PICO841_843 User's Manual VA2_11-02-2015

PICO841/843
®
Intel AtomTM E3845/E3827
Intel® Celeron® J1900/N2807
Processors Pico-ITX Board
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
November 2015, Version A2
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 and 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 ............................................................................................... 2
1.2
Specifications ...................................................................................... 2
1.3
Utilities Supported .............................................................................. 3
Chapter 2
Board and Pin Assignments .................... 5
2.1
Board Dimensions and Fixing Holes ................................................. 5
2.2
Board Layout ....................................................................................... 7
2.3
Assembly Drawing .............................................................................. 9
2.4
Jumper Settings ................................................................................ 12
2.4.1
2.4.2
2.4.3
2.4.4
2.5
LVDS Voltage Selection (JP1 and JP2) .................................................... 13
Auto Power On (JP4) ................................................................................ 13
LVDS Brightness Control Mode Setting (JP5) .......................................... 13
Restore BIOS Optimal Defaults (JP6) ....................................................... 13
Connectors ........................................................................................ 14
2.5.1
2.5.2
2.5.3
2.5.4
2.5.5
2.5.6
2.5.7
2.5.8
2.5.9
2.5.10
2.5.11
2.5.12
2.5.13
2.5.14
2.5.15
2.5.16
Chapter 3
Board to Board Connectors (CN1 and CN2) ............................................. 15
Fan Power Connector (CN3) ..................................................................... 16
SMBus Connector (CN4) .......................................................................... 16
Power LED Header (CN6) ......................................................................... 16
External Speaker and Internal Buzzer Header (CN7) ............................... 16
LVDS Connector (CN8) ............................................................................. 17
SATA Power Connector (CN9) .................................................................. 19
Inverter Connector (CN10) ........................................................................ 19
DC Power Connector (CN11) .................................................................... 19
VGA Connector (CN12) ............................................................................. 20
Ethernet Connector (LAN1) ....................................................................... 20
SATA Connector (SATA1) .......................................................................... 21
CMOS Battery Connector (BAT1) ............................................................. 21
Full-size PCI-Express Mini Card and mSATA Connector (SCN1) ............. 22
SIM Card Slot (SCN2) ............................................................................... 23
Half-size PCI-Express Mini Card Connector (SCN3) ................................ 23
AX93283 I/O Board ................................ 25
3.1
AX93283 Specifications .................................................................... 25
3.2
AX93283 Dimensions and Fixing Holes .......................................... 25
iv
3.3
AX93283 Board Layout ..................................................................... 26
3.4
AX93283 Jumper Settings ................................................................ 27
3.4.1
3.5
COM1 Data/Power Selection (JP1 and JP2) ............................................ 27
AX93283 Connectors, Switches and LED ....................................... 28
3.5.1
3.5.2
3.5.3
3.5.4
3.5.5
3.5.6
3.5.7
3.5.8
Chapter 4
System Reset Switch (CN1) ...................................................................... 28
Audio Jack (CN2) ...................................................................................... 28
COM1 Connector (CN3) ............................................................................ 29
COM2 Connector (CN4) ............................................................................ 29
System Power Switch (CN5) ..................................................................... 29
Board to Board Connectors (CN9 and CN10) ........................................... 30
USB Connectors (USB1 and USB2) ......................................................... 31
Power and HDD LED Indicator (D1) ......................................................... 31
AX93267 I/O Board ................................ 33
4.1
AX93267 Specifications .................................................................... 33
4.2
AX93267 Dimensions and Fixing Holes .......................................... 34
4.3
AX93267 Board Layout ..................................................................... 35
4.4
AX93267 Connectors ........................................................................ 36
4.4.1
4.4.2
4.4.3
4.4.4
4.4.5
4.4.6
Chapter 5
DC Power Jack (CN1) ............................................................................... 36
DC Power Connector (CN2) ...................................................................... 36
VGA Connector (CN3) ............................................................................... 37
D-Sub VGA Connector (CN4) ................................................................... 37
Ethernet Connector (CN5) ........................................................................ 38
RJ-45 Ethernet Port (CN6) ........................................................................ 38
Hardware Description ........................... 39
5.1
Microprocessors ............................................................................... 39
5.2
BIOS ................................................................................................... 39
5.3
System Memory ................................................................................. 39
5.4
I/O Port Address Map ........................................................................ 40
5.5
Interrupt Controller (IRQ) Map ......................................................... 41
5.6
Memory Map ...................................................................................... 43
Chapter 6
AMI BIOS Setup Utility .......................... 45
6.1
Starting ............................................................................................... 45
6.2
Navigation Keys ................................................................................ 45
6.3
Main Menu.......................................................................................... 46
6.4
Advanced Menu ................................................................................. 47
6.5
Chipset Menu ..................................................................................... 61
6.6
Security Menu .................................................................................... 65
v
6.7
Boot Menu.......................................................................................... 66
6.8
Save & Exit Menu .............................................................................. 67
Appendix A Watchdog Timer .................................... 69
A.1
About Watchdog Timer ..................................................................... 69
A.2
How to Use Watchdog Timer ............................................................ 69
A.3
Sample Program ................................................................................ 70
Appendix B Window® 7 Installation Guide ............... 73
Appendix C BIOS Flash Utility .................................. 75
vi
PICO841/843 Pico-ITX Board
Chapter 1
Introduction
®
TM
The PICO841 is a Pico-ITX board with Intel Atom E3845/E3827 processors. Meanwhile
®
®
PICO843, a Pico-ITX board, supports Intel Celeron J1900/N2807 processors. Both of them
deliver outstanding system performance through high-bandwidth interfaces, multiple I/O
functions for interactive applications and various embedded computing solutions.
The PICO841/843 have one 204-pin unbuffered SO-DIMM socket for DDR3L 1333/1066MHz
memory, with maximum memory capacity up to 8GB. It also features one Gigabit/Fast Ethernet,
one SATA port with transfer rates up to 3Gb/s, four USB 2.0 high speed compliant, and built-in
high definition audio codec that can achieve the best stability and reliability for industrial
applications. Moreover, it has one full-size PCI-Express Mini Card and one half-size
PCI-Express Mini Card which provide good expansions for network connecting. Additionally, it
provides you with unique embedded features, such as two serial ports (RS-232/422/485) and
Pico-ITX form factor that applies an extensive array of PC peripherals. The board can be
enhanced by its built-in watchdog timer function, a special industrial feature not commonly
seen on other motherboards.
Introduction
1
PICO841/843 Pico-ITX Board
1.1








