Page 1
EP100
AMD Embedded G-Series Processor
EPIC Board
User’s Manual
Page 2
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 2012 Axiomtek Co., Ltd.
All Rights Reserved
March 2012, Version A1
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 trademark of American Megatrend Inc.
IBM, PC/AT, PS/2, VGA are trademarks of International Business Machines Corporation.
Intel® and Pentium® are trademarks of Intel Corporation.
AMD is trademark of AMD Corporation, Inc.
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 ............................................................................................... 1
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 ....................................................................................... 8
2.3 Jumper Settings ................................................................................ 10
2.3.1 Audio Output Selection (JP1) ..................................................................... 11
2.3.2 COM3 Data/Power Selection (JP2) ............................................................ 11
2.3.3 COM4 Data/Power Selection (JP3) ............................................................ 11
2.3.4 COM2 Data/Power Selection (JP4) ............................................................ 11
2.3.5 COM1 Data/Power Selection (JP6) ........................................................... 12
2.3.6 COM1 RS-232/422/485 Mode Setting (JP7, JP8, JP9) ............................ 12
2.3.7 LVDS Voltage Selection (JP10 and JP12) ................................................ 12
2.3.8 Auto Power On (JP11)............................................................................... 13
2.3.9 LVDS Brightness Control Mode Setting (JP14) ........................................ 13
2.3.10 Restore BIOS Optimal Defaults (JP16) ..................................................... 13
2.4 Connectors ........................................................................................ 14
2.4.1 Power Connector (ATX1) .......................................................................... 15
2.4.2 Power Output Connector (CN1 and CN5) ................................................. 15
2.4.3 Audio Connector (CN2) ............................................................................. 15
2.4.4 COM3 and COM4 Connector (CN3) ......................................................... 16
2.4.5 COM1 and COM2 Connector (COM1 and CN6) ....................................... 16
2.4.6 PCI-Express Mini Card Socket (CN7 and SCN1) ..................................... 17
2.4.7 Digital I/O Port Connector (CN8) ............................................................... 18
2.4.8 Inverter Connector (CN9) .......................................................................... 19
2.4.9 USB Port 4 and 5 (CN10) .......................................................................... 19
2.4.10 LVDS Connector (CN13) ........................................................................... 20
2.4.11 SMBus Connector (CN14) ........................................................................ 22
2.4.12 CPU Fan Connector (CN15) ..................................................................... 22
2.4.13 Front Panel Connector (CN16) ................................................................. 22
2.4.14 COM1 Connector (CN17A) ....................................................................... 23
2.4.15 VGA Connector (CN17B) .......................................................................... 23
2.4.16 DisplayPort Connector (CN18 and CN19) ................................................ 24
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2.4.17 VGA Connector (CN20) ............................................................................. 24
2.4.18 SIM Card Slot (SCN2) ............................................................................... 25
2.4.19 Serial ATA Connectors (SATA1 and SATA2) ............................................. 25
2.4.20 USB Stacks (USB1 and USB2) ................................................................. 26
2.4.21 CFast™ Socket (SCF1) ............................................................................ 26
2.4.22 Ethernet Ports (LAN1) ............................................................................... 27
Chapter 3 Hardware Description ........................... 29
3.1 APU (Accelerated Processing Unit) ................................................. 29
3.2 BIOS ................................................................................................... 29
3.3 System Memory ................................................................................. 29
3.4 I/O Port Address Map ........................................................................ 30
3.5 Interrupt Controller (IRQ) Map ......................................................... 32
3.6 Memory Map ...................................................................................... 33
Chapter 4 AMI BIOS Setup Utility .......................... 35
4.1 Starting ............................................................................................... 35
4.2 Navigation Keys ................................................................................ 35
4.3 Main Menu .......................................................................................... 36
4.4 Advanced Menu ................................................................................. 37
4.5 Chipset Menu ..................................................................................... 44
4.6 Boot Menu .......................................................................................... 51
4.7 Security Menu .................................................................................... 52
4.8 Save & Exit Menu .............................................................................. 53
Appendix A Watchdog Timer ................................... 55
About Watchdog Timer ................................................................................ 55
How to Use Watchdog Timer ....................................................................... 55
Sample Program .......................................................................................... 56
Appendix B Digital I/O ............................................. 59
About Digital I/O ........................................................................................... 59
Digital I/O Programming .............................................................................. 59
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
Chapter 1
Introduction
The EP100, an EPIC board, supports AMD G-Series APU T56N/T40R. The board integrates
the FCH A50M and delivers outstanding system performance through high-bandwidth
interfaces, multiple I/O functions for interactive applications and various embedded computing
solutions.
There is one 204-pin unbuffered SO-DIMM socket for single channel DDR3-1066/1333MHz
memory (only T56N can be up to DDR3-1333MHz), maximum memory capacity up to 4GB. It
also features two Gigabit/Fast Ethernet ports, two serial ATA channels for total two Serial ATA
hard drives at maximum transfer rate up to 600MB/sec, six 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 4 serial
ports and EPIC form factor that applies an extensive array of PC peripherals.
