1
AMB-D255T1 Board
User Manual
2
Copyright
All Rights Reserved.
For the purpose of improving reliability, design and function, the information in this document is
subject to change without prior notice and does not represent a commitment on the part of the
manufacturer.
In no event will the manufacturer be liable for direct, indirect, special, incidental, or
consequential damages arising out of the use or inability to use the product or documentation, even
if advised of the possibility of such damages.
This document contains proprietary information protected by copyright. All rights are reserved.
No part of this Manual may be reproduced by any mechanical, electronic, or other means in any
form without prior written permission of the manufacturer.
Trademarks
AMB-D255T1 is a registered trademarks of Acrosser; IBM PC is a registered trademark of the
International Business Machines Corporation; Pentium is a registered trademark of Intel
Technologies Inc; AMI is a registered trademark of AMI Software International Inc; other product
names mentioned herein are used for identification purposes only and may be trademarks and/or
registered trademarks of their respective companies.
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Table of Contents
Chapter 1 Introduction...........................................................................................................................4
1.1. Specifications.................................................................................................................... 4
1.2. Package Contents.............................................................................................................. 5
Chapter 2 H/W Information...................................................................................................................6
2.1 Mainboard illustration (Top Side)..................................................................................... 6
2.2 Location & Definition of Jumpers and Headers...............................................................7
Chapter 3 BIOS Settings......................................................................................................................15
3.1. Main Setup...................................................................................................................... 16
3.2. Advanced Setup.............................................................................................................. 18
3.3. Chipset Setup.................................................................................................................. 29
3.4. Boot Setup....................................................................................................................... 34
3.5. Security setup.................................................................................................................. 36
3.6. Save & Exit Setup........................................................................................................... 37
Chapter 4 Function Description...........................................................................................................38
4.1. DC Power input connection............................................................................................ 38
4.2. Digital Inputs .................................................................................................................. 38
4.3. Digital Outputs................................................................................................................ 38
4.4. RS-232 Ports................................................................................................................... 38
4.5. Serial ATA (SATA).......................................................................................................... 38
4.6. USB................................................................................................................................. 38
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Chapter 1 Introduction
AMB-D255T1 Series with Intel Atom D2550 processor is a multi-function Industrial Main-board,
which is suitable for using in all kind of applications. Besides basic I/O ports like VGA, HDMI, USB,
COM. LAN, and GPIO. It also compliant with most industry standards for computing usage
including CE and FCC.
1.1. Specifications
CPU
Intel Atom D2550
Dual-core, clock speed 1.86G，TDP 10W
Chipset Intel NM10，TDP 2.0 W
Display
1 * VGA and 1 * HDMI
1 * LVDS (24-bit single channel LVDS, up to 1440x900 resolution)
Memory
Support DDR3 1066/800 MHz
1 * 204-pin SO-DIMM slot，Up to 4 GB
Storage
Intel Serial ATA2 (3 Gbps) controller
1 * Serial ATA ports
Ethernet
1 * Realtek RTL8111E PCI-E 1000Mbps LAN
Audio
Realtek ALC662 5.1 Channel HD Audio Codec
1 *MIC In and 1* Line out
Serial 3* RS232+1 * RS232 or TTL
Other Ports
6 * USB2.0 (4 * Rear I/O + 2 * Pin Header)
8 * GPIO, 1 * LPT
1 * SIM Card Socket
1 * PS/2 Header
1 * Mini PCI-E （Wireless Devices are Supported）
1 * F- Audio
Temperature
Storage: -15~80℃
Operating: -10~55℃
BIOS
AMI BIOS
OS Support
Windows 7 32-bit, Fedora 14 32-bit
Form Factor
Mini ITX
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1.2. Package Contents
Check if the following items are included in the package.
Quick Manual
AMB-D255T1 board
1 x Driver CD
1 x SATA Cable
1 x SATA Power Cable
1 x DC Power Cable
4 x DB9 Cable for COM port
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Chapter 2 H/W Information
This chapter describes the installation of AMB-D255T1. At first, it shows the Function
diagram and the layout of AMB-D255T1. It then describes the unpacking information which you
should read carefully, as well as the jumper/switch settings for the AMB-D255T1 configuration.