Features
®
1.2

Specifications
CPU



TM
PICO841 - Intel Atom quad core E3845 (1.91GHz), and dual core E3827 (1.75GHz)
®
®
PICO843 - Intel Celeron quad core J1900 (2GHz) and dual core N2807 (1.58GHz)
1 DDR3L SO-DIMM supports up to 8GB memory capacity
4 USB 2.0 ports
2 COM ports
1 full-size PCI-Express Mini Card
1 half-size PCI-Express Mini Card
+12V only DC-in supported
PICO841
®
TM
- Intel Atom quad core E3845 1.91GHz.
®
TM
- Intel Atom dual core E3827 1.75GHz.
PICO843
®
®
- Intel Celeron quad core J1900 2GHz.
®
®
- Intel Celeron dual core N2807 1.58GHz.
Thermal Solution
Fanless but with reserved fan connector.


Operating Temperature
-20°C~70°C.


BIOS
American Megatrends Inc. UEFI (Unified Extensible Firmware Interface) BIOS.
16Mbit SPI Flash, DMI, Plug and Play.
PXE Ethernet Boot ROM.




System Memory
One 204-pin unbuffered DDR3L SO-DIMM socket.
Maximum up to 8GB DDR3L 1333/1066MHz memory.



Onboard Multi I/O
Controller: Fintek F81803U
Serial Ports: Two ports for RS-232/422/485.



Serial ATA
One SATA-300 connector.
mSATA supported.



Expansion
One full-size PCI-Express Mini Card socket complies with PCI-Express Mini Card
Spec. V1.2.

One half-size PCI-Express Mini Card socket complies with PCI-Express Mini Card
Spec. V1.2.


USB Interface
Four USB ports with fuse protection and comply with USB Spec. Rev. 2.0 in pin
headers.

2
Introduction
PICO841/843 Pico-ITX Board

Display
One 16-pin VGA wafer connector.
One 2x20-pin connector for 18-bit/24-bit dual channel LVDS and one 8-pin wafer
connector for inverter control. LVDS resolution is up to 1920x1200 in 24-bit dual
channels.



Trusted Platform Module (TPM)
Controller: ST ST33TPM12LPC via LPC bus interface.
Complies with TPM1.2 main and PC client specification.



Watchdog Timer
1~255 seconds or minutes; up to 255 levels.


Ethernet
One 16-pin wafer connector.
®
One port with Intel i211AT supporting 1000/100/10Mbps Gigabit/Fast Ethernet with
Wake-on-LAN and PXE Boot ROM.



Audio
HD audio compliant with Realtek ALC662.
MIC-in and line-out in pin headers.



Power Input
One 1x4-pin wafer connector.
+12V only DC-in.
AT auto power on function supported.




Power Management
ACPI (Advanced Configuration and Power Interface).


Form Factor
Pico-ITX form factor.

