TYAN TRINITY I845 User manual

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Trinity i845
S2090
User’s Manual
Revision 1.00
Copyright © Tyan Computer Corporation, 2001. All rights reserved. No part of this manual may be
reproduced or translated without prior written consent from Tyan Computer Corp.
All registered and unregistered trademarks and company names contained in this manual are
property of their respective owners including, but not limited to the following.
Tyan, Trinity S2090 are trademarks of Tyan Computer Corporation.
Intel, Intel Pentium, i845, combinations thereof are trademarks of Intel Corporation.
Award BIOS is a trademark of Phoenix Software.
Microsoft, Windows are trademarks of Microsoft Corporation.
IBM, PC, AT, PS/2 are trademarks of IBM Corporation.
Winbond is a trademark of Winbond Electronics Corporation.
Micronics is a trademark of Micronics Corporation.
Portable Document Format (PDF) is a trademark of Adobe Corporation.
Iomega, Zip are registered trademarks of Iomega Corporation.
Information contained in this document is furnished by Tyan Computer Corporation and has been
reviewed for accuracy and reliability prior to printing. Tyan assumes no liability whatsoever, and
disclaims any express or implied warranty, relating to sale and/or use of Tyan products including
liability or warranties relating to fitness for a particular purpose or merchantability. Tyan retains the
right to make changes to product descriptions and/or specifications at any time, without notice. In
no event will Tyan be held liable for any direct or indirect, incidental or consequential damage, loss
of use, loss of data or other malady resulting from errors or inaccuracies of information contained in
this document.

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Table of Contents
Before you begin…
Chapter 1: Introduction
1.1 Congratulations
1.2 Hardware Specifications
1.3 Software Specifications
Chapter 2: Board Installation
2.1 Front Panel Connector
2.2 CMOS Reset
2.3 FAN Connectors
2.4 Thermal Trip Connector
2.5 Boot Block Connector
2.6 Processor HOT LED
2.7 Hard Drive LED
2.8 Hardware Reset Switch Connector
2.9 BIOS Flash Utility
2.10 Mounting the Motherboard
2.11 Installing Memory
2.12 Installing the CPU and Cooling Fan
2.13 Connecting IDE and Floppy Drives
2.14 Installing Add-in Cards
2.15 Connecting PS/2, USB, Serial
Devices
2.16 Connecting the power supply
2.17 You’re done!
Chapter 3: BIOS Setup
3.1 Standard CMOS Features
3.2 Advanced BIOS Features
3.3 Advanced Chipset Features
3.4 Integrated Peripherals
3.5 Power Management Setup
3.6 PnP/PCI Configuration
3.7 Frequency/Voltage Control
Chapter 4: Installing the Hard Drives
Chapter 5: System Resources
5.1 Beep Codes
5.2 Flash Utility
Appendix I: Glossary
Technical Support
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Before you begin…
Check the box contents!
The retail motherboard package should contain the following:
1x Trinity i845 motherboard
1x Pentium 4 Heatsink Mounting Kit
1x 34-Pin floppy drive cable
1x Ultra-DMA-100/66/33 IDE cable
1x Trinity i845 user’s manual
1x Tyan driver CD
If any of these items are missing, please contact your vendor/dealer for replacement before
continuing with the installation process.

