Pentium P55-IT Manual de usuario

TRADEMARK

All products and company names are

trademarks or registered trademarks of

their respective holders.

P55-IT

ISA PCI

MotherBoard

Pentium

with Onboard PCI IDE and Super Multi-I/O.

Page

Chapter 4 - Onboard Technical Information ................. 4-1

P55-IT Board Layout............................................................ 1-2

Contents

Chapter 1 - Introduction ................................................ 1-1

Chapter 2 - Hardware Design......................................... 2-1

Motherboard Layout .............................................................2-1

Connectors and Jumpers.......................................................2-2

System Memory configuration ..............................................2-4

Cache Memory configuration ...............................................2-5

Integrated PCI Bridge...........................................................2-6

Chapter 3 - Award BIOS ................................................ 3-1

Standard CMOS Setup .........................................................3-2

BIOS Features Setup ............................................................3-2

Chipset Features Setup .........................................................3-6

Power Management Setup ....................................................3-9

PCI Configuration Setup ......................................................3-11

Load Setup Defaults .............................................................3-13

Change password .................................................................3-13

IDE HDD Auto Detection.....................................................3-14

Save & Exit Setup ............................................................... 3-16

Exit Without Saving .............................................................3-16

I/O & Memory Map ............................................................. 4-1

Time & DMA Channels Map ............................................... 4-2

Interrupt Map ...................................................................... 4-2

RTC & CMOS RAM Map .................................................... 4-3

Appendix A: Post Codes ...................................................... 4-4

Appendix B: I/O Connector .................................................. 4-8

ROM PCI/ISA BIOS (2A59CPA9)

CMOS SETUP UTILITY

AWARD SOFTWARE, INC.

The "LOAD SETUP DEFAULTS"function loads the system default data directly

fromROMandinitializeassociatedhardwareproperly. Thisfunctionwillbenecessary

when you accept this motherboard, or the system CMOS data is corrupted.

LOAD SETUP DEFAULT

ESC: QUIT :SELECT ITEM

F10:Save & Exit Setup (Shift)F2:Change Color

Time, Date, Hard Disk Type....

Load SETUP Default (Y/N)? Y

STANDARD CMOS SETUP PASSWORD SETTING

BIOS FEATURES SETUP IDE HDD AUTO DETECTION

CHIPSET FEATURES SETUP SAVE & EXIT SETUP

POWER MANAGEMENT VING

PCI CONFIGURATION SETUP

LOAD SETUP DEFAULT

NOTE :

Introduction1-1

Chapter 1

Introduction

The P55-IT motherboard is a high performance system hardware based

on Intel Pentium processor and is equipped with four PCI slots, four

standard ISA slots, Super Multi-I/O controller and dual ports PCI-IDE

connectors for the future expansion. The hardware dimension is 220mm x

280mm with four layer design technology.

Specification

Intel Pentium Processor operating at 50/75, 60/90, 66/100, 60/120, 66/

133, 60/150, 66/166 MHz and P55C/P55CT with 321 ZIF socket 7,

VRM and scalability to accept faster Pentium Processors in the feature.

Supports up to 128 MegaBytes DRAM(minimum of 8 MB) on board(72

Pins SIMM x 4), and BIOS auto DRAM/EDO RAM configuration.(Refer

to Chapter 2-3 System Memory Configuration)

Supports both Fast Page DRAM orEDO DRAM SIMM.

INTEL Triton 82430FX PCIset chipset.

Supports Burst/Pipelined burst synchronous ( The COAST solution ) and

asynchronous L2 Write Back Cache. The cache memory combination

could be 256KB/512KB (32KB*8 or 64KB*8 SRAM respectively).

Support four 16 bits ISA slots, four 32 bits PCI slots, and provides two

independent high performance PCI IDE interface capable of supporting

PIO Mode 3 and Mode 4 devices. The P55-IT supports four PCI Bus

Masters and a jumperless PCI INT# control scheme which reduces

configuration confusion when plug in PCI I/O controller card(s).

Supports AT API (e.g. CD-ROM) devices on both IDE interface.

Supports 1 floppy port(up to 2.88 MB), 1 parallel port (EPP,ECP port),

and 2 serial port (16550 Fast UART compatible).

Supports a PS/2 style mouse and standard AT style keyboard connectors.

Support Award Plug & Play BIOS . The BIOS is stored in Flash EPROM

form. It provides better upgradeability for the system.

Supports CPU Hardware sleep and SMM (System Management Mode).