All specifications and images are subject to change without notice.
Note
1.3






Utilities Supported
Chipset and graphics driver
Ethernet driver
Audio driver
XHCI driver
Trusted Execution Engine
Sideband Fabric Device
Introduction
3
PICO841/843 Pico-ITX Board
This page is intentionally left blank.
4
Introduction
PICO841/843 Pico-ITX Board
Chapter 2
Board and Pin Assignments
2.1
Board Dimensions and Fixing Holes
Top View
Board and Pin Assignments
5
PICO841/843 Pico-ITX Board
Bottom View
Side View
6
Board and Pin Assignments
PICO841/843 Pico-ITX Board
2.2
Board Layout
Top View
Board and Pin Assignments
7
PICO841/843 Pico-ITX Board
Bottom View
8
Board and Pin Assignments
PICO841/843 Pico-ITX Board
2.3
Assembly Drawing
Heatsink for PICO841/843 (see image below):
First of all, use the following four screws to secure heatsink on heatspreader.
x4
Board and Pin Assignments
9
PICO841/843 Pico-ITX Board
For thermal dissipation, a heatspreader enables the PICO841/843’s components to dissipate
heat efficiently. Images below illustrate how to install the heatspreader.
Installing Heatspreader
The PICO841/843 has four assembly holes for installing heatspreader plate. Align and firmly
secure the heatspreader plate to the PICO841/843. Be careful not to over-tighten the screws.
x4
10
x4
x4 (8mm)
Board and Pin Assignments
PICO841/843 Pico-ITX Board
Installing Heatspreader and I/O Board
Gently insert I/O board into CN1 and CN2. Align and use the four screws to firmly secure the
heatspreader plate and I/O board to the PICO841/843. Be careful not to over-tighten the
screws. See chapter 3 and chapter 4 for more details of AX93283 and AX93267 I/O boards.
x4
x2 (7mm)
Board and Pin Assignments
x2
x2
x4 (8mm)
x2
11
PICO841/843 Pico-ITX Board
2.4
Jumper Settings
Jumper is a small component consisting of jumper clip and jumper pins. Install jumper clip on 2
jumper pins to close. And remove jumper clip from 2 jumper pins to open. Below illustration
shows how to set up jumper.
Properly configure jumper settings on the PICO841/843 to meet your application purpose.
Below you can find a summary table of all jumpers and onboard default settings.
Once the default jumper needs to be changed, please do it under power-off
condition.
Note
Jumper
JP1
JP2
JP4
JP5
JP6
12
Description
LVDS +12V Voltage Selection
Default: None
LVDS +3.3V/+5V Voltage Selection
Default: +3.3V
Auto Power On
Default: Disable
LVDS Brightness Control Mode Setting
Default: PWM Mode
Restore BIOS Optimal Defaults
Default: Normal Operation
Setting
None
1-2 Close
1-2 Close
1-2 Close
1-2 Close
Board and Pin Assignments
PICO841/843 Pico-ITX Board
2.4.1
LVDS Voltage Selection (JP1 and JP2)
The board supports voltage selection for flat panel displays. Use these jumpers to set
LVDS connector (CN8) pin 1~6 VCCM to +3.3V, +5V or +12V. To prevent hardware
damage, before connecting please make sure that input voltage of flat panel is correct.
Function
JP1 Setting
+12V level
N/A
Close
Open
Function
JP2 Setting
+3.3V level (Default)
+5V level
1-2 close
2-3 close
2.4.2
JP1
JP2
Auto Power On (JP4)
If this jumper is enabled for power input, the system will be automatically power on
without pressing soft power button. If this jumper is disabled for power input, it is
necessary to manually press soft power button to power on the system.
Function
Setting
Disable auto power on (Default)
Enable auto power on
1-2 close
2-3 close
2.4.3
LVDS Brightness Control Mode Setting (JP5)
This jumper enables you to select PWM or voltage control mode for inverter connector
(CN10). These two control modes are for adjusting the brightness of LVDS panel.
Function
Setting
PWM mode (Default)
Voltage mode
1-2 close
3-4 close
2.4.4
Restore BIOS Optimal Defaults (JP6)
Put jumper clip to pin 2-3 for a few seconds then move it back to pin 1-2. Doing this
procedure can restore BIOS optimal defaults.
Function
Setting
Normal (Default)
1-2 close
Restore BIOS optimal defaults
2-3 close
Board and Pin Assignments
13
PICO841/843 Pico-ITX Board
2.5
Connectors
Signals go to 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 all connectors on the hardware.
Connector
Description
CN1
20-pin Board to Board Connector
CN2
40-pin Board to Board Connector
CN3
Fan Power Connector
CN4
SMBus Connector
CN6
Power LED Header
CN7
External Speaker and Internal Buzzer Header
CN8
LVDS Connector
CN9
SATA Power Connector
CN10
Inverter Connector
CN11
DC Power Connector
CN12
VGA Connector
LAN1
Ethernet Port
SATA1
SATA Connector
BAT1
CMOS Battery Connector
SCN1
Full-size PCI-Express Mini Card and mSATA Connector
SCN2
SIM Card Slot
SCN3
Half-size PCI-Express Mini Card Connector
SSODIMM1
DDR3L SO-DIMM Socket
14
Board and Pin Assignments
PICO841/843 Pico-ITX Board
2.5.1
Board to Board Connectors (CN1 and CN2)
The pin assignments of CN1 are given as follows.
Pin
Signal
Pin
Signal
1
3
5
7
9
11
13
15
17
19
DCD2
RXD2
TXD2
DTR2
GND
DCD1
RXD1
TXD1
DTR1
GND
2
4
6
8
10
12
14
16
18
20
DSR2
RTS2
CTS2
RI2
+5V
DSR1
RTS1
CTS1
RI1
+5V
19
1
20
2
The pin assignments of CN2 are given as follows.
Pin
Signal
Pin
Signal
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
MIC
LINE_IN_L
LINE_IN_R
GND
GND
USB1_PWR
USB0_DATAUSB0_DATA+
GND
GND
USB2_PWR
USB2_DATAUSB2_DATA+
GND
GND
+5V
RESET
+5V
HDD_LED
GND
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
LINE_OUT_L
LINE_OUT_R
GND
GND
GND
USB1_PWR
USB1_DATAUSB1_DATA+
GND
GND
USB2_PWR
USB3_DATAUSB3_DATA+
GND
GND
PS_ON
GND
+12V
+12V
Ni
39
1
40
2
®
Note
During Windows 7 installation, the HSIC USB (USB port 2 and 3) can not
be used. Device driver must be installed in advance in order for the HSIC
®
USB to work properly in Windows 7.
It is suggested to insert AX93283 I/O board into CN1 and CN2 (see
chapter 3 for details of AX93283).
Note
Board and Pin Assignments
15
PICO841/843 Pico-ITX Board
2.5.2
Fan Power Connector (CN3)
This is a JST B2B-ZH-K-S 1.5mm pitch wafer connector for fan power interface.
Pin
Signal
1
2
+5V
GND
2.5.3
2
1
SMBus Connector (CN4)
This connector is for SMBus interface. The SMBus (System Management Bus) is a
simple 2-wire bus for the purpose of lightweight communication.
Pin
Signal
1
2
3
SMBus clock
SMBus data
GND
2.5.4
Power LED Header (CN6)
This header is for power LED interface.
Pin
Signal
1
2
+5V
GND
2.5.5
External Speaker and Internal Buzzer Header (CN7)
Pin 1, 2 and 3 connect the case-mounted speaker unit or internal buzzer. While
connecting the CPU board to an internal buzzer, please set pin 2 and 3 closed (default);
while connecting to an external speaker, you need to set pins 2 and 3 opened and
