Intel LGA775 User manual

MB893
Socket LGA775 Pentium®4
Intel®i915GV Chipset
Server Motherboard
USER’S MANUAL
Version 1.0

ii MB893 User’s Manual
Acknowledgments
Award is a registered trademark of Award Software International,
Inc.
PS/2 is a trademark of International Business Machines
Corporation.
Intel and Pentium 4 are registered trademarks of Intel
Corporation.
Microsoft Windows is a registered trademark of Microsoft
Corporation.
Winbond is a registered trademark of Winbond Electronics
Corporation.
All other product names or trademarks are properties of their
respective owners.

MB893 User’s Manual iii
Table of Contents
Introduction.......................................................1
Checklist..............................................................................1
Product Description.............................................................2
Specifications......................................................................3
Board Dimensions...............................................................4
Installations.......................................................5
Installing the CPU...............................................................6
ATX Power Installation ......................................................7
Installing the Memory.........................................................7
Setting the Jumpers .............................................................8
Connectors on MB893 ......................................................12
Watchdog Timer Configuration........................................21
BIOS Setup.......................................................25
Drivers Installation......................................49
Intel 915G Chipset Software Intallation Utility................50
Intel 915G Chipset Graphics Driver..................................51
Marvell 88E8053 LAN Drivers Installation......................52
Intel PRO LAN Drivers Installation..................................53
Appendix...........................................................55
A. I/O Port Address Map...................................................55
B. Interrupt Request Lines (IRQ)......................................56

iv MB893 User’s Manual
The MB893 Server Motherboard

INTRODUCTION
MB893 User’s Manual 1
Introduction
Checklist
Your MB893 Pentium®4 motherboard package should include the items
listed below:
•The MB893 motherboard
•This User’s Manual
•1 IDE cable (40 pin 2.54mm) (optional)
•1 IDE cable (44 pin 2.0mm) (optional)
•2 SATA cable (optional)
•ID370 front side bridge board (optional)
•IP320 backplane bridge board (optional)
•1 CD containing the following: (optional)
•Chipset Drivers
•Flash Memory Utility

INSTALLATIONS
2 MB893 User’s Manual
Product Description
The MB893 LGA 775 Pentium®4 motherboard incorporates the Intel®
i915GV chipset that can utilize a single LGA775 processor of up to
3.8GHz or higher and supports FSB frequency of 533/800MHz
(133MHz, and 200MHz HCLK respectively).
The i915GV chipset is designed for use with the Pentium®4 processor
with 1M Level 2 (CPU integrated) cache. The integrated MCH
component provides the CPU interface, DDR interface and Hub
Interface.
Four DDR memory sockets supports DDR 400/333 SDRAM DIMM
modules of up to 4GB in capacity.
The board is designed with four Marvell 88E8053 PCI Express Gigabit
LAN single controllers and two Intel®82541PI PCI Gigabit LAN single
controllers. ICH6 supports only one primary IDE interface for UDMA
33/66/100 .Two Serial ATA connectors offer 1.5 Gigabits/sec data
throughput speed - faster than the most advanced parallel ATA.
On board expansion is provided by one Mini PCI socket. Additional
expansion is provided by two PCI slot if the board is used with the IP320
backplane bridge board. Other advanced features include two USB 2.0
ports…etc. Dimensions of the board are 12.6” by 7.2”.

