LE-374
3.5 inch Miniboard
User’s Manual
Edition 2.1
2010/06/14
LE-374 User’s Manual
Copyright
Copyright 2009. All rights reserved. This document is copyrighted and all rights are
reserved. The information in this document is subject to change without prior notice to
make improvements to the products.
This document contains proprietary information and protected by copyright. No part of
this document may be reproduced, copied, or translated in any form or any means
without prior written permission of the manufacturer.
All trademarks and/or registered trademarks contains in this document are property of
their respective owners.
Disclaimer
The company shall not be liable for any incidental or consequential damages resulting
from the performance or use of this product.
The company does not issue a warranty of any kind, express or implied, including
without limitation implied warranties of merchantability or fitness for a particular purpose.
The company has the right to revise the manual or include changes in the specifications
of the product described within it at any time without notice and without obligation to
notify any person of such revision or changes.
Trademark
All trademarks are the property of their respective holders.
Any questions please visit our website at http://www.commell.com.tw
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LE-374 User’s Manual
Packing List:
Please check the package content before you starting using the board.
Hardware:
LE-374 3.5“ Miniboard x 1
Cable Kit:
44-pin
44-pin
DC Power Cable x 1
(OALDC-2)
ATA33 IDE Cable x1
(OALUDMA33-8)
SATA Cable x 1
(OALSATA-L)
SATA Power Cable x 1
(OAL4P-S1)
PS/2 keyboard & mouse cable x 1
(OALPS2/MK)
1 to 3 power output cable
(OAL4P-2)
DVI module x 1 (LE-374 only)
(ADPDVI + OALDVI-P)
Audio Port Cable x 1
(OALPJ-SANB)
COM Port Cable x 1
(OALES-BKU1NB)
USB Cable x 1
(OALUSBA-3)
Printed Matters:
Driver CD x 1 (Including User’s Manual)
Optional:
YPbPr Cable x 1
(OALTV-OUT-H)
SDTV Cable x 1
(OALTV-OUT)
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LE-374 User’s Manual
Index
Chapter 1 <Introduction> ................................................................ 6
1.1 <Product Overview> .................................................................................. 6
1.2 <Product Specification>............................................................................. 7
1.3 <Mechanical Drawing> .............................................................................. 9
1.4 <Mechanical Drawing> ............................................................................ 10
Chapter 2 <Hardware Setup> ..................................................... 11
2.1 <Connector Location> ............................................................................. 11
2.2 <Jumper Reference>............................................................................... 13
2.3 <Connector Reference> .......................................................................... 14
2.3.1 <Internal Connector>.............................................................. 14
2.3.2 <External Connector> ............................................................ 14
2.4 <CPU and Memory Setup> ..................................................................... 15
2.5 <CMOS&ATX Setup>............................................................................. 16
2.6 <Enhanced IDE & CF Interface>............................................................. 17
2.7 <Serial ATA Interface> ............................................................................ 18
2.8 <LAN Interface> ...................................................................................... 18
2.9 <Onboard Display Interface> .................................................................. 19
2.9.1 <Analog VGA Interface> ........................................................ 19
2.9.2 <Digital Display>..................................................................... 20
2.9.3 <DVI Interface > ..................................................................... 24
2.9.4 <TV-out Interface> ................................................................. 25
2.10 <Onboard Audio Interface> ................................................................... 26
2.11 <USB2.0 Interface> ............................................................................... 27
2.12 <GPIO Interface> .................................................................................. 28
2.13 <Serial Port Jumper Setting > ............................................................... 29
2.14 <Power and Fan Connector > ............................................................... 31
2.14.1 <Power Input> ...................................................................... 31
2.14.2 <Power Output> ................................................................... 32
2.14.3 <Fan Connector> ................................................................. 32
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LE-374 User’s Manual
2.15 <Indicator and Switch> .......................................................................... 33
Chapter 3 <System Configuration> ....................................... 35
3.1 <Video Memory Setup> ........................................................................... 35
3.2 <Audio Configuration >............................................................................ 37
Chapter 4 <BIOS Setup>................................................................ 39
Appendix A <I/O Port Pin Assignment> ............................. 41
A.1 <IDE Port>............................................................................................... 41
A.2 <IrDA Port>.............................................................................................. 42
A.3 < CRT Port > ........................................................................................... 42
A.4 <Serial ATA Port> .................................................................................... 42
A.5 <Serial Port> ........................................................................................... 43
A.6 <LAN Port>.............................................................................................. 43
Appendix B <Flash BIOS>............................................................ 44
B.1 BIOS Auto Flash Tool .............................................................................. 44
B.2 Flash Method........................................................................................... 44
Appendix C <System Resources> ......................................... 45
C.1 <I/O Port Address Map> ......................................................................... 45
C.2 <Memory Address Map >........................................................................ 47
C.3 < System IRQ Resources > .................................................................... 48
Appendix D <Programming GPIO’s>.................................... 49
Appendix E <Watch Dog timer Setting > ........................... 50
Contact Information .......................................................................... 52
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LE-374 User’s Manual
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LE-374 User’s Manual
Chapter 1 <Introduction>
1.1 <Product Overview>
LE-374 is the 3.5 inch miniboard, with Intel® Atom N270 processor for 533 MHz front
side bus, Intel® 945GSE and ICH7M chipset, integrated GMA950 graphics, DDR2
SO-DIMM memory, Realtek AC97 Audio, Serial ATA and one Intel® 82574L Gigabit
LAN.