connect the speaker cable to pin 1(+) and pin 2(-).
16
Pin
Signal
1
2
3
EXT SPK+
EXT SPKBuzzer
1
3
Board and Pin Assignments
PICO841/843 Pico-ITX Board
2.5.6
LVDS Connector (CN8)
This board has a 2x20-pin connector for LVDS LCD interface. It is strongly
recommended to use the matching JST SHDR-40VS-B connector for LVDS interface.
Pin 1~6 VCCM can be set to +3.3V, +5V or +12V by setting JP2 or JP1 (see section
2.4.1).
18-bit single channel
Pin
Signal
Pin
Signal
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
VCCM
VCCM
VCCM
N.C
GND
N.C
N.C
GND
N.C
N.C
GND
Channel A D0Channel A D0+
GND
Channel A D1Channel A D1+
GND
Channel A D2Channel A D2+
GND
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
VCCM
VCCM
VCCM
N.C
GND
N.C
N.C
GND
N.C
N.C
GND
N.C
N.C
GND
N.C
N.C
GND
Channel A CLKChannel A CLK+
GND
Board and Pin Assignments
17
PICO841/843 Pico-ITX Board
24-bit single channel
18-bit dual channel
Pin Signal
Pin Signal
Pin Signal
Pin Signal
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
VCCM
VCCM
VCCM
N.C
GND
N.C
N.C
GND
N.C
N.C
GND
Channel A D0Channel A D0+
GND
Channel A D1Channel A D1+
GND
Channel A D2Channel A D2+
GND
VCCM
VCCM
VCCM
N.C
GND
N.C
N.C
GND
N.C
N.C
GND
N.C
N.C
GND
Channel A D3Channel A D3+
GND
Channel A CLKChannel A CLK+
GND
VCCM
VCCM
VCCM
N.C
GND
N.C
N.C
GND
Channel B CLKChannel B CLK+
GND
Channel A D0Channel A D0+
GND
Channel A D1Channel A D1+
GND
Channel A D2Channel A D2+
GND
VCCM
VCCM
VCCM
N.C
GND
Channel B D0Channel B D0+
GND
Channel B D1Channel B D1+
GND
Channel B D2Channel B D2+
GND
N.C
N.C
GND
Channel A CLKChannel A CLK+
GND
24-bit dual channel
Pin Signal
Pin Signal
1
VCCM
2
VCCM
3
VCCM
4
VCCM
5
VCCM
6
VCCM
7
N.C
8
N.C
9
GND
10
GND
11 Channel B D3-
12
Channel B D0-
13 Channel B D3+
14
Channel B D0+
15 GND
16
GND
17 Channel B CLK-
18
Channel B D1-
19 Channel B CLK+
20
Channel B D1+
21 GND
22
GND
23 Channel A D0-
24
Channel B D2-
25 Channel A D0+
26
Channel B D2+
27 GND
28
GND
29 Channel A D1-
30
Channel A D3-
31 Channel A D1+
32
Channel A D3+
33 GND
34
GND
35 Channel A D2-
36
Channel A CLK-
37 Channel A D2+
38
Channel A CLK+
39 GND
40
GND
18
Board and Pin Assignments
PICO841/843 Pico-ITX Board
2.5.7
SATA Power Connector (CN9)
The CN9 is JST B4B-PH-K-S 4-pin 2.0mm pitch wafer connector for SATA power
interface.
Pin
Signal
1
2
3
4
+12V
GND
GND
+5V
2.5.8
Inverter Connector (CN10)
This is a Hirose DF13-8S-1.25C 8-pin connector for inverter. We strongly recommend
you to use the matching DF13-8S-1.25C connector to avoid malfunction.
Pin
Signal
1
2
3
4
5
6
7
8
VBL1 (+12V level)
VBL1 (+12V level)
VBL2 (+5V level)
VBL_ENABLE
GND
GND
GND
VBL Brightness Control
2.5.9
DC Power Connector (CN11)
This is a JST B4B-XH 4-pin 2.5mm pitch wafer connector for DC +12V input. It is
suggested to connect this CN11 to AX93267 I/O board’s CN2.
Pin
Signal
1
2
3
4
+12V
+12V
GND
GND
Board and Pin Assignments
19
PICO841/843 Pico-ITX Board
2.5.10
VGA Connector (CN12)
This is a JST BM16B-SRSS-TB 16-pin wafer connector for VGA interface. Gently
connect this CN12 to AX93267 I/O board’s CN3.
Pin
Signal
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
RSVD
RED
GND
GREEN
GND
BLUE
GND
VCC
DDC_DATA
GND
GND
HSYNC
GND
VSYNC
DDC_CLK
GND
2.5.11
Ethernet Connector (LAN1)
This is a JST BM16B-SRSS-TB 16-pin wafer connector for Ethernet interface. Gently
connect this LAN1 to AX93267 I/O board’s CN5.
20
Pin
Signal
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1000 LAN LED
100 LAN LED
GND
MDI3MDI3+
MDI1MDI2MDI2+
MDI1+
MDI0MDI0+
GND
LAN_VDD33
LAN_LINK_ACT
GND
GND
Board and Pin Assignments
PICO841/843 Pico-ITX Board
2.5.12
SATA Connector (SATA1)
This Serial Advanced Technology Attachment (Serial ATA or SATA) connector is for
high-speed SATA interface. It is a computer bus interface for connecting to devices such
as hard disk drives.
Pin
Signal
1
2
3
4
5
6
7
GND
TXP
TXN
GND
RXN
RXP
GND
2.5.13
1
1
7
1
CMOS Battery Connector (BAT1)
This connector is for CMOS battery interface.
Pin
Signal
1
2
+3.3V
GND
Board and Pin Assignments
21
PICO841/843 Pico-ITX Board
2.5.14
(SCN1)
Full-size PCI-Express Mini Card and mSATA Connector
This is a full-size PCI-Express Mini Card connector on the bottom side complying with
PCI-Express Mini Card Spec. V1.2. It supports either PCI-Express, USB 2.0 or SATA
(mSATA). Since the default setting is mSATA, if the PCI-Express Mini Card is needed to
insert, please refer to section 6.4 to change the setting.
Pin
Signal
Pin
Signal
1
3
5
7
9
11
13
15
17
19
21
WAKE#
No use
No use
CLKREQ#
GND
CLK_PICE_ N
CLK_PICE_ P
GND
No use
No use
GND
mSATA_RXP
/PCIE_RXN
mSATA_RXN
/PCIE_RXP
GND
GND
mSATA_TXN
/PCIE_TXN
mSATA_TXP
/PCIE_TXP
GND
GND
+3.3V_SBY
+3.3V_SBY
GND
No use
No use
No use
No use
2
4
6
8
10
12
14
16
18
20
22
+3.3V_SBY
GND
+V1.5S
SIM PWR
SIM I/O
SIM CLK
SIM RST
SIM VPP
GND
+3.3V_SBY
PLTRST
24
+3.3V_SBY
26
GND
28
30
+V1.5S
SMB_CLK
32
SMB_DATA
34
GND
36
38
40
42
44
46
48
50
52
USB_PN2
USB_PP2
GND
No use
No use
No use
+V1.5S
GND
+3.3V_SBY
23
25
27
29
31
33
35
37
39
41
43
45
47
49
51
22
SCN1
Board and Pin Assignments
PICO841/843 Pico-ITX Board
2.5.15
SIM Card Slot (SCN2)
The SCN2 on the bottom side is for inserting SIM Card. It is mainly used in 3G wireless
network application. In order to work properly, the SIM Card must be used together with
Mini Card which is inserted to SCN1 or SCN3.
Pin
Signal
1
2
3
4
5
6
7
8
SIM PWR
SIM RST
SIM CLK
NC
GND
SIM VPP
SIM I/O
NC
2.5.16
Half-size PCI-Express Mini Card Connector (SCN3)
This is a half-size PCI-Express Mini Card connector on the bottom side complying with
PCI-Express Mini Card Spec. V1.2. It supports either PCI-Express or USB 2.0.
Pin
Signal
Pin
Signal
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
51
WAKE#
No use
No use
CLKREQ#
GND
CLK_PICE_ N
CLK_PICE_ P
GND
No use
No use
GND
PCIE_RXN1
PCIE_RXP1
GND
GND
PCIE_TXN1
PCIE_TXP1
GND
GND
+3.3V_SBY
+3.3V_SBY
GND
No use
No use
No use
No use
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
+3.3V_SBY
GND
+V1.5S
SIM PWR
SIM I/O
SIM CLK
SIM RST
SIM VPP
GND
+3.3V_SBY
PLTRST
+3.3V_SBY
GND
+V1.5S
SMB_CLK
SMB_DATA
GND
USB_PN3
USB_PP3
GND
No use
No use
No use
+V1.5S
GND
+3.3V_SBY
Board and Pin Assignments
SCN3
23
PICO841/843 Pico-ITX Board
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24
Board and Pin Assignments
PICO841/843 Pico-ITX Board
Chapter 3
AX93283 I/O Board
The AX93283 is an I/O expansion board which is suggested to insert carefully into CN1 and
CN2 of PICO841/843. Its specifications and detailed information are given in this chapter.
3.1