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Chapter 1: Introduction
1.1 Congratulations!
You are now the owner of the Tyan Trinity i845 motherboard, the most reliable, high performance
motherboard for Pentium 4 processing. The Trinity i845 supports the latest Pentium 4 processors
as well as all the latest peripherals. It’s a high performance board targeted mainly at enthusiasts,
power users and workstations. The Trinity i845 also provides the easiest upgrade path for existing
PC users who don’t want the hassle of purchasing a new chassis and power supply. Use an
existing ATX power supply and the Trinity i845 will support it out of the box. *Please see Tyan’s
website for updates and information concerning CPU information and support:
http://www.tyan.com
The Trinity i845 leaves plenty of room for upgrades but also includes all the necessary
components to get you started. Built into the Trinity i845 is a 100Mbit Ethernet solution provided
by Intel for quick network setups and blazing fast transfer speeds.
All six PCI slots are free and open for upgrades. Adding to the ease of expansion and support is
the use of current industry standard PC133 SDRAM. Boasting high speeds at low costs, the
Trinity i845 is the ideal platform for the Pentium 4.
Remember to visit Tyan’s Website at http://www.tyan.com. There you can find information on all of
Tyan’s products with FAQs, distributors list and BIOS setting explainations.
1.2 Hardware Specifications
Processor
•Single PGA478 ZIF sockets
•Supports one Intel Pentium 4 (478pin)
processor
•SDR bus support for 133MHz
•Integrated VRM
•Auto configure Clock Multiplier
•Auto detect CPU core voltage
Chipset
•Intel i845 (Brookdale) Chipset
•Intel ICH 2
•Onboard 82562ET 10/100Mbit LAN (future
option)
•LPC I/O Winbond with hardware monitoring
built in.
Memory
•Three 3.3v 168-pin DIMM sockets
•Supports up to 3GB of
unregistered/unbuffered PC133 SDRAM
Expansion Slots
•1 AGP (1.5v, 4x)
•6 32-bit/33MHz PCI bus mastered slots
Hardware Monitoring
•Winbond W83782D hardware monitoring
ASIC
•CPU Temp, voltage and fan monitoring
BIOS
•Award 4Mb BIOS Flash ROM (FWH)
•Fully Plug-and-Play
•APM 1.2/ACPI 1.0/PC99 compliant
•DMI 2.0 compliant
•Soft Power Down
•Multiple boot options
•Instant PC (Suspend to RAM support)
•3-pin wake on LAN header (requires ATX
standby 5v/750mA power supply)
•2-pin chassis intrusion header.
Form Factor
•ATX footprint (12” x 9.6”)
•ATX 2.1 with 30A on 5v line Power supply
required
•One 20-pin ATX power connector
•Stacked USB (two) ports
•Stacked keyboard and mouse ports

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Integrated PCI IDE
•Two 40-pin IDE connectors for up to 4
devices
•PIO mode 3, 4, UltraDMA 33/66/100 support
•ATAPI HDD CDROM and LS-120 support
Integrated I/O
•One floppy connector supports up to two
drives
•Two 9-pin 16550-based serial ports
•One 25-pin SPP/ECP/EPP parallel port
•One IR Tx/Rx header
•2 USB ports
•PS/2 keyboard and mouse ports
Regulatory
•FCC DoC (declaration of Conformity)
•European Community of CE (declaration of
Conformity)
1.3 Software Specifications
OS Windows 9x/ME/NT/2000

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Chapter 2: Board Installation
Installation
You are now ready to install your motherboard. The mounting hole pattern of the Trinity i845
matches the ATX system board specifications. Your chassis should support a standard ATX
motherboard form factor.
How to install our products right… the first time
The first thing you should do is read this user’s manual. It contains important information which will
make configuration and setup much easier. Here are some precautions you should take when
installing your motherboard:
(1) Ground yourself properly before removing your motherboard from the antistatic bag.
Unplug the power from your computer power supply and then touch the power supply.
For the safest conditions, Tyan recommends wearing a static safety wrist strap.
(2) Hold the motherboard by its edges and do not touch the bottom of the board.
(3) Avoid touching the motherboard components, IC chips, connectors, and leads.
(4) Avoid touching memory module contacts and IC chips
(5) Place the motherboard on a grounded antistatic surface or on the antistatic bag from
which it came in.
Having reviewed the precautions above, the next step is to take the motherboard out of the
cardboard box and static bag, hold it by its edges and place it on a grounded antistatic surface,
component side up. Inspect the board for damage.
NOTE DO NOT APPLY POWER TO THE BOARD IF IT HAS BEEN DAMAGED

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2.1 Front Panel Connector (J20)
Your chassis will usually come with connectors to install onto the motherboard, such as HDD and
Power LEDs. The Front Panel Connector (J80) has been implemented for such purposes.
* optional feature available on some Trinity i845 models
J20
Infrared
(IrDA)
HM_INTR
IR TX
RST
SW HDD LED
GND
IR RX
VCC
SW
15
GND GND
VCC+
13
17
11
9
7
5
3
1
16
14
18
12
10
8
6
4
2
GND GND
NC NC NC
GND
SW
Slp LED+
Pwr LED+
PWR
SW PWR LED
Chassis Intrusion (pins 17+18)*

