User`s manual

NANO830/831 Intel
®
Atom
TM
D2550/N2600 Processor Nano-ITX Board
Board and Pin Assignments 15
2.4.3 COM1 Connector (CN3)
The CN3 is a 2x5-pin box header. This COM1 port has +5V level power capability on
DCD and +12V level on RI by setting JP6 (see section 2.3.4). The pin assignments of
RS-232/RS-422/RS-485 are listed in table below. If you need COM1 port to support
RS-422 or RS-485, please refer to section 2.3.2.
2.4.4 LVDS Connector (CN4)
This board has a 40-pin connector for LVDS LCD interface. It is strongly recommended
to use the matching JST SHDR-40VS-B 40-pin connector for LVDS interface. Pin 1~6
VCCM can be set to +3.3V level or +5V level by setting JP1 (see section 2.3.1).
18-bit single channel
Pin RS-232 RS-422 RS-485
1 DCD TX- Data-
2 DSR No use No use
3 RXD TX+ Data+
4 RTS No use No use
5 TXD RX+ No use
6 CTS No use No use
7 DTR RX- No use
8 RI No use No use
9 GND No use No use
10 No use No use No use
Pin Signal Pin Signal
1 VCCM 2 VCCM
3 VCCM 4 VCCM
5 VCCM 6 VCCM
7 N.C. 8 N.C.
9 GND 10 GND
11 N.C. 12 N.C.
13 N.C. 14 N.C.
15 GND 16 GND
17 N.C. 18 N.C.
19 N.C. 20 N.C.
21 GND 22 GND
23 Channel A D0- 24 N.C.
25 Channel A D0+ 26 N.C.
27 GND 28 GND
29 Channel A D1- 30 N.C.
31 Channel A D1+ 32 N.C.
33 GND 34 GND
35 Channel A D2- 36 Channel A CLK-
37 Channel A D2+ 38 Channel A CLK+
39 GND 40 GND