AX93283 Specifications
Size


29.25mm x 118mm
Features
Supports audio jack (MIC-in/line-out).
Four USB 2.0.
Serial ports: Two ports for RS-232/422/485.
Power-on, reset and red/green LED.




All specifications and images are subject to change without notice.
Note
3.2
AX93283 Dimensions and Fixing Holes
Top View
AX93283 I/O Board
25
PICO841/843 Pico-ITX Board
Bottom View
3.3
AX93283 Board Layout
Top View
Side View
26
AX93283 I/O Board
PICO841/843 Pico-ITX Board
3.4
AX93283 Jumper Settings
Properly configure jumper settings on the AX93283 I/O board to meet your application purpose.
Below you can find a summary table of all jumpers and onboard default settings.
Once the default jumper setting needs to be changed, please do it under power-off
condition.
Note
Jumper
Description
JP1
COM1 Data/+12V Power Selection
Default: RS-232 Data
CN3 Pin 18: RI
1-2 Close
JP2
COM1 Data/+5V Power Selection
Default: RS-232 Data
CN3 Pin 10: DCD
1-2 Close
3.4.1
Setting
COM1 Data/Power Selection (JP1 and JP2)
The COM1 port has +12V level power capability on RI and +5V level on DCD by setting
JP1 and JP2, respectively. When this port is set to +12V or +5V level, please make sure
its communication mode is RS-232 (see section 6.4).
Function
JP1 Setting
Data: Set CN3 pin 18 to RI (Default)
Power: Set CN3 pin 18 to +12V level
1-2 close
2-3 close
Function
JP2 Setting
Data: Set CN3 pin 10 to DCD (Default)
Power: Set CN3 pin 10 to +5V level
1-2 close
2-3 close
AX93283 I/O Board
27
PICO841/843 Pico-ITX Board
3.5
AX93283 Connectors, Switches and LED
Signals go to 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 all connectors, switches and LED on the hardware.
Connector/Switch/LED
Description
CN1
System Reset Switch
CN2
Audio Jack
CN3
COM1 Connector
CN4
COM2 Connector
CN5
System Power Switch
CN9
40-pin Board to Board Connector
CN10
20-pin Board to Board Connector
USB1~USB2
USB 2.0 Connectors
D1
Power and HDD LED indicator
3.5.1
System Reset Switch (CN1)
This switch reboots your computer without turning off the power supply. It is a better way
to reboot your system for a longer life of the system power supply.
Function
Description
On
Off
Reset system
Keep system status
3.5.2
Audio Jack (CN2)
This is audio jack with HD audio support. Install audio driver, and then attach audio
devices to CN2.
28
Pin Color
Signal
Green
Pink
Line-out
MIC-in
AX93283 I/O Board
PICO841/843 Pico-ITX Board
3.5.3
COM1 Connector (CN3)
CN3 is the lower connector of the double-deck DB-9 connector. Only COM1 comes with
power capability on DCD and RI pins by setting jumpers (see section 3.4.1). The pin
assignments of RS-232/422/485 are listed in table below. If you need COM1 port to
support RS-422 or RS-485, please refer to section 6.4.
Pin
RS-232
RS-422
RS-485
10
11
12
13
14
15
16
17
18
DCD
RXD
TXD
DTR
GND
DSR
RTS
CTS
RI
TXTX+
RX+
RXNo use
No use
No use
No use
No use
DataData+
N.C
N.C.
No use
No use
No use
No use
No use
3.5.4
CN3
COM2 Connector (CN4)
CN4 is the upper connector of the double-deck DB-9 connector. The pin assignments of
RS-232/422/485 are listed in table below. If you need COM2 port to support RS-422 or
RS-485, please refer to section 6.4.
Pin
RS-232
RS-422
RS-485
1
2
3
4
5
6
7
8
9
DCD
RXD
TXD
DTR
GND
DSR
RTS
CTS
RI
TXTX+
RX+
RXNo use
No use
No use
No use
No use
DataData+
N.C
N.C.
No use
No use
No use
No use
No use
3.5.5
CN4
System Power Switch (CN5)
This switch is for turning on/off the system power.
Function
Description
On
Off
Turn on/off system
Keep system status
AX93283 I/O Board
29
PICO841/843 Pico-ITX Board
3.5.6
Board to Board Connectors (CN9 and CN10)
The pin assignments of CN9 are given as follows.
30
Pin
Signal
Pin
Signal
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
MIC
LINE_IN_L
LINE_IN_R
GND
GND
USB1_PWR
USB0_DATAUSB0_DATA+
GND
GND
USB2_PWR
USB2_DATAUSB2_DATA+
GND
GND
+5V
RESET
+5V
HDD_LED
GND
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
LINE_OUT_L
LINE_OUT_R
GND
GND
GND
USB1_PWR
USB1_DATAUSB1_DATA+
GND
GND
USB2_PWR
USB3_DATAUSB3_DATA+
GND
GND
PS_ON
GND
+12V
+12V
Ni
1
39
2
40
AX93283 I/O Board
PICO841/843 Pico-ITX Board
The pin assignments of CN10 are given as follows.
Pin
Signal
Pin
Signal
1
3
5
7
9
11
13
15
17
19
DCD2
RXD2
TXD2
DTR2
GND
DCD1
RXD1
TXD1
DTR1
GND
2
4
6
8
10
12
14
16
18
20
DSR2
RTS2
CTS2
RI2
+5V
DSR1
RTS1
CTS1
RI1
+5V
1
19
2
20
Please gently insert CN9 and CN10 into CN2 and CN1 of PICO841/843.
Note
3.5.7
USB Connectors (USB1 and USB2)
The board comes with two double-deck Universal Serial Bus (compliant with USB 2.0
(480Mbps)) connectors on the rear I/O which are for installing USB peripherals such as
keyboard, mouse, scanner, etc.
Pin
Signal
Pin
Signal
1
2
3
4
+5V
USB1/3_DATAUSB1/3_DATA+
GND
5
6
7
8
+5V
USB2/4_DATAUSB2/4_DATA+
GND
3.5.8
5 6 7 8
1 2 3 4
Power and HDD LED Indicator (D1)
The red LED is linked to Hard Disk Drive (HDD) activity signal. LED flashes every time
HDD is accessed.
The power LED (green) lights up and will remain steady while the system is powered on.
LED Color
Description
Red
Green
Hard disk drive activity
Power on/off
AX93283 I/O Board
31
PICO841/843 Pico-ITX Board
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32
AX93283 I/O Board
PICO841/843 Pico-ITX Board
Chapter 4
AX93267 I/O Board
The AX93267 is an I/O expansion board which is suggested to insert carefully into CN1 and
CN2 of PICO841/843. Its specifications and detailed information are given in this chapter.
4.1

