B
4
P
ORT
P
INOUTS
The following table lists the pinouts of the DP-301's 25-pin parallel port
connector (identical to the parallel port connector used on most personal
computers), and the corresponding pin numbers for the 36-pin Centronics
connector as used on most printers.
Signal names beginning with n are active-low signals.
25-pin
Centronics
Signal
Source
1
1
nStrobe
Host
2
2
Data 1
Bidirectional
3
3
Data 2
Bidirectional
4
4
Data 3
Bidirectional
5
5
Data 4
Bidirectional
6
6
Data 5
Bidirectional
7
7
Data 6
Bidirectional
8
8
Data 7
Bidirectional
9
9
Data 8
Bidirectional
10
10
nAck
Printer
11
11
Busy
Printer
12
12
PError
Printer
13
13
Select
Printer
14
14
nAutoFd
Host
15
32
nFault
Printer
16
31
nInit
Host
17
36
nSelectIn
Host
18-25
16, 17,
19-30
Ground
