TriGem Nara-M User Manual

TriGem Computer Inc.
Research & Development Center.

TriGem Micro-ATX Motherboard (NARA-M)

Hardware Document

November 18, 2000

Revision 1.1

Format No: TGDFBD06-A

Page1/18

TriGem Computer Inc.
Research & Development Center.

Document Revision History

Released date Revision Description

May 16, 2000

July 18,2000
Nov 18,2000

Rev. 0.9 First prepared for this document.

This document describes the major specification of the NARA-M
motherboard and the functional feature to be extended by the customer.

The motherboard revision number is EVT1
Rev. 1.0 Mass Product
Rev. 1.1 - Updated CPU Specification

- Change the Chipset Mark for Vt82C694X(z)

- Changed the Clock gen. From ICworks W144H to ICS9248CF-98

Marketing Information

Address 1055 Shingil-Dong, Ansan, Kyunggi-Do, Korea
Telephone [phone](International Business Team)
Fax [phone]
Email [e-mail] (Dong Chun Chang)

Technical Support

Address 1055 Shingil-Dong, Ansan, Kyunggi-Do, Korea
Telephone [phone]
Fax [phone]
Email [e-mail] (Young Chel Park)

[e-mail] (Hyenki Baek)
[e-mail] (Chang Yu)

User ’s Notice

No part of this product, including the schematics and BIOS may be reproduced, transmitted, transcribed,
stored in a retrieval system, or translated into any language in any form by any means without the
express written permission of TriGem Computer Inc. except the document kept by the purchaser for
backup purposes.

© Copyright 2000 TriGem Computer Inc. All rights reserved

Format No: TGDFBD06-A

Page2/18

TriGem Computer Inc.
Research & Development Center.

I. Introduction

1. Generation Description ------------------------------------------------------------ 4

2. Function Block Diagram ------------------------------------------------------------ 6

II. System Overview

1. Major Units ----------------------------------------------------------------------------- 7

2. Upgradeability ------------------------------------------------------------------------- 8
2-1. Processor -------------------------------------------------------------------------- 8
2-2. Memory ----------------------------------------------------------------------------- 8
2-3. BIOS --------------------------------------------------------------------------------- 9
2-4. Expansion Slot -------------------------------------------------------------------- 9
2-5. Advanced Configuration and Power Interface (ACPI) ------------------- 10
2-6. Manufacturing Options ---------------------------------------------------------- 10

III. Jumper & Connector Description

Contents of Table

1. Motherboard Jumper Setting ------------------------------------------------------ 11
1-1. Selection for Processor CPU Clock ------------------------------------------ 11
1-2. Other functionality --------------------------------------------------------------- 11
1-3. On Board Audio device function ------------------------------------------------- 12
1-4. OEM/ODM selector -------------------------------------------------------------- 12

2.I/O Header Connector Description --------------------------------------------- 13
2-1.Motherboard Internal Connector --------------------------------------------- 13
2-2.Motherboard External I/O Port ------------------------------------------------ 16

Format No: TGDFBD06-A

Page3/18

TriGem Computer Inc.
Research & Development Center.

I. Introduction

The NARA-M Micro-ATX motherboard offers a time to market consumer and corporate desktop solution

featuring the Intel Pentium-III FC-PGA processor with 66/100/133MHz front side bus and the VIA VT82C694Z sets in
an Micro-ATX low profile motherboards.

The NARA-M motherboard was designed to be highly minimized system cost. In this effort, ATX gives the

greater space economy and more affordable systems. Integrating 4X AGP slot, as well as PCI audio solution with
AC97 Codec onto the motherboard eliminates the need for more expensive graphic and audio add-in cards. The end
result is a system platform with a primary component level of integration with translates into affordable solution for
entry level users.

