Viglen N440BX Manual de usuario

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Introduction

This manual describes the Viglen N440BX motherboard inside your computer. The

motherboard is the most important part of your computer. It contains all of the CPU,

memory and graphics circuitry that makes the computer work.

The motherboard contains the very latest CPU design, the Intel Pentium II

processor, which includes Intel’s MMX technology. MMX technology adds a total of

57 new instructions to the CPU, all of which are designed to vastly improve both

multimedia and communications on your PC. The combination of the Intel Pentium II

processor, MMX technology and Viglen expertise make this a formidable computer.

This manual contains technical information about the Viglen N440BX motherboard

and other hardware components inside your computer. If you are new to computers

we recommend that you read the user guide first. If you are an experienced

computer user this manual should provide all the information you will need to

perform simple upgrades and maintenance.

We hope that this manual is both readable and informative. If you have any

comments or suggestions about how we could improve the format then please fill out

the form at the back of the manual and send it to us.

Above all we hope that you enjoy using your Viglen computer.

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Figure 1

System Board Components

A Secondary processor connector

(SEC) N System fan connector

B Primary processor connector (SEC) O Server monitor module connector

C Heatsink fan connectors P Narrow SCSI connector

D ATX power connector Q Wide SCSI connector

E Battery R DIMM Memory sockets (4)

F Main power connector S ISA expansion slots (2)

G Front panel connector, 16 pin T PCI expansion slots (4)

H AT front panel connector U Chassis intrusion header

I System fan connector V RJ-45 network controller

J Speaker W USB connector

K Diskette drive connector X Serial port B header (COM 2)

L IDE connectors Y I/O connections (VGA, Serial, etc.)

M Configuration jumper blocks Z PS/2 keyboard and Mouse ports

A B CD E

Pri.

Sec.

OPQR

Back Panel Connectors

The motherboard external IO connectors are attached to a metallic I/O shield.

This shield serves several purposes:

•It protects the sensitive motherboard from any external EMC problems.

•It stops the computer from interfering with other electrical devices.

•It allows the motherboard to be easily upgraded in the future without having to

resort to buying a whole new case. Simply change the I/O shield to match the

motherboard.

The I/O shield provides external access to PS/2 keyboard and mouse connectors as

well as one serial port, one parallel port, the VGA port and a RJ45 Local Area

Network (LAN) connection.

Figure 2

NOTE:

The mouse and keyboard can be plugged into either of the PS/2 connectors. Power to the

computer should be turned off before a keyboard or mouse is connected or disconnected.

NETWORK

SERIAL 1

PRINTER

MOUSE

KEYBOARD

VGA

Feature Summary

The N440BX motherboard supports two Intel Pentium ® II processors with second –

level cache integrated in a Single Edge Contact (SEC) cartridge operating at 233,

266, 300, 333, 350, 400MHz and beyond.

The motherboard features:

Form factor

•ATX form factor of 12 x 13 inches.

Processor

•Dual Pentium II processor.

•66 or 100 MHz Front Side Bus speed.

•512 KB second-level cache on the substrate in the Single Edge Contact

(SEC) cartridge.

•2 * Slot 1 connector’s.

Main memory

•Four 168-pin DIMM sockets.

•Support for up to 1 GB of 100MHz synchronous Double-banked SDRAM or

512 MB of 100MHz Synchronous Single-banked SDRAM.

•ECC 3.3V memory only.

Intel 440BX PCI/IDE Interface.

•Intel 82443BX PCI/AGP controller (PAC).

-Integrated PCI bus mastering controller.

•Intel 82371EB PCI/ISA IDE Xcelerator (PIIX4).

-Supports up to four IDE drives or devices. PIO mode 4 and DMA

-Transfer rates up to 22MB/sec.

-DMA controller.

-Two fast IDE interfaces.

I/O features.

•The 87309 devices supports two FIFO serial ports, one Multi-mode Parallel

port, floppy disk drive, PS/2 keyboard and mouse and an integrated Real

Time Clock (RTC).

Symbios SYM53C876 controller Interface.

•Support for 8 or 16 bit fast SCSI.

•Up to 15 devices.

•Max data transfer 40MB/sec.

Integrated Network Interface.

•Intel 82558 PCI LAN adapter.

•For 10 or 100 Mbps TX fast Ethernet networks.

Integrated PCI Video.

•CL-GD5480 64-bit VGA.

•1MB RAM video memory.

