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Advantech SOM-4450 ETX User`s manual
SOM-DB4400
ETX Development Board
User's Manual
Copyright notice
This document is copyrighted, 2001, by Advantech Co., Ltd. All rights
are reserved. The original manufacturer reserves the right to make
improvements to the products described in this manual at any time
without notice.
No part of this manual may be reproduced, copied, translated or
transmitted in any form or by any means without the prior written
permission of the original manufacturer. Information provided in this
manual is intended to be accurate and reliable. However, the original
manufacturer assumes no responsibility for its use, nor for any
infringements upon the rights of third parties which may result from its
use.
Acknowledgements
SOM and DTOS are trademarks of Advantech Co., Ltd.
AMD is a trademark of Advanced Micro Devices, Inc.
Award is a trademark of Award Software International, Inc.
Cyrix is a trademark of Cyrix Corporation.
IBM, PC/AT, PS/2 and VGA are trademarks of International Business
Machines Corporation.
Intel and Pentium are trademarks of Intel Corporation.
Microsoft Windows® is a registered trademark of Microsoft Corp.
RTL is a trademark of Realtek Semiconductor Co., Ltd.
C&T is a trademark of Chips and Technologies, Inc.
UMC is a trademark of United Microelectronics Corporation.
Winbond is a trademark of Winbond Electronics Corp.
STPC is a trademark of SGS Thomson Corp.
For more information on this and other Advantech products, please
visit our website at: http://www.advantech.com
For technical support and service, please visit our support website at:
http://www.advantech.com/support
This manual is for the SOM-DB4400
Part No. 2006440001
2nd Edition Printed in Taiwan June 2002
ii
Version History
June, 2002: SOM-DB4400 User's Manual 2nd edition (Part no.
2006440001) Corrected error on page 14: Sec. 2.5 Connector Location
X3 and X4 reversed.
September 2001, SOM-DB4400 User's Manual 1st edition (Part no.
2006440000)
iii
Packing list
Before you begin installing your card, please make sure that the
following materials have been shipped:
• 1 SOM-DB4400 ETX Development Board
• CD-ROM or Disks for utility, drivers, including manual (in PDF
format)
• 1 warranty certificate
If any of these items are missing or damaged, contact your distributor
or sales representative immediately.
iv
Contents
CHAPTER 1 General Information .................................. 1
1.1
1.2
1.3
1.4
Introduction ......................................................................... 2
Specifications ....................................................................... 3
Safety precautions ............................................................... 4
Board layout: dimensions .................................................. 5
CHAPTER 2 Connecting Peripherals ........................... 7
2.1
2.2
2.3
2.4
2.5
2.6
Board layout: Jumper and connector locations ............. 8
Jumpers and Connectors ................................................... 9
Setting jumpers ................................................................. 13
Connector Locations ........................................................ 14
Pin Assignments (X1,X2,X3,X4 connectors) ................ 15
Safety precautions ............................................................. 15
CHAPTER 3 Connector Descriptions ......................... 17
3.1 IDE hard drive connector (CN7) .................................... 18
3.2 CompactFlash disk interface (CN6) ............................... 19
3.3 Floppy drive connector (CN8) ........................................ 19
3.4 Parallel port connector (CN19) ...................................... 20
3.5 PS/2 keyboard and mouse connector (CN29) .............. 21
3.6 IR header (CN14) ............................................................. 21
3.7 Audio interfaces (CN3) .................................................... 21
3.9 Serial ports (CN13, CN15) .............................................. 22
3.10 VGA interface connections (CN11, CN31) ................. 22
3.11 Ethernet RJ-45 connector and USB connector(C21) 24
3.12 TV-out S-video connector (CN28) ............................... 24
3.13 PCI slots (PCI 1~3) ........................................................ 24
3.14 400-pin ETX socket(X1, X2, X3, X4) .......................... 24
APPENDIX A Pin Assignments .................................... 25
A.1 ATX power connector (CN2) .......................................... 26
A.2 IDE hard drive connector (CN7) ................................... 27
v
A.3 Floppy drive connector (CN8) ....................................... 28
A.4 IR connector (CN14) ....................................................... 29
A.5 S-Video connector (CN28) .............................................. 30
A.6 TV-out connector (CN28) ............................................... 30
A.7 24-bit Flat panel connector (CN31) ............................... 31
A.9 LCD Signal Mapping ....................................................... 32
A.10 Parallel Port connector (CN19) ................................... 33
A.11 VGA connector (CN11) ................................................. 34
A.12 COM1 RS-232 serial port (CN13) .............................. 35
A.13 COM2 RS-232 connector (CN15) ............................... 35
A.14 Keyboard connnector (CN 29 lower) .......................... 36
A.15 Mouse connnector (CN 29 upper) .............................. 36
APPENDIX B LVDS Connection ................................. 37
B.1
B.2
LVDS Introduction ......................................................... 38
LVDS Pin assingments .................................................. 39
vi
CHAPTER
1
General Information
This chapter provides background
information for the SOM-DB4400.
