Athlon VIA KT333 User manual

AA280
VIA® KT333 Motherboard
USER’S MANUAL
Athlon® Processor Motherboard
Rev. 1.0A

AA280 Motherboard

AA280 Motherboard
Revision History
Revision Date Description
1.0A Revised version of AA280 motherboard user’s
manual
Item Checklist
1 AA280 Motherboard
1 Floppy Cable
1 ATA Cable 66/100
1 I/O Shield
1 Heatsink Retention Module
1 CD for Motherboard Driver
1 AA280 Quick Installation Guide
1 AA280 User Manual
Athlon® is a registered trademark of AMD.
Copyright © 2002, Lite-On Tech./System BU

AA280 Motherboard

AA280 Motherboard
Safety Instructions
Follow these precautions when operating your computer.
1. Always unplug the power cord when inserting any add-on card or
module inside the system.
2. Wear a grounding strap attached to a grounded device to avoid
damage from static electricity. If one is not available, discharge
static electricity by touching the metal case of a safely grounded
object before working on the motherboard.
3. Place components on a level grounded antistatic pad or on the
packaging that came with the components whenever the compo-
nents are separated from the system.
4. Keep equipment away from moisture and humidity.
5. Hold all circuit boards by the edges. Do not bend circuit boards.
6. Keep this User’s Manual for future reference.

AA280 Motherboard
Table of Contents
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Motherboard Specifications ........................................................................1
AA280 Motherboard Layout........................................................................5
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Installing the Central Process Unit (CPU)...................................................7
Installing Memory Modules .........................................................................9
Connecting IDE and Floppy Disk Cables..................................................11
Connecting Floppy and IDE Drives...........................................................12
Installing Expansion Cards .......................................................................14
Connecting the Power Supply Cables ......................................................15
Jumper Introduction ..................................................................................19
Case Components ....................................................................................21
Connecting Optional Devices ...................................................................22
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4
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Entering the Setup Utility ..........................................................................24
The Main Menu .........................................................................................24
Standard CMOS Features Setup..............................................................25
Advanced BIOS Features Setup...............................................................26
Advanced Chipset Features Option..........................................................29
Integrated Peripherals Option...................................................................35
Power Management Setup Option............................................................40
PNP/PCI Configuration Option .................................................................44
PC Health Status Option...........................................................................47
Frequency/Voltage Control .......................................................................48
Load Fail-Safe Defaults Option.................................................................49
Load Optimized Defaults Option...............................................................49
Set Password Option ................................................................................50

AA280 Motherboard
Save & Exit Setup Option .........................................................................51
Exit Without Saving...................................................................................51

AA280 Motherboard

AA280 Motherboard
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Motherboard Specifications
Form Factor:
• Standard ATX 305 x 244 mm
Processor:
• Supports single AMDAthlonprocessor
• Processor Socket A
• 100/133 MHz system bus
Cache Memory:
• Processor integrated level-1 and level-2 cache
System Memory:
• Three 184-pin DIMM sockets (90 degree, tin plated contact)
• Supports DDR (Double Data Rate) SDRAM at 200/266/333 MHz
• Supports 64/128/256/512 MB and 1 GB SDRAM devices
• Accommodates up to 3 GB memory
• Supports Suspend-to-RAM (STR) sleep state (ACPI S3)
NOTE: The motherboard only accommodates 2 DDR SDRAM
333 MHz memory modules.
PCI bus:
• PCI 2.2 compliant
• PME# and 3.3V aux signals support power management