1. General description

q Motherboard

• Small PCB size in the Micro ATX form factor (ATX V1.2 form factor)

• 228mm * 238mm * 1.6t (4 Layers)

q Processor

• Intel Pentium-III FC-PGA 500E up to 1GEB MHz processor support

q Main Chipset

• System Core (North bridge)

- VIA VT82C694Z

• PCI Super I/O Integrated Peripheral Controller (South Bridge)

- VIA VT82C686A

• Audio : SoundBlaster Pro Hardware and Direct Sound AC97 Audio at VT82C686A and

CS4297A Codec or CS4281 PCI Audio Controller and CS4297A Codec

• Super I/O : Integrated Super I/O Controller in VT82C686A

• DC-DC Converter : Semtech SC1164

• Clock : ICS 9248-98 (66MHz/100MHz/133MHz host clock support)

q Memory Configuration

• System Memory

- Four banks (2 DIMM) of 64-Bits Advanced Memory controller supporting PC100/PC133 SDRAM,

VCM SDRAM, and ESDRAM with max 2GB(512Mb DRAM technology)
(66/100, 100/66, 100/133, 133/100) mode with FSB

33 interface

- DRAM interface runs synchronous (66/66, 100/100, 133/133) mode and pseudo-synchronous

• Flash Memory : Programmable 2MB Flash memory

q I/O Feature

• Integrated standard I/O functions in the rear side

- One multi-mode parallel port

- Two FIFO serial ports

- PS/2 styles keyboard and mouse port

- Tow USB ports

- Three audio jack for Line input, Speaker output and MIC input

• Integrated extended I/O functions

- Two USB port (Header Connector type)

q UltraDMA-33 / 66 Master Mode PCI EIDE Controller

- Transfer rate up to 33MB/sec to cover PIO mode 4, multi-word DMA mode 2 drives, and Ultra DMA-

- Increased reliability using UltraDMA-66 transfer protocols

- Support ATAPI compliant devices including DVD devices

- Dual channel master mode PCI supporting four Enhanced IDE devices

q Audio Subsystem (Manufactory Option parts)

• Built in PCI Audio Controller in VIA VT82C686A and CS4297A Codec

- SoundBlaster Pro Hardware and Direct Sound Ready AC97 Digital Audio Controller

- Dual full-duplex Direct Sound channels between system memory and AC97 link

- PCI master interface with scatter / gather and bursting capability

Format No: TGDFBD06-A

Page4/18

TriGem Computer Inc.
Research & Development Center.

- 32 byte FIFO of each direct sound channel

- Standard v1.0 or v2.0 AC97 Codec interface for single or cascaded AC97 Codec

• Crystal CS4281 PCI audio controller and CS4297A Codec(Default)

- PCI version 2.1 bus master

- MPU-401 interface, FM synthesizer, and game port

- Full duplex operation

- PC 97 and PC 98 Compliance (and compliance with preliminary PC 99)

- Digital Docking Solution with AC 97 2.0 Codec

? Refer to PCI interrupt & master number routing map part at pages 10

q Graphic Subsystem

• Full Featured Accelerated Graphics Port (AGP) Controller

- Supports full AGP v2.0 capability for maximum bus utilization including 2x and 4x mode transfers

- Supports SideBand Addressing (SBA) mode (non-multiplexed address / data)

- Supports 266 MHz 4x mode for AD and SBA signaling

- Pipelined split-transaction long-burst transfers up to 1GB/sec

Format No: TGDFBD06-A

Page5/18

TriGem Computer Inc.

Intel Pentium-III

VIA

Super I/O Function

4 USB Ports

Joystick and

VIA

CS4297A

Research & Development Center.

II. System Overview

Cu-256K FC-PGA

DIMM Modules

Host Interface

1 AGP (2X or 4X) Slot

Primary IDE

Secondary IDE

Rear Port

K/B

Parallel Port

FDD

MOUSE

2 Serial Ports

VT82C694X(Z)

VT82C686A

Speaker MICLine In

3 PCI Slots

PCI Interface

CS4281

Codec

MIDI

Format No: TGDFBD06-A

(2 ports are Option)

Rear Port

Page6/18

TriGem Computer Inc.

2

4

5

Research & Development Center.

