Mini-ITX EMB-A50M
EMB-A50M
AMD T56N/T44R Processor
Mini-ITX
Realtek 8111E Ethernet
2 USB3.0, 10 USB2.0, 4 COM
1 PCI-Express 2.0[x4], 1 Mini PCIe
EMB-A50M Manual Rev.A 2nd Ed
February 2012
Mini-ITX EMB-A50M
Copyright Notice
This document is copyrighted, 2012. All rights are reserved. The
original manufacturer reserves the right to make improvements to
the products described in this manual at any time without notice.
No part of this manual may be reproduced, copied, translated, or
transmitted in any form or by any means without the prior written
permission of the original manufacturer. Information provided in this
manual is intended to be accurate and reliable. However, the
original manufacturer assumes no responsibility for its use, or for
any infringements upon the rights of third parties that may result
from its use.
The material in this document is for product information only and is
subject to change without notice. While reasonable efforts have
been made in the preparation of this document to assure its
accuracy, AAEON assumes no liabilities resulting from errors or
omissions in this document, or from the use of the information
contained herein.
AAEON reserves the right to make changes in the product design
without notice to its users.
i
Mini-ITX EMB-A50M
Acknowledgments
All other products’ name or trademarks are properties of their
respective owners.
Award is a trademark of Award Software International, Inc.
CompactFlash
Association.
AMD, the AMD Arrow logo and combinations thereof are
trademarks of Advanced Micro Devices, Inc.
Microsoft Windows
Corporation.
ITE is a trademark of Integrated Technology Express, Inc.
IBM, PC/AT, PS/2, and VGA are trademarks of International
Business Machines Corporation.
SoundBlaster is a trademark of Creative Labs, Inc.
Please be notified that all other products’ name or trademarks
not be mentioned above are properties of their respective
owners.
™ is a trademark of the Compact Flash
®
is a registered trademark of Microsoft
ii
Mini-ITX EMB-A50M
Packing List
(Standard, not bulk pack)
Before you begin installing your card, please make sure that
the following materials have been shipped:
1 Serial ATA Cable
1 Metal I/O Bracket
1 Utility DVD
1 EMB-A50M
If any of these items should be missing or damaged, please
contact your distributor or sales representative immediately.
iii
Mini-ITX EMB-A50M
Contents
Chapter 1 General Information
1.1 Introduction................................................................ 1-2
1.2 Features....................................................................1-3
1.3 Specifications............................................................ 1-4
Chapter 2 Quick Installation Guide
2.1 Safety Precautions ..................................................2-2
2.2 Location of Connectors and Jumpers ...................... 2-3
2.3 Mechanical Drawing ................................................ 2-7
2.4 List of Jumpers ...................................................... 2-11
2.5 List of Connectors ...................................................2-11
2.6 Setting Jumpers .....................................................2-13
2.7 CMOS Setting (CLRTC) (JP1) ..............................2-14
2.8 CHASSIS INTRUDER (CHASSIS) (JP2)................ 2-14
2.9 Pin Header (USB 56, 78) ........................................ 2-14
2.10 USB 3.0 Connector (USB 3_34) ........................... 2-14
2.11 RS-232 Pin Header (COM 1, 3, 4)........................2-15
2.12 RS-232/422/485 Pin Header (COM 2)..................2-15
2.13 Digital I/O Pin Header (DIO 1)............................... 2-15
2.14 4-pin ATX Power Connector (ATX 1).................... 2-16
2.15 24-pin ATX Power Connector (ATX 2)..................2-16
2.16 SATA Connector (SATA 1~5) ............................... 2-16
2.17 Front Panel Connector (F_Panel)......................... 2-17
iv
Mini-ITX EMB-A50M
2.18 AAFP Header (AAFP) ........................................... 2-17
2.19 FAN Connector (FAN 1, 2).................................... 2-17
Chapter 3 AMI BIOS Setup
3.1 System Test and Initialization. ..................................3-2
3.2 AMI BIOS Setup........................................................ 3-3
Chapter 4 Driver Installation
4.1 Installation………………………………………..……..4-3
Appendix A Programming The Watchdog Timer
A.1 Programming ............................................................A-2
A.2 ITE8771E Watchdog Timer Initial Program………....A-6
Appendix B I/O Information
B.1 I/O Address Map.......................................................B-2
B.2 Memory Address Map...............................................B-4
B.3 IRQ Mapping Chart...................................................B-5
B.4 DMA Channel Assignments.………………………….B-8
Appendix C Mating Connector
C.1 List of Mating Connectors and Cables......................C-2
Appendix D AHCI Setting
D.1 Setting AHCI.............................................................D-2
v
Mini-ITX EMB-A50M
Chapter
1
General
Information
Chapter 1 General Information 1- 1
Mini-ITX EMB-A50M
1.1 Introduction
The EMB-A50M supports AMD T56N/T44R Dual Core/Single
Core processor which when paired with the AMD Hudson
M1/A50M chipset offers a high performance computing platform
with low power consumption. This new product supports two
240-pin DDR3 DIMMs at speeds of 800/1066, up to 8GB. Five
SATA interfaces provide ample storage. With dual Gigabit
Ethernet, four COM ports, ten USB2.0 ports, two USB3.0 ports,
one keyboard/mouse port and one Line-in, Mic-in, Line-out port,
the EMB-A50M meets the requirements of today’s demanding
applications.