•Support for resolutions up to 1280 x 1024 and support for 16.7 M colors in

certain resolutions.

Expansion slots.

•Two ISA slot one shared.

•Four PCI slots one shared.

Additional features.

•Intel/Phoenix BIOS that supports Plug and Play, advanced IDE features, and

password security

•Plug and Play compatible.

Microprocessor

The motherboard supports dual Pentium II processor’s. The processor’s VID pins

automatically program the voltage regulator on the motherboard to the required

processor voltage. The motherboard currently supports processor’s that run

internally at 233, 266, 300, 333, 350 and 400MHz all with 512 KB second-level

cache. The processor’s implements MMX ™technology and maintains full backward

compatibility with the 8086, 80286, Intel386 ™, Intel486 ™, Pentium, and Pentium

Pro processors. The processor’s numeric coprocessor significantly increases the

speed of floating-point operations and complies with ANSI/IEEE standard 754-1985.

Microprocessor Packaging

The Pentium II processor is a Single Edge Contact (SEC) Cartridge that connects to

the motherboard through Slot 1, a 242-pin edge connector. The Pentium II

processor S.E.C. Cartridge consists of:

•Processor card including the processor core and the second-level cache:

burst pipelined synchronous static RAM (BSRAM)

•Thermal plate

•Back cover

When the Pentium II processor’s are mounted into the Slot 1 connectors, they are

secured by a retention mechanism attached to the motherboard.

Second Level Cache

The second-level cache is located on the substrate of the SEC cartridge. The cache

includes burst pipelined synchronous static RAM (BSRAM). There are four BSRAM

components totaling 512 KB in size. All supported onboard memory can be cached.

Processor Upgrades

The motherboard can be upgraded with Pentium II processors that run at higher

speeds. When upgrading the processor the USER must manually configure the

processor speed’s.

Memory

Main Memory

The motherboard has four dual inline memory module (DIMM) sockets. Minimum

memory size is 16 MB; maximum memory size is 512 MB with 1 GB being available

in the future with the use of double-banked DIMMs. The BIOS automatically detects

memory type, size, and speed.

The motherboard supports the following memory features:

•168-pin DIMMS with gold-plated contacts.

•100 MHz PC/100 SDRAM only.

•ECC (72-bit) 3.3 V memory only.

•Single or double-banked DIMMs in the following sizes:

Table 1

DIMM Size ECC Configuration

16 MB 2 Mbit x 72

32 MB 4 Mbit x 72

64 MB 8 Mbit x 72

128 MB 16 Mbit x 72

256 MB 32 Mbit x 72

Memory can be installed in one, two, three or four sockets. Memory size can vary

between the sockets.

SDRAM

Synchronous DRAM (SDRAM) improves memory performance through memory

access that is synchronous with the memory clock. This simplifies the timing design

and increases memory speed because all timing is dependent on the number of

memory clock cycles.

NOTE:

To function properly, SDRAM DIMMS must meet the PC/100, 100 MHz, and unbuffered

SDRAM specification for 72-bit SDRAM.

ECC Memory

Error checking and correcting (ECC) memory detects multiple-bit errors and corrects

single-bit errors.

Chipset

The Intel 440BX chipset is the latest generation of Intel’s PCI set and is designed for

the Pentium II processor. It consists of the Intel 82443BX PCI/A.G.P. controller

(PAC) and the Intel 82371EB PCI/ISA/IDE controller (PIIX4) bridge chip.

Intel 82443BX PCI/A.G.P. Controller (PAC)

The PAC provides bus-control signals, address paths, and data paths for transfers

between the processor’s host bus, PCI bus, and main memory. The PAC comes in a

492-pin BGA package and features:

•Processor interface control

Processor host bus speed of 100 MHz or 66 MHz

32-bit addressing

GTL+ compliant host bus

•Integrated DRAM controller

Support for synchronous DRAM (SDRAM)

72-bit non-interleaved path-to-memory

Auto detection of memory type

Support for Mbit DRAM devices

Symmetrical and asymmetrical DRAM addressing

Support for 3.3 V DRAM only

•Fully-synchronous PCI bus interface

Compliance with PCI specification

PCI-to-DRAM access greater than 100 MB/sec

Support for five PCI bus masters.

