Pin Number
Function
16
none
17
RXC
18
none
19
none
20
DTR
21
none
22
none
23
none
24
TXC
25
none
1. N.C. means "No Connection."
I/O
Signal Description
none
N.C.
I
Receive Clock
none
N.C.
none
N.C.
O
Data Terminal Ready
none
N.C.
none
N.C.
none
N.C.
O
Transmit Clock
none
N.C.
Appendix A
Connector Pinouts
265