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1. fos ee E DERE ns Tass fos LEER CNN ML RR RR M ar GND FIXED Beo GND FINED a sone sor roe wear oe np Poe mo D ws om Nc nw foa ns Tas o5 Nc foe me ow Ta wr cp cw Nc So de GNDEXED on SC ENER DS A gE SEN DS AT Bn EE DS As DS AZ E GND DS VODEN IS DS A Ws wose cs Nc ow DS A e GNDEXXED SIS EE DSACK Is Ds 2e ck Bm RED em Daer cw ono ou on ws vec sv sev om ne o5 Iess ews fne Isi GND POET CK REF Am 0 CK REF B89 oss 89 GND FIED 9 PI POWER 92 PI MISO B9 9 gem rN POO ms Nc o NE o o ojo d o TH Pd Ps em ed l l AB r gt En lt r EE jN p lr EE e r iz Oo 3 56 9o r gt oo 5 lt gg co als Sa 5 gt co a z CH E CO CO e e N A A 9 PL CLK 95 PI MOSI B95 9 NC NC 9 PM PP NC NC gt D e co NIOD 99 S399 999 e ojs w s A98 SERO TX B98 INC 98 A99 SERO RX B9 NC 9 N E GND FIRED GND FED cio No ou FAN TACAN Tae TN SES GND Voc
2. 0000009F Motherboard resources K 00000092 00000092 Motherboard resources 16 Hardware Description CEM881 COM Express Type 6 Compact Module E 00000093 0000009F Direct memory access controller 000000A0 000000A1 Programmable interrupt controller Wi 000000A2 000000BF Motherboard resources zB 000000A4 00000045 Programmable interrupt controller 000000A8 000000A9 Programmable interrupt controller 000000AC 000000AD Programmable interrupt controller Wi 000000B0 000000B1 Programmable interrupt controller Wi 000000B2 000000B3 Motherboard resources Wi 000000B4 00000085 Programmable interrupt controller Wi 000000B8 00000089 Programmable interrupt controller X 000000BC 000000BD Programmable interrupt controller Wi 000000 0 000000DF Direct memory access controller Wi 000000E0 000000EF Motherboard resources E 000003B0 000003BB Intel R HD Graphics Family a 000003C0 000003DF Intel R HD Graphics Family Wi 00000400 000004D1 Motherboard resources 000004D0 000004D1 Programmable interrupt controller Wi 00000680 0000069F Motherboard resources Wi 00000A00 00000A0F Motherboard resources Wi 00000A10 00000A1F Motherboard resources Wi 00000A20 00000A3F Motherboard resources Wi 00000D00 0000FFFF PCI bus Wi 0000164E 0000164F Motherboard resources Wi 00001800 000018FE Motherboard resources Wi 00001854
3. X AXIOMTEK CEM881 4 5 Generation Intel Core Processor COM Express Type 6 Compact 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 2015 Axiomtek Co Ltd All Rights Reserved January 2015 Version A1 Printed in Taiwan ESD Precautions Computer boards have integrated circuits sensitive to static electricity To prevent chipsets from electrostatic discharge damage pleas
4. F4 Save amp Exit ESC Exit Version 2 17 1246 Copyright C 2014 American Megatrends Inc Intel AMT Enable or disable Intel Active Management Technology BIOS Extension The default is Enabled AMI BIOS Setup Utility CEM881 COM Express Type 6 Compact Module e USB Configuration Aptio Setup Utility Copyright C 2014 American Megatrends Inc Version 2 17 1246 Copyright C 2014 American Megatrends Inc USB Devices Displays all detected USB devices AMI BIOS Setup Utility 33 CEM881 COM Express Type 6 Compact Module e F81803 HW Monitor This screen is for Smart Fan configuration and hardware health status monitoring Aptio Setup Utility Copyright C 2014 American Megatrends Inc Smart Fan Mode Select Auto Mode Smart Fan Mode Select Mode a Manual Mode ct Scre Version 2 17 1246 Copyright C 2014 American Megatrends Inc This screen displays the temperature of system and CPU cooling fan speed in RPM and system voltages Vcore 12V and 3 3V Smart Fan Mode Select Set Smart Fan mode The default is Auto Mode If Smart Fan is in Auto Mode the system fan spins at different speed depending on system temperature the higher the temperature the faster the system fan spins If Smart Fan is in Manual Mode user can manually change system fan speed to 0 5096 75 or 100 34 AMI BIOS Setup Utility CEM881 COM Express Type 6 Compac
5. e e z o c DI2 BEO LINK BEO MDI r c gt alo 11 ao xx jN Cc x n D gt a co Re o CO gt gt N CO gt gt gt N N n 2 N wo CO 2 N 4A Re gt La e wn gt O gt N CO 2 D DI P P m E Ka La os gt A2 co S ATA_ACT B28 NC co NC os 29 3 s 2 5 am x e 3 AT T S aa s s 0 am s S S 2 B55 a ce im alan BR K l SIS SIS eR CO gt e A ala 5 A5 Gn 0 on 12 ACIHDA SDIN1 ACIHDA SDINO GND FIXED SPKR 2C CK 2C DAT HRM SB7 SB7 GB A D OCH SB5 SB5 D FIXED SB3 SB3 SB_0_1_OC SB1 SB1 EXCD1_PERST EXCD1_CPPE SYS_RESET CB_RESET GND FIXED Q S SIS c icicicic c cicicicialrmilirnm ojo PO1 D D P P Ri cs Nc ES en ND FED PAIR C34 DD DDC AUX SEL es AUX SEL m m 2 2 2 2 o 0 o o o C C gt gt Es Es e Ojo E c o l DI1 PA PA DI2 PAIR DI2 PAIR ND FIXED DI2_PAIR1 DI2 PAIR DI2 HPD DDI2 PAIR g e 2ls g 9 c DDI2 PAIR DDI2 PAIR SC FIXED Module and Pin Assignments CEM881 COM Express Type 6 Compact Module He Se E
6. il ISA 0x000000AA 170 ISA 0x000000AB 171 E ISA 0x000000AC 172 zB ISA 0x000000AD 173 JE ISA 0x000000AE 174 ISA 0x000000AF 175 ISA 000000080 176 ISA 0x000000B1 177 ISA 0x000000B2 178 ISA 0x00000083 179 e ISA 000000084 180 4 ISA 000000085 181 ISA 0x000000B6 182 ISA 000000087 183 ISA 000000088 184 ISA 0x000000E9 185 e ISA 0x000000BA 186 BS ISA 0x000000BB 187 ES ISA 0x000000BC 188 ISA 0x000000BD 189 PCI 0x0000000B 11 ci PCI 0x00000013 19 17 PCI 000000013 19 e PCI 0x00000016 22 8 PCD0 00000017 23 E PCI OxFFFFFFFB 5 PCI OxFFFFFFFC 4 t PCI OxFFFFFFFD 3 KS PCI OxFFFFFFFE 2 Intel R 8 Series SATA Controller 1 AHCI 9C03 Intel R Active Management Technology SOL COM3 High Definition Audio Controller Intel R 8 Series USB Enhanced Host Controller 1 9C26 Intel R Ethernet Connection 1218 LM Intel R Management Engine Interface Intel R USB 3 0 eXtensible Host Controller Intel R HD Graphics Family Hardware Description CEM881 COM Express Type 6 Compact Module 3 6 Memory Map The memory with CEB94006 baseboard under Windows 7 mapping list is shown as follows a UE Memory KS 000A0000 000BFFFF Intel R HD Graphics Family 000A0000 0008 P