Delayed transactions

PCI parity checking and generation support

•Data Buffering

Host-to-DRAM, PCI-to-DRAM, and A.G.P.-to-DRAM read buffers

Write-combining for host-to-PCI burst writes

Supports concurrent host, PCI, and A.G.P. transactions to main memory

•Support for system management mode (SMM)

Intel 82371EB PCI ISA IDE controller (PIIX4)

The PIIX4 is a multifunction PCI device implementing the PCI-to-ISA Bridge, and PCI

IDE functionality. The PIIX4 comes in a 324-pin MBGA package that features:

•Multifunction PCI-to-ISA bridge

Support for the PCI bus at 33 MHz

Compliance with PCI specification

Full ISA bus support

•Integrated dual-channel enhanced IDE interface

Support for up to four IDE devices

PIO Mode 4 transfers at up to 16 MB/sec

Support for Ultra DMA/33 synchronous DMA mode transfers up to 33

MB/sec

Bus master mode with an 8 x 32-bit buffer for bus master PCI IDE burst

transfers

•Enhanced DMA controller

Two 8237-based DMA controllers

Support for PCI DMA with three PC/PCI channels and distributed DMA

protocols

•Interrupt controller based on 82C59

Support for 15 interrupts

Programmable for edge/level sensitivity

•16-bit counters/timers based on 82C54

•Real-time Clock

256-Byte battery-backed CMOS SRAM

Includes date alarm

IDE Support

The motherboard has two independent bus-mastering PCI IDE interfaces. These

interfaces support PIO Mode 3, PIO Mode 4, ATAPI devices (e.g., CD-ROM), and

DMA mode transfers. The BIOS supports logical block addressing (LBA) and

cylinder head sector (CHS) translation modes. The BIOS automatically detects the

IDE device transfer rate and translation mode.

Programmed I/O operations usually require a substantial amount of processor

bandwidth. However, in multitasking operating systems, the bandwidth freed by bus

mastering IDE can be devoted to other tasks while disk transfers are occurring.

LS-120 Support

LS-120 MB Diskette technology enables you to store 120MB of data on a single, 3.5”

removable diskette. LS-120 technology is backward (both read and write)

compatible with 1.44MB and 720KB DOS-formatted diskette and is supported by the

Windows NT operating system.

The N440BX board allows connection of an LS-120 compatible drive and a standard

3½” floppy drive. The LS-120 drive can be configured as a boot device before a

floppy drive, if selected in the BIOS setup utility.

NOTE:

If you connect an LS-120 drive to an IDE connector and configure it as the “A” drive and

configure a standard 3.5” floppy as “B” drive, the standard floppy must be connected to the

floppy drive cable’s “A” connector (the connector at the end of the cable).

The BIOS setup utility can be configured to boot firstly from either the LS120 or standard 3½

“ floppy drive.

Real-time Clock, CMOS SRAM, and Battery

The real-time clock is compatible with DS1287 and MC146818 components. The

clock provides a time-of-day clock and a multicentury calendar with alarm features

and century rollover. The real-time clock supports 256 bytes of battery-backed

CMOS SRAM in two banks that are reserved for BIOS use.

The time, date, and CMOS values can be specified in the Setup program. The

CMOS values can be returned to their defaults by using the Setup program.

An external coin-cell battery powers the real-time clock and CMOS memory. When

the computer is not plugged into a wall socket, the battery has an estimated life of

three years. When the computer is plugged in, the 3.3-V standby current from the

power supply extends the life of the battery. The clock is accurate to ±13

minutes/year at 25 ºC with 3.3 V applied.

Super I/O Controller

The PC87309 Super I/O Controller from National Semiconductor is an ISA Plug and

Play compatible, multifunction I/O device that provides the following features:

•Serial ports

Two 16450/16550A-software compatible UARTs

Internal send/receive 16-byte FIFO buffer

Four internal 8-bit DMA options for the UART with SIR support (USI)

•Multimode bidirectional parallel port

Standard mode: IBM and Centronics compatible

Enhanced parallel port (EPP) mode with BIOS and driver support

High-speed extended capabilities port (ECP) mode

•Floppy disk controller

DP8473 and N82077 compatible

16-byte FIFO

PS/2 diagnostic-register support

High-performance digital data separator (DDS)

PC-AT and PS/2 drive-mode support

•Keyboard and mouse controller

Industry standard 8042A compatible

General-purpose microcontroller

8-bit internal data bus

By default, the I/O controller interfaces are automatically configured during boot up.

The I/O controller can also be manually configured in the Setup program.

Serial Ports

Two 9-pin D-Sub serial port connectors, one is located on the back panel and the

other connected to a 10pin header and is relocatable.

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