Intel Atom Processor
The Intel® Atom N270 single core processor is with 533 MHz front side bus, 512KB L2
cache. It's built on 45nm process technology support Hyper-Threading Technology,
Enhanced Intel SpeedStep® Technology reduces average system power consumption.
Mobile Intel® 945GSE chipset
The board integrates Intel® 945GSE and ICH7M chipset. The chipset features
power-efficient graphics with an integrated 32-bit 3D graphics engine based on Intel®
Graphics Media Accelerator 950 architecture with DVI, LVDS, CRT, and
TV-Out display ports. It provides I/O capabilities and flexibility via high-bandwidth
interfaces such as PCI, Serial ATA and Hi-Speed USB 2.0 connectivity. It also includes a
single channel for 400/533 MHz DDR2 system memory (SODIMM), AC97 Audio with 5.1
channels surrounding sound.
All in One multimedia solution
Based on Intel 945GSE and ICH7M chipset, the board provides high performance
onboard graphics, 18-bit Dual channel LVDS interface, DVI and HDTV and 5.1 channels
AC97 Audio, to meet the every requirement of the multimedia application.
Flexible Extension Interface
The board also provides Compact Flash Type II socket and one mini-PCI socket.
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LE-374 User’s Manual
1.2 <Product Specification>
General Specification
Form Factor
CPU
Memory
Chipset
BIOS
Green Function
Watchdog Timer
Real Time Clock
Enhanced IDE
Serial ATA
3.5 inch miniboard
Intel® Atom N270 processor
Package type: FCBGA8
Front side bus: 533MHz
1 x 200-pin DDR2 SO-DIMM SDRAM up to 2GB
Unbufferred, none-ECC memory supported only
Intel® 945GSE and ICH7M
Phoenix-Award v6.00PG 8Mb SPI flash BIOS
Power saving mode includes doze, standby and suspend modes.