7. 0x5b Chip ID 2 chipid C CUINT xch2 lt lt 8 UINT xch xch _read_smbus Device_Addr 0x5d Vendor ID 1 xch2 2 read smbus Device Addr 0x5E Vendor ID 2 vendorid UINT xch2 8 CUINT xch if CF75111 CHIPID chipid F75111 VENDORID vendorid 1 printf Not found F75111 chip n exit 1 printfC Found F75111 chip n printf GPIO Output Test n set 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 Ox0A n 48 Watchdog Timer and GPIO CEM881 COM Express Type 6 Compact Module printf GPO0 0 GPOl 1 GPO2 0 GPO3 1 n write smbus Device Addr 0x41 0x0a PR INE check the GPO level and hit any key to continue n getc write GPIO3x data printf write GPIO3x data is 0x05 n printf GPO0 1 GPO1 0 GPO2 1 GPO3 0 n write smbus Device Addr 0x41 0x05 B Aena check the GPO level and hit any key to continue n getc set GPIO10 11 12 used printf GPIO Input Test n printf C Set F75111 GPIO1x is used GPIO function n xch _read_smbus Device Addr 0x03 xch amp OxEO _write_smbus Device_Addr 0x03 xch set Pin GPIO10 11 12 used _w
8. Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System 19 CEM881 COM Express Type 6 Compact Module 20 ISA 0x00000096 150 Microsoft ACPI Compliant System ISA 0x00000097 151 Microsoft ACPI Compliant System ISA 0x00000098 152 Microsoft ACPI Compliant System E ISA 0x00000099 153 Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compli
9. 00000000 00000CF7 PCI bus amp 00000010 0000001F Motherboard resources 00000020 00000021 Programmable interrupt controller 00000022 0000003F Motherboard resources ca 00000024 00000025 Programmable interrupt controller ca 00000028 00000029 Programmable interrupt controller ca 0000002C 0000002D Programmable interrupt controller 0000002E 0000002F Motherboard resources ca 00000030 00000031 Programmable interrupt controller amp 00000034 00000035 Programmable interrupt controller a 00000038 00000039 Programmable interrupt controller Ra 0000003C 0000003D Programmable interrupt controller cs 00000040 00000043 System timer cs 00000044 0000005F Motherboard resources ca 0000004E 0000004F Motherboard resources 00000050 00000053 System timer 00000061 00000061 Motherboard resources 00000063 00000063 Motherboard resources 00000065 00000065 Motherboard resources 00000067 00000067 Motherboard resources 00000070 00000070 Motherboard resources Wi 00000070 00000077 System CMOS real time clock 00000072 0000007F Motherboard resources 00000080 00000080 Motherboard resources cs 00000080 00000080 Motherboard resources 00000081 00000091 Direct memory access controller 00000084 00000086 Motherboard resources 00000088 00000088 Motherboard resources D000008C 0000008bE Motherboard resources ca 00000090
10. 00001857 Motherboard resources Wi 00001C00 00001CFE Motherboard resources Wi 00001D00 00001DFE Motherboard resources Wi 00001E00 00001EFE Motherboard resources Wi 00001F00 00001FFE Motherboard resources Ws 0000F000 0000F03F Intel R HD Graphics Family 0000F040 0000FO5F Intel R 8 Series SMBus Controller 9C22 cag 0000F060 0000F07F Intel R 8 Series SATA Controller 1 AHCT 9C03 cg 0000F0A0 0000F0A3 Intel R 8 Series SATA Controller 1 AHCI 9C03 lt q 10000 080 0000F0B7 Intel R 8 Series SATA Controller 1 AHCI 9C03 cag 0000F0CO 0000F0C3 Intel R 8 Series SATA Controller 1 AHCI 9C03 cj 0000F0DO 0000F0D7 Intel R 8 Series SATA Controller 1 AHCI 9C03 7 0000FOEO 0000FOE7 Intel R Active Management Technology SOL COM3 Wi 0000FFFF 0000FFFF Motherboard resources ca OO00FFFF O000FFFF Motherboard resources Hardware Description 17 CEM881 COM Express Type 6 Compact Module 3 5 Interrupt Controller IRQ Map The interrupt controller IRQ mapping list with CEB94006 baseboard under Windows 7 is shown as follows las Interrupt request IRQ 18 L ISA 000000000 00 ISA 0100000008 08 4 ISA 0x00000051 81 ISA 000000052 82 ISA 0x00000053 83 ISA 000000054 84 ISA 000000055 85 ISA 000000056 86 ISA 000000057 87 ISA 0x00000058 8
11. 10 2 4 1 Auto Power On and Restore BIOS Optimal Defaults 1 10 2 5 a lt T T os C ERE III TII III 11 2 5 1 COM Express Connectors SS1 and S 11 Chapter 3 Hardware Description 15 3 1 MIGIODFOCOSSOE EE 15 3 2 BIOS iua edax dca d xd de E ESI ERN EM Led 15 3 37 System 0 ln RP mom 15 34 VO Port Address Map eec eire raris ae cuam coran nan s 16 3 5 Interrupt Controller IRQ Map 18 3 5 Memory Map esce ieicneen onenecn n n one on enin onion 21 Chapter 4 AMI BIOS Setup Utility 23 Zl Starting uas nav er Or cta de Pe b d E PECIA FIRE EXE EV Fe RV ad 23 42 Navigation CT 23 4 3 Main MON 25 LX AGVANCEG MENU m M 26 4 5 Chipset Men nsien siaaa vaa PUn Cede aai ues UM ee as eeh 36 4 6 Boot Mentee EE 42 4 7 Security Men s inse ca deeg EEN dee 43 48 Save S amp Exit Men sssegesesssegeseussegegeesgegeSCNESEdESCEKNESESCNENEEERCNENEgESENENEgESE 44 iv Appendix Watchdog Timer and GPIO 47 A 1 A 2 A 3 A 4 About Watchdog HREF uico eek teet blrkipir kde ire cov bible ene E 47 How to Use Watchdog Timer eere 47 ADOUL GPIO 48 How to Use GPIO This page is intentionally left blank vi CEM881 COM Express Type 6 Compact Module Ch
12. 8 ql ISA 000000059 89 ISA 000000054 90 4M ISA 000000058 91 ISA 0x0000005C 92 4 ISA 0x0000005D 93 ISA 0x0000005E 94 ISA 0x0000005F 95 ISA 000000060 96 ISA 000000061 97 4M ISA 0x00000062 98 ISA 000000063 99 4 ISA 0x00000064 100 4 ISA 000000065 101 4M ISA 0x00000066 102 4M ISA 000000067 103 e ISA 000000068 104 4M ISA 000000069 105 ISA 0 0000006C 108 SA 0x0000006D 109 SA 0x0000006E 110 System timer System CMOS real time clock Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACP
