CEM831 Series Intel Atom™ COM Express Type-II
Contents
1. 774 831 Series Intel Atom COM Express Type ll Module User s Manual Disclaimers This manual has been carefully checked and believed to contain accurate information Axiomtek Co Ltd assumes no responsibility for any infringements of patents or any third party s rights and any liability arising from such use Axiomtek does not warrant or assume any legal liability or responsibility for the accuracy completeness or usefulness of any information in this document Axiomtek does not make any commitment to update the information in this manual Axiomtek reserves the right to change or revise this document and or product at any time without notice No part of this document may be reproduced stored in a retrieval System or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without the prior written permission of Axiomtek Co Ltd CAUTION If you replace wrong batteries it causes the danger of explosion It is recommended by the manufacturer that you follow the manufacturer s instructions to only replace the same or equivalent type of battery and dispose of used ones Copyright 2010 Axiomtek Co Ltd All Rights Reserved March 2010 Version A1 Printed in Taiwan ESD Precautions Computer boards have integrated circuits sensitive to static electricity To prevent chipsets from electrostatic discharge damage please take care of the follow2. BIOS SETUP UTILITY Advanced PCIPnP Boot Security Chipset Exit System Time v02 61 C Copyright 1985 2006 American Megatrends Inc e System Time Date Use this option to change the system time and date Highlight System Time or System Date using the lt Arrow gt keys Enter new values through the keyboard Press the lt Tab gt key or the lt Arrow gt keys to move between fields The date must be entered in MM DD YY format The time is entered in HH MM SS format 20 AMI BIOS UTILITY CEM831 COM Express Type Il Module User s Manual 4 4 Advanced Menu The Advanced menu allows users to set configuration of the CPU and other system devices You can select any of the items in the left frame of the screen to go to the sub menus CPU Configuration IDE Configuration ACPI Configuration APM Configuration Hardware Health CPU Configuration PCI Express Configuration USB Configuration For items marked with gt please press Enter for more options BIOS SETUP UTILITY Main PCIPnP Boot Security Chipset Exit gt CPU Configuration v02 61 C Copyright 1985 2006 American Megatrends Inc AMI BIOS UTILITY 21 CEM831 Express Module User s Manual e CPU Configuration This screen shows the CPU Configuration and you can change the value of the selected option BIOS SETUP UTILITY Max CPUID Value Limit Disabled v02 61 C Copyright 1985 2006 American Megatrends I
3. GND FIXED End of COM Express Table Board Layout and Pin Assignments 13 CEM831 COM Express Type Il Module User s Manual Chapter3 Hardware Description 3 14 Microprocessors The CEM831 Series supports Intel Atom processor 270 which make your system operated under Windows XP Windows Vista Windows 7 and Linux environments The system performance depends on the microprocessor Make sure your installed microprocessor with all correct settings that prevent the CPU from damages 3 2 BIOS The CEM831 Series uses AMI Plug and Play BIOS with a single 8Mbit SPI Flash DMI Plug and Play 3 3 System Memory The CEM831 Series industrial CPU card supports two 200 pin DDR2 SO DIMM sockets for a maximum memory of 4GB DDR2 SDRAMs Intel 945GME supports DDR2 400 533 up to 4GB the actual maximum capacity will be less depending on system configuration The memory module can come in sizes of 256MB 512MB 1GB and 2GB Hardware Description CEM831 COM Express Module User s Manual 3 4 Port Address Map With CEB94000 under WinXP Will Input output IO 00000000 0000000 Direct memory access controller 00000000 00000 7 PCI bus 00000010 0000001F Motherboard resources 00000020 00000021 Programmable interrupt controller 00000022 0000003F Motherboard resources 00000040 00000043 System timer 00000044 0000005 Motherboard resources gt 00000060 00000060 Standard
4. GPO2 0 GPO3 1 n Write smbus Device Addr 0x41 0x0a printf Please check the GPO level and hit any key to continue getch write GPIO3x data printf Write GPIO3x data is 0x05 n printf GPO0 1 GPO1z0 GPO2 1 GPO3 0 n _write_smbus Device_Addr 0x41 0x05 printf Please check the GPO level and hit any key to continue n getch 48 GPIO amp Witchdog Timer CEM831 COM Express Type Il Module User s Manual set GPIO10 11 12 used printf GPIO Input Test zzz printf Set F75111 GPIO1x is used GPIO function n xchz read smbus Device Addr 0x03 xch amp OxEO Write smbus Device Addr 0x03 xch set Pin GPIO10 11 12 used write smbus Device Addr 0x04 0 set Pin GPIO1x used printf Set F75111 GPIO10 11 12 13 is input function n write smbus Device Addr 0x10 0x00 set GPIO1x input direction printf Set F75111 GPIO10 11 12 13 is Level mode Write smbus Device Addr 0x13 0x00 set GPIO1x Level Control read smbus Device Addr 0x12 read GPIO1x Status printf Read the GPI0 1 2 3 input data is 02X n xch printf Please Change the GPIx input and hit any key to continue n getch read smbus Device Addr 0x12 read GPIO1x Status printf Read the GPI0 1 2 3 input data is 02X n xch printf Please Change the GPIx input and hit any key to continue n getch read smbus Device Addr 0x12 read GPIO1x Status printf Read the GPI0