ACPI version 1.0 and APM version 1.2 compliant
System reset programmable watchdog timer with 1 ~ 255
sec./min. of timeout value
Intel® ICH7M built-in RTC with lithium battery
UltraDMA33 IDE interface supports up to 2 ATAPI devices
One 44-pin IDE port onboard
One CompactFlash Type II socket on solder side
Intel® ICH7M integrates 2 Serial ATA interfaces
(No RAID Function)
Up to 150MB/s of transfer rate
Multi-I/O Port
Chipset
Serial Port
USB Port
IrDA Port
K/B & Mouse
GPIO
Smart Fan
Intel® ICH7M with Winbond® W83627THG controller
One RS-232/422/485 serial port and one RS-232
Two external & two internal Hi-Speed USB 2.0 ports with
480Mbps of transfer rate
One IrDA compliant Infrared interface supports SIR
PS/2 keyboard and mouse port
One 12-pin Digital I/O connector with 8-bit programmable I/O
interface
One CPU fan connectors for fan speed controllable
VGA Display Interface
Chipset
Frame Buffer
Display Type
Connector
Intel® 945GSE GMCH (Graphic Memory Controller Hub)
Up to 224MB shared with system memory
CRT, LCD monitor with analog display, HDTV, DVI (LE-374 only)
External DB15 female connector on rear I/O panel
Onboard 40-Pin LVDS connector
Onboard 26-Pin DVI connector (LE-374 only)
Onboard 10-Pin TV-out connector
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LE-374 User’s Manual
Ethernet Interface
Controller
Type
Connector
1 x Intel 82574L Gigabit Ethernet controller
Triple speed 10/100/1000Base-T
auto-switching Fast Ethernet
Full duplex, IEEE802.3U compliant
One External RJ45 connector with LED on rear I/O panel
Audio Interface
Chipset
Interface
REALTEK ALC655
5.1 channel surround audio with Line-in, Line-out and MIC-in
Connector
Onboard audio connector with pin header
Onboard CD-IN connector
Expansive Interface
Mini PCI
1 x Mini PCI socket
Power and Environment
Power
Requirement
Dimension
Temperature
DC 9~24V input with onboard 4-pin connector
146 (L) x 101(H) mm
Operating within 0 ~ 60℃
Storage within -20 ~ 85℃
Ordering Code
LE-374
LE-374X
Support Intel Atom N270 processor with onboard VGA, HDTV,
DVI, LVDS, Audio, SATA, Giga LAN, USB2.0, CF, GPIO, Mini
PCI, FDD
Support Intel Atom N270 processor with onboard VGA, HDTV,
DVI, LVDS (18/ 24 bit ), Audio, SATA, Giga LAN, USB2.0, CF,
GPIO, Mini PCI, FDD
The specifications may be different as the actual production.
For further product information please visit the website at http://www.commell.com.tw
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LE-374 User’s Manual
1.3 <Mechanical Drawing>
Unit: inch
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LE-374 User’s Manual
1.4 <Mechanical Drawing>
Intel Atom N270 Processor
1 x 200-pin DDR2
SO-DIMM SDRAM
Intel GMA950 Graphics
400/533 MHz
Intel 945 GSE
HDTV&LVDS
DVI
7307C
2 x SATA
CompactFlash&IDE
AC97 ALC655
ICH7M
4 x USB2.0 ports
Intel 82574L
1 x GLAN
Mini PCI
W83627THG
2 x Serial ports
8-bit GPIO
SPI
1 x IrDA
BIOS
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LE-374 User’s Manual
Chapter 2 <Hardware Setup>
2.1 <Connector Location>
CN_LVDS
SYSFAN CN_USB CN_IR
IDE CN_DVI
JFRNT
DC_IN
CN_INV DC_OUT
JAT
MINIPCI
CDIN
CN AUDIO
CN_DIO
SATA1/2
CN_HDTV
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CN_COM2
CPUFAN
LE-374 User’s Manual
DDRII
CF
RJ45
PS2
USB
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CRT
COM1
LE-374 User’s Manual
2.2 <Jumper Reference>
Jumper
JRTC
JVLCD
JAT
JCSEL1/2
Function
CMOS Operating/Clear Setting
LCD Panel Voltage Setting
AT Mode
COM2 RS232/422/485 mode setting
JVLCD
JRTC
JAT
JCSEL1
JCSEL2
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LE-374 User’s Manual
2.3 <Connector Reference>
2.3.1 <Internal Connector>
Connector
DDRII
IDE
SATA1/2
CN_AUDIO
CDIN
CN_DIO
CN_USB
CPUFAN
SYSFAN
CN_COM2
CN_IR
CF
CN_LVDS
CN_INV
DC_OUT
DC_IN
MINIPCI
CN_DVI
CN_HDTV
JFRNT
Function
200 -pin DDR2 SO-DIMM SDRAM slot
44-pin primary IDE connector
7-pin Serial ATA connector
5 x 2-pin audio connector
4-pin CD-ROM audio input connector
6 x 2-pin digital I/O connector
5 x 2-pin USB connector
4-pin CPU cooler fan connector
3-pin system cooler fan connector
5 x 2-pin com connector
5-pin IrDA connector
Compact Flash Type II socket
20 x 2-pin LVDS connector
5-pin LCD inverter connector
4-pin power output connector
DC 12V input connector
Mini-PCI socket
13 x 2-pin DVI interface
5 x 2-pin HDTV interface
14-pin switch/indicator connector
Remark
Standard
Slim
Standard
Slim
Standard
Standard
Standard
Standard
Standard
Slim
Standard
Standard
Standard
Standard
Standard
Standard
Standard
Standard
Standard
Standard
2.3.2 <External Connector>
Connector
CRT
USB
COM1
RJ45
PS2
Function
DB15 VGA connector
Dual USB 2.0 connector
DB9 Serial port connector
One RJ45 LAN connector
PS/2 keyboard and mouse connector
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Remark
Standard
Standard
Standard
Standard
Standard
LE-374 User’s Manual
2.4 <CPU and Memory Setup>
The board provides one 200-pin DDR2 SO-DIMM to support DDR2 533 memory
modules up to 2GB of capacity. Non-ECC, unbuffered memory is supported only.