AX93267 Specifications
Size


29.25mm x 118mm
Features
One D-Sub VGA port
One RJ-45 Ethernet port.
DC power jack.



All specifications and images are subject to change without notice.
Note
AX93267 I/O Board
33
PICO841/843 Pico-ITX Board
4.2
AX93267 Dimensions and Fixing Holes
Top View
Side View
34
AX93267 I/O Board
PICO841/843 Pico-ITX Board
4.3
AX93267 Board Layout
Top View
Side View
AX93267 I/O Board
35
PICO841/843 Pico-ITX Board
4.4
AX93267 Connectors
Signals go to 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 all connectors on the hardware.
Connector
Description
CN1
DC Power Jack
CN2
DC Power Connector
CN3
VGA Connector
CN4
D-Sub VGA Connector
CN5
Ethernet Connector
CN6
RJ-45 Ethernet Port
4.4.1
DC Power Jack (CN1)
The CN1 is a DC power jack for DC +12V input.
Pin
Signal
1
2
3
4
GND
GND
+12V
+12V
4.4.2
DC Power Connector (CN2)
This is a 1x4-pin wafer connector for DC +12V. It is suggested to connect the CN2 to
PICO841/843’s CN11.
36
Pin
Signal
1
2
3
4
+12V
+12V
GND
GND
AX93267 I/O Board
PICO841/843 Pico-ITX Board
4.4.3
VGA Connector (CN3)
This is a 16-pin wafer connector for VGA interface. Gently connect this CN3 to
PICO841/843’s CN12.
Pin
Signal
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
RSVD
RED
GND
GREEN
GND
BLUE
GND
VCC
DDC_DATA
GND
GND
HSYNC
GND
VSYNC
DDC_CLK
GND
4.4.4
D-Sub VGA Connector (CN4)
The CN4 is a standard 15-pin D-Sub connector. It is commonly used for VGA display.
This VGA interface configuration can be configured via software utility.
Pin
Signal
Pin
Signal
1
3
5
7
9
11
13
15
RED
BLUE
GND
GND
CRT_VCC
N.C
HSYNC
DDC_CLK
2
4
6
8
10
12
14
GREEN
N.C
CRT_DETE
GND
GND
DDC_DATA
VSYNC
AX93267 I/O Board
37
PICO841/843 Pico-ITX Board
4.4.5
Ethernet Connector (CN5)
This is a 16-pin wafer connector for Ethernet interface. Gently connect this CN5 to
PICO841/843’s LAN1.
Pin
Signal
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1000 LAN LED
100 LAN LED
GND
MDI3MDI3+
MDI1MDI2MDI2+
MDI1+
MDI0MDI0+
GND
LAN_VDD33
LAN_LINK_ACT
GND
GND
4.4.6
RJ-45 Ethernet Port (CN6)
This board has one RJ-45 Ethernet connector. Connection can be established by
plugging one end of the Ethernet cable into this RJ-45 connector and the other end
(phone jack) to a 1000/100/10-Base-T hub.
Pin
L1
L2
L3
L4
A
B
38
Signal
Pin Signal
MDI0P
L5
MDI2P
MDI0N
L6
MDI2N
MDI1P
L7
MDI3P
MDI1N
L8
MDI3N
Active LED (Yellow)
1000 LAN LED (Orange) / 100 LAN LED
(Green)
AX93267 I/O Board
PICO841/843 Pico-ITX Board
Chapter 5
Hardware Description
5.1
Microprocessors
®
TM
®
The PICO841 supports Intel Atom E3845/E3827 processors and PICO843 supports Intel
®
®
Celeron J1900/N2807 processors, which enable your system to operate under Windows 7
environments. The system performance depends on the microprocessor. Make sure all correct
settings are arranged for your installed microprocessor to prevent the CPU from damages.
5.2
BIOS
The PICO841/843 uses AMI Plug and Play BIOS with a single 16Mbit SPI Flash.
5.3
System Memory
The PICO841/843 supports one 204-pin DDR3L SO-DIMM socket for maximum memory
capacity up to 8GB DDR3L SDRAMs. The memory module comes in sizes of 1GB, 2GB, 4GB
and 8GB.
Hardware Description
39
PICO841/843 Pico-ITX Board
5.4
40
I/O Port Address Map
Hardware Description
PICO841/843 Pico-ITX Board
5.5
Interrupt Controller (IRQ) Map
The interrupt controller (IRQ) mapping list is shown as follows:
Hardware Description
41
PICO841/843 Pico-ITX Board
42
Hardware Description
PICO841/843 Pico-ITX Board
5.6
Memory Map
The memory mapping list is shown as follows:
Hardware Description
43
PICO841/843 Pico-ITX Board
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44
Hardware Description
PICO841/843 Pico-ITX Board
Chapter 6
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.
6.1
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 JP6 (see section 2.4.4).
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.
6.2
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
45
PICO841/843 Pico-ITX Board
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.
6.3
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.
46
AMI BIOS Setup Utility
PICO841/843 Pico-ITX Board

