VIA Mainboard 845D-MVT User manual

The 845D-MVT MAINBOARD Page 1
845D
845D845D
845D-
--
-MVT
MVTMVT
MVT
Mainboard
MainboardMainboard
Mainboard
SOCKET 478 DDR Micro-ATX
Mainboard
Version 1.x
UM-845D-MVT-E1
Rev 1.0V
Creation Date: 27 November 2002

The 845D-MVT MAINBOARD
Page 2





        

   
           



 !""
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
##$%&$' ()  ' (*  
#+,-.
,-!
-!$,&


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
/
!#
!0
!&,%1
!&2.
!&%0+%

,



,3
4

User’s Notice

The 845D-MVT MAINBOARD Page 3



 !"#$

 
%&'()*'
 ('+,-&'
 !"! 
# 
!('+./
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
01"/+$
.'-1'
%.'()' 
 23+)'(' 
#%&'"
!(
'&# 
)*'  
!.'
+,,!-&.
'! .!#&.
&'"+/' (,,!+&+&.
)0' (,,!&.
1231-424)56&.
&4#57)"04#5&.
8+)(&.
9" :7" :7&. 8
4('+0'"'9
'1;'272%%< (, .&. 9
;&.9
= ;=:(&. 9
5()1"'
8 ,-&. 
8+''
Table Of Contents

The 845D-MVT MAINBOARD
Page 4
'
9' 7>!&.
9' 7(&. 
9 '7'
9''&.$
9" :('?$
9*)7##'&.$
6+)(/'
@';>!7('1=425
@';&&2 
@';&'


%78"0.((()2
%
%%((()
% 0.(&'
%!-)'&'8
%4./)-'
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Table Of Contents

The 845D-MVT MAINBOARD Page 5
Introduction
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
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
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(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16) (17)
(18)
(19)
(20)
(21)
(22)
(1) (2) IDE1,IDE2 Connectors. page 14 (12) PCI1,PCI2,PCI3 page 13
(3) AGP Slot. page 14 (13) (14) CD-IN, AUX-IN page 16
(4) PW, HL, RS. page 18 (15) FAN2 page 15
(5) PWRLED, SPKR. page 19 (16) Front Audio Connector page 16
(6) FAN3. page 15 (17) PC99 ATX connectors page 19
(7) Clear Password. page 21 (18) Power Supply Connectors page 15
(8) Clear CMOS. page 21 (19) KB/MS PWR-ON page 21
(9) USB3, USB4. page 17 (20) FAN1 page 15
(10) WOL Connector. page 16 (21) CPU Socket page 12
(11) FDD Connector. page 14 (22) DIMM1, DIMM2 page 13

The 845D-MVT MAINBOARD
Page 6
1.2.1. The 845D-MVT Mainboard
The 845D-MVT mainboard is a Pentium™ 4 DDR platform. It supports a maxi-
mum memory of 2GB and comes with 4 USB (vesion 1.1) ports. Onboard it
has three PCI slots, one 1x/2x/4x AGP slot (which only supports 1.5V AGP
cards), and an Onboard Audio (AC’97 2 channels). It also comes with three
fan connectors (for additional thermal protection) and three power supply con-
nectors. It also has a WOL (Wake-On-Lan) connector that enables it to be
“woken up” from a soft-off power state when it receives a signal from the LAN.
Other onboard connectors include Aux-IN and CD-IN connectors.
1.2.2. Mainboard Dimensions
Width 244 mm
Length 215 mm
1.2.3. Environmental Limitations
Operating Temperature: 10°C to 40°C (50°F to 104°F)
Required Airflow: 50 linear feet per minute across the CPU
Storage Temperature: -40°C to 70°C (-40°F to 158°F)
Humidity: 0 to 90% non-condensing
Altitude: 0 to 10 000 feet
Introduction

PC99 ATX Connectors
CN2: PS2 Mouse
CN1: PS2 Keyboard
CN5: LPT CN18: Game/Midi
CN7: USB2
CN6: USB1 CN4: COM2
CN3: COM1 SPK OUT
LINE IN
MIC
Processor
The mainboard supports Socket 478 Intel®PentiumTM4 and CeleronTM CPUs.
Chipset
Northbridge Core Chipset: Intel® RG82845
Southbridge Core Chipset: Intel®FW82801
I/O Chipset
Winbond W83627HF-AW
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The 845D-MVT MAINBOARD Page 7
Introduction
CPU Switching Voltage regulator
This mainboard is equipped with a switching voltage regulator that automati-
cally detects a DC power supply from +1.10V to +1.85V.
System Memory
The mainboard uses Double Data Rate Dual Inline Memory Modules (DDR
DIMM). It has two 184-pin DIMM sockets. These sockets support 2.5V (power
level) single-sided or double sided PC1600 (DDR200) or PC2100 (DDR266)
DDR DIMM modules. The maximum memory supported by the mainboard is 2
GB.
Note: The system memory supports 64 Mb, 128 Mb, 256 Mb and 512 Mb tech-
nologies for x8 and x16 devices. (Double-sided x16 devices are not supported)
Expansion Slots
The mainboard is equipped with three dedicated PCI slots and one 1x/2x/4x
AGP slot (which only supports 1.5V AGP cards).
Onboard Audio Features
Supports Microsoft DirectSound/DirectSound 3D and AC97 Full Duplex.
Word Size
!Data Path: 8-bit, 16-bit, 32-bit, 64-bit
!Address Path: 32-bit
Front Side Bus Frequency (FSB)
P4 Socket 478 CPU at 400 MHz PSB (Processor System Bus) (100 MHz QDR) is
supported.
BIOS
!Award BIOS, Windows 95/98 Plug and Play (PnP) compatible.
!Supports SCSI sequential boot-up.
!Flash EPROM for easy BIOS upgrades.
!Supports DMI 2.0 function
Desktop Management Interface (DMI)
The mainboard comes with DMI 2.0 built into the BIOS. The DMI utility in the
BIOS will automatically record different information about your system
configuration and store this information in the DMI pool, which is a part of the
system board's Plug and Play BIOS. DMI, along with the appropriately
networked software, is designed for easy inventory, maintenance and the
simplified troubleshooting of computer systems.
WOL (Wake-On-LAN) Port
One WOL connector supports Wake-On-LAN functionality.

