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MB890 
®
Intel Pentium M  
  Mini-ITX Motherboard 
 
USER’S MANUAL 
Version 1.1A 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                                          
                    
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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 M 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 MB890 User’s Manual            
                    
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                             Table of Contents  Introduction ....................................................... 1  Product Description ............................................................. 1  Checklist .............................................................................. 2  MB890 Specifications ......................................................... 3  Board Dimensions ............................................................... 4  Installations ...............................................
                    
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                              This page is intentionally left blank.    iv MB890 User’s Manual                                                                                                                                                                                                                                                                                                                                                                                                                                              
                    
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                        INTRODUCTION  Introduction    Product Description    ® The MB890 Mini ITX board incorporates the Intel advanced 855GME Chipset  that contains two core components: the Memory Controller Hub (GMCH) and  ®  ICH4. The GMCH integrates a 400MHz Pentium M processor front side bus  controller, integrated graphics controller hub, integrated LVDS interface, two  digital video out ports multiplexed with an AGP 4x controller, a 200/266/  333MHz DDR-SDRAM controller.     The ICH4 integrates an Ultra ATA 100/
                    
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                        INTRODUCTION     Checklist  Your MB890 package should include the items listed below.   ® • The MB890 Pentium M Mini-ITX motherboard  • This User’s Manual   • 1 CD containing chipset drivers and flash memory utility  • Cable kit (IDE, Power, Audio, VGA CRT)  2 MB890 User’s Manual                                                                                                                                                                                                                            
                    
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                        INTRODUCTION          MB890 Specifications  [  ® ® Micro-FCPGA Intel Pentium M processor  CPU Type  Up to 1.8GHz  System Speed  400 MHz  CPU Frequency  Socket 479  CPU Socket  ® Intel 855GME / 852GM chipset  Chipset  Award BIOS; support ACPI function  BIOS  1MB Level 2 (CPU integrated)  Cache  ® ® Intel 82855GME built-in Intel extreme Graphics 2  VGA  64MB shared with system  ® Intel 82855GME built-in, single- or dual-channel   LVDS  panel support up to UXGA panel  resolution.  Resolution max. u
                    
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                        INTRODUCTION     Board Dimensions    4 MB890 User’s Manual                                                                                                                                                                                                                                                                                                                                                                                                                                                          
                    
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                        INSTALLATIONS  Installations  This section provides information on how to use the jumpers and  connectors on the MB890 in order to set up a workable system. The  topics covered are:    Installing the CPU ............................................................... 6  Installing the Memory ......................................................... 7  Setting the Jumpers ............................................................. 8  Connectors on MB890 .........................................
                    
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                        INSTALLATIONS    Installing the CPU    ® The MB890 board supports a Socket 479 processor socket for Intel  ® ® Pentium M or Celeron M processors.    The processor socket comes with a screw to secure the processor. As  shown in the left picture below, loosen the screw first before inserting  the processor. Place the processor into the socket by making sure the  notch on the corner of the CPU corresponds with the notch on the inside  of the socket. Once the processor has slide into the socket, fas
                    
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                        INSTALLATIONS    Installing the Memory    The MB890 board supports one DDR memory sockets for a maximum  total memory of 1GB in DDR memory type. The memory module  capacities supported are 128MB, 256MB, 512MB and 1GB. The  ® following table lists the supported DDR DIMM configurations. Intel  855GME supports configurations defined in the JEDEC DDR DIMM  specification only. Non-JEDEC standard DIMMs such as double-sided  x16 DDR SDRAM DIMMs are not supported.     Installing and Removing Memory Modu
                    
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                        INSTALLATIONS    Setting the Jumpers    Jumpers are used on MB890 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 MB890 and their respective functions.    Jumper Locations on MB890 .......................................................... 9  JP1: CPU Host Clock.................................................................... 10  JP2:
                    
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                        INSTALLATIONS    Jumper Locations on MB890      Jumpers on MB890 ........................................................................... Page  JP1: CPU Host Clock .......................................................................... 10  JP2: Power Mode Setting .................................................................... 10  JP3: LVDS Power Setting ................................................................... 10  JP4: 1394 Controller EEPROM Write Protect ...................
                    
