Chapter 3, Board layout – Lanner LEC-3012 User Manual
Page 18

18
Board Layout
Chapter 3
Embedded and Industrial Computing
Connectors on LEK-AU8 only
RS-232/422/485 Serial Port(COM5~COM8, CN2):
P I N
NO.
1
2
3
4
5
6
7
8
9
10
RS-232
SIN SOUT GND
SIN SOUT GND
RS-422
TX+
TX-
RX-
RX+ GND TX+
TX-
RX-
RX+ GND
RS-485
TX+
TX-
RX-
RX+ GND TX+
TX-
RX-
RX+ GND
RS-485
D+
D-
GND
D+
D-
GND
P I N
NO.
11
12
13
14
15
16
17
18
19
20
RS-232
SIN SOUT GND
SIN SOUT GND
RS-422
TX+
TX-
RX-
RX+ GND TX+
TX-
RX-
RX+ GND
RS-485
TX+
TX-
RX-
RX+ GND TX+
TX-
RX-
RX+ GND
RS-485
D+
D-
GND
D+
D-
GND
LAN3/LAN4: The LAN ports are provided by Intel 82583V
Ethernet controller whose interface complies with PCI-e
1.1 (2.5 Ghz).
Pin No.
Description
Fast Ethernet Gigabit Ethernet
1
TX+
MD0+
2
TX-
MD0-
3
RX+
MD1+
4
T45
MD2+
5
T45
MD2-
6
RX-
MD1-
7
T78
MD3+
8
T78
MD3-
Connectors on LEK-AU6 only
RS-232/422/485 Serial Port(COM5~COM6, CN2):
P I N
NO.
1
2
3
4
5
6
7
8
9
10
RS-232
SIN SOUT GND
SIN SOUT GND
RS-422
TX+
TX-
RX-
RX+ GND TX+
TX-
RX-
RX+ GND
RS-485
TX+
TX-
RX-
RX+ GND TX+
TX-
RX-
RX+ GND
RS-485
D+
D-
GND
D+
D-
GND
Note: The default protocol is in RS-232. To switch
between RS-232, 422 and 485, use the BIOS menu
as shown above.
COM6
1 2 3 4 5
6 7 8 9 10
COM5
1 2 3 4 5 6 7 8 9 10
COM5 COM7
11 12 13 14 15 16 17 18 19 20
COM6 COM8