1.1 Features
AMD G-Series APU dual core T56N (1.65GHz) and single core T40R (1.0GHz)
AMD FCH A50M chipset
1 DDR3 SO-DIMM supports up to 4GB memory capacity
6 USB 2.0 ports
4 COM ports
+12V only DC-in supported
DirectX
®
11 support
Introduction 1
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
1.2 Specifications
CPU
AMD G-Series APU dual core T56N 1.65GHz.
AMD G-Series APU single core T40R 1.0GHz.
Thermal Solution
With AMD G-Series APU dual core T56N 1.65GHz is fan solution
With AMD G-Series APU single core T40R 1.0GHz is fanless solution
System Chipset
AMD FCH A50M.
BIOS
American Megatrends Inc. UEFI (Unified Extensible Firmware Interface) BIOS.
16Mbit SPI Flash, DMI, Plug and Play.
RPL/PXE Ethernet Boot ROM.
System Memory
One 204-pin unbuffered DDR3 SO-DIMM socket.
Maximum to 4GB DDR3 1066MHz memory for T40R.
Maximum to 4GB DDR3 1333MHz memory for T56N.
Onboard Multi I/O
Controller: Nuvoton W83627UHG.
Serial Ports: One port for RS-232/422/485 and three ports for RS-232.
Serial ATA
Two SATA-600 connectors.
CFast™ Socket
One CFast™ Socket.
USB Interface
Six USB ports with fuse protection and complies with USB Spec. Rev. 2.0.
Display
A standard type 15-pin D-Sub connector as VGA connector.
Dual DisplayPorts.
One 40-pin connector for 18/24-bit single/dual channel LVDS and one 8-pin inverter
connector. LVDS resolution is up to 1920x1080 in 24-bit dual channel.
Watchdog Timer
1~255 seconds or minutes; up to 255 levels.
Ethernet
Two ports with Realtek RTL8111E for Gigabit/Fast Ethernet.
Audio
HD audio compliant (with speaker/line-out and line-in/MIC-in) with Realtek ALC662.
Speaker/line-out and line-in/MIC-in via box header connector.
Expansion Interface
Two PCI-Express Mini Card sockets, complying with PCI-Express Mini Card Spec.
V1.2, one of which is with a SIM Card socket.
Power Management
ACPI (Advanced Configuration and Power Interface).
2 Introduction
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
Form Factor
EPIC form factor.
Note: All specifications and images are subject to change without notice.
1.3 Utilities Supported
Chipset and graphic driver
Ethernet driver (RTL8111E)
Audio driver
AHCI driver
Introduction 3
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4 Introduction
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
Board and Pin Assignments
2.1 Board Dimensions and Fixing Holes
Chapter 2
Top Side
Board and Pin Assignments 5
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
Bottom Side
Side View
6 Board and Pin Assignments
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
Slim Type
Board and Pin Assignments 7
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
2.2 Board Layout
Top Side
8 Board and Pin Assignments
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
Bottom Side
Board and Pin Assignments 9
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
Jumper
Description
Jumper Setting
JP1
Audio Output Selection
Default: Line-out
1-3, 2-4 close
JP2
COM3 Data/Power Selection
Default: RS-232 Data
CN3 Pin 1: DCD
3-5 close
CN3 Pin 8: RI
4-6 close
JP3
COM4 Data/Power Selection
Default: RS-232 Data
CN3 Pin 11: DCD
3-5 close
CN3 Pin 18: RI
4-6 close
JP4
COM2 Data/Power Selection
Default: RS-232 Data
CN6 Pin 1: DCD
3-5 close
CN6 Pin 8: RI
4-6 close
JP6
COM1 Data/Power Selection
Default: RS-232 Data
CN17A Pin 1: DCD
COM1 Pin 1: DCD
3-5 close
CN17A Pin 9: RI
COM1 Pin 8: RI
4-6 close
JP7
COM1 RS-232/422/485 Mode Setting
Default: RS-232
3-5, 4-6 close
JP8
3-5, 4-6 close
JP9
1-2 close
JP10
LVDS Voltage Selection for +3.3V or +5V
Default: +3.3V
1-2 close
JP11
Auto Power On
Default: Disable
1-2 close
JP12
LVDS Voltage Selection for +12V
Default: Disable
1-2 open
JP14
LVDS Brightness Control Mode Setting
Default: Voltage Mode
3-4 close
JP16
Restore BIOS Optimal Defaults
Default: Normal Operation
1-2 close
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 EP100 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, it is suggested to be
set under power-off.
10 Board and Pin Assignments
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
Function
Setting
Line out (Default)
1-3, 2-4 close
Speaker out
3-5, 4-6 close
Function
Setting
Power: Set CN3 pin 1 to +5V level
1-3 close
Data: Set CN3 pin 1 to DCD (Default)
3-5 close
Power: Set CN3 pin 8 to +12V level
2-4 close
Data: Set CN3 pin 8 to RI (Default)
4-6 close
Function
Setting
Power: Set CN3 pin 11 to +5V level
1-3 close
Data: Set CN3 pin 11 to DCD (Default)
3-5 close
Power: Set CN3 pin 18 to +12V level
2-4 close
Data: Set CN3 pin 18 to RI (Default)
4-6 close
Function
Setting
Power: Set CN6 pin 1 to +5V level
1-3 close
Data: Set CN6 pin 1 to DCD (Default)
3-5 close
Power: Set CN6 pin 8 to +12V level
2-4 close
Data: Set CN6 pin 8 to RI (Default)
4-6 close
2.3.1 Audio Output Selection (JP1)
JP1 is to select line out or speaker out as source of audio output on audio connector
CN2. When speaker out is used, it delivers 1W/channel continuous at 8 Ohm loads.