13. Aptio Setup Utility Copyright C 2014 American Megatrends Security Device Support Disable Security Device Support Disable Enable Version 2 17 1246 Copyright C 2014 American Megatrends Inc Security Device Support Enable or disable BIOS support for security device The default is Disabled 28 AMI BIOS Setup Utility CEM881 COM Express Type 6 Compact Module Aptio Setup Utility Copyright C 2014 American Megatrends Inc Security Device Support Enable Version 2 17 1246 Copyright C 2014 American Megatrends Inc Security Device Support Enable or disable BIOS support for security device Once the Security Device Support is Enabled TPM can be used by the operating system TPM State Specify whether TPM can be used by the operating system Current Status Information Display current TPM status information AMI BIOS Setup Utility 29 CEM881 COM Express Type 6 Compact Module e CPU Configuration This screen shows the CPU Configuration and you can change the value of the selected option Aptio Setup Utility Copyright C 2014 American Megatrends Inc Hyper threading Enabled Int irt izat chno log Hyper threading Enable or disable Hyper threading Technology which allows a single physical processor to multitask as multiple logical processors When disabled only one thread per enabled core is enabled Intel Virtualization Technology Enable or disable Intel Virtualization Techno
14. CI bus 00000000 000D3FFF PCI bus L 000D4000 000D7FFF PCI bus 000D8000 OOODBFFF PCI bus 000DC000 OOODFFFF PCI bus 000E0000 000E3FFF PCI bus 000E4000 000E7FFF PCI bus 1 DF200000 FEAFFFFF PCI bus E0000000 EFFFFFFF Intel R HD Graphics Family ie RZ F7800000 F7BFFFFF Intel R HD Graphics Family L F F7C00000 F7C1FFFF Intel R Ethernet Connection 1218 LM F7C30000 F7C33FFF High Definition Audio Controller cb F7C39000 F7C390FF Intel R 8 Series SMBus Controller 9C22 c F7C3A000 F7C3A7FF Intel R 8 Series SATA Controller 1 AHCI 9C03 9 F7C3B000 F7C3B3FF Intel R 8 Series USB Enhanced Host Controller 1 9C26 L Sr F7C3C000 F7C3CFFF Intel R Ethernet Connection 218 LM L E F7C3D000 F7C3DFFF Intel R Active Management Technology SOL COM3 E F7C3F000 F7C3F01F Intel R Management Engine Interface L Lu F7FDF000 F7FDFFFF Motherboard resources B Lui F7FE0000 F7FEFFFF Motherboard resources 1 88000000 FBFFFFFF Motherboard resources FEAFO000 FEAFFFFF Intel R USB 3 0 eXtensible Host Controller E FED00000 FEDOO3FF High precision event timer K FED10000 FED17FFF Motherboard resources 1 FED18000 FEDI8FFF Motherboard resources FED19000 FEDI9FFF Motherboard resources d FED1COO00 FEDIFFFF Motherboard resources d BS FED20000 FED3FFFF Motherboard reso
15. I Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Hardware Description CEM881 COM Express Type 6 Compact Module ISA 00000006F 111 ISA 000000070 112 ISA 0x00000071 113 UM ISA 0x00000072 114 ISA 000000073 115 ISA 0x00000074 116 ISA 0x00000075 117 LE ISA 0x00000076 118 4M ISA 0x00000077 119 4 ISA 000000078 120 4i ISA 000000079 121 4M ISA 0x0000007A 122 4M ISA 000000078 123 ISA 0x0000007C 124 4M ISA 0x0000007D 125 4M ISA 0x0000007E 126 JE ISA 0x0000007F 127 d ISA 000000080 128 755 ISA 0x00000081 129 4M ISA 0x00000083 131 4M ISA 0x00000084 132 d ISA 000000085 133 4M ISA 0x00000086 134 4M ISA 000000087 135 4 ISA 000000088 136 SR ISA 0x00000089 137 ISA 0x0000008A 138 4 ISA 000000088 139 4M ISA 0x0000008C 140 4 ISA 0x0000008D 141 4M ISA 0x0000008E 142 e ISA 0x0000008F 143 gl ISA 0x00000090 144 d ISA 000000091 145 4 ISA 000000092 146 4M ISA 0x00000093 147 4 ISA 000000094 148 4 ISA 000000095 149 Hardware Description Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI
16. IN VC EE Vec Vec I VC Voo 12V en VC VE GND FIXED CO Module and Pin Assignments 13 CEMS881 COM Express Type 6 Compact Module This page is intentionally left blank 14 Module and Pin Assignments CEM881 COM Express Type 6 Compact Module Chapter 3 Hardware Description 3 1 Microprocessor The CEM881 supports Intel Core i7 i5 i3 and Celeron processors which enables your system to operate under Windows 7 Windows 8 and Linux environments The System performance depends on the microprocessor You must install the heatsink or cooler carefully and properly to prevent damage to your hardware 3 2 BIOS The CEM881 uses AMI Plug and Play BIOS with a single 64Mbit SPI Flash 3 3 System Memory The CEM881 supports one 204 pin DDR3L 1333 1066MHz SO DIMM socket for maximum memory capacity up to 8GB and one onboard DDR3L memory which maximum capacity can be up to 4GB optional The memory module can come in sizes of 1GB 2GB 4GB and 8GB Hardware Description 15 CEM881 COM Express Type 6 Compact Module 3 4 UO Port Address Map The Intel Core i7 i5 i3 and Celeron processors communicate via I O ports Total 1KB port addresses are available for assigning to other devices via I O expansion cards The I O port addresses with CEB94006 baseboard under Windows 7 are as follows 4 E Input output 10 ca 00000000 0000001F Direct memory access controller