5. Suspend mode S1 POS v02 61 C Copyright 1985 2006 American Megatrends Inc Suspend Mode This item selects the Advanced Configuration and Power Interface ACPI state for system suspend gt ACPI Version Features Use this item to set the system to be complaint with the ACPI 2 0 specification gt ACPI APIC support This item allows you to enable or disable the Advanced Configuration and Power Interface ACPI support in the Application Specific Integrated Circuit APIC Enabling this item makes the RSDT pointer list include the ACPI APIC table pointer AMI BIOS UTILITY 25 CEM831 COM Express Module User s Manual e Configuration You can use this screen to select options for the APM Configuration and change the value of the selected option A description of the selected item appears on the right side of the screen BIOS SETUP UTILITY Power Management APM Enabled v02 61 C Copyright 1985 2006 American Megatrends Inc gt Power Management APM Set this item to allow Power Management APM support The default setting is Enabled Set this item to prevent the chipset power Disabled management and APM Advanced Power Management features Set this item to allow the chipset power Enabled management and APM Advanced Power i Management features This is the default setting 26 AMI BIOS UTILITY CEM831 COM Express Type Il Module User s Manual Power Button Mode Th
6. 1 2 3 input data is 02X n xch printf WatchDogTimer Test printf Set WDTOUT10 pin used n write smbus Device Addr 0x01 0x20 Pin1 config printf Set WDTOUT10 output 100ms plus normal level n write smbus Device Addr WDTOUT10 CntlReg1 0 WDT10 control printf Set WDTOUT10 Time 10 seconds and enable WDT n write smbus Device Addr WDTOUT10 CntlReg2 0x8A WDT10 control GPIO amp Witchdog Timer 49 CEM831 COM Express Module User s Manual printf Please hit any key in period of 10 seconds in getch write smbus Device Addr WDTOUT10 CntlReg2 0x8A WDT10 control printf The sytsem will reset when the 10 seconds times out n void _write_smbus UCHAR xAddr UCHAR xReg UCHAR xData while 1 if check smbus busy zz0 break outp SM REG xReg xdelay because the CPU too fast delay for IO outp SM ADDR xAddr xdelay because the CPU too fast delay for IO outp SM DATA xData xdelay because the CPU too fast delay for IO outp SM CMD SM byteAccess xdelay because the CPU too fast delay for IO outp SM STATUS 02 clear interrupt status UCHAR read smbus UCHAR xAddr UCHAR xReg UCHAR xch xch2 while 1 if check smbus busy zz0 break outp SM REG xReg xdelay because the CPU too fast delay for IO outp SM ADDR xAddr 1 xdelay because the CPU too fast delay for IO outp
7. A38 USB 6 7 oce B38 usB_4_5_oc c38 PCI 2 038 PCI_ADis A39 USB4 B39 USB5 c39 17 D39 PCI AD20 GND FIXED GND FIXED 1 GND FIXED 041 GND FIXED 42 USB2 B42 USB3 ca2 021 042 AD24 43 USB2 B43 USB3 23 p43 26 USB 2 3 OC USB 0 1 OCK PCI_C BE3 PCI_AD28 use us 66 Potaoas ous Formo e um raros VCC RTC EXCD1_PERST C47 PCI_IRQD 48 EXCDO_PERST B48 EXCD1_CPPE PCI AD31 PCI_CLKRUN 0 SYS PCI IRQA LPC SERIRQ CB PCI IRQB PCI CLK GND FIXED 51 GND FIXED 51 GND FIXED GND FIXED PCIE TXO _TX0 PCIE_TX0 B52 52 PEG D52 PEG_TX0 PCIE TXO PCIE RXO PEG RXO0 PEG TXO sm we oss oss GND ED e60 GND FED ceo FRED peo GND emen L me 051 s face Pore tas ase exo ose oe Peona e een cros Jos nom Jos me PCIE_TX2 PCIE_RX2 RSVD RSVD PCIE_TX2 PCIE_RX2 PEG_RX4 PEG_TX4 GND WAKEO PEG_RE4 PEG_TX4 GPl2 WAKE1 RSVD GND PCIE_TX1 PCIE_RX1 PEG_RX5 PEG_TX5 aso roe ma roms some Board Layout and Pin Assignments 11 CEM831 COM Express Module U
8. Mode This option specifies the power conserving state that the hard disk drive enters after the specified period of hard drive inactivity has expired The default setting is Suspend Disabled This setting prevents hard disk drive power down mode Standby This option Stops the hard disk drives from spinning during a system standby This option cuts the power to the hard disk drives during a system suspend This is the default setting gt Resume On PME This item enables or disables the function of Resume On Power Management Event Enabling this item allows the system to resume from standby mode Resume On RTC Alarm You can set Resume On RTC Alarm item to enabled and key in Data time to power on system 28 AMI BIOS UTILITY CEM831 COM Express Type Il Module User s Manual e Hardware Health CPU Configuration This screen shows the Hardware Health CPU Configuration and a description of the selected item appears on the right side of the screen BIOS SETUP UTILITY H W Health Function Enabled v02 61 C Copyright 1985 2006 American Megatrends Inc H W Health Function If you computer contains a monitoring system it will show PC health status during POST stage There are these options for your selection Enabled and Disabled Hardware Health Event Monitoring The Hardware Health Event Monitoring displays the temperature of CPU and System Fan Speed Vcore etc System Temperature CPU T