AA280 Motherboard
2
Onboard EIDE:
• Two PCI IDE ports support up to four devices
• Supports Ultra-DMA 33/66/100/133, PIO up to mode 4
Core Logic Chipset:
• Supports Socket A AMD Athlon processors
• Supports DDR100/133/166 Mb/sec
• V-link Southbridge chip provides support for UltraDMA-33/66/100
EIDE, four USB ports, 10/100 Fast Ethernet LAN controller,
AC97/MC97 link, LPC, SMBus, and Power Management
• Supports separately powered 3.3V (5V tolerant) interface to sys-
tem memory and AGP
• Modular power management and clock control for advanced sys-
tem power management
• AGP controller is compliant with AGP specification v2.0
• AGP controller has support for Windows 95 OSR-2 VXD and an
integrated Windows 2000/98 miniport driver
• Advanced DDR DRAM controller supports DRAM interface syn-
chronous with host CPU (100/133MHz) for most flexible
configuration
• DRAM controller allows DRAM interface to be faster than CPU
by 33 MHz to allow use of 166 MHz memory with 133 MHz FSB
and allows DRAM interface to be slower than CPU by 33 MHz to
allow use of 100 MHz memory with 133 MHz FSB
• DDR DRAM controller permits concurrent CPU, AGP, and V-link
access
• 1.8V core with mixed 1.2, 1.5, 1.8, 2.5 and 3.3 volt I/O CMOS
technology
• Complies with PCI 2.2 specification
• Supports PIO mode 0 ~ 4 and Ultra DMA 33/66/100/133
• Fast Ethernet MAC Controller
• Complies with IEEE 802.3 and 802.3x standard
• Supports full-duplex 10base-T, 100base-Tx, 1 MB/s and 10
MB/s Home Networking

AA280 Motherboard
3
Audio:
• Complies with AC ‘97 v2.2 specification
• 18-bit stereo full-duplex CODEC with independent and variable
sampling rate
• Three Mini-DIN audio jacks (line-out, line-in, and mic-in)
• Two audio headers, locking type: CD-in, Aux-in
Onboard LAN (optional)
• LAN Chip: RTL8100B
• Integrated Fast Ethernet MAC chip and transceiver in one chip
• 10 Mbps and 100 Mbps operation
• PCI local bus single-chip Fast Ethernet controller
• Complies with PCI Revision 2.2
• Supports ACPI, PCI power management
• Complies with PC99 standard
• Supports Wake-On-LAN function and remote wake-up
• Supports auxiliary power-on internal reset
• Half/full-duplex capability
RAID (Optional)
• Supports Ultra ATA/100 drives and backward compatible with
Ultra ATA/66/33 & EIDE drives
• Supports UDMA 5/4/3/2/1/0, DMA 2/1/0, PIO 4/3/2/1/0 modes
• Two independent IDE channels support up to four
UDMA/100/66/33 or EIDE drives
• Offers double sustained data transfer rate of attached drive
(RAID 0, RAID 1)
• Intelligent DMA Engine supports DMA disk drives with bus mas-
tering
Expansion Slots:
• One AGP Slot (2X/4X mode)
• Five PCI Slots (including 1 shared PCI/CNR slot)

AA280 Motherboard
4
BIOS:
• Plug & Play BIOS (Award)
• ACPI v2.0 – WfM 2.0 – SMBIOS v2.3 – DMI v2.1 – PC2001
• Auto detect for: CPU Speed – AGP 4X – ATA-100
• Wake-on PS/2 (KB, Mouse) & USB devices
• Rapid Boot support
• WOL, ASF support
• Power management: ACPI S3, S4 support
Onboard I/O:
• Low Pin Count (LPC) 3.3V interface
• Two serial ports – DB9 (16550 UART)
• One parallel port – DB25 with ECP/EPP support
• One PS/2 mouse connector
• One PS/2 keyboard connector
• Two PWM fan controlled output headers
• Four USB Ports: 2 ports on back panel, 2 ports via motherboard
2X5 header for front panel
• One game port
• One RJ-45 LAN port
NOTE: The RJ-45 LAN port is only present when the mother-
board has the optional onboard LAN.
Additional Features:
• Thermal sensor & CPU monitoring
• NIC with integrated MBA boot (complete WOL support)
• BIOS recovery & Boot-Block overwrite via jumper
• Hardware Monitor Capability (SMsC LPC47M15x/LPC47M192)
Other:
• Front panel I/O 2X7 header, key pin 7
• Onboard buzzer

AA280 Motherboard
5
AA280 Motherboard Layout
L
FD
C
K
B
A
G
J
I
E
H
A CPU Fan Connector G Expansion Slots
B CPU Socket H CNR Slot
C Memory Sockets I AGP Slot
D IDE Connectors J Audio Connector
E Floppy Connector K Power Supply Connector
F Front Panel Connectors L Back Panel Connectors

