CEM881
4th/5th Generation Intel® CoreTM
Processor COM ExpressTM 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
ii
ESD Precautions
Computer boards have integrated circuits sensitive to static electricity. To prevent chipsets
from electrostatic discharge damage, please 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.
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.
iii
Table of Contents
Disclaimers ..................................................................................................... ii
ESD Precautions ........................................................................................... iii
Chapter 1
Introduction ............................................. 1
1.1
Features ............................................................................................... 1
1.2
Specifications ...................................................................................... 2
1.3
Utilities Supported .............................................................................. 3
Chapter 2
Module and Pin Assignments .................. 5
2.1
Module Dimensions and Fixing Holes ............................................... 5
2.2
Module Layout ..................................................................................... 7
2.3
Installing Heatsink ............................................................................... 9
2.4
Switch Settings ................................................................................. 10
2.4.1
2.5
Auto Power On and Restore BIOS Optimal Defaults (SW1)..................... 10
Connectors ........................................................................................ 11
2.5.1
Chapter 3
COM Express
TM
Connectors (SS1 and SS2) ............................................. 11
Hardware Description ........................... 15
3.1
Microprocessor ................................................................................. 15
3.2
BIOS ................................................................................................... 15
3.3
System Memory ................................................................................. 15
3.4
I/O Port Address Map ........................................................................ 16
3.5
Interrupt Controller (IRQ) Map ......................................................... 18
3.6
Memory Map ...................................................................................... 21
Chapter 4
AMI BIOS Setup Utility .......................... 23
4.1
Starting ............................................................................................... 23
4.2
Navigation Keys ................................................................................ 23
4.3
Main Menu.......................................................................................... 25
4.4
Advanced Menu ................................................................................. 26
4.5
Chipset Menu ..................................................................................... 36
4.6
Boot Menu.......................................................................................... 42
4.7
Security Menu .................................................................................... 43
4.8
Save & Exit Menu .............................................................................. 44
iv
Appendix A
Watchdog Timer and GPIO .................. 47
A.1
About Watchdog Timer ..................................................................... 47
A.2
How to Use Watchdog Timer ............................................................ 47
A.3
About GPIO ........................................................................................ 48
A.4
How to Use GPIO ............................................................................... 48
v
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vi
CEM881 COM Express
TM
Type 6 Compact Module
Chapter 1
Introduction
TM
The CEM881 is a new COM Express Type 6 Compact Module supporting BGA type dual
th th
®
TM
®
core 4 /5 generation Intel Core i7/ i5/ i3 and Celeron processors. It supports the most
updated high speed I/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
TM
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
®
th
th
®
Intel 4 /5 generation Core™ i7/ i5/ i3 and Celeron BGA processors
st
nd
1 bank is onboard DDR3L with memory up to 4GB (optional). 2 bank is one 204-pin
DDR3L 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
1.2
CPU
TM
Type 6 Compact Module
Specifications
®
th
th
®
Intel 4 /5 generation Core™ i7/ i5/ i3 and Celeron BGA processors.
Chipset
Integrated in CPU.
BIOS
American Megatrends Inc. BIOS.
64Mbit SPI Flash, DMI, Plug and Play.
PXE Ethernet Boot ROM, customized default saving features, LPC-free supported,
uses SPI type Flash memory.
System Memory
One 204-pin DDR3L 1333/1066MHz SO-DIMM slot with maximum memory capacity
up to 8GB.
Onboard DDR3L 1333/1066MHz memory supports maximum capacity up to 4GB
(optional).
TPM
Trusted Platform Module compatible with TPM1.2 Main and PC Client specification
based on Intel LPC Bus Interface.
Expansion Interface
Four lanes of PCI-Express (can be configured as 1 PCIe x4, 2 PCIe x2, 4 PCIe x1).
USB Interface
Six USB ports comply with USB Spec. Rev. 2.0.
Two USB ports comply with USB Spec. Rev. 3.0.
SATA Interface
TM
Four SATA 6Gb/s ports supported through COM Express connector.
Graphics
Integrated in processor HD graphics Gen 7.5.
18/24-bit single/dual channel LVDS interface.
Two DDI ports support HDMI/DVI/DisplayPort.