9. SM CMD SM byteAccess xdelay because the CPU too fast delay for IO while 1 if check smbus busy zz0 break xch inp SM DATA xdelay because the CPU too fast delay for IO outp SM STATUS 2 clear interrupt status return xch check smbus busy void UCHAR xch xch inp SM STATUS 50 GPIO amp Witchdog Timer CEM831 COM Express Type Il Module User s Manual if xch amp 0x02 outp SM STATUS 2 clear interrupt status if xch amp 0x02 return 1 if xch amp 0x01 return 1 return 0 xdelay int xxi xxj xxkz0 for 0 xxi 0x1000 xxi for xxj 0 lt 0x100 xxj GPIO amp Witchdog Timer 51
10. mode option and application extension features Load Optimized Default customized Setting in the BIOS flash chip to prevent from CMOS battery fail LPC free supported e System Memory Two x 200 pin DDR2 SO DIMM sockets Maximum to 4G B DDR2 SDRAMs Intel 945G ME supports DDR2 400 533 up to 4GB the actual maximum capacity will be lessdepending on system configuration One PATA port supported through COM Express connector Two SATA 150 ports supported through COM Express connector e USB Interface Eight USB ports complies with USB Spec Rev 2 0 Introduction CEM831 COM Express 1 Module User s Manual e Graphics Intel 945GME GMCH Gen 3 5 integrated graphic engine m CRT and LVDS LCD output m Maximum up to 224MB frame buffer sharing system memory wm Maximum display resolution 2048 X 1536 LVDS 1366 X 768 18 or 24 bit 1920 X 1200 36 bit 1920 X 1080 48 bit e Expansion Interface m One PCI Express x16 interface for SDVO ADD2 Card as default PCI Express x16 for discrete graphics is optional with on board LVDS function removal m Three PCI Express x1 interfaces m Four 32 bit 33MHz PCI masters e Ethernet m Intel 82583V for PCI E Gigabit Ethernet and optional with co layout as Intel 82574L for Gigabit Ethernet e Audio m HD Audio e Power Management m ACPI Advanced Configuration and Power Interface Su NOTE All specifications and images are subject to change with
11. 101 102 or Microsoft Natural 5 2 Keyboard 00000061 00000061 System speaker 00000063 00000063 Motherboard resources gt 00000064 00000064 Standard 101 102 Key or Microsoft Natural 5 2 Keyboard 00000065 00000065 Motherboard resources 00000067 00000062 Motherboard resources 00000070 00000071 System CMOS real time clock 00000072 00000077 Motherboard resources 00000080 00000080 Motherboard resources 00000081 00000083 Direct memory access controller 00000084 00000085 Motherboard resources 00000087 00000087 Direct memory access controller 00000088 00000088 Motherboard resources 00000089 00000088 Direct memory access controller 0000008 0000008E Motherboard resources 00000082 0000008 Direct memory access controller 00000090 00000092 Motherboard resources 00000040 00000041 Programmable interrupt controller 00000042 00000087 Motherboard resources 000000 0 000000DF Direct memory access controller 000000 0 Motherboard resources 00000020 000000FF Numeric data processor 00000120 00000127 Primary IDE Channel 00000274 00000277 ISAPNP Read Data Port 00000279 00000279 ISAPNP Read Data Port A 000002F8 000002FF Communications Port COM2 00000378 0000037F Printer Port LPT1 00000360 00000388 Mobile Intel R 945 Express Chipset Family 000003 0 000003DF Mobile Intel R 945 Express Chipset Family Bo Hardware Descri
12. 8 Activate WDT O 2E 30 2F 01 Set Second or Minute 2E F5 O2FN N 00 or 08 See below table Set base timer O 2E F6 O 2F M 00 01 02 FF Hex Value 0 to 255 WDT counting re set timer O 2E F6 O 2F M M 00 01 02 FF See below table WATCHDOG Timer 45 CEM831 COM Express Module User s Manual IF to disable WDT 2 30 2 00 Can be disable at any time e Timeout Value Range m 110255 m Minute Second e Program Example Watchdog Timer can be set to system reset after 5 second timeout oma EM Set Minute or Second N 08 Min 00 Sec 46 WATCHDOG Timer CEM831 COM Express Type Il Module User s Manual APPENDIX B GPIO amp WATCHDOG TIMER PROGRAMMING SOURCE CODE FROM CEM831 FINTEK F75111R Programming Source Code INCLUDE FILE include lt stdio h gt include lt conio h gt include lt bios h gt define UCHAR unsigned char define UINT unsigned int define SMIOBASE 0x400 PERSE PEE ee SMIOBASE can get from PCI device Bus 0 Device 31 Function 3 Register 20h 23h the value is the IO base address define SM REG SMIOBASE 3 define SM_ADDR SMIOBASE 4 itdefine SM DATA SMIOBASE 5 define SM_CMD SMIOBASE 2 define SM_STATUS SMIOBASE 0 define SM_byteAccess 0x48 define Device_Addr Ox6E depend on hardwire designed
13. Connector COM Express Connector Board Layout and Pin Assignments CEM831 COM Express Module User s Manual S1 S2 COM Express Connector 1 110 B1 B110 Civ C110 E D1 D110 Board Layout and Pin Assignments 9 CEM831 COM Express Module User s Manual Description i Description i Description Description GND FIXED GND FIXED GND FIXED GND FIXED i ceto s ima wepe s xs Genua se ioe 2 os ine mea A9 GBEO MDI1 B9 LPC DRQ1 C9 IDE D13 D9 IDE 11 GND FIXED GND FIXED en GND FIXED 011 GND FIXED Serm ere ore susse ere sussram asema Ser me ero sarai mee cro ws 21 GND FIXED 21 GND FIXED C21 GND FIXED D21 GND FIXED A22 N C B22 N C C22 PCI REQO D22 PCI AD1 A23 N C B23 N C C23 PCI 023 PCI A24 SUS_S5 B24 PWR_OK C24 PCI ADO D24 PCI AD5 A25 N C B25 N C C25 PCI AD2 D25 PCI AD7 1 GND FIXED GND FIXED GND FIXED ace B30 Ast 10 Board Layout and Assignments CEM831 COM Express Module User s Manual ms seipsos s yun msc Pn nasci THRMTRIP THRM PCI_LOCK PCI_TRDY