1. Major Units

1

3

13

12

6

1. Audio Power AMP : TPA1517

2. AC97 Codec : CS4297A

3. North bridge : VT82C694X(z)

4. PCI Sound : CS4281

5. South bridge : VT82C686A

6. Flash ROM : W29C020P-12

7. FDD Connector : FDD (34 Pins)

8. IDE Connector2 : Secondary IDE (40 Pins)

9. IDE Connector1 : Primary IDE (40 Pins)

10. Battery : CR2032

11. Clock generator : ICS9248-98

12. DC-DC Converter : SC1164

13. CPU Socket : Int el FC-PGA Pentium III processor

11

9
8

7

Format No: TGDFBD06-A

Page7/18

TriGem Computer Inc.
Research & Development Center.

2. Upgradeability

2-1. Processor

NARA-M motherboard provides the 370pin PGA370 socket that is not backward compatible with ZIF socket-7
processors The Processor’s VID pin automatically program the voltage regulator on the motherboard to the
required processor voltage. The motherboard supports processors that run internally at Variable speed clock.

q Supported Intel Pentium-III Processors (PGA-370 Socket Type)

• Intel : Cu-256K 500E MHz up to 1GEB MHz (FC-PGA Type)

? E: Processor with Advanced transfer code

2-2. Memory

The motherboard has two, dual inline memory module (DIMM), minimum 16MB to maximum 512MB memory
size. The BIOS can automatically detect the memory type, size, and speed through SMBUS interface between
the core chipset and DIMM module.

The motherboard supports the following memory features

B: 133 MHz system bus frequency

• 3.3V and unbuffered 168-pin DIMM

Voltage detection

3.3V Version 5V Version
Unbuffered detection

Unbuffered Buffered

• DRAM interface synchronous with host CPU (66/100/133 MHz) or AGP (66MHz) for most flexible

configuration.

• Supports FP, EDO, SDRAM, ESDRAM, and VCM SDRAM memory types

• Different DRAM types may be used in mixed combinations

• Different DRAM timing for each bank

• 4 banks up to 2 GB DRAMs at 100 / 133 MHz

Format No: TGDFBD06-A

Page8/18

TriGem Computer Inc.
Research & Development Center.

2-3 BIOS

The motherboard uses a TriGem-AMI BIOS, which is stored in flash memory and can be upgraded using a disk­based program. A new version of the BIOS can be upgraded from a diskette using the Flash Memory Update
utility.

q Flash memory organization

Address (Hex) Size Functional description
FFFFC000 - FFFFFFFF 16KB Boot block

FFFF8000 - FFFBFFFF 16KB NVRAM block
FFFC0000 - FFF7FFFF 224KB Main BIOS block

q On-board device management
The BIOS can manage the devices on the motherboard over the CMOS setup menu. However, the

corresponding jumper as described Jumper setting section later can disable the built-in Audio controller.

Device Description CMOS setup menu Default value
Internal Cache Processor Enable / Disable Enabled
PS/2 Mouse VIA VT82C686A Enable / Disable Enabled
USB Function VIA VT82C686A Enable / Disable Enabled
On board FDC VIA VT82C686A Auto / Enable / Disable Auto
On board serial VIA VT82C686A Auto / 3F8 / 2F8 / 3E8 / 2E8 Auto
On board parallel VIA VT82C686A Auto / Disable / 378 / 278 / 3BC Auto
On board IDE VIA VT82C686A Disable / Primary / Secondary / Both Both

2-4. Expansion Slot

The motherboard support PCI and AGP function. PCI functions are extended to the additional slot with three PCI,
and AGP function is designed in the motherboard with AGP graphics controller.

q PCI configuration space map

Bus number Device number Function number Device
00 00 00 Host/PCI Bridge(VIA VT82C694Z)

00 01 00 AGP Controller
00 07 00 PCI/ISA bridge (VT82C686A)
00 07 01 IDE bus master (VT82C686A)
00 07 02 USB Controller 1(VT82C686A)
00 07 03 USB Controller 2(VT82C686A)
00 07 04 Power management (VT82C686A)
00 0D 00 PCI Audio(CS4281)
01 00 00 AGP Slot
00 13 00 PCI slot1
00 12 00 PCI slot2
00 11 00 PCI slot3

Format No: TGDFBD06-A

Page9/18

TriGem Computer Inc.

InstallCS4281 PCI Audio & CS4297A

Research & Development Center.

q PCI interrupt & master number routing map
VIA VT82C686A PCI/ISA bridge has five programmable interrupt request input signals. Any PCI interrupt source

connects to one of these interrupts signals and assigned to the free proper interrupt number by PnP BIOS.