2.3.2 COM3 Data/Power Selection (JP2)
The COM3 port has +5V level power capability on DCD and +12V level on RI by setting
this jumper.
2.3.3 COM4 Data/Power Selection (JP3)
The COM4 port has +5V level power capability on DCD and +12V level on RI by setting
this jumper.
2.3.4 COM2 Data/Power Selection (JP4)
The COM2 port has +5V level power capability on DCD and +12V level on RI by setting
this jumper.
Board and Pin Assignments 11
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
Function
Setting
Power: Set CN17A/COM 1 pin 1 to +5V
level
1-3 close
Data: Set CN17A/COM1 pin 1 to DCD
(Default)
3-5 close
Power: Set CN17A/COM1 pin 9 to +12V
level
2-4 close
Data: Set CN17A /COM 1 pin 9 to RI
(Default)
4-6 close
Function
Setting
RS-232 mode
(Default)
JP7 3-5, 4-6 close
JP8 3-5, 4-6 close
JP9 1-2 close
RS-422 mode
JP7 1-3, 2-4 close
JP8 1-3, 2-4 close
JP9 3-4 close
RS-485 mode
JP7 1-3, 2-4 close
JP8 1-3, 2-4 close
JP9 5-6 close
Function
Setting
+3.3V level (Default)
JP10 1-2 close
+5V level
JP10 2-3 close
+12V level
JP12 1-2 close
2.3.5 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 COM1 is set to +5V or +12V level, please make sure the
communication mode is RS-232 (see section 2.3.6).
2.3.6 COM1 RS-232/422/485 Mode Setting (JP7, JP8, JP9)
Use these jumpers to set COM1 port to operate as RS-232, RS-422 or RS-485
communication mode. When these jumpers are set to operate as RS-422 or RS485,
please make sure COM1 is on data mode (see section 2.3.5)
2.3.7 LVDS Voltage Selection (JP10 and JP12)
The board supports voltage selection for flat panel displays. JP10 is used to set LVDS
connector (CN13) pin 1~6 VCCM to +3.3V or +5V voltage level. JP12 is used to set
LVDS connector (CN13) pin 1~6 VCCM to +12V voltage level.
12 Board and Pin Assignments
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
Function
Setting
Disable auto power on (Default)
1-2 close
Enable auto power on
1-2 open
Function
Setting
PWM mode
1-2 close
Voltage mode (Default)
3-4 close
Function
Setting
Normal (Default)
1-2 close
Restore BIOS optimal defaults
2-3 close
2.3.8 Auto Power On (JP11)
If JP11 is enabled for power input, the system will be automatically power on without
pressing soft power button. If JP11 is disabled for power input, it is necessary to
manually press soft power button to power on the system.
Note: This function is similar to the feature of power on after power failure, which is
controlled by hardware circuitry instead of BIOS.
2.3.9 LVDS Brightness Control Mode Setting (JP14)
The JP14 enables you to select PWM or voltage control mode for inverter connector
(CN9) pin 8. These two control modes are for adjusting LVDS brightness.
2.3.10 Restore BIOS Optimal Defaults (JP16)
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.
Board and Pin Assignments 13
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
Connector
Description
ATX1
Power Connector
CN1
Power Output Connector
CN2
Audio Connector
CN3
COM3 and COM4 Connector
CN5
Power Output Connector
CN6
COM2 Connector
CN7
PCI-Express Mini Card Connector
CN8
Digital I/O Port Connector
CN9
Inverter Connector
CN10
USB Port 4 and 5
CN13
LVDS Connector
CN14
SMBus Connector
CN15
CPU Fan Connector
CN16
Front Panel Connector
CN17
COM1 Connector and VGA Connector
CN18
DisplayPort 0
CN19
DisplayPort 1
CN20
VGA Connector (Slim type only)
COM1
COM1 Connector (Slim type only)
SCN1
PCI-Express Mini Card Connector
SCN2
SIM Card Slot
SATA1
Serial ATA1 Connector
SATA2
Serial ATA2 Connector
USB1
USB Port 0 and 1
USB2
USB Port 2 and 3
SCF1
CFastTM Socket
SDIMM1
DDRIII SO-DIMM Connector
LAN1
Ethernet Port 1 and Port 2
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 which shows all connectors on the hardware.
14 Board and Pin Assignments
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
Pin
Signal
1
GND
2
GND
3
+12V
4
+12V
Pin
Signal
1
+12V level
2
GND
3
GND
4
+5V level
Pin
Signal
Pin
Signal
1
MIC_IN
2
GND
3
LINE_IN_L
4
GND
5
LINE_IN_R
6
GND
7
AUDIO_OUT_L
8
GND
9
AUDIO_OUT_R
10
N.C.