INTRODUCTION
MB893 User’s Manual 3
Specifications
Product Name MB893
CPU Support Intel®Pentium®4
CPU Voltage 0.8375V~1.6V (VRD 10.1)
System Speed Up to 3.8GHz+
CPU Operating
Frequency 533MHz / 800MHz
Green /APM APM1.2
CPU Socket LGA 775
Chipset
Intel®Grantsdale Chipset
MCH: i915GV FC-BGA+ ICH6 mBGA
FWH
BIOS Award BIOS; Supports ACPI
Cache 1M Level 2 (CPU integrated)
VGA Grantsdale built-in, supports CRT by 2x6 pin header
Gigabit LAN Intel 82541 Gigabit controllers with RJ-45 interface
x 2 (PCI-32)
Marvell 8053 Gigabit controllers with RJ-45 interface
x 4 (PCI Express x 1)
CN7 &CN10 LAN Port support hardware by-pass
Memory Type
Dual Channel memory architecture 4 x 184-pin DIMM sockets support
unbufferred non-ECC 400/333 MHz DDR
memory modules. Max. 4GB DDR 333/400
LPC I/O W83627HF: COM1, 2(RS232),
Secondary Super I/O Fintek F81216, supports COM3
RTC/CMOS Built in ICH6
Battery Lithium battery
IDE The ICH6 supports only one primary IDE interface
and can be either IDE1 (40-pin/2.5mm pitch) or IDE2
(44-pin/2.0mm pitch)
Serial ATA Connector Two SATA ports
RJ45 Connectors Six RJ-45
USB Connectors ICH6 built in USB Version 2.0, support 4 ports
(D-type CN. x 2 port & pin header x 2 port)
COM Connectors 3 ports (D-type CN. x 1 port & pin header x 2 port)
Power Connector ATX 24-pin
Expansion Slots 1 x Mini PCI socket
Backplane Bridge Board With PCI BUS Gold finger (PICMG REV: 2.0 Spec.)
connect to Backplane bridge board IP320
32bit/33MHz PCI-32 slots x 2
Front Side Bridge Board With 40 pin 2mm connector to connect ID370
Front side bridge board
LAN bypass Function PCI Express Gigabit CN7, 10 RJ45 support Relay
Switch by pass function.
Watchdog Timer Supports 256 segments (0,1,2…255. sec/min)
System Voltages +5V, +12V, -12V, 5VSB, -5V, 3.3V
Hardware Monitoring Voltage, Temperature, Smart fan
Board Size 12.6” x 7.2”(318 mm x 183mm)

INSTALLATIONS
4 MB893 User’s Manual
Board Dimensions

INSTALLATIONS
MB893 User’s Manual 5
Installations
This section provides information on how to use the jumpers and
connectors on the MB893 in order to set up a workable system. The
topics covered are:
Installing the CPU ................................................................................. 6
ATX Power Installation......................................................................... 7
Installing the Memory ........................................................................... 7
Setting the Jumpers................................................................................ 8
Connectors on MB893......................................................................... 12
Watchdog Timer Configuration........................................................... 21

INSTALLATIONS
6 MB893 User’s Manual
Installing the CPU
The MB893 motherboard supports an LGA 775 processor socket for
Intel® Pentium® 4 processors.
The LGA 775 processor socket comes with a lever to secure the
processor. Refer to the pictures below, from left to right, on how to place
the processor into the CPU socket. Please note that the cover of the
LGA775 socket must always be installed during transport to avoid
damage to the socket.

INSTALLATIONS
MB893 User’s Manual 7
ATX Power Installation
The system power is provided to the motherboard with the ATX1 and
ATX_12V1 power connectors. ATX1 is a 24-pin power connector and
ATX_12V1 is an 8-pin 12V power connector.
Note: The power supply 5VSB voltage must be at least 2A.
Installing the Memory
The MB893 motherboard supports four DDR memory sockets for a
maximum total memory of 4GB in DDR memory type. It supports
DDR333 when installed with CPUs that have clock speeds of 533MHz.
It supports DDR400 when installed with CPUs that have clock speeds of
800MHz. The board provides dual channel functionality for its DIMM
slots. DIMM1, 2 is for one channel and DIMM3, 4 is for another
channel.
Basically, the system memory interface has the following features:
Supports two 64-bit wide DDR data channels
Available bandwidth of up to 3.2GB/s (DDR400) for single-channel
mode and 6.4GB/s (DDR400) in dual-channel mode
Supports 128Mb, 256Mb, 512Mb and 1Gb DDR technologies
Supports only x8, x16, DDR devices with four banks
Registered DIMMs not supported
Supports opportunistic refresh
Up to 16 simultaneously open pages (four per row, four rows
maximum)