17. IOS optimal defaults SW1 2 ON 10 Module and Pin Assignments CEM881 COM Express Type 6 Compact Module 2 5 Connectors Signals go to the other parts of the system through connectors Loose or improper connection might cause problems please make sure all connectors are properly and firmly connected Here is a summary table which shows connectors on the hardware DIMM1 DDR3L SO DIMM Connector 2 5 1 COM Express Connectors SS1 and SS2 Below table shows the pin assignments for the 220 pin COM Express connectors D110 D1 C110 SS2 C1 B110 B1 Lennon A110 SS1 A1 Module and Pin Assignments 11 CEM881 COM Express A1 GND FIXED GND FIXED C1 GND FIXED GN GBEO NDI GBEO ACT C2 GND FIXE A3 GBEO_MDI3 LPC FRAME C3 USB SSRX BEO_LINK100 PC_ADO C4 SB SSRX BEO_LINK1000 PC AD C5 ND FIXE BE MDI B6 LPC C6 SB SSRXt PC AD3 C7 SB_SSRX1 C8 GND FIXED T Dit LPC_CLK EIU B11 GND FIXED PWRETN ae An ae DAT 1 ALERT B16 SATA1_TX ATM TX 87 SATA1_TX BUS STATE B19 SATA1_RX TAO RX 820 SATA1 RX G n Bi c21 GNDIFIED GND FIXED om wo wr les smm os Nc Ba ewok cM c ne cm Nc ow LS M Type 6 Compact Module G DD o s 2n T ole OJOJOO os vs m m
18. Top View Module and Pin Assignments CEMS881 COM Express Type 6 Compact Module gt 4 V 87 00 95 00 9500 Bottom View oan Side View 6 Module and Pin Assignments CEM881 COM Express Type 6 Compact Module Module Layout 2 2 a LO O DIMM1 Top View Module and Pin Assignments CEMS881 COM Express Type 6 Compact Module 2 O o SS1 OTN B Bottom View 8 Module and Pin Assignments 2 3 CEMS881 COM Express Type 6 Compact Module Installing Heatsink For thermal dissipation a heatsink enables the CEM881 s components to dissipate heat efficiently All heat generating components are thermally conducted to the heatsink in order to avoid hot spots Below images illustrate how to install the heat spreader 1 There is a protective plastic covering on the thermal pads This must be removed before the heatsink can be mounted Each heatsink is designed for a specific CEM module The thermal pads on the heatsink are designed to make contact with the necessary components on the CEM module When mounting the heatsink you must make sure that the thermal pads on the heatsink make complete contact no space between thermal pad and component with the corresponding components on the CEM module This is especially critical for CEM modules that have higher CPU speeds for exa
19. ake effect Select Save Changes and Reset from the Save amp Exit menu and press lt Enter gt Select Yes to save changes and reset e Discard Changes and Reset Select this option to quit Setup without making any permanent changes to the system configuration and reboot the computer Select Discard Changes and Reset from the Save amp Exit menu and press lt Enter gt Select Yes to discard changes and reset e Save Changes When you have completed the system configuration changes select this option to save changes Select Save Changes from the Save amp Exit menu and press lt Enter gt Select Yes to save changes 44 AMI BIOS Setup Utility CEM881 COM Express Type 6 Compact Module e Discard Changes Select this option to quit Setup without making any permanent changes to the system configuration Select Discard Changes from the Save A Exit menu and press Enter Select Yes to discard changes e Restore Defaults It automatically sets all Setup options to a complete set of default settings when you select this option Select Restore Defaults from the Save amp Exit menu and press Enter e Save as User Defaults Select this option to save system configuration changes done so far as User Defaults Select Save as User Defaults from the Save amp Exit menu and press lt Enter gt e Restore User Defaults It automatically sets all Setup options to a complete set of User Defaults when you select this option Select Restore User D
20. ant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Microsoft ACPI Compliant System Intel R 8 Series SMBus Controller 9C22 4M ISA 0400000094 154 ISA 0x0000009B 155 ISA 0x0000009C 156 4 ISA 0x0000009D 157 ISA 0x0000009E 158 ISA 0x0000009F 159 ISA 0x000000A0 160 g ISA 0x000000A1 161 SR ISA 000000042 162 4M ISA 0x000000A3 163 ill ISA 0x000000A4 164 ill ISA 0x000000A5 165 ISA 0x000000A6 166 JE ISA 0x00000047 167 48 ISA 0000000A8 168 SR ISA 000000049 169
21. aphics Configuration emo e 1 a e Version 2 17 1246 Copyright C 2014 American Megatrends Inc Graphics Configuration Open sub menu for parameters related to graphics configuration Memory Configuration Open sub menu for information related to system memory AMI BIOS Setup Utility CEM881 COM Express Type 6 Compact Module e Graphics Configuration Aptio Setup Utility Copyright C 2014 American Megatrends Inc Chipset Graphics Configuration IGFX VBIOS Version 1030 Select the video Device which will be activated during POST IGfx Frequency 400 MHz This has no effect if external graphics present Secondary boot display Secondary IGFX Boot Display Dvr selection will appear based on LVDS Panel Type 1024x768 24Bit your selection VGA modes will be supported only on primary display Primary IGFX Boot Display Select Screen Select Item r Select Change Opt Fl General Help F2 Previous Values F3 Optimized Defaults F4 Save amp Exit ESC Exit Version 2 17 1246 Copyright C 2014 American Megatrends Inc Primary IGFX Boot Display Select the display device which will be activated during POST Power On Self Test The default is HDMI Configuration options are DVI LVDS and HDMI Aptio Setup Utility Copyright C 2014 American Megatrends Inc Chipset Graphics Configuration LVDS Panel Type IGFX VBIOS Version 1030 IGfx Frequency 400 MHz Pri
