MANO321 Mini ITX Motherboard
12
Board and Pin Assignments
2.4.1
COM1 D-Sub Connector (CN1)
This connector is a standard D-Sub connector for COM1 serial port interface which is
selectable for RS-232/422/485 mode by BIOS setting (see section 4.4). The pin
assignments of RS-232/422/485 are listed in table below.
Note
[*]
: Pin 1 of COM1 can be DCD/+5V and pin 9 of COM1 can be RI/+12V by
selecting JP1 (see section 3.3.1).
2.4.2
COM2~COM6 Headers (CN2~CN6)
The motherboard comes with four 2x5-pin (pitch=2.00mm) headers for COM2~COM6
serial port interfaces. It has power capability on DCD# and RI# pins by setting jumper
JP2~JP6.
COM2~COM6:
Note
[*]
: COM 2 is RS232/422/485, COM3 ~ COM6 only support RS232.
[**]
: Pin 1 of COM2&6 can be DCD/+5V and pin 8 of COM2&6 can be RI/+12V
by selecting JP2~JP6 (see section 3.3.2).
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
GND
GND
6
DSR#
N/C
N/C
7
RTS#
N/C
N/C
8
CTS#
N/C
N/C
9
RI#
N/C
N/C
Pin
Signal
Pin
Signal
1
DCD
2
DSR
3
RX
4
RTS
5
TX
6
CTS
7
DTR
8
RI
9
GND
10
NC
Summary of Contents for MANO321 Series
Page 1: ...MANO321 Series Intel Celeron Processor J6412 Mini ITX Motherboard User s Manual ...
Page 6: ...vi This page is intentionally left blank ...
Page 10: ...MANO321 Mini ITX Motherboard 4 Introduction 1 4 Block Diagram ...
Page 12: ...MANO321 Mini ITX Motherboard 6 Board and Pin Assignments Bottom View ...
