LXRLXR
LXR
LXR
A Pentium®®®®® II Processor based AGP motherboard
TRADEMARK
All products and company names are trademarks or
registered trademarks of their respective holders.
These specifications are subject to change without
notice.
Manual Revision 2.3
June 25, 1998
LXR Features:
FeaturesLXR
FEATURES
•LXR is based on the Pentium
on Slot 1. The board is configured by an DIP Switch to match your CPU
clock speed.
®
II Processor operating at 233 ~ 333 MHz
• Designed with Intel’s 82443 LX (or 82443 EX) AGPset.
•Supports up to 256MB of DRAM (minimum of 8 MB) on board
•LXR will support Error Checking and Correcting (ECC) when using
parity DRAM memory modules. This will detect multiple bit errors and correct
1-bit memory errors.
• Supports (2) 16 bit ISA slots, (3) 32 bit PCI slots, (1) AGP slot and provides
(2) independent high performance PCI IDE interfaces capable of supporting
PIO Mode 3/4 and Ultra DMA 33 devices. The LXR supports (3) PCI
Bus Master slots and a jumperless PCI INT# control scheme which reduces
configuration confusion when plugging in PCI card(s).
• Supports ATAPI (e.g. CD-ROM) devices on both Primary and Secondary IDE
interfaces.
• Designed with Winbond W83977TF Multi I/O: (1) floppy port, (1) parallel port
(EPP, ECP), and (2) serial ports (16550 Fast UART).
Note: Japanese “Floppy 3 mode” is also supported
• Features Award Plug & Play BIOS. With Flash Memory you can always
upgrade to the current BIOS as they are released. (http://www.
please visit our Technical Support section for the latest updates)
2themax.com/
•LXR utilizes a Lithium battery which provides environmental protection
and longer battery life.
Page 2
FeaturesLXR
•Supports the Universal Serial Bus (USB) Header. The onboard PIIX4/PIIX4E
chip provides the means for connecting PC peripherals such as; keyboards,
joysticks, telephones, and modems.
•Built-in ATX 20-pin and AT 12-Pin power supply connector.
•Software power-down when using Windows
®
95.
•Supports ring-in feature (remote power-on through external modem,
allows system to be turned on remotely.
•Resume by Alarm - Allows your system to turn on at a preselected time.
•Power Loss Recovery - In the event of a power outage your system will
automatically turn itself back on without user intervention.
• Supports CPU Hardware sleep and SMM (System Management Mode).
• Supports Desktop Management Interface (DMI) facilitating the management
of desktop computers, hardware and software components and peripherals,
whether they are stand-alone systems or linked into networks. (option)
•Built-in WOL (Wake-up On LAN) Connector.
• Built-in SB-Link Connector.
Page 3
Section 3
InstallationLXR
J5
Power Fanr
CPU Cartridge SLOT 1
Page 3-1
INSTALLATION
LXR Detailed Layout
PS/2
Battery
AT Power Input
ON
J4
CPU FAN
USB1
AGP SLOT
Intel
443LX/443EX
PCIset
DIMM 1
DIMM 2
J3
J2
1
RESET
IR CONN.
SPEAKERKEYLOCK
HD/LED
LXR
JP4
1
TB/LED
POWER_ON
Bank 0
Bank 1
Figure 1
PCI Slot #3
J7
WOL
PCI Slot #2
PCI Slot #1
ISA Slot #1
ISA Slot #2
J8
15
SB-Link
Secondary IDE
IDE2IDE1
Flash Memory
for BIOS
J6
Chassis FAN
InstallationLXR
S
Easy Installation Procedure
Easy Installation Procedure
The following must be completed before powering on your new system:
Configure DIP Switch and Jumper to match your hardware
Install memory chips
Device Connectors
Configure DIP Switch
2theMax designs all motherboards with a DIP Switch to make your install fast and easy.
The following will describe all of the DIP Switch that you are required to set before
moving on to step 2.
Note: The DIP Switch as depicted as shown (Figure 1) in their correct
physical orientation.
Page 5
JP4
W1
ON
1234
SW1
1234
ON ON 233
ON ON ON 266
ON ON 300
ON ON 333
CPU
JP4 B us Clock
1-2 68M H z
2-3 75M H z
OPEN 66MHz
InstallationLXR
System Memory Configuration
Memory Layout
The LXR supports (2) 168-pin DIMMs (Dual In-line Memory Module). The
DIMMs can be either EDO (Enhanced Data Out) or SDRAM (Synchronized
DRAM).
• DIMM SDRAM may be 83MHz (12ns), 100MHz (10ns) or
120MHz (8ns) bus speed.
• If you use both 50ns and 60ns memory you must configure
your BIOS to read 60ns.
• When using Synchronous DRAM we recommend using the
4 clock variety over the 2 clock.
• Fast Page Mode DRAM (FPM) is not supported by the LX
(or EX) AGPset. Only EDO and SDRAM are supported.
Figure 2 and T able 1 show several possible memory configurations using both SIMM
and DIMM.
DIM M 1
DIM M 2
Bank 0
Bank 1
Page6
InstallationLXR
yromeMlatoT
BM652=
mumixaM
BM821=
mumixaM
1MMID
)0knaB(
*MARDS/ODE
,BM23,BM61,BM8
1XBM821,BM46
*MARDS/ODE
,BM23,BM61,BM8
1XBM821,BM46
1X
enoN
* SDRAM only supports 8, 16, 32, 64, 128MB DIMM modules.
Table 1
2MMID
)1knaB(
*MARDS/ODE
,BM23,BM61,BM8
BM652,BM821,BM46
Page 7
InstallationLXR
Device Connectors
Please install the motherboard into the chassis.
Now that your motherboard is installed you are ready to connect all your connections
(figure 12).
PS/2 Mouse Conn
COM2
USB
COM1
KB Conn.
LPT
Figure 12
J2: Chassis Panel Connector
• Keylock, Speaker, Reset
J3: Turbo LED, HDD LED, IR Conn., Sleep/Power_ON
J4: CPU Fan Power
• A plug-in for the CPU Fan Power
J5: Power Supply Fan Monitoring
• A plug-in for the Power supply so that BIOS can monitor the RPM’s
J6: Chassis Fan Power
• A plug-in for the chassis Fan Power
J7: WOL Connector
J8: SB-Link Header
PS1: PS2 Mouse Header
USB1: USB Header
IDE1: Primary IDE
IDE2: Secondary IDE
FDD1: Floppy Controller Connector
Page 8
InstallationLXR
Device Connectors (continued)
J2
J3
1
1
1
KeyLock - Keyboard lock switch & Power LED connector
1. Power LED(+) 4. Keylock
2. N/C 5. GND
3. GND
Speaker - Connect to the system's speaker for beeping
1. Speaker 3. GND
2. N/C 4. GND
Reset - Closed to restart system.
IR Connector
1. VCC 4. GND
2. NC 5. IRTX
3. IRRX
IDE LED indicator - LED ON when Onboard PCI IDE Hard disks is
+
activate
Turbo LED indicator - LED ON when higher speed is selected
+
Power On/Off - This is connected to the power button on the case.
Using the Soft-Off by Pwr-BTTN feature, you can choose either
Instant Off (turns system off
hold the button down for 4 seconds before the system turns off). When
the system is in 4 sec delay mode, 2theMax has added a special feature to
make the system go into suspend mode when the button is pressed
momentarily.
immediately), or 4 sec delay (you need to
Page 9
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