Sections include:
• Card specifications
• Board layout
1.1
Introduction
With the SOM-DB4400 and its reference circuits, users may quickly
test their specific SOM-ETX module and easily design their own
solution boards for the SOM-ETX.
Advantech’s new SOM-ETX is a form factor designed to increase
efficiency and effectiveness in embedded systems. This product
facilitates easier system design by eliminating expensive connectors and cumbersome adapter cables. These solutions make it more
simple to customize a system using an off the shelf embedded PC
and reduces the time to market of the product. This standard is a
reference for dimensions and pinouts of SOM-ETX boards. Each SOMETX CPU board provides a different set of features. Please see the
SOM-ETX CPU board manual for details about the product or
contact your supplier to enquire about supported features.
The SOM-ETX boards are interchangeable as long as they provide
the same features (i.e. 2 channel LVDS video output). In order to
maintain this compatibility, ask your supplier or application
engineers for assistance.
To learn about SOM-ETX basic functions, refer to the SOM-ETX
evaluation schematic. This material better explains and clarifies
information about features. Some of the non-standard features,
such as the panel interface, are not usable usless the appropriate
external parts are used.
Parts for EMV/ ESD protection are not included on the SOM-ETX
CPU board. Also note that SOM-ETX signals do not need an
external Pull-up or Pull down.
If you are creating a backplane for SOM-ETX boards ensure that
you have the appropriate experience with PCI device development.
It is also ideal to be familiar with signal integrity and timing when
laying out your backplane.
2
SOM-DB4400 User's Manual
1.2
Specifications
• FlexATX board size and connector allocation on edge
• Two PCI-bus and two ISA expansion slots
• One DB-15 VGA connector
• RJ-45 Ethernet connector
• One DB-9 COM1 serial port connector
• One DB-9 serial port for RS-232/422/485, jumper
selected
• Two USB connectors
• One LCD connector (up to 48 bits)
• One CompactFlash™ socket (type II)
• One DB-25 printer port connector
• One FDD connector and one HDD connector (40-pin)
• One 6-pin PS/2 KB/mouse connector (Keyboard/Mouse
split)
• Three phone jack connectors (Line-in, line-out, Mic-in)
• One CD-in connector
• One TV-out connector (AV terminal)
• One Audio Codec
• One IRDA
Mechanical and Environmental
Power supply : ATX power supply
Max. Power requirements: 5 W
Operating temperature: 0 to 60° C (32 to 140° F )
Board Size: 229 mm x 191mm
Weight: 0.35 Kg
Chapter 1 General Information
3
1.3
4
Safety precautions
Warning!
Always completely disconnect the power cord from
your chassis whenever you are working on it. Do
not make connections while the power is on
because sensitive electronic components can be
damaged by the sudden rush of power. Only
experienced electronics personnel should open
the PC chassis.
Caution!
Always ground yourself to remove any static
charge before touching the CPU card. Modern
electronic devices are very sensitive to static
electric charges. Use a grounding wrist strap at all
times. Place all electronic components on a
static-dissipative surface or in a static-shielded
bag when they are not in the chassis.
