TRIGEM NARA-M Micro-ATX Hardware Document

TriGem Computer Inc.
Research & Development Center.

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TriGem Micro-ATX Motherboard (NARA-M)

Hardware Document

November 18, 2000

Revision 1.1

TriGem Computer Inc.
Research & Development Center.

Format No: TGDFBD06-A

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Document Revision History

Released date Revision Description

May 16, 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

July 18,2000

Rev. 1.0 Mass Product

Nov 18,2000

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

TriGem Computer Inc.
Research & Development Center.

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Contents of Table

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

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

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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)

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

(66/100, 100/66, 100/133, 133/100) mode with FSB

• 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-

33 interface

- 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

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- 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

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II. System Overview

Rear Port

Intel Pentium-III

Cu-256K FC-PGA

VIA

VT82C686A

Host Interface

PCI Interface

DIMM Modules

3 PCI Slots

CS4281

Speaker MICLine In

1 AGP (2X or 4X) Slot

Primary IDE

Secondary IDE

FDD

Super I/O Function

Rear Port

MOUSE

K/B

Parallel Port

2 Serial Ports

4 USB Ports

(2 ports are Option)

Joystick and

MIDI

VIA

VT82C694X(Z)

CS4297A

Codec