SB INT
signals

First
PCI slot

Second
PCI slot

Third
PCI slot

On Board
PCI Audio

VT82C686A

PIRQA INTA INTB INTC
PIRQB INTB INTC INTD
PIRQC INTC INTD INTA
PIRQD INTD INTA INTB INTA
Master REQ0 REQ1 REQ2 REQ4
IDSEL AD30 AD29 AD27 AD24 AD18

2-5. Advanced Configuration and Power Interface (ACPI)

The motherboard and system BIOS support the ACPI that requires an ACPI-aware operating system such as
Window-NT 5.0 or Windows 98. ACPI feature include

• Plug and play and APM functionality normally contained in the BIOS

• Power management control of individual devices: add-in cards, hard disk drives, USB devices, and

Video

• A soft-off feature that enables operating system to power off the computer

• Support for multiple wakeup events

• Indication LED for normal mode (Green), standby mode (Blinking Green), and suspend mode (Blinking

Green) but this function is dependent on the LED logic.

q Wakeup devices and events

Wakeup device Wakeup events and functionality
Power switch Wakeup from Power-off status and power-off function
LAN Wakeup from power-off status
Modem Wakeup from power-off status

Sleep button Wakeup from power-off status and go to suspend mode (option)

2-6. Manufacturing Options

The motherboard has several manufacturing options according to OEM/ODM requirement. Make sure that these
options can be applied in the assembly stage, and it’s impossible to upgrade or change in the customer field.

Option items Selectable functionality Feature changes
Joystick port Front side
USB port Front side
Sound function PCI Audio & AC97 /

On chip Sound & AC97

or Install CS4297A

Format No: TGDFBD06-A

Page10/ 18

TriGem Computer Inc.

J3 J4 J5

J6

Research & Development Center.

III. Jumper & Connector Description

1. Motherboard Jumper Setting

J1

CN77

J7
J8
J9

1-1. Selection for Processor CPU Clock
& Intel Coppermine FC-PGA Processor is auto set the core to bus frequency ratio.

& Not used CN77, This is debugging option.

1-2. Other functionality

Jumper Pin Function 1-2 2-3

J6 CMOS RAM function Enable write/save Clear CMOS RAM
J7 Password function Enable password Clear password
J8 CMOS setup function Enable to edit CMOS

contents

J9 FDD write protect Enable to write data

to Floppy disk

Disable to edit CMOS contents

Format No: TGDFBD06-A

Page11/18

Disable to write data

to Floppy disk

TriGem Computer Inc.
Research & Development Center.

1-3. On Board Audio device function

J1 On Board PCI audio device functionality

1-2(default) Enable PCI audio controller built in the motherboard

2-3 Disable PCI audio controller built in the motherboard

1-4. OEM/ODM selector

The jumpers (J3, J4 & J5) will be optional parts for the OEM/ODM logo message selector.

Format No: TGDFBD06-A

Page12/ 18

TriGem Computer Inc.

1 2 3

1 2 3

1

45108376

2

11

13

9

12

15

14

Research & Development Center.

2. I/O Header Connector Description

2-1. Motherboard Internal Connector

q 1 : CPU FAN connector (CN54)

CN54

q 2 : System Chassis FAN connector (CN53)

CN53

Format No: TGDFBD06-A

Pin number Signal description

1 GND
2 FAN power
3 Tachometer (speed)

Pin number Signal description

1 GND
2 FAN control
3 Tachometer (Speed)

Page13/ 18

TriGem Computer Inc.