14. Enter lt ESC gt Arrow keys and SO On lt Note Some of navigation keys differ from one screen to another 8 AMI BIOS UTILITY CEM831 COM Express Type Il Module User s Manual Left Right The Left Arrow keys allow you to select a setup screen Up Down The Up and Down Arrow keys allow you to select a setup screen or sub screen The Plus and Minus Arrow keys allow you to Plus Minus change the field value of a particular setup item The lt Tab gt key allows you to select setup fields The lt F1 gt key allows you to display the General Help screen The lt F10 gt key allows you to save any changes you have made and exit Setup Press the lt F10 gt key to save your changes changes The lt Enter gt key allows you to display or change the setup option listed for a particular setup item The lt Enter gt key can also allow you to display the setup sub screens The lt Esc gt key allows you to discard any changes you have made and exit the Setup Press the lt Esc gt key to exit the setup without saving your AMI BIOS UTILITY 19 CEM831 COM Express Module User s Manual 4 3 Main Menu When you first enter the Setup Utility you will enter the Main setup screen You can always return to the Main setup screen by selecting the Main tab There are two Main Setup options They are described in this section The Main BIOS Setup screen is shown below
15. IRUS Continue Y N _ The following appears after any attempt to format any cylinder head or sector of any hard disk drive via the BIOS INT 13 Hard disk drive Service Format Possible VIRUS Continue Y N 38 AMI BIOS UTILITY CEM831 COM Express Type Il Module User s Manual 4 8 Chipset Menu The Chipset menu allows users to change the advanced chipset settings You can select any of the items in the left frame of the screen to go to the sub menus North Bridge Configuration South Bridge Configuration For items marked with gt please press Enter for more options BIOS SETUP UTILITY Main Advanced Boot Security gt North Bridge Configuration v02 61 C Copyright 1985 2006 American Megatrends Inc AMI BIOS UTILITY 39 CEM831 COM Express Module User s Manual e North Bridge Configuration BIOS SETUP UTILITY DRAM Frequency v02 61 C Copyright 1985 2006 American Megatrends Inc gt Boot Graphic Adapter Priority This item allows you to select the graphics controller as the primary boot device gt Internal Graphics Mode Select This item allows you to select the amount of system memory used by the internal graphics device PEG Port Configuration PEG Port This item is a toggle to enable or disable the PCI Express port Here are the options for your selection Auto and Disabled gt Video Function Configuration Press Enter for the sub
16. UCHAR read smbus UCHAR UCHAR void write smbus UCHAR UCHAR UCHAR define F75111 CHIPID 0x0003 define F75111 VENDORID 0x3419 define WDTOUT10 CntlReg1 0x34 define WDTOUT10 28S bit 0x04 bit 2 define WDTOUT10 OINV bit 0x02 bit1 define WDTOUT10 Status bit 0x01 bit O write 1 for clear status define WDTOUT10 CntlReg2 0x35 define WDTOUT10 Enable bit 0x80 bit 7 define WDTOUT10 PTIME Ox7f bit 0 6 GPIO amp Witchdog Timer 47 CEM831 COM Express Type Il Module User s Manual main UCHAR xch xch2 chipid 0 vendorid 0 Check the Chip ID information xch _read_smbus Device_Addr 0x5a Chip ID 1 xch2 read smbus Device Addr 0x5b Chip ID 2 chipidz UINT xch2 lt lt 8 UINT xch xchz read smbus Device Addr 0x5d Vendor ID 1 xch2 read smbus Device Addr Ox5E Vendor ID 2 vendorid UINT xch2 lt lt 8 UINT xch if F75111_CHIPID chipid F75111_VENDORID vendorid printf Not found F75111 chip n exit 1 printf Found F75111 chip n printf GPIO Output Test n GPIO3x direction printf Set F75111 GPIO3x pin is output direction n write smbus Device Addr 0x40 0x0f GPIO3x Output direction set GPIO3x output level or plus printf Set F75111 GPIO3x pin is output Level n Write smbus Device Addr 0x43 0 GPIO3x Level control write GPIO3x data printf Write GPIO3x data is 0 0 printf GPO0z0 GPO1 1
17. Watchdog Function 45 APPENDIX B ra E E 47 GPIO amp WATCHDOG TIMER 47 CEM831 COM Express Module User s Manual Chapter 1 Introduction The CEM831 is a new COM Express Type Il Module to support Intel 270 with 533MHz FSB and integrates Intel 945 amp ICH7M chipsets This powerful module supports excellent Multiple LVDS LCD Gigabit Ethernet HD digital Audio one PATA 100 two SATA and eight USB 2 0 ports to make all in one single module as computing engine It provides one PCI Express x16 for graphics or SDVO three PCI Express X1 and four 32 bit 33MHz PCI master for expansion purpose It can achieve the best stability and reliability that makes your system perform the most endurable operation in any critical environments The built in Watchdog Timer has enhanced the system reliability that achieves a unique feature to distinguish itself from other boards Introduction 1 CEM831 COM Express Module User s Manual 1 1 Specifications CPU Intel Atom 270 1 6GHz 512KB L2 cache processor e CPU Frequency FSB533MHz e System Chipset Intel 945GME and ICH7M Intel 945GME and ICH7M DH Option e BIOS AMI BIOS m 8 Mbit SPI Flash DMI Plug and Play m RPL PXE Ethernet Boot ROM m SmartView for multiple LCD type selection display