SOM-DB4400 User's Manual
1.4 Board layout: dimensions
Fig 1-1: SOM-DB4400 Dimensions
Chapter 1 General Information
5
6
SOM-DB4400 User's Manual
CHAPTER
2
Connecting Peripherals
This chapter tells how to set up the SOMDB4400 hardware.
2.1 Board layout: Jumper and connector
locations
CN22 J7 J4
CN29
CN21
• •
•
•
X4
J5
CN19,13,11
•
J2
•
•
• •
• •
•
• • •
•
••
J6
CN15
CN3
CN31 CN14 CN28 J1
•
•
•
•
•
•
•
•
CN16,17, 32, 33
CN7
•
SOM-DB4400 User's Manual
CN6
X2
•
•
•
CN1,18, 34
SOM-DB4400 Jumpers & Connectors
8
X3
CN8
CN5
•
X1
CN2
2.2 Jumpers and connectors
Connectors on the board link it to external devices such as hard disk
drives, a keyboard or expansion bus connectors. In addition, the board
has a number of jumpers that allow you to configure your system to
suit your application.
The table below lists the function of each of the board jumpers and
connectors:
Table 2-1: connectors
Name
CN 1
CN 2
CN 3
CN 5
CN
CN
CN
CN
CN
CN
CN
CN
CN
CN
CN
CN
CN
CN
CN
CN
CN
CN
CN
6
7
8
11
13
14
15
16
17
18
19
21
22
28
29
31
32
33
34
Function
ISA Slot
ATX Power Connector
Audio Connector
Secondary Slaver IDE 22X2 Pins Box Header
Connector
Compact Flash
Primary IDE 20X2 Pins Box Header Connector
FDD 17X2 Pins Box Header Connector
CRT 15 Pins D-Type Connector
COM1 9 Pins D-Type Connector
SIR 5X1 Pins Wafer Box Connector
COM2 5X2 Box Header Connector
PCI1 Slot
PCI2 Slot
ISA Slot
LPT1 25 Pins D-Type Connector
USB & LAN Connector
Internal KB & Mouse 6X1 Wafer Box Connector
TV Out 3X2 Pins Pin Header Connector
PS2 KB & Mouse Connector
24-bit LCD connector
PCI3 Slot
PCI4 Slot
ISA Slot
Chapter 2 Connecting peripherals
9
Table 2-2: Jumpers
Label
J1
J2
J4
J5
J6
J7
Function
System Function
WatchDog Reset Clear RTC
COM1, COM2 Voltage select
COM1, COM2 Ring/Voltage select
Select RS232 or RS485 or RS422
Select KB and MOUSE
Table 2-3: J1: System Function Connector *: LOW ACTIVE
Pin
1
3
5
7
9
11
13
15
17
19
10
Function
PW LED
PW LED
PW LED GND
KBLOCK*
KBLOCK* GND
PANSW* GND
PANSW*
NC
NC
GND
SOM-DB4400 User's Manual
Pin
2
4
6
8
10
12
14
16
18
20
Function
+5V
GND
SPKB
SPKA
NC
HDDLED
HDDLED +5V
NC
FPRST*
FPRST* GND
Table 2-4: J2: Watchdog Reset Clear RTC
Close Pins
1-2
2-3
Function
Reset
Clear RTC
Table 2-5: J4: COM1, COM2 Voltage select
Close Pins
2-4
4-6
Close Pins
1-3
3-5
COM1
+5 V*
+ 12 V
COM2
+5 V*
+ 12 V
* default
Table 2-6: J5: COM3, COM4 Ring/Voltage select
Close Pins
2-4
4-6
Close Pins
1-3
3-5
COM3
Voltage
Ring*
COM4
Voltage
Ring*
* default
Chapter 2 Connecting peripherals
11
Table 2-7: J6: RS-232, RS-485, RS-422 Select
RS232*
5-6
7-9
8-10
13-15
14-16
RS485
3-4
9-11
10-12
15-17
16-18
* default
12
SOM-DB4400 User's Manual
RS422
1-2
9-11
10-12
15-17
16-18
2.3 Setting jumpers
You may configure your card to match the needs of your application
by setting jumpers. A jumper is a metal bridge used to close an electric
circuit. It consists of two metal pins and a small metal clip (often
protected by a plastic cover) that slides over the pins to connect them.