2.4.1 Power Connector (ATX1)
The ATX1 is a 4-pin power supply interface. External power supply plug fits into ATX1 in
only one orientation. Properly press down power supply plug until it completely and
firmly fits into this connector. Loose connection may cause system instability.
2.4.2 Power Output Connector (CN1 and CN5)
Use CN1 and CN5 for interfacing to SATA 2.5" HDD power supply.
2.4.3 Audio Connector (CN2)
Pin 7 and pin 9 of connector CN2 can be set to different audio source by setting JP1
(see section 2.3.1).
Board and Pin Assignments 15
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
Pin
Signal
Pin
Signal
1
DCD3
2
DSR3
3
RXD3
4
RTS3
5
TXD3
6
CTS3
7
DTR3
8
RI3 9 GND
10
N.C.
11
DCD4
12
DSR4
13
RXD4
14
RTS4
15
TXD4
16
CTS4
17
DTR4
18
RI4
19
GND
20
N.C.
Pin
Signal
Pin
Signal
1
DCD1
2
DSR1
3
RXD1
4
RTS1
5
TXD1
6
CTS1
7
DTR1
8
RI1 9 GND
10
N.C.
Pin
Signal
Pin
Signal
1
DCD2
2
DSR2
3
RXD2
4
RTS2
5
TXD2
6
CTS2
7
DTR2
8
RI2
9
GND
10
N.C.
2.4.4 COM3 and COM4 Connector (CN3)
Both COM 3 and COM 4 ports have +5V level power capability on DCD and 12V level on
RI by setting JP2 and JP3, respectively (see section 2.3.2 and 2.3.3). The pin
assignments are listed on the following table.
2.4.5 COM1 and COM2 Connector (COM1 and CN6)
Both COM 1 and CN6 have +5V level power capability on DCD and 12V level on RI by
setting JP6 and JP4, respectively (see section 2.3.5 and 2.3.4). The pin assignments are
listed on the following table.
Note: COM1 connector is only in slim type I/O.
COM1
CN6
16 Board and Pin Assignments
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
51
52 18
1721
Pin
Signal
Pin
Signal
1
WAKE#
2
+3.3VSB
3
No use
4
GND
5
No use
6
+1.5V
7
CLKREQ#
8
No use
9
GND
10
No use
11
REFCLK-
12
No use
13
REFCLK+
14
No use
15
GND
16
No use
17
No use
18
GND
19
No use
20
W_DISABLE#
21
GND
22
PERST#
23
PE_RXN3
24
+3.3VSB
25
PE_RXP3
26
GND
27
GND
28
+1.5V
29
GND
30
SMB_CLK
31
PE_TXN3
32
SMB_DATA
33
PE_TXP3
34
GND
35
GND
36
USB_D8-
37
GND
38
USB_D8+
39
+3.3VSB
40
GND
41
+3.3VSB
42
LED_WWAN#
43
GND
44
LED_WLAN#
45
No use
46
LED_WPAN#
47
No use
48
+1.5V
49
No use
50
GND
51
No use
52
+3.3VSB
2.4.6 PCI-Express Mini Card Socket (CN7 and SCN1)
Both CN7 and SCN1 are PCI-Express Mini Card sockets which support PCI-Express x1
link and USB 2.0 link. A PCI-Express Mini Card can be applied to either PCI-Express or
USB 2.0. It complies with PCI-Express Mini Card Spec. V1.2.
CN7
Board and Pin Assignments 17
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
Pin
Signal
Pin
Signal
1
WAKE#
2
+3.3VSB
3
No use
4
GND
5
No use
6
+1.5V
7
CLKREQ#
8
PWR
9
GND
10
I/O
11
REFCLK-
12
CLK
13
REFCLK+
14
RST
15
GND
16
VPP
17
No use
18
GND
19
No use
20
W_DISABLE#
21
GND
22
PERST#
23
PE_RXN3
24
+3.3VSB
25
PE_RXP3
26
GND
27
GND
28
+1.5V
29
GND
30
SMB_CLK
31
PE_TXN3
32
SMB_DATA
33
PE_TXP3
34
GND
35
GND
36
USB_D8-
37
GND
38
USB_D8+
39
+3.3VSB
40
GND
41
+3.3VSB
42
LED_WWAN#
43
GND
44
LED_WLAN#
45
No use
46
LED_WPAN#
47
No use
48
+1.5V
49
No use
50
GND
51
No use
52
+3.3VSB
Pin
Signal
Pin
Signal
1
Digital Input 0
2
Digital Output 0
3
Digital Input 1
4
Digital Output 1
5
Digital Input 2
6
Digital Output 2
7
GND
8
Digital Output 3
9
GND
10
Digital Output 4
SCN1
2.4.7 Digital I/O Port Connector (CN8)
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. The software application method is
provided in Appendix B.
18 Board and Pin Assignments
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
Pin
Signal
1
VBL1 (+12V level)
2
VBL1 (+12V level)
3
VBL2 (+5V level)
4
VBL_ENABLE
5
GND
6
GND
7
GND
8
VBL Brightness Control
Pin
USB Port 4
Pin
USB Port 5
1
USB VCC (+5V level
standby power)
2
USB VCC (+5V level
standby power)
3
USB #4_D-
4
USB #5_D-
5
USB #4_D+
6
USB #5_D+
7
GND
8
GND
9
GND
10
GND
2.4.8 Inverter Connector (CN9)
The CN9 is a 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.
