Appendix A. Connector Pin Assignments
Serial Port Connector
1
5
6
9
Figure 5. Serial Port Connector
Note: The external interface for the serial port is a male, 9-pin D-shell connector.
Parallel Port Connector
13
1
25
14
Figure 6. Parallel Port Connector
Note: The external interface for the parallel port is a female, 25-pin D-shell connector.
Table 42. 9-Pin Assignments for the Serial Port Connector
Pin
Signal Name
I/O
Pin
Signal Name
I/O
1
Data carrier detect
I
2
Receive data#
I
3
Transmit data#
O
4
Data terminal read
O
5
Ground
NA
6
Data set ready
I
7
Request to send
O
8
Clear to send
I
9
Ring indicator
I
Table 43. 25-Pin Assignments for the Parallel Port Connector
Pin
Signal Name
I/O
Pin
Signal Name
I/O
1
STROBE#
I/O
2
D0
I/O
3
D1
I/O
4
D2
I/O
5
D3
I/O
6
D4
I/O
7
D5
I/O
8
D6
I/O
9
D7
I/O
10
ACK#
I
11
BUSY
I
12
PE
I
13
SLCT
I
14
AUTO FD XT#
O
15
ERROR#
I
16
INIT#
O
17
SLCT IN#
O
18
Ground
NA
19
Ground
NA
20
Ground
NA
21
Ground
NA
22
Ground
NA
23
Ground
NA
24
Ground
NA
25
Ground
NA
Appendix A. Connector Pin Assignments
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