To "close" a jumper, you connect the pins with the clip. To "open” a
jumper, you remove the clip. Sometimes a jumper will have three pins,
labeled 1, 2 and 3. In this case you would connect either pins 1 and 2,
or 2 and 3.
1
Open
Closed
2
3
Closed 2-3
The jumper settings are schematically depicted in this manual as
follows:
1 2 3
Open
Closed
Closed 2-3
A pair of needle-nose pliers may be helpful when working with
jumpers.
If you have any doubts about the best hardware configuration for
your application, contact your local distributor or sales representative
before you make any changes.
Generally, you simply need a standard cable to make most connections.
Chapter 2 Connecting peripherals
13
2.4 Connector Locations
The board has a number of connectors that allow you to configure
your system to suit your application.
The tables below shows the function of each of the board's connectors:
SOM-DB4400 ETX Pinout
14
SOM-DB4400 User's Manual
2.5 Pin Assignments (X1,X2,X3,X4 connectors)
Please Refer to the SOM-ETX Design and Specification guide for pin
assignment and description information.
2.6 Safety precautions
Warning! Always completely disconnect the power cord from
your board whenever you are working on it. Do not
make connections while the power is on, because
sensitive electronic components can be damaged by
a sudden rush of power.
Caution!
Always ground yourself to remove any static charge
before touching the board. Modern electronic devices
are very sensitive to static electric charges. Use a
grounding wrist strap at all times. Place all electronic
components on a static-dissipative surface or in a
static-shielded bag when they are not in the chassis.
Chapter 2 Connecting peripherals
15
16
SOM-DB4400 User's Manual
CHAPTER
3
Connector Descriptions
This chapter tells how to set up the SOMDB4400, including connecting peripherals,
switches and indicators.
3.1 IDE hard drive connector (CN7)
You can attach two IDE (Integrated Device Electronics) drives/
devices to the SOM-DB4400 through a EIDE connector (CN7).
Connecting drives is done in a daisy-chain fashion and requires
one or two cables, depending on the drive size. 2.5" drives need a
1 x 40-pin to 2 x 44-pin flat-cable connector. 3.5" drives use a 1 x 40pin to 2 x 40-pin cable. However, the required cables are not
included in the SOM-DB4400 package.
Wire number 1 on the cable is red or blue, and the other wires are
gray.
1. Connect one end of the cable to CN7. Make sure that the red (or
blue) wire corresponds to pin 1 on the connector, which is
labeled on the board (on the right side).
2. Plug the other end of the cable to the Enhanced IDE hard drive,
with pin 1 on the cable corresponding to pin 1 on the hard
drive. (See your hard drive's documentation for the location of
the connector.)
Connect a second drive as described above.
Unlike floppy drives, IDE hard drives can connect to either end of
the cable. If you install two drives, you will need to set one as the
master and one as the slave by using jumpers on the drives. If you
install just one drive, set it as the master.
18
SOM-DB4400 User's Manual
3.2 CompactFlash disk interface (CN6)
The CompactFlash socket is specially designed to prevent any
incorrect installation of the CompactFlash disk card. When
installing or removing the CompactFlash disk card, please make
sure that the system power is off. The CompactFlash disk card is
defaulted to drive E: in your system.
3.3 Floppy drive connector (CN8)
You can attach up to two floppy drives to the the SOM-DB4400 onboard controller. The recommend drives are 3.5" drives.
A 34-pin daisy-chain drive connector cable is required for a dualdrive system. A 34-pin flat-cable connector is fitted on one end of
the cable while the other end sports two sets of floppy disk drive
connectors. Each set consists of a 34-pin flat-cable connector (for
the 3½” drives) and a printed-circuit board connector (for the 5¼”
drives).