22. apter 1 Introduction The CEM881 is a new COM Express Type 6 Compact Module supporting BGA type dual core 4 75 generation Intel Core i7 i5 i3 and Celeron processors It supports the most updated high speed l Os like PCI Express Gen 2 at 5GT s SuperSpeed USB 3 0 at 5Gb s and SATA 600 at 6Gb s The CEM881 does fully comply with PICMG COM 0 Rev 2 1 COM Express Type 6 specification It provides 4 Lanes of PCI Express Gigabit Ethernet HD audio interface LVDS LCD and 2 configurable DDI for more flexible digital display options 1 1 Features Intel 4 5 generation Core i7 i5 D and Celeron BGA processors 1 bank is onboard DDR3L with memory up to 4GB optional 2 4 bank is one 204 pin DDRSL SO DIMM supporting up to 8GB memory capacity Support 4 Lanes of PCI Express 4 SATA 600 6 USB 2 0 ports 2 USB 3 0 ports TPM v1 2 Introduction 1 CEM881 COM Express Type 6 Compact Module 1 2 Specifications e CPU Intel 4 5 generation Core i7 i5 D and Celeron BGA processors e Chipset Integrated in CPU e BIOS m X American Megatrends Inc BIOS C 64Mbit SPI Flash DMI Plug and Play PXE Ethernet Boot ROM customized default saving features LPC free supported uses SPI type Flash memory e System Memory m One 204 pin DDR3L 1333 1066MHz SO DIMM slot with maximum memory capacity up to 8GB wm Onboard DDR3L 1333 1066MHz memory supports maximum capacity up to 4GB optional e TPM m Trust
23. aults Both AMI and your system manufacturer have carefully set up these defaults that provide the best performance and reliability 4 2 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 F2 Enter lt ESC gt Arrow keys and so on Ei Some of the navigation keys differ from one screen to another Note AMI BIOS Setup Utility 23 CEMS881 COM Express Type 6 Compact Module Left Right The Left and Right Arrow keys allow you to select a setup screen i Up Down The Up and Down Arrow keys allow you to select a setup screen or sub screen The Plus and Minus lt Arrow gt keys allow you to change the field value of a Plus Minus oe al setup item Tab The lt Tab gt The lt Tab gt key allows you to select setup fields allows you to select setup fields F1 The lt F1 gt key allows you to display the General Help screen F2 The lt F2 gt key allows you to Load Previous Values The lt F3 gt key allows you to Load Optimized Defaults The lt F4 gt key allows you to save any changes you have made and exit Setup Press the lt F4 gt key to save your changes 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 changes The lt Enter
24. e take care of the following jobs with precautions Do not remove boards or integrated circuits from their anti static packaging until you are ready to install them 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 is a trademark of American Megatrend Inc IBM PC AT PS 2 VGA are trademarks of International Business Machines Corporation Intel Celeron are trademarks of Intel Corporation Other brand names and trademarks are the properties and registered brands of their respective owners Table of Contents RIDE UE EN ii SR Ne TEE iii Chapter1 lIntroduction enen 1 1 1 dE M n 1 4 2 SPE CHICAUON E 2 1 3 Utilities Supported rrr re reni eicere 3 Chapter 2 Module and Pin Assignments 5 2 1 Module Dimensions and Fixing Holes 5 2 2 Module E3yOl bine coseiis uias se cei id rra Uer aee D RAV SAU Radte as 7 2 3 Installing HeatsInk iustus eiie edid otetbdii itudin ivit ini ide 9 E E T L 1 SONGS M
25. ed Platform Module compatible with TPM1 2 Main and PC Client specification based on Intel LPC Bus Interface e Expansion Interface Four lanes of PCI Express can be configured as 1 PCle x4 2 PCle x2 4 PCle x1 e USB Interface m Six USB ports comply with USB Spec Rev 2 0 m Two USB ports comply with USB Spec Rev 3 0 e SATA Interface Four SATA 6Gb s ports supported through COM Express connector e Graphics Integrated in processor HD graphics Gen 7 5 m 18 24 bit single dual channel LVDS interface m Two DDI ports support HDMI DVI DisplayPort e Ethernet m One 1000 100 10 Base T provided by Intel 1218LM with integrated boot ROM e Audio HD link interface to carrier board for codec e Power Management m ACPI Advanced Configuration and Power Interface e Form Factor m Compact module 95mm x 95mm 2 Introduction CEMS881 COM Express Type 6 Compact Module 1 3 Utilities Supported Chipset driver Graphics driver Ethernet utility and driver ME driver USB 3 0 driver All specifications and images are subject to change without notice Note Introduction 3 CEMS881 COM Express Type 6 Compact Module This page is intentionally left blank 4 Introduction CEM881 COM Express Type 6 Compact Module Chapter 2 Module and Pin Assignments 2 1 Module Dimensions and Fixing Holes 4 6 00 PAD 4 2 70 Hole 4 00 0 00 12 50 23 40 ec cc O oO n m o c
26. efaults from the Save amp Exit menu and press lt Enter gt e Boot Override Select a drive to immediately boot that device regardless of the current boot order AMI BIOS Setup Utility 45 CEMS881 COM Express Type 6 Compact Module This page is intentionally left blank 46 AMI BIOS Setup Utility CEMS881 COM Express Type 6 Compact Module Appendix A Watchdog Timer and GPIO A 1 About Watchdog Timer Software stability is major issue in most application Some embedded systems are not watched by human for 24 hours It is usually too slow to wait for someone to reboot when computer hangs The systems need to be able to reset automatically when things go wrong The watchdog timer gives us solution The watchdog timer is a counter that triggers a system reset when it counts down to zero from a preset value The software starts counter with an initial value and must reset it periodically If the counter ever reaches zero which means the software has crashed the system will reboot A 2 How to Use Watchdog Timer The following example enables configuration using debug tool Enable WDT i 1 Enable configuration O4E87 Un lock super I O O 4E 87 i 2 Select Logic device O 4E 07 O 4F 07 i 3 WDT device enable O 4E 30 O 4F 01 i 4 Set timer unit O 4E FO O 4F 80 i 5 Set base timer O 4E F6 O 4F 0A Set reset time where 0A hex 10sec i 6 Set timer unit second or minute O 4E F5 O4F71 Setti