DDRII
CF
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LE-374 User’s Manual
2.5 <CMOS&ATX Setup>
The board’s data of CMOS can be setting in BIOS. If the board refuses to boot due to
inappropriate CMOS settings, here is how to proceed to clear (reset) the CMOS to its
default values.
Jumper: JRTC
Type: Onboard 3-pin jumper
JRTC
1-2
2-3
Default setting
Mode
Clear CMOS
Normal Operation
Jumper: JAT
Type: onboard 2-pin header
JAT
Open
Short
Default setting
Mode
ATX Mode
AT Mode
3
JRTC
JAT
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LE-374 User’s Manual
2.6 <Enhanced IDE & CF Interface>
The board has one Ultra DMA33 IDE interface to support up to 2 ATAPI devices and one
Compact Flash Type II socket on the solder side.
43
44
1
IDE
2
CF
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LE-374 User’s Manual
2.7 <Serial ATA Interface>
Based on Intel ICH7M, the board provides two Serial ATA interfaces with up to 150MB/s
of transfer rate.
SATA1/2
2.8 <LAN Interface>
The Intel 82574L supports triple speed of 10/100/1000Base-T, with IEEE802.3
compliance and Wake-On-LAN supported.
LAN
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LE-374 User’s Manual
2.9 <Onboard Display Interface>
Based on Intel 945GSE chipset with built-in GMA (Graphic Media Accelerator) 950
graphics, the board provides one DB15 connector on real external I/O port, and one
40-pin LVDS interface with 5-pin LCD backlight inverter connector. The board provides
dual display function with clone mode and extended desktop mode for CRT, LCD and
TV-out.
2.9.1 <Analog VGA Interface>
Please connect your CRT or LCD monitor with DB15 male connector to the onboard
DB15 female connector on rear I/O port.
The board supports up to 2048 x 1536 (QXGA) of resolution.
CRT
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LE-374 User’s Manual
2.9.2 <Digital Display>
The board provides one 40-pin LVDS connector for 18 or 24 bit dual channel panels,
supports up to 1600 x 1200 (UXGA) of resolution, with one LCD backlight inverter
connector and one jumper for panel voltage setting
Note:
LE-374 supports 18 bit
LE-374X supports 18/ 24 bit
1
39
2
40
CN_LVDS
JVLCD
3
1
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1
5
CN_INV
LE-374 User’s Manual
Connector: CN_INV
Type: 5-pin LVDS Power Header
Connector model: JST B5B-XH-A
Pin
1
2
3
4
5
Description
+12V
GND
GND
GND
ENABKL
Connector: JVLCD
Type: 3-pin Power select Header
Pin
Description
1
VCC (5V)
2
LCDVCC
3
VCC3 (3.3)
Default: 2-3
Connector: CN_LVDS
Type: onboard 40-pin connector for LVDS connector
Connector model: HIROSE DF13-40DP-1.25V
Pin
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
Signal
LCDVCC
GND
ATX0ATX0+
GND
ATX1ATX1+
GND
ATX2ATX2+
GND
ACLKACLK+
GND
ATX3-(LE-374X)
ATX3+(LE-374X)
GND
N/C
N/C
N/C
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Pin
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
Signal
LCDVCC
GND
BTX0BTX0+
GND
BTX1BTX1+
GND
BTX2BTX2+
GND
BTX3-(LE-374X)
BTX3+(LE-374X)
GND
BCLKBCLK+
GND
N/C
N/C
N/C
LE-374 User’s Manual
To setup the LCD, you need the component below:
1.