2.4.9 USB Port 4 and 5 (CN10)
The 2x5 pin wafer (CN10) is Universal Serial Bus (USB) connector which carries USB
port 4 and USB port 5. It is for installing versatile USB interface peripherals. The CN10 is
designed with +5V level standby power which can provide power when system is in
suspend mode.
Board and Pin Assignments 19
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
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
N.C.
12
N.C.
13
N.C.
14
N.C.
15
GND
16
GND
17
N.C.
18
N.C.
19
N.C.
20
N.C.
21
GND
22
GND
23
Channel A D0-
24
N.C.
25
Channel A D0+
26
N.C.
27
GND
28
GND
29
Channel A D1-
30
N.C.
31
Channel A D1+
32
N.C.
33
GND
34
GND
35
Channel A D2-
36
Channel A CLK-
37
Channel A D2+
38
Channel A CLK+
39
GND
40
GND
2.4.10 LVDS Connector (CN13)
This board has a 40-pin connector CN13 for LVDS LCD interface. It is strongly
recommended to use the matching JST SHDR-40VS-B 40-pin connector for LVDS
interface. Pin 1~6 VCCM can be set to +3.3V level or +5V level or +12V level by setting
JP10 or JP12 (see section 2.3.7).
18-bit single channel
20 Board and Pin Assignments
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
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
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
N.C.
12
Channel B D0-
13
N.C.
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
N.C.
31
Channel A D1+
32
N.C.
33
GND
34
GND
35
Channel A D2-
36
Channel A CLK-
37
Channel A D2+
38
Channel A CLK+
39
GND
40
GND
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
N.C.
12
N.C.
13
N.C.
14
N.C.
15
GND
16
GND
17
N.C.
18
N.C.
19
N.C.
20
N.C.
21
GND
22
GND
23
Channel A D0-
24
N.C.
25
Channel A D0+
26
N.C.
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-bit dual channel 24-bit single channel
24-bit dual channel
Board and Pin Assignments 21
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
Pin
Signal
1
CLK
2
DATA
3
GND
Pin
Signal
1
GND
2
+12V level
3
Fan speed feedback
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+
2.4.11 SMBus Connector (CN14)
This connector is for SMBus interface support. The SMBus (System Management Bus)
is a simple 2-wire bus for the purpose of lightweight communication. Most commonly it is
used for communication with the power source related applications such as on/off
instructions.
2.4.12 CPU Fan Connector (CN15)
The CN15 is a CPU fan interface. You can find fan speed on BIOS Setup Utility if CPU
fan is installed. For further information, see BIOS Setup Utility: Advanced\H/W
Monitor\PC Health Status.
2.4.13 Front Panel Connector (CN16)
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(-).
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
Pin
RS-232
RS-422
RS-485
1
DCD
TX-
Data-
2
RXD
TX+
Data+
3
TXD
RX+
N.C 4 DTR
RX-
N.C.
5
GND
No use
No use
6
DSR
No use
No use
7
RTS
No use
No use
8
CTS
No use
No use
9
RI
No use
No use
Pin
Signal
Pin
Signal
1
Red 2 Green
3
Blue
4
N.C.
5
GND
6
DETECT
7
GND
8
GND
9
VCC
10
GND
11
N.C.
12
DDC DATA
13
Horizontal
Sync
14
Vertical
Sync
15
DDC CLK
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(+).
2.4.14 COM1 Connector (CN17A)
The COM1 is a high rise 9-pin D-Sub connector. This connector is equipped with +5V
level power capability on DCD and +12V level on RI by setting JP6 (see section 2.3.5).
The pin assignment of RS-232/RS-422/RS-485 is listed on the following table. If you
need COM1 port to support RS-422 or RS-485 mode, please refer to section 2.3.6.
CN17A
CN17B (see section below)
2.4.15 VGA Connector (CN17B)
The CN17B is a standard type 15-pin D-Sub connector which is commonly used for VGA
monitor. This VGA interface configuration can be configured via software utility.
CN17A (see section above)
CN17B
Board and Pin Assignments 23
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
Pin
Signal
1
DPB_LANE0
2
GND
3
DPB_LANE0#
4
DPB_LANE1
5
GND
6
DPB_LANE1#
7
DPB_LANE2
8
GND
9
DPB_LANE2#
10
DPB_LANE3
11
GND
12
DPB_LANE3#
13
Detect Pin
14
GND
15
DPB_AUX
16
GND
17
DPB_AUX#
18
DPB_HPDE
19
GND
20
+3.3V
Pin
Signal
Pin
Signal
1
Red 2 Green
3
Blue
4
N.C.
5
GND
6
DETECT
7
GND
8
GND
9
VCC
10
GND
11
N.C.
12
DDC DATA
13
Horizontal Sync
14
Vertical Sync
15
DDC CLK
2.4.16 DisplayPort Connector (CN18 and CN19)
Two DisplayPort interfaces are available through connectors CN18 (DisplayPort 0) and
CN19 (DisplayPort 1).
