AXIOMTEK CAPA840 User manual

CAPA840/843
Intel®AtomTM E3845/E3827
Intel®Celeron®J1900
Processors Capa Board
User’s Manual

ii
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 2016 Axiomtek Co., Ltd.
All Rights Reserved
March 2016, Version A4
Printed in Taiwan

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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.

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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 Jumper Settings..................................................................................9
2.3.1 LVDS Brightness Control Mode Setting (JP1) .......................................... 10
2.3.2 LVDS Voltage Selection (JP2 and JP3) .................................................... 10
2.3.3 Restore BIOS Optimal Defaults (JP4)....................................................... 10
2.3.4 COM1 Data/Power Selection (JP6)........................................................... 10
2.3.5 Auto Power On (JP7) .................................................................................11
2.4 Connectors ........................................................................................12
2.4.1 Digital I/O Connector (CN1) ...................................................................... 13
2.4.2 CPU Fan Connector (CN2) ....................................................................... 13
2.4.3 SATA Power Connector (CN4).................................................................. 13
2.4.4 Front Panel Connector (CN6) ................................................................... 14
2.4.5 Inverter Connector (CN7).......................................................................... 15
2.4.6 Internal USB 2.0 Port (CN8)...................................................................... 15
2.4.7 LVDS Connector (CN9)............................................................................. 16
2.4.8 Audio Connector (CN10)........................................................................... 18
2.4.9 Ethernet Port (CN11)................................................................................. 18
2.4.10 USB Ports (CN12 and CN13).................................................................... 18
2.4.11 HDMI Connector (CN14)........................................................................... 19
2.4.12 SMBus Connector (CN15) ........................................................................ 19
2.4.13 VGA Connector (CN16)............................................................................. 19
2.4.14 COM Connectors (CN17 and CN18)......................................................... 20
2.4.15 SATA Connector (CN19) ........................................................................... 20
2.4.16 ATX Power Connector (CN20).................................................................. 21
2.4.17 PCI-Express Mini Card (USB) and mSATA Connector (SCN1) ................ 21
2.4.18 PCI-Express Mini Card Connector (SCN2)............................................... 22
2.4.19 ZIO Expansion Connector (SCN5)............................................................ 23
Chapter 3 Hardware Description ........................... 25

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3.1 Microprocessors ...............................................................................25
3.2 BIOS ...................................................................................................25
3.3 System Memory.................................................................................25
3.4 I/O Port Address Map........................................................................25
3.5 Interrupt Controller (IRQ) Map .........................................................26
3.6 Memory Map ......................................................................................29
Chapter 4 AMI BIOS Setup Utility .......................... 31
4.1 Starting...............................................................................................31
4.2 Navigation Keys ................................................................................31
4.3 Main Menu..........................................................................................33
4.4 Advanced Menu.................................................................................34
4.5 Chipset Menu.....................................................................................50
4.6 Security Menu....................................................................................55
4.7 Boot Menu..........................................................................................56
4.8 Save & Exit Menu ..............................................................................57
Appendix A Watchdog Timer................................... 59
A.1 About Watchdog Timer.....................................................................59
A.2 How to Use Watchdog Timer............................................................59
A.3 Sample Program................................................................................60
Appendix B Digital I/O ............................................. 63
B.1 About Digital I/O................................................................................63
B.2 Digital I/O Programming ...................................................................63
Appendix C BIOS Flash Utility ................................ 67
Appendix D Window®7 Installation Guide ............... 71

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CAPA840/843 Capa Board
Introduction 1
Chapter 1
Introduction
The CAPA840, a 3.5”board, supports Intel®AtomTM E3845/E3827 processors. Meanwhile
CAPA843, a 3.5’board, supports Intel®Celeron®J1900 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 CAPA840/843 have two 204-pin unbuffered SO-DIMM sockets for dual channel DDR3L
1333/1066MHz memory with maximum capacity up to 8GB. There are two Gigabit/Fast
Ethernet ports, one SATA port with transfer rate up to 3Gb/s, one USB 3.0 super speed and
four USB 2.0 high speed compliant, and built-in HD audio codec that can achieve the best
stability and reliability for industrial applications. Additionally, it provides you with unique
embedded features, such as two serial ports (one RS-232/422/485 and one RS-232) and 3.5”
form factor that applies an extensive array of PC peripherals.