2.1 Mainboard illustration (Top Side)
Intel D2550 CPU 1.86GHz
SATA 2
SATA Connector
Intel NM10 PCH Mini PCIe slot
DIMM 1
204-Pin DDR3 Socket
2
1
34
5
7
2.2 Location & Definition of Jumpers and Headers
ATX1
Power Output Header
LPT1
Pin Header for LPT
JC3_TTL1/2 & JC3_P
Serial Port 3 control Header
J_DC1
Headers for Power Input
LVDS1
Pin Header for LVDS
J_COM4
Serial Port 4 Header
JCMOS1
Headers for CMOS
JP2
Pin Header for LVDS backlight
JC4
Serial Port 4 control Header
F_PANEL1
Headers for front panel LED & SW
LVDS_P1
LVDS backlight Voltage selection
SYS_FAN1
CPU Fan Connector
F_AUDIO1
Headers for front SPK and MIC
JP3
Headers of PSON source
selection
SYS_FAN2
System Fan Connector
J_GPIO1
Pin Header for GPIO
J_COM1
Serial Port 1 Header
SATA_P1
Pin Header for SATA Power
F_USB2
Pin Header for front USB port
JC1
Serial Port 1 control Header
J1
SATA DOM Power Selection
J_KBMS1
Pin Header for PS/2 KB and MS
J_COM2
Serial Port 2 Header
J_VGA1 (Reserved)
Pin Header for VGA
J_LPC1
Pin Header for LPC
JC2
Serial Port 2 control Header
J13 & J14
Pin Header for Mini PCIe USB
signal
J_SPK (Reserved)
Pin Header for Amplifier output
J_COM3
Serial Port 3 Header
29
23
22
21
20
4
19
17
14
18
10
5
16
8
26
6
15 27
9
28
2
11
1
7
13
3
12
24
25
29
8
Definition of Jumpers and Headers
[01]ATX1 Power Output Header（4*1 Pin 2.54 mm）
Pin Definition Pin Definition
1
+12V
2
GND
ATX1
3
GND
4
+5V
[02] Power Input Header（4*1 Pin 2.54 mm）
Pin Definition Pin Definition
1
+12V IN
2
+12V IN
J_DC1
3
GND
4
GND
* Please use the DC Power Cable in accessory to avoid the System damage.
[03] CMOS Control Jumper (3*1Pin 2.54 mm)
Setting Instruction
1-2 Normal (Default)
JCMOS1
2-3 Clear CMOS
[04] Front Panel Header（5*2 Pin 2.54 mm）
Pin Definition Pin Definition
1 HD LED+ 2 Power LED+
3 HD LED- 4 Power LED-
5 GND 6 PW+
7 RESET 8 PW-
F_PANEL1
9 N/C
[05] F_AUDIO Header（5*2 Pin 2.54 mm）(Reserve for Test)
Pin Definition Pin Definition
1 FP_MIC_L 2 GND
3 FP_MIC_R 4 +3.3V
5 FP_OUT_R 6 Jack Detect
7 GND 8 N/A
F_AUDIO1
9
FP_OUT_L
10 Jack Detect
9
[06] GPIO Header（5*2 Pin 2.00 mm）
Pin Definition Pin Definition
1
GPO37(0A02 Bit7)
2
GPI22(050E Bit6)
3
GPO51(0A04 Bit1)
4
GPO38(0538 Bit6)
5
GND
6
GPI7(050C Bit7)
7
GPI33(0x538 Bit1)
8
GPI36(0x538 Bit4)
J_GPIO1
9
GPO39(0x538 Bit7)
10
+5V
[07] Front USB Header（5*2 Pin 2.54 mm）
Pin Definition Pin Definition
1 + 5 V 2 + 5 V
3 USBP4- 4 USBP5-
5 USBP4+ 6 USBP5+
7 GND 8 GND
F_USB2
10 N/C
[08] KBMS Header (6*1 Pin 2.0mm)
Pin Definition Pin Definition
1
KB_CK1
2
KB_DT1
3
MS_CK1
4
GND
J_KBMS
1
5
5V
6
MS_DT1
[09] LPC Header (9*1 Pin 2.0mm)
Pin Definition Pin Definition
1
LFRAME-N
2
LAD3
3
LAD2
4
LAD1
5
LAD0
6
GND
7
PLTRST-N
8
CLK-LPC
LPC1
9
3.3V
[10] Amplifier Header（4*1 Pin 2.00mm）
Pin Definition Pin Definition
1
SPKR_R-
2
SPKR_R+
J_SPK
3
SPKR_L+
4
SPKR_L-
* Reserve Function
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[11] LPT Header (13*2 Pin 2.0mm)
Pin Definition Pin Definition
1
LPT1
2
LPT14
3
LPT2
4
-ERR
5
LPT3
6
LPT16
7
LPT4
8
LPT17
9
LPT5
10
