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PC 817
2
User
’
s Manual
25
2.5
Serial
Port
Interface
The PC 8172 has four onboard serial ports, COM1, COM2, COM3,
COM4 are RS-232 Port Connector.
The connector, COM1, COM2, COM3 are DB-9 connector, and the
following table shows the pin assignments of this connector.
Pin Signal Pin Signal
1
Hardware Installation
DCD, Data
Carrier Detect
6 DSR, Data Set Ready
2
RXD, Receive
7
RTS, Request To
Data
Send
3
TXD, Transmit
8 CTS, Clear To Send
Data
DTR, Data RI/+5V/+12V Ring
4 9
Terminal Ready
Indicator
GND, Ground
5
2.6
DVI-I
The PC 8172 has a DVI-I interface connector. It is able to
connect to an expansion CRT monitor, and the system can display on
both the flat panel and the CRT simultaneously.
Pin Signal Pin Signal
1
TX2-
2
TX2+
3
Ground
4
CRT_SPD_CLK
5 6
CRT_SPD DATA DVI_SPD_CLK
7 8
DVI_SPD DATA CRT-VSYNC
9 10
TX1- TX1+
11 12
Ground NC
13 14
NC VGAVCC
15 16
Ground FPDETECT
17 18
TX0- TX0+
19 20
Ground NC