Ethernet
®
One 1000/100/10 Base-T provided by Intel I218LM with integrated boot ROM.
Audio
HD link interface to carrier board for codec.
Power Management
ACPI (Advanced Configuration and Power Interface).
Form Factor
Compact module 95mm x 95mm.
2
Introduction
CEM881 COM Express
1.3
TM
Type 6 Compact Module
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
CEM881 COM Express
TM
Type 6 Compact Module
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4
Introduction
CEM881 COM Express
TM
Type 6 Compact Module
Chapter 2
Module and Pin Assignments
2.1
Module Dimensions and Fixing Holes
Top View
Module and Pin Assignments
5
CEM881 COM Express
TM
Type 6 Compact Module
Bottom View
Side View
6
Module and Pin Assignments
CEM881 COM Express
2.2
TM
Type 6 Compact Module
Module Layout
Top View
Module and Pin Assignments
7
CEM881 COM Express
TM
Type 6 Compact Module
Bottom View
8
Module and Pin Assignments
CEM881 COM Express
2.3
TM
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.
2.
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 example 1.0GHz or more) to ensure that the
heatsink acts as a proper thermal interface for cooling solutions.
3.
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.
Module and Pin Assignments
9
CEM881 COM Express
2.4
TM
Type 6 Compact Module
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
SW1
2.4.1
Description
Setting
Auto Power On
Default: Disable
SW1-1 ON
Restore BIOS Optimal Defaults
Default: Normal Operation
SW1-2 OFF
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.
10
Function
Setting
Disable auto power on (Default)
SW1-1 ON
Enable auto power on
SW1-1 OFF
Normal operation (Default)
SW1-2 OFF
Restore BIOS optimal defaults
SW1-2 ON
SW1
Module and Pin Assignments
CEM881 COM Express
2.5
TM
Type 6 Compact Module
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.
Connector
Description
DIMM1
DDR3L SO-DIMM Connector
SS1
COM ExpressTM Connector
SS2
COM ExpressTM Connector
2.5.1
COM ExpressTM Connectors (SS1 and SS2)
Below table shows the pin assignments for the 220-pin COM Express
Module and Pin Assignments
TM
connectors.
11
CEM881 COM Express
TM
Type 6 Compact Module
Pin
Signal
Pin
Signal
Pin
Signal
Pin
Signal
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32
A33
A34
A35
A36
A37
A38
A39
A40
A41
A42
A43
A44
A45
A46
A47
A48
A49
A50
A51
A52
A53
A54
A55
GND (FIXED)
GBE0_MDI3GBE0_MDI3+
GBE0_LINK100#
GBE0_LINK1000#
GBE0_MDI2GBE0_MDI2+
GBE0_LINK#
GBE0_MDI1GBE0_MDI1+
GND (FIXED)
GBE0_MDI0GBE0_MDI0+
GBE0_CTREF
SUS_S3#
SATA0_TX+
SATA0_TXSUS_S4#
SATA0_RX+
SATA0_RXGND (FIXED)
SATA2_TX+
SATA2_TXSUS_S5#
SATA2_RX+
SATA2_RXBATLOW#
(S)ATA_ACT#
AC/HDA_SYNC
AC/HDA_RST#
GND (FIXED)
AC/HDA_BITCLK
AC/HDA_SDOUT
BIOS_DISABLE#
THRMTRIP#
USB6USB6+
USB_6_7_OC#
USB4USB4+
GND (FIXED)
USB2USB2+
USB_2_3_OC#
USB0USB0+
VCC_RTC
EXCD0_PERST#
EXCD0_CPPE#
LPC_SERIRQ
GND (FIXED)
N.C.
N.C.
GPI0
N.C.
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
B31
B32
B33
B34
B35
B36
B37
B38
B39
B40
B41
B42
B43
B44
B45
B46
B47
B48
B49
B50
B51
B52
B53
B54
B55
GND (FIXED)
GBE0_ACT#
LPC_FRAME#
LPC_AD0
LPC_AD1
LPC_AD2
LPC_AD3
N.C.
N.C.
LPC_CLK
GND (FIXED)
PWRBTN#
SMB_CK
SMB_DAT
SMB_ALERT#
SATA1_TX+
SATA1_TXSUS_STAT#
SATA1_RX+
SATA1_RXGND (FIXED)
SATA3_TX+
SATA3_TXPWR_OK
SATA3_RX+
SATA3_RXWDT
N.C.
