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MB893 
®
Socket LGA775 Pentium 4  
®
Intel i915GV Chipset 
Server Motherboard 
 
USER’S MANUAL 
Version 1.0 
 
 
                                                                                                                                                                                                                                                                                                                                                                                               
                    
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                              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.     ii MB893 User’s Manual           
                    
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                             Table of Contents  Introduction .......................................................1  Checklist..............................................................................1  Product Description.............................................................2  Specifications ......................................................................3  Board Dimensions...............................................................4  Installations ................................................
                    
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                                The MB893 Server Motherboard    iv MB893 User’s Manual                                                                                                                                                                                                                                                                                                                                                                                                                                                      
                    
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                        INTRODUCTION  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                                    
                    
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                        INSTALLATIONS    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
                    
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                        INTRODUCTION    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 533MHz / 800MHz  Frequency  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
                    
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                        INSTALLATIONS      Board Dimensions    4 MB893 User’s Manual                                                                                                                                                                                                                                                                                                                                                                                                                                                        
                    
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                        INSTALLATIONS    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 t
                    
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                        INSTALLATIONS    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.      6 MB893 User’s Manual                                       
                    
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                        INSTALLATIONS    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 sup
                    
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                        INSTALLATIONS    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 
                    
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                        INSTALLATIONS    Jumper Locations on MB893        Jumper Locations on MB893 ...........................................................Page   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 (Reser
                    
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                        INSTALLATIONS    JP2: Compact Flash Master/Slave Select      JP2 Setting Compact Flash Open Slave    Closed Master       JP3: Clear CMOS Contents      JP3 Setting Function  Pin 1-2  Normal  Short/Closed    Pin 2-3  Clear CMOS  Short/Closed       JP4: CN7 & CN10 LAN By-pass Function Setting  [  JP4 Setting Function   System will bypass Pin 1-2&3-4 LANs upon the  OPEN  timeout of watchdog   timer  Pin 1-2&3-4 System will  Short/Closed  reboot upon the  (Default) timeout of    watchdog timer.    JP
                    
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                        INSTALLATIONS    JP6: Case Open Connector (Reserved)    JP7: IDE1, IDE2 UDMA Cable Detect Setting    JP7 Setting Function  Pin 1-2   UDMA by cable  Short/Closed    detect  (Default)  Pin 2-3  UDMA33 Only  Short/Closed                                      MB893 User’s Manual 11                                                                                                                                                                                                                               
                    
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                        INSTALLATIONS  [    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 .........................
                    
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                        INSTALLATIONS    Connector Locations on MB893          Connector Locations on MB893 ...............................................Page   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 Po
                    
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                        INSTALLATIONS    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,
                    
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                        INSTALLATIONS    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  G
                    
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                        INSTALLATIONS    CN4: Mini PCI Socket    Pin # Signal  Pin # Signal Pin # Signal Pin # Signal  1 NC 2 NC 63 +3.3V 64 FRAME# CLKRUN# 3 NC 4 NC 65 66 TRDY#  5 NC 6 NC 67 SERR# 68 STOP#  7 NC 8 NC 69 Gnd 70 +3.3V  DEVSEL# 9 NC 10 NC 71 PERR# 72  11 NC 12 NC 73 C/BE[1] 74 Gnd  13 NC 14 NC 75 AD[14] 76 AD[15]  EX_INTC# 15 GND 16 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#