GND
11
LPT6
12
GND
13
LPT7
14
GND
15
LPT8
16
GND
17
LPT9
18
GND
19
-ACK
20
GND
21
BUSY
22
GND
23
PE
24
GND
J_LPT1
25
SLCT
26 N/C
[12] LVDS Header（15*2 Pin 2.0mm）
Pin Definition Pin Definition
1
LVDS_P1*
2
LVDS_P1*
3
LVDS_P1*
4 NC
5 GND 6 GND
7 LVDS_A_DATA0_N 8
LVDS_A_DATA0_P
9 LVDS_A_DATA1_N 10
LVDS_A_DATA1_P
11 LVDS_A_DATA2_N 12
LVDS_A_DATA2_P
13 GND 14 GND
15 LVDS_A_CLK_N 16 LVDS_A_CLK_P
17 LVDS_A_DATA3_N 18 LVDS_A_DATA3_P
19 N/A 20
N/A
21 N/A 22
N/A
23 N/A 24
N/A
25 GND 26 GND
27 N/A 28 N/A
LVDS1
29 N/A 30 N/A
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[13] LVDS Back Light Power Header（5*1 Pin 2.00mm）
Pin Definition Pin Definition
1
+12V
2
GND
3
LVDS_ENABKL
4
NC
JP2
5
+5V
* It does not support brightness control.
[14] LVDS VDD_PANEL Voltage Selection Header（3*2 Pin 2.00mm）
Settings Function
1-2 Output:12V
3-4 Output:5V
LVDS_P1
5-6 Output :3.3V(Default)
*Attention: Only one jumper can be installed at once!
[15] PSON Signal Selection Header（3*1 Pin 2.00mm）
Settings Definition
1-2 PSON signal from SIO
JP3
2-3 PSON signal from ICH
[16] Serial Port 1 Header（5*2 Pin 2.0 mm）
Pin Definition Pin Definition
1 JC1* 2 RXD
3 TXD 4 DTR
5 GND 6 DSR
7 RTS 8 CTS
J_COM1
9 RI
[17] Serial Port 1 Control Header（3*1 Pin 2.00mm）
Settings Function
1-2 PIN1 Output :5V
JC1
2-3
PIN1 Output :DCD
(Default)
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[18] Serial Port 2 Header（5*2 Pin 2.0 mm）
Pin Definition Pin Definition
1 JC2* 2 RXD
3 TXD 4 DTR
5 GND 6 DSR
7 RTS 8 CTS
J_COM2
9 RI
[19] Serial Port 2 Control Header（3*1 Pin 2.0 mm）
Settings Function
1-2 PIN1 Output :5V
JC2
2-3 PIN1 Output :DCD (Default)
[20] Serial Port 3 Header（5*2 Pin 2.0 mm）
Pin Definition Pin Definition
1 JC3_P* 2 JC3_TTL1*(RXD)
3 JC3_TTL2*(TXD) 4 DTR
5 GND 6 DSR
7 RTS 8 CTS
J_COM3
9 N/C or JC3_P*
*Attention: The Pin9 output default value is ‘NC’
，
but it also can output 5V or 12V by
changing the hardware
（
please refer to JC_P
）。
[21] Serial Port 3 Control Header（4*1 Pin 2.54mm）
Header Settings Working Mode
JC3_TTL1
1-2、3-4
JC3_TTL2
1-2、3-4
RS-232（Default）
JC3_TTL1
2-3
JC3_TTL1
JC3_TTL2
JC3_TTL2
2-3
TTL
Settings Function
1-2
PIN1、9 Output :5V
2-3
PIN1、9 Output :12V
JC3_P
3-4
PIN1、9 NC（Default）
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[22] Serial Port 4 Header（5*2 Pin 2.0 mm）
Pin Definition Pin Definition
1 JC4* 2 RXD
3 TXD 4 DTR
5 GND 6 DSR
7 RTS 8 CTS
J_COM4
9 NC/JC4*
[23] Serial Port 4 Control Header（4*1 Pin 2.54mm）
Settings Function
1-2
PIN1、9 Output :5V
2-3
PIN1、9 Output :12V
JC4
3-4
PIN1、9 NC（Default）
[24] System Fan1 Header (3*1 Pin 2.54 mm)
Pin Definition Pin Definition
1 GND 2 + 12V
SYS_FAN1
3 N/C
* Used for CPU Fan
[25] System Fan2 Header (4*1 Pin 2.54 mm)
Pin Definition Pin Definition
1 GND 2 + 12V
SYS_FAN2
3 FAN Speed Detection 4 FAN Speed Control
[26]SATA Power Supply Header (4*1 Pin 2.00mm)
Pin Definition Pin Definition
1
+12V
2
GND
SATA-P1
3
GND
4
+5V
14
[27] SATA2 DOM Power Supply Selection Header (3*1 Pin 2.00mm)
Settings Function
1-2
Pin 7 Output：+5V