1 20
2.4.17 VGA Connector (CN20)
The CN20 is a standard slim type 15-pin D-Sub connector which is commonly used for
CRT VGA monitor. This VGA interface configuration can be configured via software
utility.
Note: CN20 connector is only in slim type I/O.
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
Pin
Signal
1
PWR
2
RST
3
CLK
4
NC 5 GND
6
VPP
7
I/O 8 NC
Pin
Signal
1
GND
2
SATA_TX+
3
SATA_TX-
4
GND
5
SATA_RX-
6
SATA_RX+
7
GND
2.4.18 SIM Card Slot (SCN2)
SCN2 is on the bottom side of the EP100 for Inserting SIM Card. In order to work
properly, the SIM Card must be used together with Mini Card which is inserted to socket
SCN1. It is mainly used in 3G wireless network application.
2.4.19 Serial ATA Connectors (SATA1 and SATA2)
These Serial Advanced Technology Attachment (Serial ATA or SATA) connectors are for
high-speed SATA interface ports. They are computer bus interfaces for connecting to
devices such as hard disk drives. The EP100 has two Serial ATA connectors; SATA1 and
SATA2.
Board and Pin Assignments 25
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
1 2 3 4
5 6 7 8
1 2 3 4
5 6 7 8
Pin
USB Port 0
Pin
USB Port 1
1
USB VCC (+5V
level)
5
USB VCC (+5V
level)
2
USB #0_D-
6
USB #1_D-
3
USB #0_D+
7
USB #1_D+
4
GND
8
GND
Pin
USB Port 2
Pin
USB Port 3
1
USB VCC (+5V
level)
5
USB VCC (+5V
level)
2
USB #2_D-
6
USB #3_D-
3
USB #2_D+
7
USB #3_D+
4
GND
8
GND
Pin
Signal
Pin
Signal
1
GND
13
N.C 2 SATA_TX+
14
GND
3
SATA_TX-
15
N.C
4
GND
16
CFAST_LED#
5
SATA_RX-
17
N.C 6 SATA_RX+
18
N.C 7 GND
19
N.C 8 N.C
20
+3.3V Level
9
GND
21
+3.3V Level
10
N.C
22
GND
11
N.C
23
GND
12
N.C
24
N.C
2.4.20 USB Stacks (USB1 and USB2)
The board features Universal Serial Bus (USB) connectors, compliant with USB 2.0
(480Mbps) that can be adapted to any USB peripheral, such as monitor, keyboard and
mouse.
The stack labeled USB1 carries USB port 0 and USB port 1, while the stack labeled
USB2 carries USB port 2 and USB port 3.
USB1
USB2
2.4.21 CFast™ Socket (SCF1)
The board is equipped with a CFastTM socket on the bottom side to support a CFastTM
card which is based on the Serial ATA bus. The socket is specially designed to avoid
incorrect installation of the CFastTM card. When installing or removing the CFastTM card,
please make sure the system power is off. The CFastTM card by default identifies itself as
C: or D: drive in your PC system.
26 Board and Pin Assignments
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
Pin
Signal
Pin
Signal
L1
MDI0+
L5
MDI2+
L2
MDI0-
L6
MDI2-
L3
MDI1+
L7
MDI3+
L4
MDI1-
L8
MDI3-
A
Active LED (Yellow)
B
100 LAN LED (Green) / 1000 LAN LED
(Orange)
2.4.22 Ethernet Ports (LAN1)
The LAN1 has dual RJ-45 ethernet connectors. 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.
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
Chapter 3
Hardware Description
3.1 APU (Accelerated Processing Unit)
The EP100 supports AMD G-Series APU (Accelerated Processing Unit) T56N/T40R, which
enables your system to operate under Windows® XP, Windows® 7 and Linux environments.
The system performance depends on the APU.
3.2 BIOS
The EP100 uses AMI Plug and Play BIOS with a single 16Mbit SPI Flash.
3.3 System Memory
The EP100 supports one 204-pin DDR3 SO-DIMM sockets for a maximum memory of 4GB
DDR3 SDRAMs. The memory module comes in sizes of 1GB, 2GB and 4GB.
Hardware Description 29
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
3.4 I/O Port Address Map
The AMD G-Series APU communicates via I/O ports. Total 1KB port addresses are available
for assigning to other devices via I/O expansion cards.
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Hardware Description 31
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
3.5 Interrupt Controller (IRQ) Map
The EP100 is 100% PC compatible control board which consists of 20 interrupt request lines.
Four out of 20 can be programmable. The mapping list of the 20 interrupt request lines is
shown as the following table.
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
3.6 Memory Map
The memory mapping list is shown as follows:
Hardware Description 33
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
Chapter 4
AMI BIOS Setup Utility
The AMI UEFI BIOS provides users with a built-in setup program to modify basic system
configuration. All configured parameters are stored in a 16MB flash chip to save the setup
information whenever the power is turned off. This chapter provides users with detailed
description about how to set up basic system configuration through the AMI BIOS setup utility.
4.1 Starting
To enter the setup screens, follow the steps below:
1. Turn on the computer and press the <Del> key immediately.
2. 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.