27. eneral Help F2 Previous Values F3 Optimized Defaults F4 Save amp Exit ESC Exit Version 2 17 1246 Copyright C 2014 American Megatrends Inc SATA Mode Selection Determine how SATA controller s operate Operation modes are AHCI Mode and RAID Mode AMI BIOS Setup Utility 31 CEMS881 COM Express Type 6 Compact Module 32 PCH FW Configuration This screen displays ME Firmware information Aptio Setup Utility Copyright C 2014 American Megatrends Inc Advanced ME FW Version ME Firmware Mode ME Firmware Type ME Firmware SKU 9 5 10 1580 Normal Mode Full Sku Firmware 5MB gt e Select Screen 11 Select Item Enter Select Change Opt Fl General Help F2 Previous Values F3 Optimized Defaults F4 Save amp Exit ESC Exit Version 2 17 1246 Copyright C 2014 American Megatrends Inc AMT Configuration Use this screen to configure AMT parameters Aptio Setup Utility Copyright C 2014 American Megatrends Inc Advanced Intel AMT Disabled Enabled Enable Disable Intel R Active Management Technology BIOS Extension Note iAMT H W is always enabled This option just controls the BIOS extension execution If enabled this requires additional firmware in the SPI device gt e Select Screen 11 Select Item Enter Select Change Opt Fl General Help F2 Previous Values F3 Optimized Defaults
28. enu The Save amp Exit menu allows users to load your system configuration with optimal or fail safe default values Aptio Setup Utility Copyright C 2014 American Megatrends Inc LR e HCH E e eT E ET 21111510 Save amp Exit Exit system setup after saving Discard Changes and Exit the changes Save Changes and Reset Discard changes and Reset Save Options Save Changes Discard Changes Restore Defaults Save as User Defaults Restore User Defaults se Select Screen 11 Select Item Enter Select Change Opt Fl General Help F2 Previous Values F3 Optimized Defaults F4 Save amp Exit ESC Exit Boot Override Version 2 17 1246 Copyright C 2014 American Megatrends Inc e Save Changes and Exit When you have completed the system configuration changes select this option to leave Setup and return to Main Menu Select Save Changes and Exit from the Save amp Exit menu and press lt Enter gt Select Yes to save changes and exit e Discard Changes and Exit Select this option to quit Setup without making any permanent changes to the system configuration and return to Main Menu Select Discard Changes and Exit from the Save amp Exit menu and press lt Enter gt Select Yes to discard changes and exit e Save Changes and Reset 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 t
29. 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 24 AMI BIOS Setup Utility CEM881 COM Express Type 6 Compact Module 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 System Time Date can be set up as described below The Main BIOS setup screen is shown below Aptio Setup Utility Copyright C 2014 American Megatrends Inc Advanced Chipset Boot Security Save amp Exit System Date Version 2 17 1246 Copyright C 2014 American Megatrends Inc BIOS Information Display BIOS information System Date Time 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 Access Level Display the access level of current user AMI BIOS Setup Utility 25 CEM881 COM Express Type 6 Compact Module 4 4 Advanced Menu The Advanced menu also 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 ACPI Settings Trusted Computing CPU C
30. le 4 6 Boot Menu The Boot menu allows users to change boot options of the system Aptio Setup Utility Copyright C 2014 American Megatrends Inc Main Advanced chipset Security Save amp Exit Setup Prompt Timeout E T eene cate Version 2 17 1246 Copyright C 2014 American Megatrends Inc e Setup Prompt Timeout Number of seconds to wait for setup activation key 65535 0xFFFF means indefinite waiting e Bootup NumLock State Use this item to select the power on state for the keyboard NumLock e Quiet Boot Select to display either POST output messages or a splash screen during boot up e Launch PXE OpROM policy Use this item to enable or disable the boot ROM function of the onboard LAN chip when the system boots up e Boot Option Priorities These are settings for boot priority Specify the boot device priority sequence from the available devices 42 AMI BIOS Setup Utility CEM881 COM Express Type 6 Compact Module 4 7 Security Menu The Security menu allows users to change the security settings for the system Aptio Setup Utility Copyright C 2014 American Megatrends Inc Main Advanced chipset Gol Secur Save amp Exit Administrator Password Version 2 17 1246 Copyright C 2014 American Megatrends Inc e Administrator Password Set administrator password e User Password Set user password AMI BIOS Setup Utility 43 CEMS881 COM Express Type 6 Compact Module 4 8 Save amp Exit M
31. logy When enabled a VMM can utilize the additional hardware capabilities It allows a platform to run multiple operating systems and applications independently hence enabling a computer system to work as several virtual systems 30 AMI BIOS Setup Utility CEMS881 COM Express Type 6 Compact Module e SATA Configuration In the SATA Configuration menu you can see the currently installed hardware in the SATA ports During system boot up the BIOS automatically detects the presence of SATA devices Aptio Setup Utility Copyright C 2014 American Megatrends Inc Advanced Enable or disable SATA Device SATA Mode Selection AHCI Serial ATA Port 0 Empty Serial ATA Port 1 Empty Serial ATA Port 2 Empty Serial ATA Port 3 Empty SATA Controller s Enabled Disabled ae Select Screen 11 Select Item Enter Select Change Opt Fl General Help F2 Previous Values F3 Optimized Defaults F4 Save amp Exit ESC Exit Version 2 17 1246 Copyright C 2014 American Megatrends Inc SATA Controller s Enable or disable SATA device Aptio Setup Utility Copyright C 2014 American Megatrends Inc Advanced SATA Controller s Enabled Determine how SATA controller s operate Serial ATA Port 0 Empty Serial ATA Port 1 Empty Serial ATA Port 2 Empty Serial ATA Port 3 Empty SATA Mode Selection ae Select Screen 11 Select Item Enter Select Change Opt Fl G