1. Plug in the 34-pin flat-cable connector into CN8. Make sure that
the red wire corresponds to pin 1 on the connector.
2. Attach the appropriate conector at the other end of the cable to
the floppy drive(s). You can use only one connector in the set.
The set at the other end (after the twist in the cable) connects
to the A: drive. The set in the middle connects to the B: drive.
3. If you are connecting a 5¼” floppy drive, line up the slot in the
printed circuit board with the blocked-off part of the cable
connector.
When connecting a 3½” floppy drive, you may have some difficulties in determining which pin is pin number one. Look for a number
on the circuit board indicating pin number one. In addition, you
should check if the connector on the floppy drive has an extra slot.
If the slot is up, pin number one should be on the right. Please refer
to any documentation that came with the drive for more information.
Chapter 2 Connector Information
19
If needed, connect the B: drive to the connectors in the middle of
the cable as described as above.
If your cable needs to be custom made, you can find the pin
assignments for the board's connector in Appendix A.
3.4 Parallel port connector (CN19)
Normally, the parallel port is used to connect to a printer. The SOMDB4400 includes a multi-mode (ECP/EPP/SPP) parallel port,
accessed through 25-pin DB-25 connector.
You will need an adapter cable if you use a traditional DB-25
connector. The adpater cable should have a 26-pin connector on
one end and a 25-DB connector on the other.
The parallel port is designated as LPT1 and can be disabled.
20
SOM-DB4400 User's Manual
3.5
PS/2 keyboard and mouse connector
(CN29)
The SOM-DB4400 board provides 2 PS/2 connectors for a PS/2
keyboard, the lower, and a PS/2 mouse, the upper, respectively.
3.6
IR header (CN14)
The SOM-DB4400 provides an 5-pin IR header. To choose different
transferring rate, Please refer its pin definition for further IR module
installation.
3.7 Audio interfaces (CN3)
The SOM-DB4400 provides three audio phone jack connectors
includeMicrophone in (mono), Line in (stereo) and Line out
(stereo).
Chapter 2 Connector Information
21
3.9
Serial ports (CN13, CN15)
The SOM-DB4400 offers two serial ports connection: one with DB15 connector (COM1,CN13) and the other is 10 -pin header (COM2,
CN15) RS-232 signal output. These ports allow you to connect to
any serial device (a mouse, printers, etc.) or communication
network.
Table 2-5: Serial port default settings
Port
COM1
COM2
Address
3E8, 3F8
2E8, 2F8
Interrupt
IRQ4
IRQ3
Default
3F8
2F8
3.10 VGA interface connections (CN11,
CN31)
The SOM-DB4400 board's SVGA interface can facilitates conventional CRT displays as well as active LCD displays. It can support
display fucntion provided either by the SOM 144/PCI module or by
its on-board VGA controller.
3.10.1 CRT connector for on-board VGA (CN11)
CN4 is a 15-pin, D-SUB connector commonly used for conventional
CRT displays.
Detailed information on pin assignments for CRT display connector
CN4 is given in Appendix A.
22
SOM-DB4400 User's Manual
3.10.5 Flat panel display connector for the SOM
144 module (CN31)
When the SOM-ETX module, such as SOM-4450, installed on the
SOM-DB4400 supports LCD display, the LCD signal will be
connected to CN31. The pin assignments for CN31 can be found in
Appendix A.
Chapter 2 Connector Information
23
3.11 Ethernet RJ-45 connector and USB
connector(C21)
3.11.1 Ethernet connector (CN21, the upper)
When the SOM-ETX PCI module on the SOM-DB4400 is equipped
with Ethernet feature, users may test such function from the SOMDB4400's RJ-45 Ethernet connector (CN21, the upper)
3.11.2 USB connector(CN21, the lower)
The SOM-DB4400 board provides two USB (Universal Serial Bus)
interfaces.
The USB interfaces can be disabled in the system BIOS setup.
3.12 TV-out S-vedio connector (CN28)
The TV-out's pin assignment can be found in Appendix A.
3.13 PCI slots (PCI 1~3)
The PCI slot are used for connecting the SOM-DB4400 to an PCI
expansion card.