The 845D-MVT MAINBOARD
Page 8
Introduction
USB Ports
USB allows data exchange between your computer and a wide range of
simultaneously accessible external Plug and Play peripherals. The 845D-MVT
mainboard is equipped with four USB connectors. USB 1 and USB 2 are
external connectors. They can be found on the PC 99 ATX connector. The other
USB connectors are internal connectors and can be used to connect other USB
devices. (Cables for the internal connectors are sold separately).
Note: The internal USB connectors (CN30 and CN31) are non-standard. When
you purchase the cable please ensure that the connector on one side of the
cable is compatible with the internal USB connector and the connector on the
other side of the cable is a standard USB connector.

Connectors
!Two IDE connectors
!One floppy drive interface supports up to two 2.88 MB floppy drives
!One 20-pin ATX power supply connector
!One 4-pin (2x2) 12V ATX power supply connector
!One 4-pin (1x4) ATX Auxiliary power supply connector
!One CPU fan and two Chassis fan connectors
!One CD audio in connector
!One AUX-IN connector
!One front audio connector
!One WOL (Wake-On-LAN) connector
!One 4 CH OUT Connector (Optional)
ATX Double Deck Ports (PC99 color-coded connectors)
!Two USB ports
!Two external DB-9 serial port connector: COM1 and COM2 (UART)
!One VGA connector
!One SPP/ECP/EPP DB-25 parallel port
!One mini-DIN-6 PS/2 mouse port
!One mini-DIN-6 PS/2 keyboard port
!One GAME/MIDI port
!Three audio jacks: SPK-OUT, LINE-IN and MIC-IN
PCI Bus Master IDE Controller
!Two PCI IDE interfaces support up to four IDE devices.
!Supports ATA/33, ATA/66 and ATA/100 hard drives.
!PIO Mode 3 and Mode 4 Enhanced IDE (data transfer rate up to 16.6
MB/sec.).
!Bus mastering reduces CPU utilization during disk transfer.
!Supports ATAPI CD-ROM, LS-120 and ZIP.

The 845D-MVT MAINBOARD Page 9
Introduction
The mainboard is capable of monitoring the following health conditions of your
system:
1. Processor temperature. It has an overheat alarm.
2. VCORE/3.3V/5V/12V/-12V voltages and failure alarm.
3. Processor and chassis fan speeds. It has a failure alarm for these fans.
4. Read back capability that displays temperature, voltage and fan speed.
1.4.1. Hardware Monitoring System Utility
The mainboard comes with the Hardware Monitoring System utility contained
on the CD. It is capable of monitoring the systems hardware conditions such
as the temperature of the processor, voltage, and the speed of both the CPU
and chassis fans. You are allowed to manually set a range to the items being
monitored. We recommend that you use the Default Settings, which are the
ideal settings that will maintain the system in a good working condition.
1.4.2. Installation
To install this utility, please insert the CD into the CD-ROM drive. The auto run
screen (Driver Utility) will automatically appear. Click the Hardware Monitoring
button, choose the chipset, model number and the OS that is installed. Please
refer to the CD “Readme” file for further installation instructions.
Note: Only use this utility in Windows operating systems.
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Dual Function Power Button
Depending on the setting in the Soft-Off By Power-Button field of the Power
Management Setup, this switch allows the system to enter the Soft-Off or
Suspend mode.
RTC Timer to Power-on the System
The RTC installed on the system board allows your system to automatically
power-on at a set date and time.
Wake-On-LAN Ready
The Wake-On-LAN function allows the network to remotely wake up a Soft
Power Down (Soft-Off) PC. Your LAN card must support the remote wakeup
function. The 5V SB power source of your power supply must be at least
720mA.
ACPI Ready
The mainboard is designed to meet the ACPI (Advanced Configuration and
Power Interface) specification. ACPI has energy saving features that support
OS Direct Power Management (OSPM) for round the clock PC operation.
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The 845D-MVT MAINBOARD
Page 10
Hardware Installation
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