32. mary IGFX Boot Display HDMI 1024x768 24Bit Secondary IGFX Boot Display Disabled DVI LVDS HDMI Select Secondary Display Device gt e Select Screen 11 Select Item Enter Select Change Opt Fl General Help F2 Previous Values F3 Optimized Defaults F4 Save amp Exit ESC Exit Version 2 17 1246 Copyright C 2014 American Megatrends Inc Secondary IGFX Boot Display Select secondary display device The default is DVI Configuration options are Disabled DVI LVDS and HDMI AMI BIOS Setup Utility 39 CEM881 COM Express Type 6 Compact Module Aptio Setup Utility Copyright C 2014 American Megatrends Inc LVDS Panel Type 800x600 18Bit 1024x768 18Bit 1024x768 24Bit 1280x768 18Bit 1280x800 18Bit 1280x960 18Bit 1280x1024 48Bit 1366x768 18Bit 1366x768 24Bit 1440x900 48Bit 1440x1050 48Bit 1600x900 48Bit 1680x1050 48Bit 1600x1200 48Bit 1920x1080 48Bit 1920x1200 48Bit LVDS Panel Type Version 2 17 1246 Copyright C 2014 American Megatrends Inc LVDS Panel Type Select LVDS panel resolution 40 AMI BIOS Setup Utility CEM881 COM Express Type 6 Compact Module e Memory Configuration This screen shows the system memory information Aptio Setup Utility Copyright C 2014 American Megatrends Inc Version 2 17 1246 Copyright C 2014 American Megatrends Inc AMI BIOS Setup Utility 41 CEM881 COM Express Type 6 Compact Modu
33. mer unit where 1 timer unitzsecond 9 timer unitzminute i 7 Exit configuration O 4E AA Watchdog Timer and GPIO 47 CEM881 COM Express Type 6 Compact Module A 3 About GPIO The onboard GPIO general input and output has 8 bits GPIO 3 and GPOO 3 In default all pins are pulled high with 3 3V level according to main power The BIOS default settings are 4 input pins set to high level and 4 output pins set to low level AA How to Use GPIO The following example enables configuration from CEM881 FINTEK F75111R Sample Program include lt stdio h gt include lt conio h gt include lt bios h gt include lt dos h gt define UCHAR unsigned char define UINT unsigned int pee SMIOBASE OxF000 SMIOBASE can get from PCI device Bus 0 Device 31 Function 3 P ead the value is the IO base address Zdefine SM REG SMIOBASE 3 define SM ADDR SMIOBASE 4 define SM_DATA SMIOBASE 5 define SM_CMD SMIOBASE 2 define SM_STATUS SMIOBASE 0 define SM byteAccess 0x48 define Device_Addr Ox6E depend on hardware designed Low 0x9C High 0x6E UCHAR read smbus UCHAR UCHAR void write smbus UCHAR UCHAR UCHAR define F75111 CHIPID 0x0003 define F75111 VENDORID 0x3419 amp MAIN PROGRAM main UCHAR xch xch2 UINT chipid 0 vendorid 0 Check the Chip ID information xch _read_smbus Device Addr 0x5a Chip ID 1 xch2 _read_smbus Device Addr
34. mple 1 0GHz or more to ensure that the heatsink acts as a proper thermal interface for cooling solutions This CPU module has four assembly holes for installing heatsink plate Use the four screws to secure the heatsink plate to the CEM881 Be careful not to over tighten the Screws em Module and Pin Assignments 9 CEM881 COM Express Type 6 Compact Module 2 4 Switch Settings Properly configure switch settings on the CEM881 to meet your application purpose Below you can find a summary table of all switches and onboard default settings Once the default switch setting needs to be changed please do it under power off condition Note Switch Description Setting Auto Power On W1 1 ON Default Disable SW1 Restore BIOS Optimal Defaults SW1 2 OFF Default Normal Operation 2 4 1 Auto Power On and Restore BIOS Optimal Defaults SW1 If dip1 of SW1 SW1 1 is set to OFF position the system will be automatically power on without pressing soft power button If this jumper is set to ON position it is necessary to manually press soft power button to power on the system The dip2 of SW1 SW1 2 is for restoring BIOS default status Flip SW1 2 to ON position for a few seconds then flip it back to OFF position Doing this procedure can restore BIOS optimal defaults XE CU LE SW1 Disable auto power on Default SW1 1 ON Z aN Enable auto power on SW1 1 OFF O aor Normal operation Default SW1 2 OFF Restore B
35. onboard NIC Intel PCH SKU Name Premium SKU Intel PCH Rev ID 04 82 Wake on LAN Enabled PCH LAN Controller Enabled Disabled gt e Select Screen 11 Select Item Enter Select Change Opt Fl General Help F2 Previous Values F3 Optimized Defaults F4 Save amp Exit ESC Exit Version 2 17 1246 Copyright C 2014 American Megatrends Inc PCH LAN Controller Enable or disable onboard PCH LAN controller Aptio Setup Utility Copyright C 2014 American Megatrends Inc Chipset Intel PCH RC Version 1 8 0 0 Enable or disable integrated Intel PCH SKU Name Premium SKU LAN to wake the system The Intel PCH Rev ID 04 82 Wake On LAN cannot be disabled if ME is on at Sx state PCH LAN Controller Enabled wake on LAN Enabled Disabled gt e Select Screen 11 Select Item Enter Select Change Opt Fl General Help F2 Previous Values F3 Optimized Defaults F4 Save amp Exit ESC Exit Version 2 17 1246 Copyright C 2014 American Megatrends Inc Wake on LAN Enable or disable integrated LAN to wake the system AMI BIOS Setup Utility 37 CEM881 COM Express Type 6 Compact Module 38 System Agent SA Configuration This screen allows users to configure System Agent SA parameters For items marked with gt please press Enter for more options Aptio Setup Utility Copyright C 2014 American Megatrends Inc K Gr