Display requirements are met with an abundance of interfaces
such as HDMI and DVI-I. Display memory is shared from the
system memory up to 512MB. EMB-A50M has an integrated
AMD Radeon™ HD 6310 graphics engine, up to 1920 x 1200
for HDMI/DVI output resolutions.
With all of its integrated features, the EMB-A50M strikes a
balance of performance and price. This versatile product t arget s
Industrial Automation, Entertainment, Networking, KIOSK/POS,
Transportatio n, Banking, Healthcare a nd Digital Signage
applications that require high performance and high reliability.
Chapter 1 General Information 1-2
Mini-ITX EMB-A50M
1.2 Features
Onboard AMD Fusion T56N/T44R Dual-Core/Single Core
Processor
AMD Hudson M1/A50M
240-pin DDR3 800/1066 DIMM x 2, Max. 8GB
Gigabit Ethernet x 2
HDMI, DVI-I
SATA 6.0Gb/S x 5
USB3.0 x 2, USB2.0 x 10, COM x 4
PCI-Express x 1, Mini PCIe x 1
Chapter 1 General Information
1-3
Mini-ITX EMB-A50M
1.3 Specifications
System
Processor
Onboard AMD Fusion T56N/T44R
Dual-Core/Single Core Processor
System Memory 240-pin DDR3 800/1066 DIMM x
2, Max. 8GB
Chipset AMD Hudson M1/A50M
I/O Chipset ITE IT8771E
Ethernet Realtek 8111E for
10/100/1000Base-TX, RJ-45 x 2
BIOS AMI BIOS, 32 Mb Flash ROM,
PnP, DMI 2.0, WfM 2.0, ACPI
2.0a, SM BIOS 2.6
Wake On LAN Yes
Watchdog Timer System reset: 1~255 steps
programmable
H/W Status Monitoring Supports system temperature,
voltage and cooling fan status
monitoring
Expansion Interface PCI-Express 2.0 [x4] x 1, Mini
PCIe (Half size x 1)
Battery Lithium battery
Power Requirement Standard 24-pin ATX connector x
1, 4-pin 12V ATX connector x 1
Board Size 6.7”(L) x 6.7”(W) (170 mm x 170
mm)
Gross Weight 1.1 lb (0.5 Kg)
Operating Temperature 32˚F~ 140˚F (0˚C ~ 60˚C)
Storage Temperature -40˚F~ 176˚F (-40˚C ~ 80˚C)
Chapter 1 General Information 1-4
Mini-ITX EMB-A50M
Operating Humidity 0%~90% relative humidity,
non-condensing
Display
Chipset Integrated AMD Radeon™ HD
6310 (6250 for T44R) graphics
engine
Memory Shared system memory up to
512MB
Resolution Up to 1920 x 1200 for HDMI/DVI
output resolution
Video Interface HDMI, DVI-I
I/O
Storage SATA 6.0Gb/s x 5 (su pports AHCI
mode)
Serial Port RS-232 x 3, RS-232/422/485 x 1
Audio Line-in, Mic-in, Line-out
USB USB3.0 x 2, USB2.0 x 10
Digital I/O Supports 8-bit (Programmable)
PS/2 Port Keyboard + Mouse x 1
Chapter 1 General Information
1-5
Mini-ITX EMB-A50M
Chapter
2
Quick
Inst
Chapter 2 Quick Installation Guide 2 - 1
allation
Guide
Mini-ITX EMB-A50M
2.1 Safety Precautions
Always completely disconnect the power cord
from your board whenever you are working on
it. Do not make connections while the power is
on, because a sudden rush of power can
damage sensitive electronic components.