INSTALLATIONS
8 MB893 User’s Manual
Setting the Jumpers
Jumpers are used on MB893 to select various settings and features
according to your needs and applications. Contact your supplier if you
have doubts about the best configuration for your needs. The following
lists the connectors on MB893 and their respective functions.
Jumper Locations on MB893..........................................................9
JP2: Compact Flash Master/Slave Select......................................10
JP3: Clear CMOS Contents ..........................................................10
JP4: CN7 & CN10 LAN By-pass Function Setting......................10
JP5: COM2 (J6) Tx/Rx Signal Setting (Reserved).......................10
JP6: Case Open Connector (Reserved).........................................11
JP7: IDE1, IDE2 UDMA Cable Detect Setting............................11

INSTALLATIONS
MB893 User’s Manual 9
Jumper Locations on MB893
Jumper Locations on MB893 ...........................................................Page
cJP2: Compact Flash Master/Slave Select........................................ 10
dJP3: Clear CMOS Contents............................................................. 10
eJP4: CN7 & CN10 LAN By-pass Function Setting........................ 10
fJP5: COM2 (J6) Tx/Rx Signal Setting (Reserved)......................... 10
gJP6: Case Open Connector (Reserved)........................................... 11
hJP7: IDE1, IDE2 UDMA Cable Detect Setting.............................. 11

INSTALLATIONS
10 MB893 User’s Manual
JP2: Compact Flash Master/Slave Select
JP2 Setting Compact Flash
Open Slave
Closed Master
JP3: Clear CMOS Contents
JP3 Setting Function
Pin 1-2
Short/Closed Normal
Pin 2-3
Short/Closed Clear CMOS
JP4: CN7 & CN10 LAN By-pass Function Setting
[
JP4 Setting Function
Pin 1-2&3-4
OPEN
System will bypass
LANs upon the
timeout of watchdo
g
timer
Pin 1-2&3-4
Short/Closed
(Default)
System will
reboot upon the
timeout of
watchdog timer.
JP5: COM2 (J6) Tx/Rx Signal Setting (Reserved)
JP5 Setting COM2 (J6)
Pin 1-3&2-4
Short/Closed TTL
Pin 3-5&4-6
Short/Closed
(Default) RS232
Important Note: Should the two jumper clips or the jumper itself (JP5) be
missing, this means that the default setting is fixed as RS232.

INSTALLATIONS
MB893 User’s Manual 11
JP6: Case Open Connector (Reserved)
JP7: IDE1, IDE2 UDMA Cable Detect Setting
JP7 Setting Function
Pin 1-2
Short/Closed
(Default) UDMA by cable
detect
Pin 2-3
Short/Closed UDMA33 Only

INSTALLATIONS
12 MB893 User’s Manual
[
Connectors on MB893
The connectors on MB893 allows you to connect external devices such
as keyboard, floppy disk drives, hard disk drives, printers, etc. The
following table lists the connectors on MB893 and their respective
functions.
Connector Locations on MB893..........................................................13
ATX1: ATX Power Supply Connector................................................14
ATX_12V1: ATX 12V Power Connector...........................................14
DIMM1,3: Channel A1, B1 DDR Socket............................................14
DIMM2,4: Channel A2, B2 DDR Socket............................................14
CPU_FAN1/2/3: CPU Fan Power Connectors....................................14
SYS_FAN1: System Fan Power Connector ........................................15
CN1: Front Side Bridge Board to ID370.............................................15
CN2/3/5/6/7/10: Gigabit LAN RJ45 Connectors.................................15
CN4: Mini PCI Socket.........................................................................16
CN8, CN9: SATA Connector..............................................................16
CN11: Dual Port USB Connector........................................................16
CN12: COM1 Connector.....................................................................17
CN13: Slim Type II Compact Flash Connector...................................17
J1: PICMG 2.0 Gold Finger (to IP320) ...............................................17
J2: VGA CRT Connector.....................................................................17
J3: USB Connector ..............................................................................17
J4: Parallel Port Connector (Reserved)................................................18
J5, J6: COM2, COM3 Connectors.......................................................18
J8: PS/2 Keyboard & Mouse Connectors ............................................18
FDD1: Floppy Drive Connector (Reserved)........................................19
IDE1: Primary IDE Connectors (40-pin 2.54mm)...............................19
IDE2: Primary IDE Connectors (44-pin 2.0mm).................................20

