supports an AGP port. The main
purpose of the AGP port is to provide fast access to system
memory.

The AGP port can be used either as fast PCI port (32-bits at
66MHz VS. 32-bits at 33MHz) or as an AGP port which supports
2x data rate, a read queue, and side band addressing. When the 2x
date is used the port can transmit data at 533MB/sec. (66.6  2



4). The read-queue can be used to pipline reads removing the
effects of the reads latency. Side band addressing can be used to
transmit the data address on a separate line in order to further speed
the transaction.

Chapter 3 SPECIAL FEATURE

B, ISO-9002 QA CERTIFICATE

Chapter 4 APPENDIX

100

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EP-KE21

User’s Manual