36. onfiguration SATA Configuration PCH FW Configuration AMT Configuration USB Configuration F81803 HW Monitor Second Super IO Configuration Y YYY YYY Y Y For items marked with please press Enter for more options Aptio Setup Utility Copyright C 2014 American Megatrends Inc Chipset Boot Security Save amp Exit gt ACPI Settings Version 2 17 1246 Copyright C 2014 American Megatrends Inc 26 AMI BIOS Setup Utility CEM881 COM Express Type 6 Compact Module e ACPI Settings 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 Aptio Setup Utility Copyright C 2014 American Megatrends Inc ACPI Sleep State s3 only Suspend to D ACPI Sleep State Suspend Disabled S3 only Suspend to RAM Pe Version 2 17 1246 Copyright C 2014 American Megatrends Inc ACPI Sleep State Select the ACPI Advanced Configuration and Power Interface sleep state Configuration options are Suspend Disabled and S3 only Suspend to RAM The only Suspend to RAM option selects ACPI sleep state the system will enter when suspend button is pressed AMI BIOS Setup Utility 27 CEM881 COM Express Type 6 Compact Module e Trusted Computing You can use this screen for TPM Trusted Platform Module configuration It also shows current TPM status information
37. rite_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 GPIOlx input direction printf set F75111 GPIO10 11 12 13 is Level mode n _write_smbus Device_Addr 0x13 0x00 set GPIO1x Level Control xch _read_smbus Device_Addr 0x12 read GPIO1x Status printf Read the GPIO 1 2 3 input data is 02xX n xch BD 136 Change the GPIx input and hit any key to continue n getc xch _ read_ smbus Device_Addr 0x12 read Gages Status printf Read the 6 10 1 2 3 input data is 02x n x D EROR Gem Change the GPIx input and hit any ko to continue n getc xch _read_smbus Device_Addr 0x12 read GPIO1x Status printf Read the GPIO 1 2 3 input data is 02xX n xch void write smbus UCHAR xAddr UCHAR xReg UCHAR xData UCHAR UCHAR while 1 if C check smbus busy 220 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 Ooutp 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 read smbus UCHAR xAddr UCHAR xReg xch xch2 while 1 1 if check smbus busy 2 0 break outp SM REG xReg xdelay because the CPU too fast delay for IO outp SM ADDR
38. t Module e Second Super IO Configuration You can use this screen to select options for the Second Super IO 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 Aptio Setup Utility Copyright C 2014 American Megatrends Inc Serial Port 1 COMl Version 2 17 1246 Copyright C 2014 American Megatrends Inc Serial Port 1 COM1 2 COM2 Set parameters of serial port 1 COM1 2 COM2 Parallel Port Configuration Set parameters of parallel port AMI BIOS Setup Utility 35 CEM881 COM Express Type 6 Compact Module 4 5 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 PCH IO Configuration System Agent SA Configuration For items marked with gt please press Enter for more options Aptio Setup Utility Copyright C 2014 American Megatrends Inc Main Advanced Ch ot Boot Security Save amp Exit PCH IO Configuration Version 2 17 1246 Copyright C 2014 American Megatrends Inc 36 AMI BIOS Setup Utility CEM881 COM Express Type 6 Compact Module e PCH IO Configuration Aptio Setup Utility Copyright C 2014 American Megatrends Inc Chipset Intel PCH RC Version 1 8 0 0 Enable or disable
39. urces E FED40000 FED44FFF System board FED45000 FEDBFFFF Motherboard resources BS FED90000 FED93FFF Motherboard resources Ki FEE00000 FEEFFFFF Motherboard resources Jm FF000000 FFFFFFFF Intel R 82802 Firmware Hub Device E FF000000 FFFFFFFF Motherboard resources Hardware Description 21 CEMS881 COM Express Type 6 Compact Module This page is intentionally left blank 22 Hardware Description CEM881 COM Express Type 6 Compact Module Chapter 4 AMI BIOS Setup Utility The AMI UEFI BIOS provides users with a built in setup program to modify basic system configuration All configured parameters are stored in a flash chip to save the setup information whenever the power is turned off This chapter provides users with detailed description about how to set up basic system configuration through the AMI BIOS setup utility 4 1 Starting To enter the setup screens follow the steps below 1 Turn on the computer and press the Del key immediately After you press the Del key the main BIOS setup menu displays You can access the other setup screens from the main BIOS setup menu such as the Advanced and Chipset menus If your computer cannot boot after making and saving system changes with BIOS setup you can restore BIOS optimal defaults by setting SW1 2 see section 2 4 1 Note It is strongly recommended that you should avoid changing the chipset s def
40. xAddr 1 xdelay because the CPU too fast delay for IO outp SM CMD SM byteAccess xdelay because the CPU too fast delay for IO while 1 if check smbus busy 2 0 break xchzinp SM DATA xdelay because the CPU too fast delay for IO outp SM_STATUS 2 clear interrupt status return xch Watchdog Timer and GPIO 49 CEMS881 COM Express Type 6 Compact Module _check_smbus_busy void UCHAR xch xchzinp SM STATUS if xch amp 0x02 outp SM STATUS 2 clear interrupt status if amp 0x02 return 1 if amp 0x01 return 1 return 0 3 SC int Xxi xxj xxk20 for xxi 0 xxi 0x1000 xxi 1 for xxj 0 xxj 0x100 xxj t XXK 5 T 99 Watchdog Timer and GPIO

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