INSTALLATIONS
MB893 User’s Manual 13
Connector Locations on MB893
Connector Locations on MB893 ...............................................Page
cATX1: ATX Power Supply Connector ............................................... 14
dATX_12V1: ATX 12V Power Connector........................................... 14
eDIMM1,3: Channel A1,B1 DDR Socket............................................. 14
fDIMM2,4: Channel A2,B2 DDR Socket............................................. 14
gCPU_FAN1/2/3: CPU Fan Power Connectors................................... 14
hSYS_FAN1: System Fan Power Connector ........................................ 15
iCN1: Front Side Bridge Board to ID370............................................. 15
jCN2/3/5/6/7/10: Gigabit LAN RJ45 Connectors................................. 15
kCN4: Mini PCI Socket ........................................................................ 16
○10 CN8, CN9: SATA Connector ............................................................. 16
○11 CN11: Dual Port USB Connector....................................................... 16
○12 CN12: COM1 Connector.................................................................... 17
○13 CN13: Slim Type II Compact Flash Connector.................................. 17
○14 J1: PICMG 2.0 Gold Finger (to IP320)............................................... 17
○15 J2: VGA CRT Connector.................................................................... 17
○16 J3: USB Connector ............................................................................. 17
○17 J4: Parallel Port Connector (Reserved)............................................... 18
○18 J5, J6: COM2, COM3 Connectors...................................................... 18
○19 J8: PS/2 Keyboard & Mouse Connectors............................................ 18
○20 FDD1: Floppy Drive Connector (Reserved)....................................... 19
○21 IDE1: Primary IDE Connectors (40-pin 2.54mm).............................. 19
○22 IDE2: Primary IDE Connectors (44-pin 2.0mm)................................ 20

INSTALLATIONS
14 MB893 User’s Manual
ATX1: ATX Power Supply Connector
Signal Name Pin # Pin # Signal Name
3.3V 13 1 3.3V
-12V 14 2 3.3V
Ground 15 3 Ground
PS-ON 16 4 +5V
Ground 17 5 Ground
Ground 18 6 +5V
Ground 19 7 Ground
-5V 20 8 Power good
+5V 21 9 5VSB
+5V 22 10 +12V
+5V 23 11 +12V
Ground 24 12 +3.3V
ATX1 is a 24-pin ATX power supply connector.
ATX_12V1: ATX 12V Power Connector
This connector supplies the CPU operation voltage
Pin # Signal Name
1,2,3,4 Ground
5,6,7,8 +12V
DIMM1, 3: Channel A1, B1 DDR Socket(Green)
DIMM1 is the channel-A first DDR socket.
DIMM3 is the channel-B first DDR socket.
DIMM2, 4: Channel A2, B2 DDR Socket (Purple)
DIMM2 is the channel-A second DDR socket.
DIMM4 is the channel-B second DDR socket.
[
NOTE: Recommended DIMM modules must be of the same vendor type and
size
CPU_FAN1/2/3: CPU Fan Power Connectors
Pin # Signal Name
1 Ground
2 +12V
3 Rotation detection