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

3 1 8 7 6 5 4 3 2 1

Research & Development Center.

q 3 : Joystick & USB connector (CN71) ; (Do not used in ATX form Factor)

Pin Signal description Pin Signal description

1 VCC 9 VCC
2 GD(4) 10 GD(6)
3 GD(0) 11 GD(2)
4 GND 12 MIDI OUT
5 GND 13 GD(3)

4 2 16 15 14 13 12 11 10 9

q 4 : Modem Sound (CN70)

CN70

q 5 : CD Sound (CN44)

6 GD(1) 14 GD(7)
7 GD(5) 15 MIDI IN
8 VCC 16 Key

1 GND 3 Positive DATA
2 Negative DATA 4 VCC

Pin Signal description Pin Signal description

1 MONO IN 3 GND
2 GND 4 MIC

Pin Signal description Pin Signal description

1 GND 3 GND

Mitsumi CD (CN44)

2 Left Sound 4 Right Sound

q 6 : LAN Wakeup (CN50)

Pin Signal description Pin Signal description

1 +5VSB 3 LANWK
2 GND

q 7 : Modem Wakeup (CN51)

Pin Signal description Pin Signal description

1 Modem Ring 3 +5VSB
2 GND

q 8 : Indicator Header (CN48)

2

1 3 5 6 8 9 111213 14151617 1920 22

PWR HDD DC SW IrDA Speaker

Pin Signal description Pin Signal description

1 VCC 12 GND (Option)
2 PM indicator signal 13 IRTX (Option)
3 GND 14 VCC (Option)
4 Key 15 IRSEL (Option)
5 VCC 16 N.C
6 HDD access signal 17 GND (Option)
7 Key 18 Key (Option)
8 Power-ON switch signal 19 VCC (Option)
9 GND 20 GND (Option)

10 Key 21 N.C

11 IRRX (Option) 22 Speaker signal (Option)

Format No: TGDFBD06-A

Page14/ 18

TriGem Computer Inc.

1 2 3 4

Front Audio (CN75)

3 2 1

Research & Development Center.

q 9 : HPD Indicator Header (CN73) (TG Option)

7 865321

PWR HDD DC/SW

q 10 : Aux. Indicator Header (CN49) (Option)

8 7 5 4 12

Sleep Reset Keylock

Pin Signal description Pin Signal description

1 Key lock Signal to Super I/O 2 GND
3 Key 4 Reset signal
5 GND 6 Key
7 Sleep Function signal 8 GND

Pin Signal description

1 NC
2 GND
3 LED POWER
4 NC
5 LED POWER
6 HDD access signal
7 GND
8 Power-ON switch signal

q 11 : Front Audio Control Connector (CN75) (Option) (Do not used in ATX form Factor)

Pin Signal description

1 LEFT_MIC_INPUT

1 2 3 4 5 4 6 7 8

2 +5VA
3 AGND
4 RIGHT_DAC_OUT
5 LEFT_DAC_OUT
6 AGND
7 NC
8 NC

q 12 : Front USB(3 ’rd) Connector (CN74) (Option) (Do not used in ATX form Factor)

Pin Signal description

1 VCC

Front USB (CN44)

2 Negative DATA
3 Positive DATA
4 GND

q 13 : USB(4’rd) Connector (CN76) (Option)

Pin Signal description

1 NC
2 GND

4 5

3 Positive DATA
4 VCC
5 Negative DATA

Format No: TGDFBD06-A

Page15/ 18

TriGem Computer Inc.

2 4 6

1 3 5

1 2 3 4

Research & Development Center.

q 14 ; PC/PCI connector (CN23) ; Support Only SER_IRQ Pin

Pin Signal description Pin Signal description

1 N.C 4 N.C
2 GND 5 N.C
3 N.C 6 SER_IRQ

q 15 ; Video Sound (CN45)

Pin Signal description Pin Signal description

1 Left Input Sound 3 GND
2 GND 4 Right Input Sound

Format No: TGDFBD06-A

Page16/ 18

TriGem Computer Inc.

9

8

Research & Development Center.

2-2. Motherboard External I/O Port

1
2
3
4

5

7

6

1. Joystick/MIDI 5. Serial Port(COM2)

2. Speak 6. Serial Port(COM1)

3. Line-IN 7. USB

4. MIC 8. Keyboard

9. Mouse

Format No: TGDFBD06-A

Page17/ 18

TriGem Computer Inc.
Research & Development Center.

Trademarks

Microsoft, Windows and Windows NT are registered trademarks of Microsoft Corp.
Other product names used in this publication are for identification purpose only and may be trademarks of their
respective companies.

Format No: TGDFBD06-A

Page18/ 18