3.14 400-pin ETX socket(X1, X2, X3, X4)
Please refer Chapter 2 of SOM ETX Design Specification Rev. 2.1
24
SOM-DB4400 User's Manual
APPENDIX
A
Pin Assignments
This appendix contains information of a
detailed or specialized nature. It includes:
•
•
•
•
•
•
•
•
•
•
•
•
•
ATX Power connector (CN2)
IDE hard drive connector (CN7)
Floppy drive connector (CN8)
IR connector (CN14)
CD audio connector (CN10)
TV-out connector (CN28)
24-bit Flat panel connector (CN31)
Parallel Port connector (CN19)
VGA connector (CN11)
COM1 RS-232 serial port (CN13)
COM2 RS-232 connector (CN15)
Keyboard connnector (CN 29 lower)
Mouse connnector (CN 29 upper)
connector
Appendix A Pin Assignments
25
A.1 ATX power connector (CN2)
Table A-1: ATX power connector
Pin
1
3
5
7
9
11
13
15
17
19
Pin Name
3.3 V
GND
GND
GND
+ 5 VSB
3.3 V
GND
GND
GND
+5 V
*low active
26
SOM-DB4400 User's Manual
Pin
2
4
6
8
10
12
14
16
18
20
Pin Name
3.3 V
+5V
+5V
PWROK
+12 V
-12 V
PSON*
GND
-5 V
+5 V
A.2 IDE hard drive connector (CN7)
Table A-2: IDE hard drive connector
Pin
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
Signal
IDE RESET*
DATA 7
DATA 6
DATA 5
DATA 4
DATA 3
DATA 2
DATA 1
DATA 0
SIGNAL GND
DRQ*
IO WRITE*
IO READ*
IO CHANNEL READY
ACK
IRQ14 (IDE IRQ)
ADDR 1
ADDR 0
HARD DISK
SELECT 0
IDE ACTIVE*
Pin
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
Signal
GND
DATA 8
DATA 9
DATA 10
DATA 11
DATA 12
DATA 13
DATA 14
DATA 15
N/C
GND
GND
GND
N/C
GND
IOCS16*
N/C
ADDR 2
HARD DISK
SELECT 1
GND
40
39
* low active
Appendix A Pin Assignments
27
A.3 Floppy drive connector (CN8)
Table A-3: Floppy drive connector
Pin
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
Signal
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
* low active
28
SOM-DB4400 User's Manual
Pin
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
Signal
DENSITY SELECT*
N/C
N/C
INDEX*
MOTOR 0*
DRIVE SELECT 1*
DRIVE SELECT 0*
MOTOR 1*
DIRECTION*
STEP*
WRITE DATA*
WRITE GATE*
TRACK 0*
WRITE PROTECT*
READ DATA*
HEAD SELECT*
DISK CHANGE*
A.4 IR connector (CN14)
Table A-4: IR connector
Pin
1
2
3
4
5
Signal
+5 V (VCC)
FIR/C IR
IR_RX
GND
IR_TX
5
4
3
2
1
Appendix A Pin Assignments
29
A.6 TV-out connector (CN28)
2
4
6
4
2
1
3
5
Table A-5: S-Video connector
Pin
1
2
3
4
5
6
30
Signal
LUMF
CHROMF
COMPOSITEF
GND
CSYNC
GND
SOM-DB4400 User's Manual
3
1
A.7 24-bit Flat panel connector (CN31)
Table A-6: 24-bit LCD display connector (CN15)
Pin
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
Note:
Signal
VDDSAFE5
GND
VDDSAFE3
Vcon
P0
P2
P4
P6
P8
P10
P12
P14
P16
P18
P20
P22
GND
SHIFT CLOCK
M
N/C
Pin
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
Signal
VDDSAFE5
GND
VDDSAFE3
GND
P1
P3
P5
P7
P9
P11
P13
P15
P17
P19
P21
P23
GND
FILM
LP
ENAVEE
The model number of the CN15 and CN30
socket is DF13A-40DP-1.25V
(Hirose Electric Co., Ltd.)
