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Chapter 2: Hardware
2.13.1 Connector Pin Assignment
2.13.1.1 Serial Connector (COM1, COM2)
CN1
Pin
Signal
Description
CN1-1
DCD
Data Carrier Detect
–
Input
CN1-2
RXD
Receive Data
–
Input
CN1-3
TXD
Transmit Data
–
Output
CN1-4
DTR
Data Terminal Ready
–
Output
CN1-5
GND
Signal / Power Ground
CN1-6
DSR
Data Set Ready
–
Input
CN1-7
RTS
Request to send
–
Output
CN1-8
CTS
Clear to send
–
Input
CN1-9
5V
Power
CN2
Pin
Signal
Description
CN2-1
DCD
Data Carrier Detect
–
Input
CN2-2
RXD
Receive Data
–
Input
CN2-3
TXD
Transmit Data
–
Output
CN2-4
DTR
Data Terminal Ready
–
Output
CN2-5
GND
Signal / Power Ground
CN2-6
DSR
Data Set Ready
–
Input
CN2-7
RTS
Request to send
–
Output
CN2-8
CTS
Clear to send
–
Input
CN2-9
5V
Power