Always ground yourself to remove any static
charge before touching the board. Modern
electronic devices are very sensitive to static
electric charges. Use a grounding wrist strap at
all times. Place all electronic components on a
static-dissipative surface or in a static-shielded
bag when they are not in the chassis
Chapter 2 Quick Installation Guide 2 - 2
Mini-ITX EMB-A50M
2.2 Location of Connectors and Jumpers
Component Side (With Fan)
Chapter 2 Quick Installation Guide 2 - 3
Mini-ITX EMB-A50M
Solder Side (With Fan)
Chapter 2 Quick Installation Guide 2 - 4
Mini-ITX EMB-A50M
Component Side (Fanless)
Chapter 2 Quick Installation Guide 2 - 5
Mini-ITX EMB-A50M
Solder Side (Fanless)
Chapter 2 Quick Installation Guide 2 - 6
Mini-ITX EMB-A50M
2.3 Mechanical Drawing
Component Side (with Fan)
Chapter 2 Quick Installation Guide 2 - 7
Mini-ITX EMB-A50M
Solder Side (with Fan)
Chapter 2 Quick Installation Guide 2 - 8
Mini-ITX EMB-A50M
Component Side (Fanless)
Chapter 2 Quick Installation Guide 2 - 9
Mini-ITX EMB-A50M
Solder Side (Fanless)
Chapter 2 Quick Installation Guide 2 - 10
Mini-ITX EMB-A50M
2.4 List of Jumpers
The board has a number of jumpers that allow you to configure your
system to suit your application.
The table below shows the function of each of the board's jumpers:
Label Function
CLRTC CMOS Setting Selection
CHASSIS CHASSIS INTRUDER
2.5 List of Connectors
The board has a number of connectors that allow you to configure your
system to suit your application.
The table below shows the function of each of the board's connectors:
Label Function
DIMM1 DDR3 SOCKET
DIMM2 DDR3 SOCKET
24P ATX POWER ATX POWER SUPPLY INPUT
4P ATX POWER ATX POWER SUPPLY INPUT
COM1.2.3.4 ONLY COM2 SUPPORT RS/422/485
WLAN MINI CARD SOCKET
SATA1.2.3.4.5 SATA INTERFACE
USB56.78 USB2.0 INTERFACE
LAN1+USB*2 GIGA LAN+USB2.0
LAN2+USB*2 GIGA LAN+USB2.0
DVI DVI-I OUTPUT
HDMI HDMI OUTPUT
Chapter 2 Quick Installation Guide 2 - 11
Mini-ITX EMB-A50M
KB_USB34 KB/MS+USB2.0
USB3_34 USB3.0
CN2
CN11 PCIE x4 Slots
F_Panel PWRBTN,RESET,PW/HD LED
SPDIF
LPC_Debug Debug use
DIMM1 DDR3 SOCKET
DIMM2 DDR3 SOCKET
24P ATX POWER ATX POWER SUPPLY INPUT
4P ATX POWER ATX POWER SUPPLY INPUT
COM1.2.3.4 ONLY COM2 SUPPORT RS/422/485
WLAN MINI CARD SOCKET
SATA1.2.3.4.5 SATA INTERFACE
USB56.78 USB2.0 INTERFACE
LAN1+USB*2 GIGA LAN+USB2.0
LAN2+USB*2 GIGA LAN+USB2.0
DVI DVI-I OUTPUT
HDMI HDMI OUTPUT
Digital I/O
SPDIF OUT
KB_USB34 KB/MS+USB2.0
USB3_34 USB3.0
Chapter 2 Quick Installation Guide 2 - 12
Mini-ITX EMB-A50M
2.6 Setting Jumpers
You configure your card to match the needs of your application by
setting jumpers. A jumper is the simplest kind of electric switch. It
consists of two metal pins and a small metal clip (often protected by a
plastic cover) that slides over the pins to connect them. To “close” a
jumper you connect the pins with the clip.
To “open” a jumper you remove the clip. Sometimes a jumper will have
three pins, labeled 1, 2 and 3. In this case you would connect either
pins 1 and 2 or 2 and 3.
3
2
1
Open Clo sed Cl osed 2-3
A pair of needle-nose pliers may be helpful when working with jumpers.
