EP100 AMD Embedded G-Series Processor EPIC Board with LVDS
Board and Pin Assignments
23
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
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