A panel with LVDS interfaces.
2.
An inverter for panel’s backlight power.
3.
A LCD cable and an inverter cable.
For the cables, please follow the pin assignment of the connector to make a cable, because
every panel has its own pin assignment, so we do not provide a standard cable; please find
a local cable manufacture to make cables.
LCD Installation Guide:
1.
Preparing the LE-374, LCD panel and the backlight inverter
2.
Please check the datasheet of the panel to see the voltage of the panel, and set
the jumper JVLCD to +5V or +3.3V.
3.
You would need a LVDS type cable.
Panel side
Board side
For sample illustrator only
4.
To connect all of the devices well.
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LE-374 User’s Manual
After setup the devices well, you need to select the LCD panel
type in the BIOS.
The panel type mapping is list below:
LE-374 BIOS panel type selection form
On board 18 bit LVDS
Single channel
Dual channel
NO.
Output format
NO.
Output format
1
640 x 480
9
1280 x 768
2
800 x 480
3
800 x 600
4
1024 x 600
5
1024 x 768
6
1280 x 600
7
1280 x 768
8
1280x 800
LE-374X BIOS panel type selection form
On board 18/24 bit LVDS
NO.
Output format
1
640 x 480 single channel 24bit
2
800 x 480 single channel 24bit
3
1024 x 768 single channel 24bit
4
1280 x 1024 dual channel 24bit
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LE-374 User’s Manual
2.9.3 <DVI Interface >
The board also comes with a DVI interface with Chrontel CH7307C for digital video
interface. Supports up to 1600 x 1200 (UXGA) of resolution.
Connector: CN_DVI
Connector type: 26-pin header connector (pitch = 2.00mm)
Pin Number
1
3
5
7
9
11
13
15
17
19
21
23
25
25
Assignment
TX1+
Ground
TXC+
Ground
N/C
TX2+
Ground
TX0+
N/C
DDCDATA
GND
N/C
N/C
1
26
2
CN_DVI
-24-
Pin Number
2
4
6
8
10
12
14
16
18
20
22
24
26
Assignment
TX1Ground
TXCPVDD
N/C
TX2Ground
TX0HPDET
DDCCLK
N/C
N/C
N/C
LE-374 User’s Manual
2.9.4 <TV-out Interface>
The board provides an HDTV interface with Intel 945GSE, supports PAL and NTSC of
TV system, and display (clone or extended desktop) function with CRT, LVDS and DVI.
Connector: CN_HDTV
Connector type: 10-pin header HDTV connector (pitch = 2.54mm)
Pin Number
1
3
5
7
9
Assignment
GND
DACC
GND
DACA
N/C
Pin Number
2
4
6
8
10
9
1
10
2
CN_HDTV
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Assignment
DACB
N/C
GND
N/C
N/C
LE-374 User’s Manual
2.10 <Onboard Audio Interface>
The board provides the onboard AC97 5.1-channel audio interface with Realtek
ALC655
Connector: CN_AUDIO
Type: 10-pin (2 x 5) 2.0mm x 2.0 mm-pitch header
Pin
Description
Pin
Description
1
LIN_L
2
Ground
3
LIN_R
4
MIC 1
5
MIC 2
6
Ground
7
N/C
8
FRONTL
9
FRONTR
10
Ground
Connector: CDIN
Type: 4-pin header (pitch = 2.54mm)
Pin
Description
1
CD – Left
2
Ground
3
Ground
4
CD – Right
10
9
2
1
CN_AUDIO
4
1
CDIN
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LE-374 User’s Manual
2.11 <USB2.0 Interface>
Based on Intel ICH7M , the board provides 4 USB2.0 ports. The USB2.0 interface
provides up to 480Mbps of transferring rate.
Interface
USB2.0
Controller
ICH7M
Transfer Rate
Up to 480Mb/s
Output Current
500mA
CN_USB
10
2
CN_IR
5
1
USB
Connector: CN_USB
Type: 10-pin (5 x 2) header for USB Port
Pin
Description
Pin
1
VCC
2
3
Data04
5
Data0+
6
7
Ground
8
9
Ground
10
Description
VCC
Data1Data1+
Ground
N/C
PS: The USB2.0 will be only active when you connecting with the USB2.0 devices, if you
insert an USB1.1 device, the port will be changed to USB1.1 protocol automatically. The
transferring rate of USB2.0 as 480Mbps is depends on device capacity, exact
transferring rate may not be up to 480Mbps.
