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Chapter 2
Serial Port
The mainboard offers one 9-pin male DIN connectors as serial port.
The port is 16550A high speed communication port that send/receive 16
bytes FIFOs. You can attach a serial mouse or other serial devices di-
rectly to the connector.
1 2 3 4 5
6 7 8 9
9-Pin Male DIN Connector
Serial Port Pin Definition
PIN
SIGNAL
1
DCD
2
SIN
3
SOUT
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
RI
2-12
DESCRIPTION
Data Carry Detect
Serial In or Receive Data
Serial Out or Transmit Data
Data Terminal Ready
Ground
Data Set Ready
Request T o Send
Clear To Send
Ring Indicate
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