AC/HDA_SDIN1
AC/HDA_SDIN0
GND (FIXED)
SPKR
I2C_CK
I2C_DAT
THRM#
USB7USB7+
USB_4_5_OC#
USB5USB5+
GND (FIXED)
USB3USB3+
USB_0_1_OC#
USB1USB1+
EXCD1_PERST#
EXCD1_CPPE#
SYS_RESET#
CB_RESET#
GND (FIXED)
N.C.
N.C.
GPO1
N.C.
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
C25
C26
C27
C28
C29
C30
C31
C32
C33
C34
C35
C36
C37
C38
C39
C40
C41
C42
C43
C44
C45
C46
C47
C48
C49
C50
C51
C52
C53
C54
C55
GND (FIXED)
GND (FIXED)
USB_SSRX0USB_SSRX0+
GND (FIXED)
USB_SSRX1USB_SSRX1+
GND (FIXED)
N.C.
N.C.
GND (FIXED)
N.C.
N.C.
GND (FIXED)
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
GND (FIXED)
N.C.
N.C.
DDI1_HPD
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
GND (FIXED)
DDI2_CTRLCLK_AUX+
DDI2_CTRLDATA_AUXDDI2_DDC_AUX_SEL
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
GND (FIXED)
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
GND (FIXED)
N.C.
N.C.
N.C.
N.C.
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
D16
D17
D18
D19
D20
D21
D22
D23
D24
D25
D26
D27
D28
D29
D30
D31
D32
D33
D34
D35
D36
D37
D38
D39
D40
D41
D42
D43
D44
D45
D46
D47
D48
D49
D50
D51
D52
D53
D54
D55
GND (FIXED)
GND (FIXED)
USB_SSTX0USB_SSTX0+
GND (FIXED)
USB_SSTX1USB_SSTX1+
GND (FIXED)
N.C.
N.C.
GND (FIXED)
N.C.
N.C.
GND (FIXED)
DDI1_CTRLCLK_AUX+
DDI1_CTRLDATA_AUXN.C.
N.C.
N.C.
N.C.
GND (FIXED)
N.C.
N.C.
N.C.
N.C.
DDI1_PAIR0+
DDI1_PAIR0N.C.
DDI1_PAIR1+
DDI1_PAIR1GND (FIXED)
DDI1_PAIR2+
DDI1_PAIR2DDI1_DDC_AUX_SEL
N.C.
DDI1_PAIR3+
DDI1_PAIR3N.C.
DDI2_PAIR0+
DDI2_PAIR0GND (FIXED)
DDI2_PAIR1+
DDI2_PAIR1DDI2_HPD
N.C.
DDI2_PAIR2+
DDI2_PAIR2N.C.
DDI2_PAIR3+
DDI2_PAIR3GND (FIXED)
N.C.
N.C.
N.C.
N.C.
12
Module and Pin Assignments
CEM881 COM Express
TM
Type 6 Compact Module
Pin
Signal
Pin
Signal
Pin
Signal
Pin
Signal
A56
A57
A58
A59
A60
A61
A62
A63
A64
A65
A66
A67
A68
A69
A70
A71
A72
A73
A74
A75
A76
A77
A78
A79
A80
A81
A82
A83
A84
A85
A86
A87
A88
A89
A90
A91
A92
A93
A94
A95
A96
A97
A98
A99
A100
A101
A102
A103
A104
A105
A106
A107
A108
A109
A110
N.C.
GND
PCIE_TX3+
PCIE_TX3GND (FIXED)
PCIE_TX2+
PCIE_TX2GPI1
PCIE_TX1+
PCIE_TX1GND
GPI2
PCIE_TX0+
PCIE_TX0GND(FIXED)
LVDS_A0+
LVDS_A0LVDS_A1+
LVDS_A1LVDS_A2+
LVDS_A2LVDS_VDD_EN
LVDS_A3+
LVDS_A3GND(FIXED)
LVDS_A_CK+
LVDS_A_CKLVDS_I2C_CK
LVDS_I2C_DAT
GPI3
N.C.
N.C.