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LE-374 User’s Manual
2.12 <GPIO Interface>
The board provides a programmable 8-bit digital I/O interface; you can use this general
purpose I/O port for system control like POS or KIOSK.
Connector: CN_DIO
Type: onboard 2 x 6-pin header, pitch=2.0mm
Pin
1
3
5
7
9
11
12
Description
Ground
GP0
GP1
GP2
GP3
VCC
Pin
2
4
6
8
10
12
11
CN_DIO
2
1
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Description
Ground
GP4
GP5
GP6
GP7
+12V
LE-374 User’s Manual
2.13 <Serial Port Jumper Setting >
The board provides two RS232 serial ports, with jumper selectable RS422/485 for
COM2.
Connector: CN_COM2
Type: 10-pin (5 x 2) 1.27mm x 2.54mm-pitch header for COM2
Pin
1
3
5
7
9
Description
DCD/422TX-/485TXD/422RX+
GND
RTS
RI
Pin
2
4
6
8
10
1
10
2
Description
RXD/422TX+/485+
DTR/422RXDSR
CTS
N/C
JCSEL1 JCSEL2
5
1
11
1
6
2
12
2
5
1
11
1
6
2
12
2
5
1
11
1
6
2
12
2
RS-232
RS-485
RS-422
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LE-374 User’s Manual
9
1
10
2
CN_COM2
JCSEL1
5
1
JCSEL2
11
12
6
2
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2
LE-374 User’s Manual
2.14 <Power and Fan Connector >
The board requires DC input with 4-pin hear, the input voltage range is from 9V to 24V,
for the input current, please take a reference of the power consumption report on
appendix.
2.14.1 <Power Input>
Connector: DC_IN
Type: 4-pin header
Pin
1
2
Description
Ground
Ground
Pin
4
3
Description
+12V
+12V
Remark: DC input voltage range 9~24V
DC_IN
3
4
3
2
1
DC_OUT
4
SYSFAN
1
1
CPUFAN
4
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LE-374 User’s Manual
2.14.2 <Power Output>
Connector: DC_OUT
Type: 4-pin connector for +5V/+12V output
Pin Description Pin Description Pin Description Pin Description
1
+12V
2
Ground
3
Ground
4
+5V
Note: Maximum output current 12V/3A, 5V/3A
2.14.3 <Fan Connector>
Connector: SYSFAN
Type: 3-pin fan wafer connector
Pin
1
Description
Ground
Pin
2
Description
+12V
Pin
3
Description
Fan Control
Connector: CPUFAN
Type: 4-pin P-type connector
Pin
1
3
Description
Ground
Fan Speed Detection
-32-
Pin
2
4
Description
+12V
Sense
LE-374 User’s Manual
2.15 <Indicator and Switch>
The JFRNT provides front control panel of the board, such as power button, reset and
beeper, etc. Please check well before you connecting the cables on the chassis.
Connector: JFRNT
Type: onboard 14-pin (2 x 7) 2.54-pitch header
Function
Signal
PIN
Signal
HDLED+
1
2
PWRLED+
HDLED-
3
4
N/C
Reset+
5
6
PWRLED-
Reset-
7
8
SPK+
N/C
9
10
N/C
Power
PWRBT+
11
12
N/C
Button
PWRBT-
13
14
SPK-
IDE LED
Function
Power
LED
Reset
Speaker
JFRNT
13
1
14
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LE-374 User’s Manual
Chapter 3 <System Configuration>
3.1 <Video Memory Setup>
Based on Intel® 945GSE chipset with GMA (Graphic Media Accelerator) 950, the board
supports Intel® DVMT (Dynamic Video Memory Technology) 3.0, which would allow the
video memory to be allocated up to 224MB.
To support DVMT, you need to install the Intel GMA 950 Driver with supported OS.
BIOS Setup:
On-Chip Frame Buffer Size:
This item can let you select video memory which been allocated for legacy VGA and
SVGA graphics support and compatibility. The available option is 1MB and 8MB.
Fixed + DVMT Memory Size:
You can select the fixed amount and the DVMT amount at the same time for a
guaranteed video memory and additional dynamic video memory, please check the
table below for available setting.