If you have any doubts about the best hardware configuration for your
application, contact your local distributor or sales representative before
you make any change.
Generally, you simply need a standard cable to make most
connections.
Chapter 2 Quick Installation Guide 2 - 13
Mini-ITX EMB-A50M
2.7 CMOS Setting (CLRTC) (JP1)
JP1 Function
1-2 Normal (Default)
2-3 Clear CMOS
2.8 CHASSIS INTRUDER (CHASSIS) (JP2)
JP2 Function
3-4 Normal
OPEN CHASSIS INTRUDER
2.9 Pin Header (USB 56, 78)
Pin Signal Pin Signal
1 +5V 2 GND
3 USBD1- 4 GND
5 USBD1+ 6 USBD2+
7 GND 8 USBD29 GND 10 +5V
2.10 USB 3.0 Connector (USB 3_34)
Pin Signal Pin Signal
1 +5V_USB3_2_P1 11 +5V_USB3_2_P2
2 U3_2_U3RXDN1 12 U3_2_U3RXDN2
3 U3_2_U3RXDP1 13 U3_2_U3RXDP2
4 GND 14 GND
5 U3_2_U3TXDN1 15 U3_2_U3TXDN2
6 U3_2_U3TXDP1 16 U3_2_U3TXDP2
7 GND 17 GND
8 U3_2_U2DN1 18 U3_2_U2DN2
9 U3_2_U2DP1 19 U3_2_U2DP2
10 N.C 20 N.C
Chapter 2 Quick Installation Guide 2 - 14
Mini-ITX EMB-A50M
2.11 RS-232 Pin Header (COM 1, 3, 4)
Pin Signal Pin Signal
1 DCD 2 RXD
3 TXD 4 DTR
5 GND 6 DSR
7 RTS 8 CTS
9 RI 10 N.C
2.12 RS-232/422/485 Pin Header (COM 2)
Pin Signal Pin Signal
1 DCD 2 RXD
3 TXD 4 DTR
5 GND 6 DSR
7 RTS 8 CTS
9 RI 10 N.C
2.13 Digital I/O Pin Header (DIO 1)
The memory address is 0xFED80180~ 0xFED80187.
Pin Signal Pin Signal
1 DIO1 2 DIO2
3 DIO3 4 DIO4
5 DIO5 6 DIO6
7 DIO7 8 DIO8
9 +5V 10 GND
BIOS Setting Connector
Definition
DIO_P#8 @MIO:FED80187 Pin 8 GPIOD135
DIO_P#7 @MIO:FED80186 Pin 7 GPIOD134
Chapter 2 Quick Installation Guide 2 - 15
AMD Chipset GPIO
Address
Mini-ITX EMB-A50M
DIO_P#6 @MIO:FED80185 Pin 6 GPIOD133
DIO_P#5 @MIO:FED80184 Pin 5 GPIOD132
DIO_P#4 @MIO:FED80183 Pin 4 GPIOD131
DIO_P#3 @MIO:FED80182 Pin 3 GPIOD130
DIO_P#2 @MIO:FED80181 Pin 2 GPIOD129
DIO_P#1 @MIO:FED80180 Pin 1 GPIOD128
2.14 4-pin ATX Power Connector (ATX 1)
Pin Signal Pin Signal
1 GND 2 GND
3 +12V 4 +12V
2.15 24-pin ATX Power Connector (ATX 2)
Pin Signal Pin Signal
1 +3.3V 2 +3.3V
3 GND 4 +5V
5 GND 6 +5V
7 GND 8 PWROK
9 +5VSB 10 +12V
11 +12V 12 +3.3V
13 +3.3V 14 -12V
15 GND 16 PS_ON
17 GND 18 GND
19 GND 20 NC
21 +5V 22 +5V
23 +5V 24 GND
2.16 SATA Connector (SATA 1~5)
Pin Signal Pin Signal
1 GND 2 TXP
Chapter 2 Quick Installation Guide 2 - 16
Mini-ITX EMB-A50M
3 TXN 4 GND
5 RXN 6 RXP
7 GND
2.17 Front Panel Connector (F_Panel)
Pin Signal Pin Signal
1 Power On Button (-) 2
3 HDD LED(-) 4
5
SPEAKER
7
Power LED (-)
9
Reset Switch (-)
Power On Button (+)
HDD LED(+)
6
5V
8
Power LED (+)
10
Reset Switch (+)
2.18 AAFP Header (AAFP)
Pin Signal Pin Signal
1 MIC2_R 2 GND
2 MIC2_L 4 N.C
3 LINE2_R 6 MIC SENSOR resister
4 A_JD_FRONT 8 N.C
5 LINE2_L 10 LINE IN SENSOR resister
2.19 FAN Connector (FAN 1, 2)
Pin Signal Pin Signal
1 GND 2 +12V
3 FAN_TAC 4 FAN_CTL
Chapter 2 Quick Installation Guide 2 - 17
Mini-ITX EMB-A50M
Below Table for China RoHS Requirements
产品中有毒有害物质或元素名称及含量
AAEON Main Board/ Daughter Board/ Backplane
有毒有害物质或元素
部件名称
印刷电路板
及其电子组件
外部信号
连接器及线材
O：表示该有毒有害物质在该部件所有均质材料中的含量均在
SJ/T 11363-2006 标准规定的限量要求以下。
X：表示该有毒有害物质至少在该部件的某一均质材料中的含量超出
SJ/T 11363-2006 标准规定的限量要求。
备注：此产品所标示之环保使用期限，系指在一般正常使用状况下。
铅
(Pb)汞 (Hg)镉 (Cd)
× ○ ○ ○ ○ ○
× ○ ○ ○ ○ ○
六价铬
(Cr(VI))
多溴联苯
(PBB)
多溴二苯醚
(PBDE)