PCIE0_CK_REF+
PCIE0_CK_REFGND (FIXED)
SPI_POWER
SPI_MISO
GPO0
SPI_CLK
SPI_MOSI
TPM_PP
N.C.
SER0_TX
SER0_RX
GND (FIXED)
SER1_TX
SER1_RX
LID#
VCC_12V
VCC_12V
VCC_12V
VCC_12V
VCC_12V
VCC_12V
GND (FIXED)
B56
B57
B58
B59
B60
B61
B62
B63
B64
B65
B66
B67
B68
B69
B70
B71
B72
B73
B74
B75
B76
B77
B78
B79
B80
B81
B82
B83
B84
B85
B86
B87
B88
B89
B90
B91
B92
B93
B94
B95
B96
B97
B98
B99
B100
B101
B102
B103
B104
B105
B106
B107
B108
B109
B110
N.C.
GPO2
PCIE_RX3+
PCIE_RX3GND (FIXED)
PCIE_RX2+
PCIE_RX2GPO3
PCIE_RX1+
PCIE_RX1WAKE0#
WAKE1#
PCIE_RX0+
PCIE_RX0GND(FIXED)
LVDS_B0+
LVDS_B0LVDS_B1+
LVDS_B1LVDS_B2+
LVDS_B2LVDS_B3+
LVDS_B3LVDS_BKLT_EN
GND(FIXED)
LVDS_B_CK+
LVDS_B_CKLVDS_BKLT_CTRL
VCC_5V_SBY
VCC_5V_SBY
VCC_5V_SBY
VCC_5V_SBY
BIOS_DIS1
N.C.
GND (FIXED)
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
SPI_CS#
N.C.
N.C.
GND (FIXED)
FAN_PWMOUT
FAN_TACHIN
SLEEP#
VCC_12V
VCC_12V
VCC_12V
VCC_12V
VCC_12V
VCC_12V
GND (FIXED)
C56
C57
C58
C59
C60
C61
C62
C63
C64
C65
C66
C67
C68
C69
C70
C71
C72
C73
C74
C75
C76
C77
C78
C79
C80
C81
C82
C83
C84
C85
C86
C87
C88
C89
C90
C91
C92
C93
C94
C95
C96
C97
C98
C99
C100
C101
C102
C103
C104
C105
C106
C107
C108
C109
C110
N.C.
N.C.
N.C.
N.C.
GND (FIXED)
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
GND(FIXED)
N.C.
N.C.
GND(FIXED)
N.C.
N.C.
GND
N.C.
N.C.
N.C.
GND(FIXED)
N.C.
N.C.
N.C.
GND
N.C.
N.C.
GND
N.C.
N.C.
GND (FIXED)
N.C.
N.C.
GND
N.C.
N.C.
GND
N.C.
N.C.
N.C.
GND (FIXED)
N.C.
N.C.
GND
VCC_12V
VCC_12V
VCC_12V
VCC_12V
VCC_12V
VCC_12V
GND (FIXED)
D56
D57
D58
D59
D60
D61
D62
D63
D64
D65
D66
D67
D68
D69
D70
D71
D72
D73
D74
D75
D76
D77
D78
D79
D80
D81
D82
D83
D84
D85
D86
D87
D88
D89
D90
D91
D92
D93
D94
D95
D96
D97
D98
D99
D100
D101
D102
D103
D104
D105
D106
D107
D108
D109
D110
N.C.
TYPE2#
N.C.
N.C.
GND (FIXED)
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
GND
N.C.
N.C.
GND(FIXED)
N.C.
N.C.
SDVO_CLK
N.C.
N.C.
GND
N.C.
N.C.
N.C.
GND(FIXED)
N.C.
N.C.
N.C.
GND
N.C.
N.C.
GND
N.C.
N.C.
GND (FIXED)
N.C.
N.C.
GND
N.C.
N.C.
GND
N.C.
N.C.
N.C.
GND (FIXED)
N.C.
N.C.