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LE-374 User’s Manual
Notice:
1. The On-Chip Frame Buffer Size would be included in the Fixed Memory.
Please select the memory size according to this table.
On-Chip
Fixed
DVMT
Total
System
Frame
Memory
Memory
Graphic
Memory
Buffer Size
Size
Size
Memory
1MB
32MB
0MB
32MB
1MB
0MB
32MB
32MB
128MB~255MB
8MB
32MB
0MB
32MB
8MB
0
32MB
32MB
1MB
64MB
0MB
64MB
1MB
0
64MB
64MB
1MB
128MB
0MB
128MB
1MB
0
128MB
128MB
1MB
64MB
64MB
128MB
8MB
64MB
0MB
64MB
256MB~511MB
8MB
0
64MB
64MB
8MB
128MB
0MB
128MB
8MB
0
128MB
128MB
8MB
64MB
64MB
128MB
1MB
64MB
0
64MB
1MB
0
64MB
64MB
1MB
128MB
0
128MB
1MB
0
128MB
128MB
1MB
64MB
64MB
128MB
512MB upper
8MB
64MB
0
64MB
8MB
0
64MB
64MB
8MB
128MB
0
128MB
8MB
0
128MB
128MB
8MB
64MB
64MB
128MB
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LE-374 User’s Manual
3.2 <Audio Configuration >
The board provides 5.1 channel audio interface with driver installed, please install the
Realtek ALC655 audio driver in the CD before getting start to enjoy the 5.1 channel
sound system.
1.
Install REALTEK AC97 Audio driver.
2.
Lunch the control panel and Sound Effect Manager.
3.
Select Speaker Configuration.
4. Select the sound mode to meet your speaker system.
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LE-374 User’s Manual
Chapter 4 <BIOS Setup>
The motherboard uses the Award BIOS for the system configuration. The Award
BIOS in the single board computer is a customized version of the industrial standard
BIOS for IBM PC AT-compatible computers. It supports Intel x86 and compatible
CPU architecture based processors and computers. The BIOS provides critical
low-level support for the system central processing, memory and I/O sub-systems.
The BIOS setup program of the single board computer let the customers modify the
basic configuration setting. The settings are stored in a dedicated battery-backed
memory, NVRAM, retains the information when the power is turned off. If the battery
runs out of the power, then the settings of BIOS will come back to the default setting.
The BIOS section of the manual is subject to change without notice and is provided
here for reference purpose only. The settings and configurations of the BIOS are
current at the time of print, and therefore they may not be exactly the same as that
displayed on your screen.
To activate CMOS Setup program, press <DEL> key immediately after you turn
on the system. The following message “Press DEL to enter SETUP” should appear in
the lower left hand corner of your screen. When you enter the CMOS Setup Utility,
the Main Menu will be displayed as Figure 4-1. You can use arrow keys to select
your function, press <Enter> key to accept the selection and enter the sub-menu.
Figure 4-1 CMOS Setup Utility Main Screen
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LE-374 User’s Manual
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LE-374 User’s Manual
Appendix A <I/O Port Pin Assignment>
A.1 <IDE Port>
Connector: IDE
43
1
44
2
Type: 44-pin (22 x 2) box header
Pin
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
Description
Reset
D7
D6
D5
D4
D3
D2
D1
D0
Ground
REQ
IOW-/STOP
IOR-/HDMARDY
IORDY/DDMARDY
DACKIRQ
A1
A0
CS1
ASP1
Vcc
Ground
Pin
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
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Description
Ground
D8
D9
D10
D11
D12
D13
D14
D15
N/C
Ground
Ground
Ground
Ground
Ground
N/C
SD
A2
CS3
Ground
Vcc
Ground
LE-374 User’s Manual
A.2 <IrDA Port>
Connector: CN_IR
Type: 5-pin header for SIR Port
Pin
Description
1
Vcc
2
N/C
3
IRRX
4
Ground
5
IRTX
5
1
6
A.3 < CRT Port >
Connector: CRT
Type: 15-pin D-sub female connector on rear panel
Pin
Description
Pin
Description
1
RED
6
Ground
2
GREEN
7
Ground
3
BLUE
8
Ground
4
N/C
9
LVGA5V
5
Ground
10
Ground
1
2
3
4
5
11
12
13
14
15
10
Pin
11
12
13
14
15
Description
N/C
5VCDA
HSYNC
VSYNC
5VCLK
A.4 <Serial ATA Port>
Connector: SATA1/2
1
Type: 7-pin wafer connector