Note: If your computer can not boot after making and saving system changes with Setup,
you can restore BIOS optimal defaults by setting JP16 (see section 2.3.10) .
It is strongly recommended that you should avoid changing the chipset’s defaults. Both AMI
and your system manufacturer have carefully set up these defaults that provide the best
performance and reliability.
4.2 Navigation Keys
The BIOS setup/utility uses a key-based navigation system called hot keys. Most of the BIOS
setup utility hot keys can be used at any time during the setup navigation process. These keys
include <F1>, <F2>, <Enter>, <ESC>, <Arrow> keys, and so on.
Note: Some of the navigation keys differ from one screen to another.
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
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.
4.3 Main Menu
When you first enter the setup utility, you will enter the Main setup screen. You can always
return to the Main setup screen by selecting the Main tab. System Time/Date can be set up as
described below. The Main BIOS setup screen is shown below.
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
System Language
Use this item to 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.
4.4 Advanced Menu
Launch PXE OpROM
Use this item to enable or disable the boot ROM function of the onboard LAN chip when
the system boots up.
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
► CPU Configuration
► IDE Configuration
► USB Configuration
► W83627UHG Super IO Configuration
► H/W Monitor
For items marked with “”, please press <Enter> for more options.
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
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.
Enable ACPI Auto Configuration
Use this item to enable or disable BIOS ACPI auto configuration.
ACPI Sleep State
Allow you to select the Advanced Configuration and Power Interface (ACPI) sleep state.
Here are the options for your selection; Suspend Disabled and S3 (Suspend to RAM). The
S3 (Suspend to RAM) option selects the highest ACPI sleep state the system will enter
when SUSPEND button is pressed.
S3 Video Repost
Enable or disable S3 video repost.
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
CPU Configuration
This screen shows the CPU Configuration.
Node 0 Information
View memory information related to Node 0.
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
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.
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
USB Configuration
You can use this screen to select options for the USB Configuration, and change the value
of the selected option. A description of the selected item appears on the right side of the
screen.
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.
USB transfer time-out
The time-out value for control, bulk and interrupt transfers.
Device reset time-out
USB mass storage device start unit command time-out.
Device power-up delay
Maximum time the device will take before it properly reports itself to the host controller.
Auto option uses default value: for a root port it is 100ms, for a hub port the delay is taken
from hub descriptor.
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
W83627UHG 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.
W83627UHG Serial Port 1~4 Configuration
The configuration of serial port 1~4 are set <Enable> as default.
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
H/W Monitor
This screen monitors hardware health status.
This screen displays the temperature of system and CPU, cooling fan speed in RPM and
system voltages (VCORE, +12V, +5V and +3.3V).
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
4.5 Chipset Menu
The Chipset menu allows users to change the advanced chipset settings. You can select any
of the items in the left frame of the screen to go to the sub menus:
► North Bridge
► North Bridge LVDS Config Select
► South Bridge
For items marked with “”, please press <Enter> for more options.
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
North Bridge Configuration
This screen allows users to configure parameters of North Bridge chipset.
Memory Configuration
All of options are set Auto as default.
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
Node 0 Information
This item is to provide user with the information of current using DDR3 SDRAMs.
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
North Bridge LVDS Config Select
DP0 Output Mode
Use this item to enable LVDS or Display Port0.
DP1 Output Mode
Use this item to choose Display Port1 output or disable mode.
LVDS Panel Config Select
Use this item to select configuration for LVDS panel if DP0 Output Mode is enabled, see
screen below.
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
South Bridge
This screen allows users to configure South Bridge chipset. For items marked with “”,
please press <Enter> for more options.
► SB SATA Configuration
► SB USB Configuration
► SB HD Azalia Configuration
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
SB SATA Configuration
Use this item to select options for SATA configuration.
OnChip SATA Channel
Use this item to enable or disable SATA channel.
OnChip SATA Type
Here are the options: Native IDE and AHCI.
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
SB USB Configuration
Use this item to enable or disable all of USB devices.
SB HD Azalia Configuration
This item allows you to enable or disable HD audio Azalia device.
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
4.6 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 NumLock.
Quiet Boot
Enable or disable quiet boot option.
Boot Option Priorities
Set the system boot priority order.
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
4.7 Security Menu
The Security menu allows users to change the security settings for the system.
Administrator Password
This item indicates whether an administrator password has been set (installed or
uninstalled).
User Password
This item indicates whether an user password has been set (installed or uninstalled).
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
4.8 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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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
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>.
54 AMI BIOS Setup Utility
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
Begin
Enable and Initialize
Watchdog Timer
Program “A”
Disable Watchdog
Timer
Next
Next
Next
Next
Begin
Enable and Initialize
Watchdog Timer
Program “A”
Reset Watchdog
Timer
Next
Next
Next
Next
Appendix A
Watchdog Timer
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.
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.