18. el R 945 Express Chipset Family QOOODFFF Intel R 828016 ICH Family PCI Express Root Port 2706 0000DC9F Intel R 82583 Gigabit Network Connection M M M M 0000 Intel R PRO 100 M Network Connection 2 0000FFA0 R 0000 Intel R 828016 ICH Family Ultra ATA Storage Controllers 27DF Hardware Description 2K4 2K4 2K4 2 4 2704 CEM831 COM Express Module User s Manual 3 5 Interrupt Controller With CEB94000 under WinXP Interrupt request IRQ 4 15 0 y 1 J 5 3 9 SA 4 4 154 8 ig ISA 9 77 ISA 12 15 13 154 14 PCI 11 PCI 16 PCI 16 PCI 16 PCI 16 PCI 18 88 PCI 19 PCI 19 PCI 19 PCI 19 PCI 23 PCI 23 88 PCI 23 System timer Standard 101 102 Key or Microsoft Natural 5 2 Keyboard Communications Port COM2 Communications Port System CMOS real time clock Microsoft ACPI Compliant System Microsoft 5 2 Mouse Numeric data processor Primary IDE Channel Intel R 828016 ICH Family SMBus Controller 27DA Intel R 828016 ICH Family PCI Express Root Port 2700 Intel R 828016 ICH Family USB Universal Host Controller 27CB Microsoft Bus Driver For High Definition Audio Mobile Intel R 945 Express Chipset Family Intel R 828016 ICH Family USB Universal Host Controller 27CA Intel R 82583V Gigabit Network Connection Intel R 828016 ICH Family PCI Express Root Po
19. emperature Fan2 Speed These items display the temperature of CPU and System Fan Speed Vcore etc AMI BIOS UTILITY 29 CEM831 COM Express Module User s Manual e PCI Express Configuration This screen shows the PCI Express Configuration and you can change its value A description of the selected item appears on the right side of the screen BIOS SETUP UTILITY Active state Power Management Disabled v02 61 C Copyright 1985 2006 American Megatrends Inc gt Active State Power Management Use this item to enable or disable the function of Active State Power Management to provide you with lower power consumption The default setting is Disabled 30 AMI BIOS UTILITY CEM831 COM Express Type Il Module User s Manual e USB Configuration You can use this screen to select options for the USB Configuration and change the value of the selected option A description of the selected item appears on the right side of the screen BIOS SETUP UTILITY Options USB Functions 8 USB Ports v02 61 C Copyright 1985 2006 American Megatrends Inc gt USB 2 0 Controller Mode Use this item to configure the USB 2 0 controller The default setting is HiSpeed gt Legacy USB Support Use this item to enable or disable support for USB device on legacy operating system The default setting is Enabled gt BIOS EHCI Hand Off Enabling this item provide the support for operating Systems without an EHCI hand
20. ends Inc gt Quick Boot Enabling this item lets the BIOS skip some power on self tests POST The default setting is Enabled gt Quiet Boot Set this item to allow the computer system to Disabled display the POST messages Set this item to allow the computer system to Enabled display the OEM logo This is the default setting gt AddOn ROM Display Mode This item selects the display mode for option ROM The default setting is Force BIOS Boot Num Lock Use this item to select the power on state for the NumLock The default setting is On AMI BIOS UTILITY CEM831 COM Express Type Il Module User s Manual Wait For F1 Of Error If this item is enabled the system waits for the F1 key to be pressed when error occurs The default setting is Enabled Hit DEL Message Display If this item is enabled the system displays the message Press DEL to run Setup during POST The default setting is Enabled gt Interrupt 19 Capture If this item is enabled this function makes the option ROMs to trap Interrupt 19 The default setting is Disabled AMI BIOS UTILITY 35 CEM831 COM Express Module User s Manual e LAN Boot Option BIOS SETUP UTILITY LAN Boot Disabled v02 61 C Copyright 1985 2006 American Megatrends Inc 36 AMI BIOS UTILITY CEM831 COM Express Type Il Module User s Manual 4 7 Security Menu The Security menu allows users to change the security s
21. ettings for the system BIOS SETUP UTILITY Main Advanced PCIPnP Boot Chipset Exit Change Supervisor Password v02 61 Copyright 1985 2006 American Megatrends Inc gt Supervisor Password This item indicates whether a supervisor password has been set lf the password has been installed Installed displays If not Not Installed displays User Password This item indicates whether a user password has been set If the password has been installed Installed displays If not Not Installed displays AMI BIOS UTILITY 37 CEM831 COM Express Module User s Manual Change Supervisor Password Select this option and press Enter to access the sub menu You can use the sub menu to change the supervisor password gt Change User Password Select this option and press Enter to access the sub menu You can use the sub menu to change the user password gt Boot Sector Virus Protection This option is near the bottom of the Security Setup screen The default setting is disabled Protection This is the default setting Select Enabled to enable boot sector protection It displays a warning when any program or virus issues a Disk Format command or attempts to write to the boot sector of the hard disk drive If enabled the following appears when a write is attempted to the boot sector You may have to type N several times to prevent the boot sector Enabled write Boot Sector Write Possible V