1
2
3
4
5
7
6
7
GND RSATA_TXP1 RSATA_TXN1 GND RSATA_RXN1 RSATA_RXP1 GND
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LE-374 User’s Manual
A.5 <Serial Port>
5
4
3
2
1
Connector: COM1
Type: 9-pin D-sub male connector on rear panel
Pin
Description
Pin
Description
1
DCD
6
DSR
2
SIN
7
RTS
3
SO
8
CTS
4
DTR
9
RI
5
Ground
A.6 <LAN Port>
9
8
7
6
1
Connector: RJ45
Type: RJ45 connector with LED on rear panel
8
Pin
1
2
3
4
5
6
7
8
Description TRD0+ TRD0- TRD1+ TRD2+ TRD2- TRD1- TRD3+ TRD3-
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LE-374 User’s Manual
Appendix B <Flash BIOS>
B.1 BIOS Auto Flash Tool
The board is based on Award BIOS and can be updated easily by the BIOS auto
flash tool. You can download the tool online at the address below:
http://www.award.com
http://www.commell.com.tw/support/support.htm
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File name of the tool is “awdflash.exe”, it’s the utility that can write the data into the
BIOS flash ship and update the BIOS.
B.2 Flash Method
1. Please make a bootable floppy disk.
2. Get the last .bin files you want to update and copy it into the disk.
3. Copy awardflash.exe to the disk.
4. Power on the system and flash the BIOS. (Example: C:/ awardflash XXX.bin)
5. Re-star the system.
Any question about the BIOS re-flash please contact your distributors or visit the
web-site at below:
http://www.commell.com.tw/support/support.htm
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LE-374 User’s Manual
Appendix C <System Resources>
C.1 <I/O Port Address Map>
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C.2 <Memory Address Map >
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LE-374 User’s Manual
C.3 < System IRQ Resources >
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LE-374 User’s Manual
Appendix D <Programming GPIO’s>
The GPIO can be programmed with the MSDOS debug program using simple
IN/OUT commands.The following lines show an example how to do this.
GPIO0…..GPIO7 bit0……bit7
-o 2E 87
;enter configuration
-o 2E 87
-o 2E 29
-o 2F 40
;enable GPIO function
-o 2E 07
-o 2F 07
Select Logic Device 7
-o 2E F0
-o 2F xx
;set GPIO as input/output; set ‘1’ for input,’0’for
output
-o 2E F1
-o 2F xx
;if set GPIO’s as output,in this register its value can
be set
Optional :
-o 2E F2
-o 2F xx
; Data inversion register ; ‘1’ inverts the current valus
of the bits ,’0’ leaves them as they are
-o 2E 30
-o 2F 01
; active GPIO’s
For further information, please refer to Winbond W83627THF datasheet.
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LE-374 User’s Manual
Appendix E <Watch Dog timer Setting >
The watchdog timer makes the system auto-reset while it stops to work for a period. The
integrated watchdog timer can be setup as system reset mode by program.
Timeout Value Range
- 1 to 255
- Second or Minute
Program Sample
Watchdog timer setup as system reset with 5 second of timeout
2E, 87
2E, 87
2E, 07
2F, 08
Logical Device 8
2E, 30
Activate
2F, 01
2E, F5
Set as Second*
2F, 00
2E, F6
Set as 5
2F, 05
* Minute: bit 3 = 0; Second: bit 3 = 1
You can select Timer setting in the BIOS, after setting the time options, the system
will reset according to the period of your selection.
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LE-374 User’s Manual
Contact Information
Any advice or comment about our products and service, or
anything we can help you please don’t hesitate to contact with us.
We will do our best to support you for your products, projects and
business.
Taiwan Commate Computer Inc.
Address
19F., No.94, Sec. 1, Xintai 5th Rd., Xizhi Dist., New Taipei City
22102, Taiwan
TEL
+886-2-26963909
FAX
+886-2-26963911
http://www.commell.com.tw
Website
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info@commell.com.tw (General Information)
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E-Mail
tech@commell.com.tw (Technical Support)
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