AA280 Motherboard
6
USB and Front Panel Connector Pin Definition
PANEL1
Pin Signal Name Pin Signal Name
1 HD_LED_P 2 PWR_SLP
3 HD_LED_N 4 PWR_SLP
5 RST_SW_N 6 PWR_SW_P
7 RST_SW_P 8 PWR_SW_N
9 RSVD 10 KEY
USB2
Pin Signal Name Pin Signal Name
1 VCC 2 VCC
3 DATA0- 4 DATA1-
5 DATA0+ 6 DATA1+
7 GROUND 8 GROUND
9 KEY 10 OC-
3
1
7
5
9
4
2
8
6
10
3
1
7
5
4
2
8
6
9 10

AA280 Motherboard
7
Chapter 2 Hardware Installation Process
Installing the Central Process Unit (CPU)
CPU Installation
1. Unlock the CPU socket by pulling the locking lever up to a 90-
degree angle.
2. Position the CPU above the socket so that its marked corner (pin1)
matches the corner near the base of the lever.
3. Place the CPU into the socket. (If you cannot insert the CPU easily,
check its orientation and attempt to re-install it.)
Warning! Do not force the CPU into the socket. Doing so will bend
the CPU pins and damage the CPU.
4. Secure the CPU to the socket by lowering the lever and locking the
lever in place.
90-degree angle
Pin1

AA280 Motherboard
8
CPU Heat Sink Installation
1. Read the related CPU heat sink user’s manual for more detailed in-
stallation procedures.
2. Connect the CPU fan power cable to the CPU fan connector on the
motherboard.
CPU fan
power cable
CPU fan
connector
(CPUFAN1)

AA280 Motherboard
9
Installing Memory Modules
1. Push the white retaining clips on the memory socket outwards.
2. Match the notches on the contact edge of the memory module to
the ridge in the memory socket.
3. Insert the memory module vertically into place. When properly in-
serted, the white retaining clips move inward to lock in the module.
4. Repeat the installation process to add additional modules.
Retaining Clip

AA280 Motherboard
10
Total Memory Sizes with Unbuffered SDRAM DIMM
DIMM Type 1 DIMMx64/x72 2 DIMMsx64/x72 3 DIMMsx64/x72
64 Mbit
(2Mx8x4 banks)
128 MBytes 256 MBytes 384 MBytes
64 Mbit
(1Mx16x4 banks)
64 MBytes 128 MBytes 192 MBytes
128 Mbit
(4Mx8x4 banks)
256 MBytes 512 MBytes 786 MBytes
128 Mbit
(2Mx16x4 banks)
128 MBytes 256 MBytes 384 MBytes
256 Mbit
(8Mx8x4 banks)
512 MBytes 1 GByte 1.5 GBytes
256 Mbit
(4Mx16x4 banks)
256 MBytes 512 MBytes 768 Mbytes
512 Mbit
(16Mx8x4 banks)
1 GByte 2 GBytes 3 GBytes
512 Mbit
(8Mx16x4 banks)
512 MBytes 1 GByte 1.5 GBytes

AA280 Motherboard
11
Connecting IDE and Floppy Disk Cables
Connecting the floppy disk ribbon cable into the motherboard. The side
of the cable with the red stripe needs to be inserted into the Pin1 side of the
floppy disk connector. Pin1 is marked with a white triangle.
Connecting the IDE ribbon cable into the motherboard. The side of the
cable with the red stripe should be inserted into the Pin1 side of the IDE
connector. Pin1 is marked with a white triangle.
Note: The motherboard has two IDE connectors. You can connect
the IDE devices to either of these connectors.
Red Stripe
to Pin1
Floppy
Connector
(FDD1)
Red Stripe to
Pin1
IDE
Connectors
(IDE1/IDE2)

AA280 Motherboard
12
Connecting Floppy and IDE Drives
Follow these instructions to connect a floppy disk drive (FDD) and IDE drive
to your motherboard.
Floppy Disk Drive
1. Mount the drive into the case.
2. Connect the floppy disk ribbon cable and power cable to the FDD.
3. Connect the FDD ribbon cable to the motherboard FDD connector
FLOPPY1 (refer to the previous section “Connecting IDE and
Floppy Disk Cables”).
Powe
r
Cable
Floppy Disk
Ribbon Cable