22. ing jobs with precautions m Donotremove boards or integrated circuits from their anti static packaging until you are ready to install them m Before holding the board or integrated circuit touch an unpainted portion of the system unit chassis for a few seconds It discharges static electricity from your body m Wear a wrist grounding strap available from most electronic component stores when handling boards and components Trademarks Acknowledgments Axiomtek is a trademark of Axiomtek Co Ltd Windows is a trademark of Microsoft Corporation AMI are trademarks of American Megatrend Inc IBM PC AT PS 2 VGA are trademarks of International Business Machines Corporation Intel and Atom are trademarks of Intel Corporation Winbond is a trademark of Winbond Electronics Corp Realtek is a trademark of Realtek Semi Conductor Co Ltd Other brand names and trademarks are the properties and registered brands of their respective owners Table of Contents Disclaimers ii ESD Precautions U U uuu uu u u iii Chaptet 1 reete nte ee aenea iura ee oen netos aie 1 Introduction 1 1 Specifications 1 2 Utilities Supported 3 Cra pter 2 oe 4 Board Layout and Pin Assignme
23. is option specifies how the externally mounted power button on the front of the computer chassis is used The default setting is On Off Pushing the power button turns the computer On Off on or off This is the default setting This is the default setting Pushing the power button places the computer in Suspend mode or Full On power mode gt Video Power Down Mode This option specifies the Power State that the video subsystem enters when the BIOS places it in a power saving state after the specified period of display inactivity has expired The default setting is Suspend This setting prevents the BIOS from initiating Disabled any power saving modes concerned with the video display or monitor This option places the monitor into standby mode after the specified period of display inactivity has expired This means the monitor Standby is not off The screen will appear blacked out The standards do not cite specific power ratings because they vary from monitor to monitor This option places the monitor into suspend mode after the specified period of display inactivity has expired This means the monitor is not off The screen will appear blacked out The standards do not cite specific power ratings because they vary from monitor to monitor but this setting use less power than Standby mode This is the default setting AMI BIOS UTILITY 27 CEM831 COM Express Module User s Manual gt Hard Disk Drive Power Down
24. menu for setting up video function 40 AMI BIOS UTILITY CEM831 COM Express Type Il Module User s Manual e Video Function Configuration BIOS SETUP UTILITY Options DVMT Mode Select DVMT Mode v02 61 C Copyright 1985 2006 American Megatrends Inc AMI BIOS UTILITY 41 CEM831 COM Express Module User s Manual e South Bridge Configuration BIOS SETUP UTILITY Audio Controller Auto v02 61 C Copyright 1985 2006 American Megatrends Inc gt PCIE Port Configuration This item allows you to set or disable the PCI Express Ports 72 AMI BIOS UTILITY CEM831 COM Express Type Il Module User s Manual 4 9 Exit Menu The Exit menu allows users to load your system configuration with optimal or failsafe default values BIOS SETUP UTILITY Main Advanced PCIPnP Boot Security Chipset Save Changes and Exit v02 61 C Copyright 1985 2006 American Megatrends Inc Save Changes and Exit When you have completed the system configuration changes select this option to leave Setup and reboot the computer so the new system configuration parameters can take effect Select Save Changes and Exit from the Exit menu and press Enter Select Ok to save changes and exit AMI BIOS UTILITY 43 CEM831 COM Express Module User s Manual gt Discard Changes and Exit Select this option to quit Setup without making any permanent changes to the system configuration Select Discard Cha
25. nc Max CPUID Value Limit You can enable this item to let legacy operating systems boot even without support for CPUs with extended CPU ID functions gt Execute Disable Bit Capability This item helps you enable or disable the No Execution Page Protection Technology gt Hyper Threading Technology Use this item to enable or disable Hyper Threading Technology which makes a single physical processor perform multi tasking function as two logical ones 22 AMI BIOS UTILITY CEM831 COM Express Type Il Module User s Manual Intel R Speed Step tm tech This item helps you enable or disable the Intel Speed Step Technology gt R C STATE tech Use this item to enable or disable the C State technology gt Enhanced C States This item allows you to enable or disable any available enhanced C states C2E C3E C4E and Hard CAE e IDE Configuration You can use this screen to select options for the IDE Configuration and change the value of the selected option A description of the selected item appears on the right side of the screen For items marked with gt please press Enter for more options BIOS SETUP UTILITY ATA IDE Configuration Enhanced v02 61 C Copyright 1985 2006 American Megatrends Inc AMI BIOS UTILITY 23 CEM831 COM Express Module User s Manual gt ATA IDE Configuration Use this item to specify the integrated IDE controller There are three o