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2.2 CMOS Reset (JP1)
If you have been locked out of your system because you forgot your password, or set the CMOS
incorrectly, or have just finished flashing your BIOS, you will need to reset the CMOS. The
instructions are as follows:
1. Power off the system
2. Close pins 2-3 on JP1
3. Wait about three seconds
4. Close pins 1-2 on JP1, then power on the system again
By following this procedure, you will erase your password and reset the CMOS. The location of
JP1 is shown in the diagram below.
JP1
CLOSE 1-2
CLOSE 2-3
Normal
Clear CMOS
* default is CLOSE 1-2

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2.3 FAN Connectors* (FAN1, FAN2, FAN3, FAN ALWAYS ON)
These FAN connectors can be used to install cooling devices. FAN1 is for CPU fan.
FAN Pinout
GND
+12V
SPEED
1
2
3
FAN3
FAN2
The FAN connectors FAN1, FAN2, FAN3 and FAN4 --- are 12V at 0.3A
and only support cooling fans below or up to that rating. Tyan takes
no responsibility and will not be held liable for damage related to the
misuse of these fan headers.
NOTE
FAN
ALWAYS ON
FAN Specifications
Voltage
Amperage
12V
0.3A
* For hardware monitoring information related to FAN1, FAN2, and FAN3, please check the
Hardware Monitoring section.
FAN1

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2.5 Thermal Trip header (J5)
This header is used to control the emergency overheat shutdown.
THERMTRIP (J5)
•
1
2
* default is OPEN

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2.6 Boot Block (JP2) – MUST REMAIN CLOSED
Many newer systems come with a feature where a 4 KB "boot block" program is included as part
of the BIOS. This is a tiny piece of code whose job it is to recover from a situation where the BIOS
code is incorrect or corrupted.
If your motherboard supports this feature, when the PC tries to boot and finds the BIOS code
corrupted, the boot block will try to recover the BIOS code, usually by reading it from a specially-
prepared floppy disk. You may have to change a jumper on the motherboard to enable this
capability, and you may need to make use of a "plain vanilla" ISA video card. The boot block will
load the BIOS code and then when you next reboot, the regular BIOS code should be in place and
the problem resolved.
JP2
2
1
•
* default is CLOSED

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2.7 Processor HOT LED (J10)
This jumper let’s you connect an LED on your chassis that will turn on if the CPU reaches a critical
temperature.
J10 PROC HOT LED
2
1
•

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2.8 Hard Drive LED (J12)
This jumper let’s you connect an LED on your chasses that will light up when the IDE drives are in
use.
HDD LED (J12)
2
1
•

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2.9 Hardware Reset Switch Connector
The reset switch on your chassis can provide you with the Hardware Reset function, which is the
same as power on/off, except that the system will immediately execute a cold start after the reset
button is pushed. The reset connector is part of the Front Panel (J80) jumper block (pins 5 and 7).
2.10 BIOS Flash Utility
You can upgrade the BIOS of this motherboard by using the Flash Utility. See the System
Resources page 45 for details. Also check that you have the newest BIOS, available from the
Tyan website: http://www.tyan.com
J20
RST
SW
SW
15
GND
13
17
11
9
7
5
3
1
16
14
18
12
10
8
6
4
2
Slp LED+
Pwr LED+
PWR
LED

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2.11 Mounting the motherboard
Your chassis may include mounting hardware. If mounting hardware was included, you can use
the following examples to help you in stalling your motherboard into the chassis.
If your chassis has the studs integrated into the chasses wall, then you would only need to use
screws (possibly included with your chassis) to install the motherboard. See examples (Figure 2.0,
shown below for more details.
If the chassis includes mounting hardware without the studs pre-installed, then you will need to
install the motherboard using the mounting hardware as shown in the examples below.
Remember not to over tighten any of the screws, or you may risk breaking internal traces in the
surrounding area, or damage the motherboard in some other way.
Other examples of how to install your motherboard using other hardware (that may or may not
have been included with your chassis) are shown below.
chassis wall
stud
screw
motherboard
base
One solution for installing motherboardType of hardware Another solution
chassis wall
standoff
motherboard
base
chassis wall
standoff
motherboard
base
NOTE The diagrams above are only representative of a few solutions for installing a motherboard into the chassis. The installation procedure for installing your
motherboard into the chassis may differ.