Supports hardware Turbo switch as well as BIOS hot key switching.

P55-IT utilizes Lithium battery which provides environmental protection

and longer life time.

1-2 P55-IT

Keyboard BIOS

PCI#1

PCI#2

PCI#3

PCI#4

M 4

M 3

M 2

M 1

1 2 1 2

COM2

COM1 PRINTER

FDD CONN.

82371

Figure 1-1

KEYLOCK SPK. RESET G-LED HD-LED SLEEPTB-SW TB-LED

82438

U34

U37

U41

U42

U28

U29

U32

U33

P55-IT Layout

K/B

CONN.

PS/2

MOUSE

Socket 7

Intel

82437

RTC

82438

BIOS

VRM Socket

SRAM Module

J1 J2 J3 J4 J5 J6 JP5 JP14JP9

JP7

+12V

GND

JP6

TAG SRAM (U24)

JP6

JP1

Intel

IDE 2 CONN.

IDE 1 CONN.

JP2

JP3

39 40

JPS2

J23

JP1537C665

SMC

JP12

J25

J24 Power Conn.

J10 5

1 1

JPS1

160 80

BANK0 BANK1

+++

Hardware Design 2-1

2-1 Motherboard Layout

Chapter 2

Hardware design

The P55-IT is designed with Intel Triton 82430FX PCIset chipset which is

developed by INTEL Corporation to fully support Intel Pentium PCI/ISA system.

The Intel "Triton" 82430FX PCIset chipset prpovides increased integration and

improved performance designs. The "Triton" 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 SMC (STANDARD MICROSYSTEMS

CORPORATION) FDC37C665GT Super I/O controller provides the standard PC

I/O function: floppy interface (up to 2.88 MB), two 16 Byte FIFO serial ports and

EPP/ECP capable parallel port. The P55-IT layout is shown in previous page (left

page) for user's reference. Care must be taken when inserting memory modules,

inserting Intel P54C/P55C/P55CT processor, inserting VRM( Voltage Regulator

Module) or even plugging PCI card into associated slots to avoid damaging any

circuits or sockets on board. A cooling fan is strongly recommended when install-

ing P54C/P55C processor due to possible overheat.

The P55-IT supports minimum of 8MB of System Memory and maximum of

128MB while L2 Cache can be 256KB/512KB synchronous (The COAST "Cache-

On-A-STick" solution ) or asynchronous SRAM to increase system performance.(

refer to Page 2-5 Cache Memory Configuration for the details.)

The P55-IT support standard Fast Page or EDO (Extended Data Out or Hyper

Page Mode) DRAM. The EDO DRAM is designed to improve the DRAM read

performance (When L2 Cache is asynchronous SRAM and not installed). The

P55-ITprovides four 72-pins SIMM sites for memory expansion. The socket

support 1M x 32(4MB), 2M x 32(8MB), 4M x 32(16MB), and 8M x 32(32MB)

single-sided or double-sided SIMM modules. The memory timing requires 70 nS

Fast page devices or 60 nS EDO DRAM. Memory parity generation and checking

is not supported. (DRAM Modules may be parity[x 36] or non-parity[x 32].

The P55-IT supports Onboard two PCI IDE connectors, and detects IDE

harddisk type by BIOS utility automatic.

The P55-IT supports Award Plug & Play BIOS for the ISA and PCI cards. The

BIOS can be located in Flash EPROM. The advantage of having Flash EPROM is

much easier to replace BIOS code if necessary.

2-2 P55-IT

1.Power LED(+)

2.N/C

3.GND

4.Keylock

5.GND

5 6

4 5,6 GND

3,4 +12V

2-2 Connectors and Jumpers

This section describes all of the connectors and jumpers equipped in the

motherboard. Please refer to Figure 1-1 for actual location of each connector and

jumper.

J1 KeyLock - Keyboard lock switch & Power LED connector.

J2 Speaker - connect to the system's speaker for beeping.

1. Speaker

2. N/C

3. GND

4. GND

J3 Reset - Close to restart system.

J4 Turbo Switch : Open for slower speed while Close for

higher speed. A BIOS hot key <CTRL><ALT><+>

also brings system to a higher speed while<CTRL>

<ALT><-> set system to a slower speed(When J4 is open.).

J5 Turbo LED indicator - LED ON when higher speed is

selected.

J6 Power Saving LED indicator - LED ON when system is in

any Saving mode.

J7 The Power supply of the CPU cooling fan

1,2 GND

JP5 IDE LED indicator - LED ON when Onboard PCI IDE

Harddisks activites.