CAPA840/843 Capa Board
2 Introduction
1.1 Features
CAPA840 - Intel®AtomTM quad core E3845 (1.91GHz) and dual core E3827 (1.75GHz)
CAPA843 - Intel®Celeron®quad core J1900 (2GHz)
2 DDR3L SO-DIMM supports up to 8GB memory capacity
4 USB 2.0 ports
1 USB 3.0 port
2 COM ports
2 PCI-Express Mini Cards
+10V~+24V DC-in supported
Wide operating temperature supported
1.2 Specifications
CPU
CAPA840
- Intel®AtomTM quad core E3845 1.91GHz.
- Intel®AtomTM dual core E3827 1.75GHz.
CAPA843
- Intel®Celeron®quad core J1900 2GHz.
Thermal Solution
Passive.
Operating Temperature
-20°C~70°C.
BIOS
American Megatrends Inc. UEFI (Unified Extensible Firmware Interface) BIOS.
64Mbit SPI Flash, DMI, Plug and Play.
PXE Ethernet Boot ROM.
System Memory
Two 204-pin unbuffered DDR3L SO-DIMM sockets.
Maximum up to 8GB DDR3L 1333/1066MHz memory.
Note
Please make sure the lower SO-DIMM socket must be inserted and both memory
modules are of the same size, chip width, density and rank. It is suggested to
insert the 4GB DDR3L module on each SO-DIMM socket for better performance.
Onboard Multi I/O
Controller: Fintek F81803U.
Serial Ports: One port for RS-232/422/485 and one port for RS-232.
Serial ATA
One SATA-300 connector.
mSATA supported
USB Interface
Four USB ports on the rear I/O: One for USB 3.0 and three for USB 2.0.
One USB 2.0 port in 4-pin internal connector.

CAPA840/843 Capa Board
Introduction 3
Display
One 15-pin D-Sub as VGA connector.
One 2x20-pin connector for 18/24-bit single/dual channel LVDS and one 8-pin
inverter connector. LVDS resolution is up to 1920x1200 in 24-bit dual channels.
One HDMI.
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
Two RJ-45 LAN ports: Intel®i211AT supports 1000/100/10Mbps Gigabit/Fast
Ethernet with Wake-on-LAN and PXE Boot ROM.
Audio
HD audio compliant with Realtek ALC662.
Line-out and line-in/MIC-in via box header connector.
Expansion Interface
One full-size PCI-Express Mini Card socket complies with PCI-Express Mini Card
Spec. V1.2 but only support USB 2.0.
One full-size PCI-Express Mini Card Socket complies with PCI-Express Mini Card
Spec. V1.2.
Power Input
One 2x2-pin connector.
+10V~+24V DC-in.
AT auto power on function supported.
Power Management
ACPI (Advanced Configuration and Power Interface).
Form Factor
3.5”form factor.
Note
All specifications and images are subject to change without notice.
1.3 Utilities Supported
Chipset and graphics driver
Ethernet driver
Audio driver
XHCI driver
Trusted Execution Engine
Sideband Fabric Device

CAPA840/843 Capa Board
4 Introduction
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CAPA840/843 Capa Board
Board and Pin Assignments 5
Chapter 2
Board and Pin Assignments
2.1 Board Dimensions and Fixing Holes
Top View

CAPA840/843 Capa Board
6 Board and Pin Assignments
Bottom View
Side View

CAPA840/843 Capa Board
Board and Pin Assignments 7
2.2 Board Layout
Top View
Side View

CAPA840/843 Capa Board
8 Board and Pin Assignments
Bottom View

CAPA840/843 Capa Board
Board and Pin Assignments 9
2.3 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 CAPA840/843 to meet your application purpose.
Below you can find a summary table of all jumpers and onboard default settings.
Note
Once the default jumper setting needs to be changed, please do it under power-off
condition.
Jumper
Description
Setting
JP1
LVDS Brightness Control Mode Setting
Default: PWM Mode
1-2 Close
JP2
LVDS +3.3V/+5V Voltage Selection
Default: +3.3V
1-2 Close
JP3
LVDS +12V Voltage Selection
Default: None
None
JP4
Restore BIOS Optimal Defaults
Default: Normal Operation
1-2 Close
JP6
COM1 Data/Power Selection
Default: RS-232 Data
CN17 Pin 1: DCD
3-5 Close
CN17 Pin 8: RI
4-6 Close
JP7
Auto Power On
Default: Disable
1-2 Close

CAPA840/843 Capa Board
10 Board and Pin Assignments
2.3.1 LVDS Brightness Control Mode Setting (JP1)
This jumper enables you to select PWM or voltage control mode for inverter connector
(CN7). These two control modes are for adjusting the brightness of LVDS panel.
2.3.2 LVDS Voltage Selection (JP2 and JP3)
The board supports voltage selection for flat panel displays. Use these jumpers to set
LVDS connector (CN9) pin 1~6 VCCM to +3.3V, +5V or +12V. To prevent hardware
damage, before connecting please make sure that input voltage of the flat panel is
correct.
JP3
2.3.3 Restore BIOS Optimal Defaults (JP4)
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.
2.3.4 COM1 Data/Power Selection (JP6)
The COM1 port has +5V level power capability on DCD and +12V level on RI by setting
this jumper. When this port is set to +5V or +12V level, please make sure its
communication mode is RS-232. You can change the communication mode
(RS-232/422/485) via BIOS setting, see section 4.4.
Function
Setting
PWM mode (Default)
1-2 close
Voltage mode
2-3 close
Function
JP2 Setting
+3.3V level (Default)
1-2 close
+5V level
2-3 close
Function
JP3 Setting
+12V level
1-2 close
N/A
Open
Function
Setting
Normal (Default)
1-2 close
Restore BIOS optimal defaults
2-3 close
Function
Setting
Power: Set CN17 pin 1 to +5V level
1-3 close
Data: Set CN17 pin 1 to DCD (Default)
3-5 close
Power: Set CN17 pin 8 to +12V level
2-4 close
Data: Set CN17 pin 8 to RI (Default)
4-6 close
JP2