GND
VCC_12V
VCC_12V
VCC_12V
VCC_12V
VCC_12V
VCC_12V
GND (FIXED)
Module and Pin Assignments
13
CEM881 COM Express
TM
Type 6 Compact Module
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14
Module and Pin Assignments
CEM881 COM Express
TM
Type 6 Compact Module
Chapter 3
Hardware Description
3.1
Microprocessor
®
TM
®
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
3.4
TM
Type 6 Compact Module
I/O Port Address Map
®
TM
®
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:
16
Hardware Description
CEM881 COM Express
Hardware Description
TM
Type 6 Compact Module
17
CEM881 COM Express
3.5
TM
Type 6 Compact Module
Interrupt Controller (IRQ) Map
®
The interrupt controller (IRQ) mapping list (with CEB94006 baseboard under Windows 7) is
shown as follows:
18
Hardware Description
CEM881 COM Express
Hardware Description
TM
Type 6 Compact Module
19
CEM881 COM Express
20
TM
Type 6 Compact Module
Hardware Description
CEM881 COM Express
3.6
TM
Type 6 Compact Module
Memory Map
®
The memory (with CEB94006 baseboard under Windows 7) mapping list is shown as follows:
Hardware Description
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CEM881 COM Express
TM
Type 6 Compact Module
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Hardware Description
CEM881 COM Express
TM
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.
2.
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 defaults. 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>, <ESC>, <Arrow> keys, and so on.
Some of the navigation keys differ from one screen to another.
Note
AMI BIOS Setup Utility
23
CEM881 COM Express
TM
Type 6 Compact Module
Hot Keys
Description
Left/Right
The Left and Right <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.
+ Plus/Minus
The Plus and Minus <Arrow> keys allow you to change the field value of a
particular setup item.
Tab
The <Tab> key allows you to select setup fields.
F1
The <F1> key allows you to display the General Help screen.
F2
The <F2> key allows you to Load Previous Values.
F3
The <F3> key allows you to Load Optimized Defaults.
F4
The <F4> key allows you to save any changes you have made and exit
Setup. Press the <F4> key to save your changes.
Esc
The <Esc> key allows you to discard any changes you have made and exit
the Setup. Press the <Esc> key to exit the setup without saving your
changes.
Enter
The <Enter> key allows you to display or change the setup option listed for a
particular setup item. The <Enter> key can also allow you to display the
setup sub-screens.
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AMI BIOS Setup Utility
CEM881 COM Express
4.3
TM
Type 6 Compact Module
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.
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 <Arrow> keys. Enter new values through the keyboard. Press the <Tab> key or the
<Arrow> 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
4.4
TM
Type 6 Compact Module
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 Configuration
SATA Configuration
PCH-FW Configuration
AMT Configuration
USB Configuration
F81803 HW Monitor
Second Super IO Configuration
For items marked with “”, please press <Enter> for more options.
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AMI BIOS Setup Utility
CEM881 COM Express
TM
Type 6 Compact Module
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.
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 S3 only (Suspend to
RAM) option selects ACPI sleep state the system will enter when suspend button is
pressed.
AMI BIOS Setup Utility
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CEM881 COM Express
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Type 6 Compact Module
Trusted Computing
You can use this screen for TPM (Trusted Platform Module) configuration. It also shows
current TPM status information.
Security Device Support
Enable or disable BIOS support for security device. The default is Disabled.
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AMI BIOS Setup Utility
CEM881 COM Express
TM
Type 6 Compact Module
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
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Type 6 Compact Module
CPU Configuration
This screen shows the CPU Configuration, and you can change the value of the selected
option.
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 Technology. 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.
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AMI BIOS Setup Utility
CEM881 COM Express
TM
Type 6 Compact Module
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.
SATA Controller(s)
Enable or disable SATA device.
SATA Mode Selection
Determine how SATA controller(s) operate. Operation modes are AHCI Mode and RAID
Mode.
AMI BIOS Setup Utility
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CEM881 COM Express
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Type 6 Compact Module
PCH-FW Configuration
This screen displays ME Firmware information.
AMT Configuration
Use this screen to configure AMT parameters.
Intel AMT
®
Enable or disable Intel Active Management Technology BIOS Extension. The default is
Enabled.
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AMI BIOS Setup Utility
CEM881 COM Express
TM
Type 6 Compact Module
USB Configuration
USB Devices
Displays all detected USB devices.
AMI BIOS Setup Utility
33
CEM881 COM Express
TM
Type 6 Compact Module
F81803 HW Monitor
This screen is for Smart Fan configuration and hardware health status monitoring.