INSTALLATIONS
MB893 User’s Manual 15
SYS_FAN1: System Fan Power Connector
Pin # Signal Name
1 Ground
2 +12V
3 Rotation detection
CN1: Front Side Bridge Board to ID370
Signal Name Pin # Pin # Signal Name
PWR-SW 1 2 5VSB
Reset-SW 3 4 Ground
Speak 5 6 VCC
VCC 7 8 VCC
Ground 9 10 PULL-UP
HDD LED 11 12 PULL-UP
By-pass LED 13 14 PULL-UP
Ground 15 16 Ground
Ground 17 18 Ground
GPO0 19 20 GPI0
GPO1 21 22 GPI1
GPO2 23 24 GPI2
GPO3 25 26 GPI3
GPO4 27 28 GPI4
GPO5 29 30 GPI5
GPO6 31 32 GPI6
GPO7 33 34 GPI7
VCC 35 36 VCC
GPIO32 37 38 GPI6
GPIO33 39 40 GPI7
GPIO34 41 42 GPI12
VCC3 43 44 VCC3
CN2/3/5/6/7/10: Gigabit LAN RJ45 Connectors
CN2/3/5/6/7/10 are the Gigabit LAN RJ45 connectors on MB893.
CN2/3: Intel 82541 Gigabit controllers (PCI-32)
CN5/6/7/10: Marvell 8053 Gigabit controllers (PCI Express x 1)
CN7/10: Support hardware by-pass

INSTALLATIONS
16 MB893 User’s Manual
CN4: Mini PCI Socket
Pin # Signal Pin # Signal Pin # Signal Pin # Signal
1 NC 2 NC 63 +3.3V 64 FRAME#
3 NC 4 NC 65
CLKRUN# 66 TRDY#
5 NC 6 NC 67 SERR# 68 STOP#
7 NC 8 NC 69 Gnd 70 +3.3V
9 NC 10 NC 71 PERR# 72
DEVSEL#
11 NC 12 NC 73 C/BE[1] 74 Gnd
13 NC 14 NC 75 AD[14] 76 AD[15]
15 GND 16
EX_INTC# 77 GND 78 AD[13]
17 INTB# 18 +5V 79 AD[12] 80 AD[11]
19 +3.3V 20 INTA# 81 AD[10] 82 GND
21 NC 22 NC 83 GND 84 AD[9]
23 GND 24 +3.3VS 85 AD[8] 86 C/BE[0]
25 CLK 26 RESET# 87 AD[7] 88 +3.3V
27 GND 28 +3.3V 89 +3.3V 90 AD[6]
29 REQ# 30 GNT# 91 AD[5] 92 AD[4]
31 +3.3V 32 GND 93
EX_GNT# 94 AD[2]
33 AD[31] 34 PME# 95 AD[3] 96 AD[0]
35 AD[29] 36 NC 97 +5V 98 NC
37 GND 38 AD[30] 99 AD[1] 100 NC
39 AD[27] 40 +3.3V 101 GND 102 GND
41 AD[25] 42 AD[28] 103
AC_SYNC 104 GND
43 EX_IDSEL# 44 AD[26] 105
AC_SDIN 106 AC_SDOUT
45 C/BE[3] 46 AD[24] 107
AC_BITCLK 108 NC
47 AD[23] 48 IDSEL# 109 NC 110
AC_RST#
49 GND 50 GND 111 NC 112 NC
51 AD[21] 52 AD[22] 113 GNC 114 GND
53 AD[19] 54 AD[20] 115 NC 116 NC
55 GND 56 PAR 117 GND 118 GND
57 AD[17] 58 AD[18] 119 GND 120 GND
59 C/BE[2] 60 AD[16] 121 NC 122 NC
61 IRDY# 62 GND 123 +5V 124 +3.3VS
CN8, CN9: SATA Connector
The SATA connectors support SATA 150 and use one serial ATA HDD
for each. CN8 is port 1. CN9 is port 2.
CN11: Dual Port USB Connector
CN11 is a USB connector consisting of two ports stacked vertically.
Pin Signal Name
1 Ground
2 USB+
3 USB-
4 Vcc