Watchdog Timer 55
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
Sample Program
Assembly sample code :
;Enable WDT:
mov dx,2Eh
mov al,87 ;Un-lock super I/O
out dx,al
out dx,al
;Select Logic device:
mov dx,2Eh
mov al,07h
out dx,al
mov dx,2Fh
mov al,08h
out dx,al
;Activate WDT:
mov dx,2Eh
mov al,30h
out dx,al
mov dx,2Fh
mov al,01h
out dx,al
;Set Second or Minute :
mov dx,2Eh
mov al,0F5h
out dx,al
mov dx,2Fh
mov al,Nh ;N=00h or 08h(see below
out dx,al
;Set base timer :
mov dx,2Eh
mov al,0F6h
out dx,al
mov dx,2Fh
mov al,Mh ;M=00h,01h,...FFh (hex),Value=0 to 255
out dx,al ;(see below
Note
)
;Disable WDT:
mov dx,2Eh
mov al,30h
out dx,al
mov dx,2Fh
mov al,00h ;Can be disabled at any time
out dx,al
Note:
If N=00h, 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
Note
)
56 Watchdog Timer
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
If N=08h, 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 57
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58 Watchdog Timer
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
Pin
Signal
Pin
Signal
1
DI0 (Bit0)
2
DO0 (Bit 3)
3
DI1 (Bit1)
4
DO1 (Bit 4)
5
DI2 (Bit2)
6
DO2 (Bit 5)
7
GND 8 DO3 (Bit 6)
9
GND
10
DO4 (Bit 7)
Appendix B
Digital I/O
About Digital I/O
The onboard digital I/O has 8 bits (DIO0~7). Each bit can be set to function as input or output
by software programming. In default, all pins are pulled high with +5V level (according to main
power). The BIOS default settings are 3 inputs and 5 outputs where all of these pins are set to
1.
CN8
Digital I/O Programming
Assembly sample code :
Set functionality:
;Start set DIO program:
mov dx,2Eh
mov al,87h ;Un-lock super I/O
out dx,al
out dx,al
mov dx,2Eh
mov al,07h
out dx,al
mov dx,2Fh
mov al,08h
out dx,al
mov dx,2Eh
mov al,30h
out dx,al
mov dx,2Fh
mov al,02h
out dx,al
Digital I/O 59
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
DIO7
DIO6
DIO5
DIO4
DIO3
DIO2
DIO1
DIO0
Output
Output
Output
Output
Output
Output
Output
Output
DIO7
DIO6
DIO5
DIO4
DIO3
DIO2
DIO1
DIO0
Output
Output
Output
Output
Output
Output
Input
Output
DIO7
DIO6
DIO5
DIO4
DIO3
DIO2
DIO1
DIO0
Output
Output
Output
Output
Output
Input
Input
Input
DIO7
DIO6
DIO5
DIO4
DIO3
DIO2
DIO1
DIO0
Input
Input
Input
Input
Output
Output
Input
Output
DIO7
DIO6
DIO5
DIO4
DIO3
DIO2
DIO1
DIO0
Output
Output
Output
Output
Output
Input
Input
Input
;Programming DIO as in/out.
mov dx,2Eh
mov al,0E0h
out dx,al
mov dx,2Fh
mov al,Nh ;If N=07h, DIO is programmed as 3 inputs
out dx,al ;and 5 outputs (see below
Note1
)
Digital Input:
;Read digital input data.
mov dx,2Eh
mov al,0E1h
out dx,al
mov dx,2Fh ;If N=07h, bit0~2 represent DIO0~2,
in dx, al ;bit0~2 are DIO pin 0~2 state (1 High, 0 Low)
;(see below
Note2
)
Digital Output:
; Set DIO digital output pins value.
mov dx,2Eh
mov al,0E1h
out dx,al
mov dx,2Fh
mov al,M ;If N=07h, bit3~7 represent DIO3~7,
out dx,al ;set output value M
;bit3~7 are DIO pin 3~7 state (1 High, 0 Low)
;if M=FFh, all DIO pins are high
;(see below
Note3
)
Note1:
The N has 8 bits. Every bit’s value is either 1 or 0.
" 1" means that the bit is programmed to input.
" 0" means that the bit is programmed to output.
Ex:
1. N=00h=00000000b
2. N=02h=00000010b
3. N=07h=00000111b
4. N=F2h=11110010b
Note2:
If N=07h
60 Digital I/O
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EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
DIO7
DIO6
DIO5
DIO4
DIO3
DIO2
DIO1
DIO0
Output
Output
Output
Output
Output 1 1
1
DIO7
DIO6
DIO5
DIO4
DIO3
DIO2
DIO1
DIO0
Output
Output
Output
Output
Output 1 1
0
DIO7
DIO6
DIO5
DIO4
DIO3
DIO2
DIO1
DIO0
Output
Output
Output
Output
Output
Input
Input
Input
DIO7
DIO6
DIO5
DIO4
DIO3
DIO2
DIO1
DIO0 1 1 1 1 1 1 1 1
DIO7
DIO6
DIO5
DIO4
DIO3
DIO2
DIO1
DIO0 1 1 0 1 0 1 1 1
1. When DIO0~2 are connected to external device, the device sets DIO0~2 to high
2. When DIO0~2 are connected to external device, the device sets DIO0 to low and DIO1~2 to high
Note3:
If N=07h
1. When M=FFh
2. When M=D7h
Digital I/O 61
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62 Digital I/O
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