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%, 50%, 75% or 100%.
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AMI BIOS Setup Utility
CEM881 COM Express
TM
Type 6 Compact Module
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 “”, please press <Enter> for more
options.
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
4.5
TM
Type 6 Compact Module
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 “”, please press <Enter> for more options.
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AMI BIOS Setup Utility
CEM881 COM Express
TM
Type 6 Compact Module
PCH-IO Configuration
PCH LAN Controller
Enable or disable onboard PCH LAN controller.
Wake on LAN
Enable or disable integrated LAN to wake the system.
AMI BIOS Setup Utility
37
CEM881 COM Express
TM
Type 6 Compact Module
System Agent (SA) Configuration
This screen allows users to configure System Agent (SA) parameters. For items marked
with “”, please press <Enter> for more options.
Graphics Configuration
Open sub menu for parameters related to graphics configuration.
Memory Configuration
Open sub menu for information related to system memory.
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AMI BIOS Setup Utility
CEM881 COM Express
TM
Type 6 Compact Module
Graphics Configuration
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.
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
TM
Type 6 Compact Module
LVDS Panel Type
Select LVDS panel resolution.
40
AMI BIOS Setup Utility
CEM881 COM Express
TM
Type 6 Compact Module
Memory Configuration
This screen shows the system memory information.
AMI BIOS Setup Utility
41
CEM881 COM Express
4.6
TM
Type 6 Compact Module
Boot Menu
The Boot menu allows users to change boot options of the system.
Setup Prompt Timeout
Number of seconds to wait for setup activation key. 65535(0xFFFF) means indefinite
waiting.
Bootup NumLock State
Use this item to select the power-on state for the keyboard NumLock.
Quiet Boot
Select to display either POST output messages or a splash screen during boot-up.
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.
Boot Option Priorities
These are settings for boot priority. Specify the boot device priority sequence from the
available devices.
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AMI BIOS Setup Utility
CEM881 COM Express
4.7
TM
Type 6 Compact Module
Security Menu
The Security menu allows users to change the security settings for the system.
Administrator Password
Set administrator password.
User Password
Set user password.
AMI BIOS Setup Utility
43
CEM881 COM Express
4.8
TM
Type 6 Compact Module
Save & Exit Menu
The Save & Exit menu allows users to load your system configuration with optimal or fail-safe
default values.
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 & Exit menu
and press <Enter>. Select Yes to save changes and exit.
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 &
Exit menu and press <Enter>. Select Yes to discard changes and exit.
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 take
effect. Select Save Changes and Reset from the Save & Exit menu and press <Enter>.
Select Yes to save changes and reset.
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
& Exit menu and press <Enter>. Select Yes to discard changes and reset.
Save Changes
When you have completed the system configuration changes, select this option to save
changes. Select Save Changes from the Save & Exit menu and press <Enter>. Select Yes
to save changes.
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AMI BIOS Setup Utility
CEM881 COM Express
TM
Type 6 Compact Module
Discard Changes
Select this option to quit Setup without making any permanent changes to the system
configuration. Select Discard Changes from the Save & Exit menu and press <Enter>.
Select Yes to discard changes.
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 & Exit menu and press <Enter>.
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 & Exit menu and press <Enter>.
Restore User Defaults
It automatically sets all Setup options to a complete set of User Defaults when you select
this option. Select Restore User Defaults from the Save & Exit menu and press <Enter>.
Boot Override
Select a drive to immediately boot that device regardless of the current boot order.
AMI BIOS Setup Utility
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CEM881 COM Express
TM
Type 6 Compact Module
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AMI BIOS Setup Utility
CEM881 COM Express
TM
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
1. Enable configuration:
-O 4E 87
-O 4E 87
; Un-lock super I/O
2. Select Logic device:
-O 4E 07
-O 4F 07
3. WDT device enable:
-O 4E 30
-O 4F 01
4. Set timer unit:
-O 4E F0
-O 4F 80
5. Set base timer:
-O 4E F6
-O 4F 0A ; Set reset time (where 0A (hex) = 10sec)
6. Set timer unit (second or minute):
-O 4E F5
-O 4F 71 ; Set timer unit
; (where 1:timer unit=second, 9:timer unit=minute)
7. Exit configuration:
-O 4E AA
Watchdog Timer and GPIO
47
CEM881 COM Express
A.3
TM
Type 6 Compact Module
About GPIO
The onboard GPIO (general input and output) has 8 bits (GPI0~3 and GPO0~3). 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.