J1
2-3
Pin 7 Output：GND （Default）
[28] VGA Header（12*1 Pin 2.00 mm）(Reserve for Test)
Pin Definition Pin Definition
1 CRT_ON 2 VSYNC
3 HSYNC 4 GND
5 RED 6 GND
7 GREEN 8 GND
9 BLUE 10 GND
J_VGA1
11 DDCDAT 12 DDCCLK
Note. It can not use USB Hub with power adaptor that connects to USB port.
[29] Mini PCIe USB Signal Control Header（3*1 Pin 2.54 mm）
Heade
r
Settings Definition
J13 1-2
J14 1-2
USB signal supported (Default)
J13 2-3
J13、J14
J14 2-3
N/A
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Chapter 3 BIOS Settings
This chapter describes the BIOS menu displays and explains how to perform common tasks
needed to get the system up and running. It also gives detailed explanation of the elements found
in each of the BIOS menus. The following topics are covered:
Main Setup
Advanced Setup
Chipset Setup
Boot Setup
Security Setup
Save & Exit
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3.1. Main Setup
Once you enter the AMI BIOS™ CMOS Setup Utility, the Main Menu will appear on the screen.
Use the arrow keys to highlight the item and then use the <Pg Up> <Pg Dn> keys to select the
value you want in each item.
Note: Listed at the bottom of the menu are the control keys. If you need any help with the item fields,
you can press the <F1> key, and it will display the relevant information.
Option Choice Description
BIOS Information
N/A This item displays the BIOS Information
BIOS Vendor
N/A This item displays the BIOS vendor
Core Version
NA This item displays the Core Version
Compliancy
N/A This item displays the BIOS Compliancy
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Project Version
N/A This item displays the Project Information.
Motherboard Version
N/A This item displays the MotherBoard Model.
Built Data & Time
N/A This item displays the Built information
System Date
N/A Set the date. Use Tab to switch between Date elements
System Time
N/A Set the time. Use Tab to switch between Date elements
Access Level
N/A Set the system access level.
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3.2. Advanced Setup
Option Choice Description
ACPI Settings
N/A ACPI Options Settings
Power On
N/A Power Fail settings
CPU Configuration
NA This item displays the CPU and Parameters.
IDE Configuration
N/A SATA and IDE port configuration.
USB Configuration
NA Monitor hardware status
SMART Settings
NA Power Sub System
Super IO
NA System Super IO Chip Parameters.
HW Monitor
NA This item displays the HW Monitor Parameters
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3.2.1 ACPI Settings
Option Choice Description
Enable Hibernation
Enabled / Disabled Enable or disable Hibernation
ACPI Sleep State
Disable / S1 Only Define ACPI State while Suspend button pressed
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3.2.2 Power On Configuration
Option Choice Description
PowerOn After
Power Fail
Power On/ Power
Off / Last Status
Define the system Power status after Power Fail.
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