CAPA840/843 Capa Board
Board and Pin Assignments 11
2.3.5 Auto Power On (JP7)
If JP7 is enabled for AC power input, the system will be automatically power on without
pressing soft power button. If JP7 is disabled for AC power input, it is necessary to
manually press soft power button to power on the system.
Function
Setting
Disable auto power on (Default)
1-2 close
Enable auto power on
2-3 close

CAPA840/843 Capa Board
12 Board and Pin Assignments
2.4 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 of connectors on the hardware.
Connector
Description
CN1
Digital I/O Connector
CN2
CPU Fan Connector
CN4
SATA Power Connector
CN6
Front Panel Connector
CN7
Inverter Connector
CN8
Internal USB 2.0 Port 1
CN9
LVDS Connector
CN10
Audio Connector
CN11
Ethernet Port 1 and 2
CN12
USB 2.0 Port 6 and 7
CN13
USB 3.0 Port 0 and USB 2.0 Port 2
CN14
HDMI Connector
CN15
SMBus Connector
CN16
VGA Connector
CN17
COM1 Connector
CN18
COM2 Connector
CN19
SATA Connector
CN20
ATX Power Connector
SCN1
PCI-Express Mini Card (USB) and mSATA Connector
SCN2
PCI-Express Mini Card Connector
SCN3
Channel 0 DDR3L SO-DIMM Socket
SCN4
Channel 1 DDR3L SO-DIMM Socket
SCN5
ZIO Expansion Connector

CAPA840/843 Capa Board
Board and Pin Assignments 13
2.4.1 Digital I/O Connector (CN1)
The board is equipped with an 8-channel (3 inputs and 5 outputs) digital I/O connector
that meets requirements for a system customary automation control. The digital I/O can
be configured to control cash drawers and sense warning signals from an Uninterrupted
Power System (UPS), or perform store security control. You may use software
programming to control these digital signals.
2.4.2 CPU Fan Connector (CN2)
This is a3-pin p=2.54mm wafer connector which is compliant with Molex 5045, for fan
interface. Fan is needed for cooling down CPU temperature. You can find fan speed
within BIOS Setup Utility if fan is installed. For further information, see BIOS Setup Utility:
Advanced\H/W Monitor\PC Health Status (see section 4.4).
2.4.3 SATA Power Connector (CN4)
This is a, 4-pin p=2.5mm wafer connector which is compliant with JST B4B-XH-K-S for
interfacing to SATA 2.5" HDD power supply.
Pin
Signal
Pin
Signal
1
Digital Input 0
2
Digital Output 4
3
Digital Input 1
4
Digital Output 3
5
Digital Input 2
6
Digital Output 2
7
Digital Output 0
8
Digital Output 1
9
+5V level
10
GND
Pin
Signal
1
GND
2
+12V level
3
Fan speed feedback
Pin
Signal
1
+12V level
2
GND
3
GND
4
+5V level

CAPA840/843 Capa Board
14 Board and Pin Assignments
2.4.4 Front Panel Connector (CN6)
Power LED
Pin 1 connects anode(+) of LED and pin 5 connects cathode(-) of LED. The power LED
lights up when the system is powered on.
External Speaker and Internal Buzzer
Pin 2, 4, 6 and 8 connect the case-mounted speaker unit or internal buzzer. While
connecting the CPU board to an internal buzzer, please set pin 2 and 4 closed; while
connecting to an external speaker, you need to set pins 2 and 4 opened and connect the
speaker cable to pin 8(+) and pin 2(-).
Power On/Off Button
Pin 9 and 10 connect the power button on front panel to the CPU board, which allows
users to turn on or off power supply.
System Reset Switch
Pin 11 and 12 connect the case-mounted reset switch that reboots your computer
without turning off the power switch. It is a better way to reboot your system for a longer
life of system power supply.
HDD Activity LED
This connection is linked to hard drive activity LED on the control panel. LED flashes
when HDD is being accessed. Pin 13 and 14 connect the hard disk drive to the front
panel HDD LED, pin 13 is assigned as cathode(-) and pin 14 is assigned as anode(+).
Pin
Signal
1
PWRLED+
2
EXT SPK-
3
N.C.
4
Buzzer
5
PWRLED-
6
N.C.
7
N.C.
8
EXT SPK+
9
PWRSW-
10
PWRSW+
11
HW RST-
12
HW RST+
13
HDDLED-
14
HDDLED+