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                        INSTALLATIONS    JP1: CPU Host Clock     SEL-0 SEL_1 (JP1) SEL_2 Host Clock  1 0 100MHz (default)   1 0 133MHz      JP2: Power Mode Setting    JP2 Power Mode  Simulate ATX Power    Mode (default)  AT Power Mode      JP3: LVDS Power Setting    JP3 LVDS Power  +3.3V (default)    +5V      JP4: 1394 Controller EEPROM Write Protect     JP4 Function  Write Disable   Write Enabled     10 MB890 User’s Manual                                                                                                 
                    
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                        INSTALLATIONS    JP6, JP7, JP8: RS232/422/485 (COM2) Selection  COM1 is fixed for RS-232 use only.  COM2 is selectable for RS232, RS-422 and RS-485.  The following table describes the jumper settings for COM2 selection.     COM2  RS-232 RS-422 RS-485   Function   JP6: JP6: JP6:   3-5 & 4-6 1-3 & 2-4 1-3 & 2-4 Jumper     Setting JP7: JP7: JP7:  (pin closed) 3-5 & 4-6 1-3 & 2-4 1-3 & 2-4       JP8: JP8: JP8:  1-2 3-4 5-6         JP9: COM2 RS232 Pin9 Setting    Pin # Pin #  Signal Name JP9 Signal N
                    
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                        INSTALLATIONS    JP11: Clear CMOS Contents  JP11 Setting Function    Pin 1-2  Normal    Short/Closed    Pin 2-3  Clear CMOS    Short/Closed    JP13: Compact Flash Mode Setting    JP13 CF Mode  Slave    Master      ® J13: Intel 82541GI Gigabit LAN Enable/Disable    J13 Gigabit LAN  Enable    Disable    [    JP14: CPU VCCA Voltage Setting    JP14 Setting Function     Pin 1-2 1.8V    Short/Closed for Banias core     Pin 2-3 1.5V    Short/Closed for Dothan core    SW1: FSB / DDR Setting    SW1 Setti
                    
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                        INSTALLATIONS          Connectors on MB890    The connectors on MB890 allows you to connect external devices such  as keyboard, floppy disk drives, hard disk drives, printers, etc. The  following table lists the connectors on MB890 and their respective  functions.    Connector Locations on MB890 .................................................. 14  CN1: DC Jack for DC Adaptor .................................................... 15  CN2: PS/2 Keyboard and PS/2 Mouse Connectors ..................
                    
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                        INSTALLATIONS    Connector Locations on MB890      Connectors on MB890 ....................................................................................................................................... Page  CN1: DC Jack for DC Adaptor ..............................................................................................................................15  CN2: PS/2 Keyboard and PS/2 Mouse Connectors ....................................................................................
                    
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                        INSTALLATIONS      CN1: DC Jack for DC Adaptor  The DC jack accepts input of 12V or 19V.    CN2: PS/2 Keyboard and PS/2 Mouse Connectors           PS/2 Mouse      PS/2 Keyboard     Signal Name Keyboard Mouse Signal Name Keyboard data 1 1 Mouse data N.C. 2 2 N.C.  GND 3 3 GND  5V 4 4 5V  Keyboard clock 5 5 Mouse clock N.C. 6 6 N.C.    CN3: DVI-I Connector     Signal Name Pin # Pin # Signal Name DATA 2- 1 16 HOT POWER DATA 2+ 2 17 DATA 0-  Shield 2/4 3 18 DATA 0+  DATA 4- 4 19 SHIELD 0/5  DATA 4+ 
                    
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                        INSTALLATIONS                CN4: Parallel Port Connector    Signal Name Pin # Pin # Signal Name Line printer strobe  1 14 AutoFeed  PD0, parallel data 0 2 15 Error  PD1, parallel data 1 3 16 Initialize  PD2, parallel data 2 4 17 Select  PD3, parallel data 3 5 18 Ground  PD4, parallel data 4 6 19 Ground  PD5, parallel data 5 7 20 Ground  PD6, parallel data 6 8 21 Ground  PD7, parallel data 7 9 22 Ground  ACK, acknowledge 10 23 Ground  Busy 11 24 Ground  Paper empty 12 25 Ground  Select 13 N/A N/