26. nges and Exit from the Exit menu and press Enter Select Ok to discard changes and exit gt Load Optimal Defaults It automatically sets all Setup options to a complete set of default settings when you select this option The Optimal settings are designed for maximum system performance but may not work best for all computer applications In particular do not use the Optimal Setup options if your computer is experiencing system configuration problems Select Load Optimal Defaults from the Exit menu and press lt Enter gt gt Load Fail Safe Defaults It automatically sets all Setup options to a complete set of default settings when you select this option The Fail Safe settings are designed for maximum system stability but not maximum performance Select the Fail Safe Setup options if your computer is experiencing system configuration problems Select Load Fail Safe Defaults from the Exit menu and press lt Enter gt Select Ok to load Fail Safe defaults 44 AMI BIOS UTILITY CEM831 COM Express Type Il Module User s Manual APPENDIX A WATCHDOG TIMER Watchdog Timer Setting From CEB94000 Super I O W83627HG After the system stops working for a while it can be auto reset by the Watchdog Timer The integrated Watchdog Timer can be set up in the system reset mode by program Using the Watchdog Function Start 4 Un Lock WDT O 2E 87 Un lock super I O O 2E 87 Un lock super I O Select Logic device O 2E 07 O 2F 0
27. nts 2 1 Board Dimensions and Fixing Holes 2 2 Board Layout esee nennen nnne 2 3 Jumper Settings 8 2 4 Connectors eese eese eene nennen nnn tnnt 8 C Ira pite Saa u u aqata e 14 Hardware Description 14 3 1 Microprocessors u u u u u 14 3 2 lem 14 3 3 System Memory a u u u u 14 3 4 Port Address Map With CEB94000 under WinXP 15 3 5 Interrupt Controller With CEB94000 under WinXP 17 CHAPTER 4 D u qaa kana 18 AMI BIOS UTILITY u ansa ans 18 4 1 Starting 18 4 2 Navigation Keys u u u u u uu u 18 4 3 Main Menu u u u 20 4 4 Advanced 21 4 5 POL PnP toit 32 4 6 Boot Menu U u u u uu u uu 33 4 7 Security Menu entente 37 4 8 Chipset Menu 39 4 9 Exit Men 43 APPENDIX A ecc 45 WATCHDOG TIMER tiet eleme solidis au 45 Using the
28. off feature The default setting is Enabled AMI BIOS UTILITY 31 CEM831 COM Express Module User s Manual 4 5 PCI PnP Menu The PCI PnP menu allows users to change the advanced settings for PCI PnP devices BIOS SETUP UTILITY Main Advanced Boot Security Chipset Exit Clear NVRAM v02 61 C Copyright 1985 2006 American Megatrends Inc gt Plug amp Play O S When the setting is No Use this item to configure all the devices in the system When the setting is Yes and if you install a Plug and Play operating system the operating system configures the Plug and Play devices not required for boot The default setting is No 32 AMI BIOS UTILITY CEM831 COM Express Type Il Module User s Manual 4 6 Boot Menu The Boot menu allows users to change boot options of the system You can select any of the items in the left frame of the screen to go to the sub menus Boot Settings Configuration Boot Device Priority Hard Disk Drives INTEL 82574 LAN Boot ROM For items marked with gt please press lt Enter gt for more options BIOS SETUP UTILITY Main Advanced PCIPnP Security Chipset Exit gt Boot Settings Configuration v02 61 C Copyright 1985 2006 American Megatrends Inc AMI BIOS UTILITY 33 CEM831 COM Express Module User s Manual e Boot Settings Configuration BIOS SETUP UTILITY Quick Boot Enabled v02 61 C Copyright 1985 2006 American Megatr
29. out notice 1 2 Utilities Supported Chipset Driver VGA Driver Ethernet Driver Audio Driver Introduction 3 CEM831 Express Module User s Manual 2 1 ss 50 00 Chapter 2 Board Layout and Pin Assignments Board Dimensions and Fixing Holes 88 28 fo za 7 2 10 j 1 60 91 00 87 00 50 00 33 59 26 86 0 00 4 00 4 00 0 00 15 05 56 96 76 00 96 08 117 00 121 00 Component Side Board Layout and Pin Assignments CEM831 COM Express Type Il Module User s Manual Solder Side Board Layout and Pin Assignments 5 CEM831 COM Express Module User s Manual 2 2 Board Layout 9090009020008 Component Side Board Layout and Pin Assignments CEM831 COM Express Type II Module User s Manual Solder Side Board Layout and Pin Assignments 7 CEM831 COM Express Module User s Manual 2 3 Jumper Settings 1 PCI Express X1 or X4 Select SW1 Description setings SW1 Descrpion sets 2 4 Connectors The connectors allow the CPU Board to connect with other parts of the system Some problems encountered by your system may be a result from loose or improper connections Ensure that all connectors are in place and firmly attached The following table lists the function of each connector on the CEM831 DDRII SODIMM Connector DIMM1 DDRII SODIMM Connector DIMM2 COM Express