A.4
How to Use GPIO
The following example enables configuration (from CEM881 FINTEK F75111R).
Sample Program
/*---------------- INCLUDE FILE ---------------------*/
#include <stdio.h>
#include <conio.h>
#include <bios.h>
#include <dos.h>
#define UCHAR unsigned char
#define UINT
unsigned int
#define SMIOBASE
0xF000
/*****************
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)
#define SM_DATA
(SMIOBASE+5)
#define SM_CMD
(SMIOBASE+2)
#define SM_STATUS
(SMIOBASE+0)
#define SM_byteAccess 0x48
#define Device_Addr
0x6E /*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
/* ------------------ 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,0x5b);
//Chip ID 2
chipid=((UINT)xch2 << 8) + (UINT)xch;
xch=_read_smbus(Device_Addr,0x5d);
//Vendor ID 1
xch2=_read_smbus(Device_Addr,0x5E);
//Vendor ID 2
vendorid=((UINT)xch2 << 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");
//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 0x0A\n");
48
Watchdog Timer and GPIO
CEM881 COM Express
TM
Type 6 Compact Module
printf("GPO0=0, GPO1=1, GPO2=0, GPO3=1\n");
_write_smbus(Device_Addr,0x41,0x0a);
printf("Please check the GPO level and hit any key to continue\n");
getch();
//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);
printf("Please check the GPO level and hit any key to continue\n");
getch();
//set GPIO10,11,12 used
printf("=== GPIO Input Test ===\n");
printf("Set F75111 GPIO1x is used GPIO function\n");
xch=_read_smbus(Device_Addr,0x03);
xch &= 0xE0 ;
_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\n");
_write_smbus(Device_Addr,0x13,0x00);
//set GPIO1x Level Control
xch=_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();
xch=_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();
xch=_read_smbus(Device_Addr,0x12);
//read GPIO1x Status
printf("Read the GPI0,1,2,3 input data is %02X\n",xch);
}
void _write_smbus(UCHAR xAddr,UCHAR xReg, UCHAR xData)
{
while (1)
{ if (_check_smbus_busy()==0) break;
}
outp(SM_REG, xReg);
xdelay();
//because the CPU too fast,delay
outp(SM_ADDR, xAddr);
xdelay();
//because the CPU too fast,delay
outp(SM_DATA, xData);
xdelay();
//because the CPU too fast,delay
outp(SM_CMD, SM_byteAccess);
xdelay();
//because the CPU too fast,delay
outp(SM_STATUS, 02); //clear interrupt status
}
UCHAR _read_smbus(UCHAR xAddr,UCHAR xReg)
{
UCHAR
xch,xch2;
while (1)
{ if (_check_smbus_busy()==0) break;
}
outp(SM_REG, xReg);
xdelay();
//because the CPU
outp(SM_ADDR, xAddr+1);
xdelay();
//because the CPU
outp(SM_CMD, SM_byteAccess);
xdelay();
//because the CPU
while (1)
{ if (_check_smbus_busy()==0) break;
}
xch=inp(SM_DATA);
xdelay();
//because the CPU
outp(SM_STATUS, 2); //clear interrupt
return xch;
}
Watchdog Timer and GPIO
for IO
for IO
for IO
for IO
too fast,delay for IO
too fast,delay for IO
too fast,delay for IO
too fast,delay for IO
status
49
CEM881 COM Express
TM
Type 6 Compact Module
_check_smbus_busy(void)
{
UCHAR
xch;
xch=inp(SM_STATUS);
if (xch & 0x02 ) outp(SM_STATUS, 2);
if ( xch & 0x02 ) return 1;
if ( xch & 0x01 ) return 1;
return 0;
}
//clear interrupt status
xdelay()
{
int
xxi,xxj,xxk=0;
for (xxi=0 ; xxi< 0x1000 ; xxi++) {
for (xxj=0 ; xxj < 0x100 ; xxj++) {
xxk++;
}
}
}
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Watchdog Timer and GPIO