Hardware Design 2-3

will instantly "wake up".

1 2 3

J10 PS/2 MOUSE CONNECTOR:

1.RED wire

3.GREEN wire

4.NC

5.YELLOW wire

2.BLUE wire

JP1 CPU Install : 1-2 for Intel Pentium P54C, P54CS CPU (Default).

2-3 for Intel Pentium P55C/P55CT CPU.

JP2 Onboard IDE 1: 1-2 for Primary IDE 1 Interrupt IRQ14.

2-3 for None

JP3 Onboard IDE 2 : 1-2 for Secondary IDE 2 Interrupt IRQ15.

2-3 for None

JP14 Sleep/Resume switch : Close to enter sleep mode.

A keystrobe or mouse movement (mouse driver exists). The system

J24 Onboard SMC's chip select :

Open: Normal operation.(Default)

Close: Disable the Onboard SMC chip.

JP15 Keyboard Operation Clock Select :

1-2 The clock rate is depend on the system AT CLOCK

( J25 ). (Default)

2-3 The clock rate is 12MHz.

JP6 EPROM BIOS Select : 1-2 for 5V Flash EPROM (Default)

while 2-3 for 12V Flash EPROM.

2-4 P55-IT

JP7 JP9 CLOCK Chip Frequency.

2-3 2-3 x ( 1.5 ) (Default)

1-2 2-3 x ( 2 )

2-3 1-2 x ( 3 )

1-2 1-2 x ( 2.5 )

2-3 System Memory Configuration

The P55-IT supports different type of settings for the system memory. There is no

jumper nor connector needed for memory configuration. Following figures provides

all possible memory cominations.

Clock/CPU Op. JPS1 JPS2 JP7 JP9 J25

JP9

Clock chip is IMI SC484

66/166 MHz CLOSE CLOSE 1-2 1-2 2-3

60/120 MHz CLOSE OPEN 1-2 2-3 2-3

1 2 3

J25 System AT BUS CLOCK Select:

1-2 ATCLK is devided PCICLK* by 3.

2-3 ATCLK is devidedPCICLK* by 4.(Default)

* CPU OP. is CPU operation at 75, 90, 100 MHz, etc.

*Clock is System Clock.

* PCICLK = System Clock / 2

50/75 MHz OPEN OPEN 2-3 2-3 1-2

If system is operating at 66/100 MHz, thanPCICLK is 33Mhz.

* The JP7 and JP9 be used to setting the faster Pentium Processor in the feature.

JPS1

JPS2

66/100 MHz CLOSE CLOSE 2-3 2-3 2-3

JP7

60/90 MHz CLOSE OPEN 2-3 2-3 2-3

60/150 MHz CLOSE OPEN 1-2 1-2 2-3

66/133 MHz CLOSE CLOSE 1-2 2-3 2-3

J25

1 2 3

Hardware Design 2-5

U18

CACHE TAG SRAM Data SRAM Jumper Setting

Size (U24) Install JP10

8K8 x 1 or 32K8 x 8

256KB 16K8 x 1 or U28,29,32,33 1-2

32K8 x 1 U34,37,41,42

16K8 x 1 or 64K8 x 8

512KB 32K8 x 1 U28,29,32,33 2-3

U34,37,41,42

1 2 3

TAG SRAM

Note: When you have a cache module to plug into a 160-pin daul

readout connector. You must make sure that cache modules has a

TAG SRAM(Care must be taken when you inserting the modules. If

you can't sure whether that is a COAST solution modules or not.

Please contact the modules supplier to avoid burned-out and

damaging any modules circuits.) and take off the Onboard's DIP

asynchronous DATA and TAG SRAM. The BIOS can auto-detect the

type and size of the SRAM modules on display System Configura-

tions before the system boots Operating System.

160

80 1

KEY

Burst/Pipelined burst/Asynchronous SRAM Modules

JP10

U28

U29

U32

U33

U34

U37

DATA SRAM

U24

2-4 Cache Memory Configuration

The second level (L2) of cache is installed in the motherboard to increase the

system performance. The P55-IT supports different type of combinations for the

cache installation. The COAST (Cache-On-A-STick. The cache modules has a

TAG SRAM.) solution provides Onboard flexibility, allowing Onboard to accom-

modate 256KB and 512KB asynchronous, burst and piplined burst SRAM modules.

Jumper JP10 settings is used to Onboard's DIP asynchronous SRAM for differential

such combinations. Please refer to following configurations for the details.

U42

U41

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