Appendix A Pin Assignments
31
A.9 LCD Signal Mapping
LC D
C o n n ect
LC D
Pin Name
16-bit DSTN
18-bit TFT
24-bit TFT
P0
LD 0
B0
B0
P1
LD 1
B1
B1
P2
LD 2
B2
B2
P3
LD 3
B3
B3
P4
LD 4
B4
B4
P5
LD 5
B5
B5
P6
LD 6
N/A
B6
P7
LD 7
N/A
B7
P8
N/A
G0
G0
P9
N/A
G1
G1
P 10
N/A
G2
G2
P11
N/A
G3
G3
P 12
UD0
G4
G4
P 13
UD1
G5
G5
P 14
UD2
N/A
G6
P 15
UD3
N/A
G7
P 16
UD4
R0
R0
P 17
UD5
R1
R1
P 18
UD6
R2
R2
P 19
UD7
R3
R3
P 20
R4
R4
P 21
R5
R5
C N 31
32
P 22
R6
P 23
R7
SOM-DB4400 User's Manual
A.10 Parallel Port connector (CN19)
15 14
25 23
2 1
13 12
Table A-8: Parallel port connector (CN 9)
Pin
1
Signal
STROBE*
Pin
2
Signal
D0
3
D1
4
D2
5
D3
6
7
D5
8
D6
9
D7
10
\ACK
11
BUSY
12
PE
13
SLCT
14
AUTOFD
15
ERR
16
INIT
17
SLIN
18
GND
19
GND
20
GND
21
GND
22
GND
23
GND
24
GND
25
GND
D4
* Low active
Appendix A Pin Assignments
33
A.11 VGA connector (CN11)
5
1
10
6
15
11
Table A-9: VGA connector (CN4)
Pin
1
2
3
4
5
6
7
8
34
Signal
RED
GREEN
BLUE
N/C
GND
GND
GND
GND
SOM-DB4400 User's Manual
Pin
9
10
11
12
13
14
15
Signal
N/C
GND
N/C
SDA
H-SYNC
V-SYNC
SCL
A.12 COM1 RS-232 serial port (CN13)
5
1
6
9
Table A-10: COM1 RS-232 serial port
Pin
1
2
3
4
5
6
7
8
9
Signal
DCD
RxD
TxD
DTR
GND
DSR
RTS
CTS
RI
A.13 COM2 RS-232 connector (CN15)
9
7 5 3 1
10 8 6 4 2
Table A-11: COM2 RS-232 connector (CN5)
Pin
1
2
3
4
5
RS-232 port
DCD
DSR
RxD
RTS
TxD
Pin
6
7
8
9
10
RS-232 port
CTS
DTR
RI
GND
N/C
Appendix A Pin Assignments
35
A.14 Keyboard connnector (CN 29 lower)
6
5
4
3
2
1
Table A-12: Keyboard and mouse connector
Pin
1
2
3
4
5
6
Signal
KB Data
N/C
GND
Vcc
KB Clock
N/C
A.15 Mouse connnector (CN 29 upper)
6
5
4
3
2
1
Table A-13: Keyboard and mouse connector
Pin
1
2
3
4
5
6
36
Signal
N/C
MSDATA
GND
Vcc
N/C
MSCLK
SOM-DB4400 User's Manual
APPENDIX
B
LVDS Connection
This appendix contains information
concerning the LVDS installation and pin
assignments.
B.1 LVDS Introduction
When you mention the impressive data rate of 400 Mbps at 15 meters
for LVDS, you immediately realize how significant the differences are
between analog and digital interfaces. There are several other factors
other than significantly increased data transfer rate and image quality
that make LVDS (Low-Voltage Differential Signaling) very attractive to
industrial users. One is that LVDS drivers and receivers maintain
excellent signal levels and performance while operating on supply
voltages as low as 2 V. This low voltage allows LVDSs to operate
independently from the main power supply voltage. Another factor is
that LVDS drivers and receivers have a low swing voltage. This
voltage is typically around 345 mV. This allows LVDS devices to
achieve high speeds while using relatively little power. This low
differential swing voltage together with self-canceling EMI, reduces
EMI problems significantly. This is especially important in spacecritical applications. This is also why LVDS has already been widely
used in Notebook computer panel connections.
