Table of Contents
Advertisement
Serial Port Connectors: COM 2 (optional) & COM A
The mainboard offers two 9-pin DIN connectors as serial ports COM A
and COM 2. The ports are 16550A high speed communication ports that send/
receive 16 bytes FIFOs. You can attach a serial mouse or other serial devices
directly to them.
1 3 5 7
2 4 6 8 9
COM 2
(optional)
COM 2 Pin Definition
PIN
SIGNAL
1
NDCDB
2
NDSRB
3
NSINB
4
NRTSB
5
NSOUT
6
NCTSB
7
NDTRB
8
NRIB
9
GND
COM A Pin Definition
PIN
SIGNAL
1
DCD
2
SIN
3
SOUT
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
1 2 3 4 5
6 7 8 9
COM A
DESCRIPTION
Data carry detect
Data set ready
Serial or receive data
Request to send
Serial out or transmit data
Clear to send
Data terminal ready
Ring Indicate
Ground
DESCRIPTION
Data Carry Detect
Serial In or Receive Data
Serial Out or Transmit Data
Data Terminal Ready
Ground
Data Set Ready
Request To Send
Clear To Send
2-9
Hardware Setup
Advertisement
Table of Contents