System Language
Choose the system default language.

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.
6.4
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
F81803 Super IO Configuration
F81803 HW Monitor
CPU Configuration
IDE Configuration
Miscellaneous Configuration
Trusted Computing
USB Configuration
Utility Configuration
For items marked with “”, please press <Enter> for more options.
AMI BIOS Setup Utility
47
PICO841/843 Pico-ITX Board

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 (Suspend to RAM). The default setting is S3
(Suspend to RAM); this option selects ACPI sleep state the system will enter when
suspend button is pressed.
48
AMI BIOS Setup Utility
PICO841/843 Pico-ITX Board

F81803 Super IO Configuration
You can use this screen to select options for the 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 1~2 Configuration
Set parameters related to serial port 1~2.
AMI BIOS Setup Utility
49
PICO841/843 Pico-ITX Board

Serial Port 1 Configuration
Serial Port
Enable or disable serial port 1. The optimal setting for base I/O address is 3F8h and for
interrupt request address is IRQ4.
COM Port Type
Use this option to set RS-232/422/485 communication mode.
50
AMI BIOS Setup Utility
PICO841/843 Pico-ITX Board

Serial Port 2 Configuration
Serial Port
Enable or disable serial port 2. The optimal setting for base I/O address is 2F8h and for
interrupt request address is IRQ3.
COM Port Type
Use this option to set RS-232/422/485 communication mode.
AMI BIOS Setup Utility
51
PICO841/843 Pico-ITX Board

F81803 HW Monitor
This screen monitors hardware health status.
This screen displays the temperature of system and CPU, system voltages (VCORE and
+5V).
52
AMI BIOS Setup Utility
PICO841/843 Pico-ITX Board

CPU Configuration
This screen shows the CPU Configuration, and you can change the value of the selected
option.
Socket 0 CPU Information
This item is for CPU information.
Intel Virtualization Technology
Enable or disable Intel Virtualization Technology. When enabled, a VMM (Virtual Machine
Mode) 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.
AMI BIOS Setup Utility
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
54
Socket 0 CPU Information
This screen shows CPU Information.
AMI BIOS Setup Utility
PICO841/843 Pico-ITX Board

IDE Configuration
In the IDE 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.
Serial-ATA (SATA)
Enable or disable the SATA Controller feature. The default is Enabled.
SATA Mode
Determine how SATA controller(s) operate. Operation mode options are IDE Mode and
AHCI (Advanced Host Controller Interface) Mode. The default is AHCI Mode.
AMI BIOS Setup Utility
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Serial-ATA Port 0~1
Enable or disable the onboard SATA port 0~1.
MiniCard Switch
This option appears only after SATA Port 1 is enabled. The default is mSATA. If the
PCI-Express Mini Card via PCI-Express interface is needed to insert to SCN1 (see section
2.5.14), please change setting to PCIE.
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
Miscellaneous Configuration
OS Selection
®
®
Use this item to select Windows 8.x or Windows 7 operating system. The default is
®
Windows 8.x.
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
Trusted Computing
This screen provides function for specifying the TPM settings.
Security Device Support
Enable or disable BIOS support for security device. The default setting is Disabled.
TPM State
Once the Security Device Support is Enabled, TPM can be used by the operating system.
Current Status Information
Display current TPM status information.
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
USB Configuration
USB Devices
Display all detected USB devices.
Legacy USB Support
Use this item to enable or disable support for USB device on legacy operating system. The
default setting is Enabled. Auto option disables legacy support if no USB devices are
connected. Disable option will keep USB devices available only for EFI applications.
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
Utility Configuration
BIOS Flash Utility
BIOS flash utility configuration. For more detailed information, please refer to Appendix C.
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AMI BIOS Setup Utility
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6.5
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:
► North Bridge
► South Bridge
For items marked with “”, please press <Enter> for more options.
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
North Bridge
This screen allows users to configure parameters of North Bridge chipset.
Memory Information
Show the information related to system memory.
LVDS Panel Type
Select LVDS panel resolution; see the selection options in image above.
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AMI BIOS Setup Utility
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
South Bridge
This screen allows users to configure parameters of South Bridge chipset.
USB Configuration
This item is for USB configuration settings.
Audio Controller
Control detection of the audio device.
AMI BIOS Setup Utility
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
South Bridge – USB Configuration
XHCI Mode
®
When Advanced\Miscellaneous Configuration\OS Selection is set to Windows 8.x, XHCI
mode is Enabled.
Meanwhile, when Advanced\Miscellaneous Configuration\OS Selection is set to Windows
7, XHCI mode is Smart Auto.
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®
AMI BIOS Setup Utility
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6.6
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.
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6.7
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.