30. ption 15 CEM831 Express Module User s Manual 000003F6 3 000003F8 00000400 00000480 00000400 00000800 00000400 00000479 00000000 00008C00 00008C80 0000 000 00006083 Intel R 82801 GBM GH 00000080 0000C400 0000C480 0000C800 0000C880 0000CCOD 0000CC8D ig 00000000 89 0000DC80 E9 0000 80 00000326 Primary IDE Channel Q00003FF Communications Port Q000041F Intel R 828016 ICH Family SMBus Controller 2704 000004BF Motherboard resources 00000401 Motherboard resources 0000087 Motherboard resources QO000A0F Motherboard resources 00000479 ISAPNP Read Data Port DOOOFFFF PCI bus O000BCOF Intel R 82801GBMJGH IGHM 7 Family Serial ATA Storage Controller 00008 83 Intel R 82801GBMJGH I I ICH7 M Family Serial ATA Storage Controller 0000C007 Intel R 82801GBM GHM ICH7 M Family Serial ATA Storage Controller ICH M Family Serial ATA Storage Controller 0000 407 Intel R 82801GBMJGHM ICH7 M Family Serial ATA Storage Controller 0000 49 Intel R 828016 ICH Family USB Universal Host Controller 27CB 0000C81F Intel R 828016 ICH Family USB Universal Host Controller 27CA 0000C89F Intel R 828016 ICH Family USB Universal Host Controller 2709 0000CC1F Intel R 828016 ICH Family USB Universal Host Controller 27 8 0000CC87 Mobile Int
31. ptions for your selection Disabled Compatible and Enhanced gt Legacy IDE Channels When the ATA IDE Configuration is set to Compatible this item will be displayed gt Primary Secondary Third IDE Master Slave Select one of the hard disk drives to configure IDE devices installed in the system by pressing Enter for more options gt Primary Secondary IDE Master Slave Select one of the hard disk drives to configure IDE devices installed in the system by pressing Enter for more options gt Third IDE Master Select one of the hard disk drives to configure IDE devices installed in the system by pressing Enter for more options gt Hard Disk Write Protect Set this option to protect the hard disk drive from being overwritten The default setting is Disabled gt IDE Detect Time Out Sec Set this option to stop the AMIBIOS from searching for IDE devices within the specified number of seconds Basically this allows you to fine tune the settings to allow for faster boot times Adjust this setting until a suitable timing that can detect all IDE disk drives attached is found 24 AMI BIOS UTILITY CEM831 COM Express Type Il Module User s Manual e Configuration You can use this screen to select options for the ACPI Configuration and change the value of the selected option A description of the selected item appears on the right side of the screen BIOS SETUP UTILITY PCIPnP Boot Security Chipset Exit
32. rt 2706 Intel R 828016 ICH Family USB Universal Host Controller 27C9 Intel R 82801GBM GHM ICH7 M Family Serial ATA Storage Controller 27C4 Intel R 828016 ICH Family USB Universal Host Controller 27C8 Intel R 828016 ICH Family USB2 Enhanced Host Controller 27CC Intel R PRO 100 M Network Connection Bo Hardware Description 17 CEM831 COM Express Type Il Module User s Manual 4 1 4 2 CHAPTER 4 AMI BIOS UTILITY The BIOS of CEM831 is porting as legacy free which is default to be without LPC I O the another alternative is with Winbond Super I O W83627HG If the Baseboard designer use a different Super I O chip the BIOS needs to be customized The AMI BIOS provides users with a built in Setup program to modify basic system configuration All configured parameters are stored in a battery backed up RAM CMOS RAM to save the Setup information whenever the power is turned off Starting To enter the setup screens follow the steps below Turn on the computer and press the lt Del gt key immediately After you press the Delete key the main BIOS setup menu displays You can access the other setup screens from the main BIOS setup menu such as the Chipset and Power menus Navigation Keys The BIOS setup utility uses a key based navigation system called hot keys Most of the BIOS setup utility hot keys can be used at any time during the setup navigation process These keys include F1 lt F10 gt
33. ser s Manual lA70 GND FIXED Ez GND FIXED C70 GND FIXED GND FIXED Description Description i Description Description LVDS_A0 LVDS_BO PEG_RX6 PEG_TX6 me ues ere uem ora ves me 5 rea re vs uos a era wos ers fora sovo para ors LVDS_A2 LVDS_B2 PEG_RX7 PEG_TX7 LVDS_A2 LVDS_B2 A77 LVDS_VDD_EN B77 LVDS_B3 RSVD IDE_CBLID jaza LVDS A3 B78 LVDS B3 PEG RX8 E PEG 8 LVDS_A3 LVDS BKLT EN PEG RX8 PEG TX8 GND FIXED GND FIXED GND FIXED GND FIXED Em LVDS A CK LVDS B Em PEG RX9 E PEG 9 LVDS A CK LVDS B CK PEG RX9 PEG TX9 Lvbs 12 B83 LVDS_BKLT Rnsvp LVDS_I2C_DAT VCO5V SBY esp A85 GPI3 885 VCC 5V SBY Ee KBD_RST VCC_5V_SBY PEG RX10 PEG TX10 CK REF RSVD PEG_RX11 PEG_TX11 PCIEO_CK_REF VGA_RED PEG_RX11 PEG_TX11 GND FIXED GND FIXED GND FIXED 090 GND FIXED RSVD VGA_GRN PEG_RX12 PEG_TX12 RSVD VGA_BLU PEG_RX12 PEG TX12 RSVD VGA VSYNC PEG RX134 PEG 13 RSVD I2C CK PEG RX13 PEG TX13 12 Board Layout and Pin Assignments CEM831 COM Express Module User s Manual Pin escipion _ bescipion Pin Desempton veo eee 1w 0Ac_c coo rea m ooo Peo me A105 VCC 12V B105 VCC 12V C105 12V 0105 VCC 12V 12V VCC 12V VCC 12V VCC 12V GND FIXED 110 GND FIXED C110 GND FIXED 0110
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