All Digital Benefits
No matter which digital standard an end user uses for their industrial
applications, it will have to provide the following criteria. Be compatible so that system and display products from different suppliers can
be made available in an open market. Become a standard for the
electronics and PC industry. Be able to transmit data over standard
twisted pair cables as well as fiber optic. Maintain a low bit error rate
for high quality image while operating at a very low power level. Be
scalable.
Expanded Applications
With flat panel displays already a common part of our everyday lives
at work, home and industrial/commercial settings, deciding on a
standard is a monumental decision that will affect all our lives.
Engineers will have to champion their cause by applying both of these
digital panel technologies to many practical products. Thus enabling
the end user, whether it be in an industrial setting or a consumer
setting, to benefit from both of these technologiesprocessor of choice.
38
SOM-DB4400 User's Manual
B.2 LVDS Pin assingments
Pin Name
LVDS signal
Channel
LCDDO0
Txout0-
first
LCDDO1
Txout0+
first
LCDDO2
Txout1-
first
LCDDO3
Txout1+
first
LCDDO4
Txout2-
first
LCDDO5
Txout2+
first
LCDDO6
Txclk-
first
LCDDO7
Txclk+
first
LCDDO8
not used
--
LCDDO9
not used
--
LCDDO10
not used
--
LCDDO11
not used
--
LCDDO12
not used
--
LCDDO13
not used
--
LCDDO14
not used
--
LCDDO15
not used
--
LCDDO16
not used
--
LCDDO17
not used
--
LCDDO18
not used
--
LCDDO19
not used
--
Appendix B LVDS
39
Connector X3 (VGA, LCD, Video, COM1, COM2, LPT/Floppy, Irda, Mouse, Keyboard)
40
Pin Number
Signal
Pin Number
Signal
1
GND
2
GND
3
R
4
B
5
HSY
6
G
7
VSY
8
DDCK
9
N .C .
10
DDDA
11
LCDDO16
12
LCDDO18
13
LCDDO17
14
LCDDO19
GND
15
GND
16
17
LCDDO13
18
LCDDO15
19
LCDDO12
20
LCDDO14
GND
21
GND
22
23
LCDDO8
24
LCDDO11
25
LCDDO9
26
LCDDO10
GND
27
GND
28
29
LCDDO4
30
LCDDO7
31
LCDDO5
32
LCDDO6
GND
33
GND
34
35
LCDDO1
36
LCDD03
37
LCDDO0
38
LCDDO2
39
VCC
40
VCC
41
LTGIO2
42
LTGIO0
43
LTGIO1
44
BLON#
45
BIASON
46
DIGON
47
COMP
48
Y
49
SYNC
50
C
51
LPT/FLPY#
52
N .C .
53
VCC
54
GND
55
/STB_DRV0
56
/AFD_DENSEL
57
FIR
58
PD7
59
IRRX
60
/ERR_HDSEL#
61
IRTX
62
PD6_MOT0
63
RXD2
64
/INIT_DIR#
65
GND
66
GND
67
RTS2#
68
PD5
69
DTR2#
70
/SLIN_STEP#
71
DCD2#
72
PD4_DSKCHG#
73
DSR2#
74
PD3_RDATA#
75
CTS2#
76
PD2_WP#
77
TXD2#
78
PD1_TRK0#
79
RI2#
80
PD0_INDEX#
81
VCC
82
VCC
83
RXD1
84
/ACK_DRV1
85
RTS1#
86
/BUSY_MOT1
87
DTR1#
88
PE_WDATA#
89
DCD1#
90
/SLCT_WGATE#
91
DSR1#
92
MSCLK
93
CTS1#
94
MSDAT
95
TXD1
96
KBCLK
97
RI1#
98
KBDAT
99
GND
100
GND
SOM-DB4400 User's Manual
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