Chapter 2 Quick Installation Guide 2 - 18
Mini-ITX EMB-A50M
Chapter
3
AMI
BIOS Setup
Chapter 3 AMI BIOS Setup 3-1
Mini-ITX EMB-A50M
3.1 System Test and Initialization
These routines test and initialize board hardware. If the routines
encounter an error during the tests, you will either hear a few short
beeps or see an error message on the screen. There are two kinds
of errors: fatal and non-fatal. The system can usually continue the
boot up sequence with non-fatal errors.
System configuration verification
These routines check the current system configuration against the
values stored in the CMOS memory. If they do not match, the
program outputs an error message. You will then need to run the
BIOS setup program to set the configuration information in memory.
There are three situations in which you will need to change the
CMOS settings:
1. You are starting your system for the first time
2. You have changed the hardware attached to your system
3. The CMOS memory has lost power and the configuration
information has been erased.
The EMB-A50M CMOS memory has an integral lithium battery
backup for data retention. However, you will need to replace the
complete unit when it runs down.
Chapter 3 AMI BIOS Setup 3-2
Mini-ITX EMB-A50M
3.2 AMI BIOS Setup
AMI BIOS ROM has a built-in Setup program that allows users to
modify the basic system configuration. This type of information is
stored in battery-backed CMOS RAM so that it retains the Setup
information when the power is turned off.
Entering Setup
Power on the computer and press <Del> or <F2> immediately. This
will allow you to enter Setup.
Main
Set the date, use tab to switch between date elements.
Advanced
Advanced BIOS Features Setup including TPM, ACPI, etc.
Chipset
host bridge parameters.
Boot
Enables/disable quiet boot option.
Security
Set setup administrator password.
Save&Exit
Exit system setup after saving the changes.
Chapter 3 AMI BIOS Setup 3-3
Mini-ITX EMB-A50M
Chapter
4
Driver
Inst
.
Chapter 4 Driver Installation 4 -1
allation
Mini-ITX EMB-A50M
The EMB-A50M comes with an Autorun DVD-ROM that contains all
drivers and utilities that can help you to install the driv
er
automatically.
Insert the driver DVD, the driver DVD-title will automatically start
and show the installation guide. If not, please follow the sequence
below to install the drivers.
Follow the sequence below to install the drivers:
Step 1 – Install Chipset Driver
Step 2 – Install AMD Total Driver
Step 3 – Install LAN Device
Step 4 – Install Audio Driver
Step 5 – Install USB3.0 Driver
Step 6 – Install AHCI Driver
Please read instructions below for further detailed installations.
Chapter 4 Driver Installation 4 -2
Mini-ITX EMB-A50M
4.1 Installation:
Insert the EMB-A50M DVD-ROM into the DVD-ROM drive. And
install the drivers from Step 1 to Step 6 in order.
Step 1 – Install Chipset Driver
1. Click on the Step 1 - CPU folder and double click on the
setup.exe file
2. Follow the instructions that the window shows
3. The system will help you install the driver automatically
Note: This driver is for Windows® XP only. You do not need to install this
®
driver if the OS is Windows
7.