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2.12 Installing Memory
Please keep in mind that although some memory modules may appear to be high-quality, they
may contain inferior or substandard parts. The type of memory you choose to install should be
checked against the memory compatibility list, which is available from Tyan’s website at
http://www.tyan.com.
Here are some details of memory installation for this board:
-At least one SDRAM DIMM* must be installed for the system to POST.
-Supports 128MB, 256MB, 512MB, and 1024MB(not tested as of print) PC133.
-All installed memory will be automatically detected.
-The motherboard supports up to 3.0GB** of PC133 unregistered/unbuffered SDRAM
memory.
Memory Installation Procedure
Step1: Line your module up so that the pins fit into the socket. There is only one way your DIMM
can fit properly. Make sure that the short row of pins is lined up with the short gap in the DIMM
socket, just as the long row of pins should line up with the long gap in the DIMM socket.
Step2: Insert the DIMM by pushing the module into the socket with even force Do not insert one
end and then the other: install the whole module at once or you might bend the DIMM pins. Make
sure the DIMM is securely seated.
NOTE Your memory modules may not look like those in the above diagram; they are
used simply as examples.
Look the DIMM into place by pushing the clips back on either end of the socket onto the notches
in the ends of the DIMM (see pictures above details).

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Removing a DIMM
Removing a DIMM is just the reverse: pull back the clips from the DIMM (see pictures on previous
page), and carefully pull the module straight out. Place the DIMMs in an anti-static bag as soon as
you remove them to avoid static damage.
1 2
Suggested Memory Configurations
The table below shows some of the possible memory configurations. Not all possible
configurations are listed. Your memory configurations may differ from one or more of the
combinations** shown below.
2.13 Installing the CPU and Cooling Fan
Intel Pentium 4 processors up to 2.0GHz can be used on this board. For more information on CPU
compatibility, check Tyan’s website at http://www.tyan.com/
When installing your CPU, remember the following:
-The CPU is a sensitive electronic component and can easily be damaged by static
electricity
-Do not touch the CPU pins with your fingers
-You should be able to insert the CPU into the socket with virtually no force
-Do not press down hard on the CPU as you might bend or break pins, or otherwise
damage the CPU.
-The CPU voltage will automatically be detected by the motherboard, so there is not
need to set any jumpers or BIOS setting.
Installing the CPU
Before installing the CPU, check it for any visible damage. Make sure none of the pins are bent or
missing. Be sure where Pin 1 is on both the CPU and the socket. The following steps each have
corresponding picture next to it to help guide you through the installation.
Careful lift the arm of the ZIF socket until it is at 90 degree angle pointing away from the
motherboard. Be very careful not to damage any components that might be next the socket.
1
2
3

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There are two beveled corners on the CPU, which will match the two angled corners on the
socket. Careful install the CPU by lining both Pin 1 on the CPU and Pin 1 on the socket, making
sure the pins actually fit into the socket. Do not force the CPU into the socket: check the pin
alignment of the CPU pins to socket holes.
Push down lightly on the CPU while lowering the arm on the socket to secure the CPU (see right).
A squeaking noise may be heard while lowering the arm or the socket may make a ‘click’ noise
when the arm is locked into position: these noises are normal.
Installing the Cooling Fans
After a CPU has been installed, you will need to install the proper cooling device for the CPU. This
device, a heatsink/fan combination can be purchased at many computer retail stores. Installation
of the cooling device may vary depending on the fan manufacturer’s design. You should also take
space into consideration when installing a cooling device: make sure the cooling device is not too
big, or else you may end up damaging components around the CPU socket.
The Trinity i845 ships with a special Heatsink retention bracket with four prongs that plug
directly into the four holes around the CPU socket. Once the bracket fully inserted, press
down the white into the bracket to fully secure the bracket onto the board. Then you may
proceed to installing the heatsink/fan.
Tyan highly recommends that you use a thin
layer of some type of thermal compound
(available from many computer retail stores),
between the CPU and the heatsink, to
maximize distribution of heat away from the
CPU. Please use extra caution when installing
any type of clamp-style fan, or else damage
may occur to the CPU socket and or the CPU
itself.
FAN
1
2
3
Ground
+12V
Speed
Specifications
Voltage
12V
Amperage
0.3A
NOTE The FAN connector has a 12V, 0.3A limitation. Tyan takes no responsibility and will
not be held liable for damage related to the misuse of any FAN jumper.