Legacy PXE OpROM
Enable or disable the Preboot eXecution Environment (PXE) boot ROM function of the
onboard LAN chip during system boots up.

Boot Option Priorities [Boot Option #1, #2…]
These are settings for boot priority. Specify the boot device priority sequence from the
available devices.

Hard Drive BBS Priorities
Set the boot order of the specific devices in this group. This option appears only if at least
one device of this group is detected.
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6.8
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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
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.

Launch EFI Shell from filesystem device
Attempt to launch EFI Shell application (Shellx64.efi) from one of the available filesystem
devices.
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Appendix A
Watchdog Timer
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 I/O port base addresses of watchdog timer are 2E (hex) and 2F (hex). The 2E (hex) and
2F (hex) are address and data port respectively.
Assume that program A is put in a loop that must execute at least once every 10ms. Initialize
watchdog timer with a value bigger than 10ms. If the software has no problems; watchdog
timer will never expire because software will always restart the counter before it reaches zero.
Begin
Next
Enable and Initialize
Watchdog Timer
Next
Program “A”
Next
Disable Watchdog
Timer
Next
Watchdog Timer
Begin
Next
Enable and Initialize
Watchdog Timer
Next
Program “A”
Next
Reset Watchdog
Timer
Next
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A.3
Sample Program
Assembly sample code :
;Enable
mov
mov
out
out
WDT:
dx,2Eh
al,87
dx,al
dx,al
;Select
mov
mov
out
mov
mov
out
Logic device:
dx,2Eh
al,07h
dx,al
dx,2Fh
al,07h
dx,al
;Enable
mov
mov
out
mov
mov
out
WDT base address:
dx,2Eh
al,30h
dx,al
dx,2Fh
al,01h
dx,al
;Un-lock super I/O
;Activate WDT:
mov
dx,2Eh
mov
al,0F0h
out
dx,al
mov
dx,2Fh
mov
al,80h
out
dx,al
;Set base timer :
mov
dx,2Eh
mov
al,0F6h
out
dx,al
mov
dx,2Fh
mov
al,Mh
out
dx,al
;M=00h,01h,...FFh (hex),Value=0 to 255
;(see below
Note)
;Set Second or Minute :
mov
dx,2Eh
mov
al,0F5h
out
dx,al
mov
dx,2Fh
mov
al,Nh
;N=71h or 79h(see below
out
dx,al
Note)
Note:
If N=71h, the time base is set to second.
M = time value
00: Time-out Disable
01: Time-out occurs after 1 second
02: Time-out occurs after 2 seconds
03: Time-out occurs after 3 seconds
.
.
FFh: Time-out occurs after 255 seconds
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Watchdog Timer
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If N=79h, the time base is set to minute.
M = time value
00: Time-out Disable
01: Time-out occurs after 1 minute
02: Time-out occurs after 2 minutes
03: Time-out occurs after 3 minutes
.
.
FFh: Time-out occurs after 255 minutes
Watchdog Timer
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This page is intentionally left blank.
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Appendix B
Window® 7 Installation Guide
®
Before you install Windows 7, please follow the instructions below:
1.
Enter BIOS setup utility, and ensure that Advanced\Miscellaneous Configuration\OS
®
Selection option is set to Windows 7 (see section 6.4).
2.
After that, go to Chipset\South Bridge to verify that XHCI Mode is Smart Auto.
®
Windows 7 Installation Guide
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3.
Save changes and exit BIOS utility.
4.
Reboot and you may begin to install Windows 7 on your computer. But please note that
during installation, only the two USB ports (pin 13~16) at CN2 and USB1 at AX93283 can
be used.
5.
After
Windows
7
installation
is
complete,
install
XHCI
driver
(Intel_USB_3.0_xHC_Driver_3.0.4.65_MR4_PV) from the product information CD. After
installing driver, all of the four USB ports can work properly.
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Windows 7 Installation Guide
®
®
®
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Appendix C
BIOS Flash Utility
The BIOS Flash utility is a new helpful function in BIOS setup program. With this function you
can easily update system BIOS without having to enter operating system. In this appendix you
may learn how to do it in just a few steps. Please read and follow the instructions below
carefully.
1.
In your USB flash drive, create a new folder and name it “Axiomtek”, see figure below.
2.
Copy BIOS ROM file (e.g. PICO843X.008) to “Axiomtek” folder.
PICO843X.008
3.
Insert the USB flash drive to your system.
4.
Enter BIOS setup menu and go to Advanced\Utility Configuration. Select BIOS Flash
Utility and press <Enter>.
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5.
BIOS automatically detect all USB drive(s) attached to the system. In this example only
one USB drive is attached to the system. That’s why, you can see only one device is
displayed in figure below.
6.
Select the USB drive containing BIOS ROM file you want to update using the <> or
<> key. Then press <Enter> to get into “Axiomtek” folder.
7.
Now you can see the BIOS ROM file on the screen, press <Enter> to select.
PICO843X.008
8.
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Select Start to flash system BIOS option to begin updating procedure.
BIOS Flash Utility
PICO841/843 Pico-ITX Board
9.
Please wait while BIOS completes the entire flash update process: erase data, write new
data and verify data.
10.
When you see the following figure, press <Enter> to finish the update process. After that
the system will shut down and restart immediately.
BIOS Flash Utility
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