Step 2 – Install AMD Total Driver
1. Click on the Step 2 - AMD Total Driver folder and select
the OS folder your system is
2. Double click on the Setup.exe file located in each OS
folder
3. Follow the instructions that the window shows
4. The system will help you install the driver automatically
Step 3 –Install LAN Driver
1. Click on the Step 3 - LAN folder and select the OS folder
your system is
2. Double click on the setup.exe file located in each OS folder
3. Follow the instructions that the window shows
The system will help you install the driver automatically
4.
Chapter 4 Driver Installation 4 -3
Mini-ITX EMB-A50M
Step 4 –Install Audio Driver
1. Click on the Step 4 - Audio folder and select the OS folder
for your system
2. Double click on the Setup.exe file located in each OS folder
3. Follow the instructions that the window shows
4. The system will help you install the driver automatically
Step 5 –Install USB3.0 Driver
1. Click on the Step 5 - USB3.0 folder and double click on the
setup.exe
2. Follow the instructions that the window shows
3. The system will help you install the driver automatically
Step 6 –Install AHCI Driver
Please refer to the Appendix D AHCI Setting
Chapter 4 Driver Installation 4 -4
Mini-ITX EMB-A50M
A
Appendix
Programming the
atchdog Timer
W
Appendix A Programming the Watchdog Timer A-1
Mini-ITX EMB-A50M
A.1 Programming
EMB-A50M utilizes ITE 8771E chipset as its watchdog
timer controller. Below are the procedures to complete its
configuration and the AAEON initial watchdog timer
program is also attached based on which you can
develop a customized program to fit your application.
Configuring Sequence Description
After the hardware reset or power-on reset, the ITE 8771E enters
the normal mode with all logical devices disabled
except KBC. The initial state (enable bit ) of this logical device
(KBC) is determined by the state of pin 121 (DTR1#) at the falling
edge of the system reset during power-on reset.
Appendix A Programming the Watchdog Timer A-2
Mini-ITX EMB-A50M
There are three steps to complete the configuration setup: (1) Enter
the MB PnP Mode; (2) Modify the data of configuration re gisters; (3)
Exit the MB PnP Mode. Undesired result may occur if the MB PnP
Mode is not exited normally.
(1) Enter the MB PnP Mode
To enter the MB PnP Mode, four special I/O write operations are to
be performed during Wait for Key st ate. To ensure the initial state of
the key-check logic, it is necessary to p erform four write opera-tio ns
to the Special Address port (2EH). Two different enter keys are
provided to select configuration ports (2Eh/2Fh) of the next step.
(2) Modify the Data of the Regist ers
All configuration registers can be accessed after entering the MB
PnP Mode. Before accessing a selected register, the content of
Index 07h must be changed to the LDN to which the register
belongs, except some Global registers.
(3) Exit the MB PnP Mode
Set bit 1 of the configure control register (Index=02h) to 1 to exit the
MB PnP Mode.
Appendix A Programming the Watchdog Timer A-3
Mini-ITX EMB-A50M
WatchDog Ti mer Configuration Registers
07h 71h R/W 00h Watch Dog Timer Control Register
07h 72h R/W 20h Watch Dog Timer Configuration Register
07h 73h R/W 38h Watch Dog Timer Time-out Value (LSB) Register
07h 74h R/W 00h Watch Dog Timer Time-out Value (MSB) Register
Configure Control (Index=02h)
This register is write only. Its values are not sticky; that is to say, a
hardware reset will automatically clear the bits, and does not
require the software to clear them.
Bit Description
7-2 Reserved
1
0
Returns to the Wait for Key state. This bit is used when the
configuration sequence is completed.
Resets all logical devices and restores configuration
registers to their power-on states.
Watch Dog T i mer Control Register (Index=71h, Default=00h)
Bit Description
7 WDT is reset upon a CIR interrupt.
6 WDT is reset upon a KBC (Mouse) interrupt.
5 WDT is reset upon a KBC (Keyboard) interrupt.
4 Reserved
3-2 Reserved
1
0 WDT Status
Appendix A Programming the Watchdog Timer A-4
Force Time-out
This bit is self-cleared.
Mini-ITX EMB-A50M
1: WDT value is equal to 0.
0: WDT value is not equal to 0.
Watch Dog Timer Configuration Register (Index=72h,
Default=001s0000b)
Bit Description
WDT Time-out Value Select 1
7
6
5
4
3-0
1: Second
0: Minute
WDT Output through KRST (pulse) Enable
1: Enable
0: Disable
WDT Time-out Value Extra Select
1: 64ms x WDT Time-out value (default=4s)
0: Determined by WDT Time-out value select 1 (bit 7 of this
register)
WDT Output through PWRGD Enable
1: Enable
0: Disable
During LRESET# this bit is selected by JP2 power-on
strapping option.
Interrupt Level Select for WDT
Please refer to Table 8-9 Interrupt Level Mapping Table
Watch Dog Timer Time-out Value (LSB) Register (Index=73h,
Default=38h)
Bit Description
7-0 WDT Time-out Value 7-0
Watch Dog Timer Time-out Value (MSB) Register (Index=74h,
Default=00h)
Bit Description
7-0 WDT Time-out Value 15-8
Appendix A Programming the Watchdog Timer A-5
Mini-ITX EMB-A50M
A.2 ITE8771E Watchdog Timer Initial Program
.MODEL SMALL
.CODE
Main:
CALL Enter_Configuration_mode
CALL Check_Chip
mov cl, 7
call Set_Logic_Device
;time setting
mov cl, 10 ; 10 Sec
dec al
Watch_Dog_Setting:
;Timer setting
mov al, cl
mov cl, 73h
call Superio_Set_Reg
;Clear by keyboard or mouse interrupt
mov al, 0f0h
mov cl, 71h
call Superio_Set_Reg
;unit is second.
mov al, 0C0H
mov cl, 72h
Appendix A Programming the Watchdog Timer A-6
Mini-ITX EMB-A50M
call Superio_Set_Reg
; game port enable
mov cl, 9
call Set_Logic_Device
Initial_OK:
CALL Exit_Configuration_mode
MOV AH,4Ch
INT 21h
Enter_Configuration_Mode PROC NEAR
MOV SI,WORD PTR CS:[Offset Cfg_Port]
MOV DX,02Eh
MOV CX,04h
Init_1:
MOV AL,BYTE PTR CS:[SI]
OUT DX,AL
INC SI
LOOP Init_1
RET
Enter_Configuration_Mode ENDP
Exit_Configuration_Mode PROC NEAR
MOV AX,0202h
Appendix A Programming the Watchdog Timer A-7
Mini-ITX EMB-A50M
CALL Write_Configuratio n_Data
RET
Exit_Configuration_Mode ENDP
Check_Chip PROC NEAR
MOV AL,20h
CALL Read_Configuration_Data
CMP AL,87h
JNE Not_Initial
MOV AL,21h
CALL Read_Configuration_Data
CMP AL,81h
JNE Not_Initial
Need_Initial:
STC
RET
Not_Initial:
CLC
RET
Check_Chip ENDP
Read_Configuration_Data PROC NEAR
MOV DX,WORD PTR CS:[Cfg_Port+04h]
Appendix A Programming the Watchdog Timer A-8
Mini-ITX EMB-A50M
OUT DX,AL
MOV DX,WORD PTR CS:[Cfg_Port+06h]
IN AL,DX
RET
Read_Configuration_Data ENDP
Write_Configuration_Data PROC NEAR
MOV DX,WORD PTR CS:[Cfg_Port+04h]
OUT DX,AL
XCHG AL,AH
MOV DX,WORD PTR CS:[Cfg_Port+06h]
OUT DX,AL
RET
Write_Configuration_Data ENDP
Superio_Set_Reg proc near
push ax
MOV DX,WORD PTR CS:[Cfg_Port+04h]
mov al,cl
out dx,al
pop ax
inc dx
out dx,al
ret
Superio_Set_Reg endp.Set_Logic_Device proc near
Appendix A Programming the Watchdog Timer A-9
Mini-ITX EMB-A50M
Set_Logic_Device proc near
push ax
push cx
xchg al,cl
mov cl,07h
call Superio_Set_Reg
pop cx
pop ax
ret
Set_Logic_Device endp
;Select 02Eh->Index Port, 02Fh->Data Port
Cfg_Port DB 087h,001h,055h,055h
DW 02Eh,02Fh
END Main
Note: Interrupt level mapping
0Fh-Dh: not valid
0Ch: IRQ12
.
.
03h: IRQ3
02h: not valid
01h: IRQ1
00h: no interrupt selected
Appendix A Programming the Watchdog Timer A-10
Mini-ITX EMB-A50M
Appendix
B
I/O Information
Appendix B I/O Information B-1
Mini-ITX EMB-A50M
B.1 I/O Address Map
Appendix B I/O Information B-2
Mini-ITX EMB-A50M
Appendix B I/O Information B-3
Mini-ITX EMB-A50M
B.2 Memory Address Map
Appendix B I/O Information B-4
Mini-ITX EMB-A50M
B.3 IRQ Mapping Chart
Appendix B I/O Information B-5
Mini-ITX EMB-A50M
Appendix B I/O Information B-6
Mini-ITX EMB-A50M
Appendix B I/O Information B-7
Mini-ITX EMB-A50M
B.4 DMA Channel Assignments
Appendix B I/O Information B-8
Mini-ITX EMB-A50M
x Appendi
C
Mating Connecotor
Appendix C Mating Connector C - 1
Mini-ITX EMB-A50M
C.1 List of Mating Connectors and Cables
The table notes mating connectors and available cables.
Function
Label
USB3_34
CN2 Digital IO
USB56
USB78
COM1
COM2
Appendix C Mating Connector C - 2
USB3.0
Connector
USB56
Connector
USB78
Connector
RS-232
Serial Port
Connector
RS-232
Serial Port
Connector
Mating Connector Connector
Vendor Model no
BOX
HEADER.10*
2P.180D(M).
PINREX
CATCH
CATCH
CATCH
CATCH
DIP.2.0mm.L
-BLUE.K20.P
INREX.52X-4
0-20GV52
(TF)PIN
HEADER.5*2
P.180D.(M).2
.0mm.DIP
(TF)USB
Cable.10pin.(
5Px2, 2.0mm
Housing).20c
m.W/O
Bracket.
(TF)USB
Cable.10pin.(
5Px2, 2.0mm
Housing).20c
m.W/O
Bracket.
(TF)Flat
Cable.9P DB
9P
MALE.10P
2.00mm
Pitch
Housing.20c
m
(TF)Flat
Cable.9P DB
9P
MALE.10P
2.00mm
Available Cable AAEON Cable
USB3.0 Cable 1700200301
N/A N/A
USB Cable 1709100208
USB Cable 1709100208
Serial Port
Cable
Serial Port
Cable
P/N
1701100206
1701100206
Mini-ITX EMB-A50M
Pitch
Housing.20c
m
(TF)Flat
Cable.9P DB
RS-232
COM3
Serial Port
CATCH
Connector
RS-232
COM4
Serial Port
CATCH
Connector
Note: The AAEON Cable P/N with “ * ” sign is for WiTAS series products.
9P
MALE.10P
2.00mm
Pitch
Housing.20c
m
(TF)Flat
Cable.9P DB
9P
MALE.10P
2.00mm
Pitch
Housing.20c
m
Serial Port
Cable
Serial Port
Cable
1701100206
1701100206
Appendix C Mating Connector C - 3
Mini-ITX EMB-A50M
A ppendix
D
AHCI Setting
Appendix D AHCI Setting D-1
Mini-ITX EMB-A50M
D.1 Setting AHCI
OS installation to setup AHCI Mode
Step 1: Copy the files below from “Driver CD ->Step 6 - AHCI -> Floppy
->x86” to Disk
Step 2: Connect the USB Floppy (disk with RAID files) to the board
Appendix D AHCI Setting D-2
Mini-ITX EMB-A50M
Step 3: The setting procedures “ In BIOS Setup Menu”
A: Advanced -> SATA Configuration -> SATA Configuration -> SATA
Mode -> AHCI Mode
Step 4: The setting procedures “In BIOS Setup Menu”
B: Boot -> Boot Option #1 -> DVD-ROM Type
Appendix D AHCI Setting D-3
Mini-ITX EMB-A50M
Step 5: The setting procedures “In BIOS Setup Menu”
C: Save & Exit -> Save Changes and Exit
Step 6: Setup OS
Appendix D AHCI Setting D-4
Mini-ITX EMB-A50M
Step 7: Press “F6”
Step 8: Choose “S”
Appendix D AHCI Setting D-5
Mini-ITX EMB-A50M
Step 9: Choose “Intel(R) 5 Series 6 Port SATA AHCI Controller”
tep 10: It will show the model number you select and then press “ENTER” S
Appendix D AHCI Setting D-6
Mini-ITX EMB-A50M
Step 11: Setup is loading files
Appendix D AHCI Setting D-7
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