Airlink APSUSB2 Manual - Page 13

Port Pinouts

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B 4 PORT PINOUTS This appendix shows the pinouts of the Print Server parallel port connector. Parallel Ports The following table lists the pinouts of the print server's 25-pin parallel port connector (identical to the connector used on most personal computers), as well as the 36-pin Centronics connector used on most printers. Signal names beginning with n are active-low signals. 25-pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18-25 Centronics 1 2 3 4 5 6 7 8 9 10 11 12 13 14 32 31 36 16, 17, 19-30 Signal nStrobe Data 1 Data 2 Data 3 Data 4 Data 5 Data 6 Data 7 Data 8 nAck Busy PError Select nAutoFd nFault nInit nSelectIn Ground Source Host Bi-directional Bi-directional Bi-directional Bi-directional Bi-directional Bi-directional Bi-directional Bi-directional Printer Printer Printer Printer Host Printer Host Host

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B
4
P
ORT
P
INOUTS
This appendix shows the pinouts of the Print Server parallel port connector.
Parallel Ports
The following table lists the pinouts of the print server’s 25-pin parallel port connector (identical to
the connector used on most personal computers), as well as the 36-pin Centronics connector 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
Bi-directional
3
3
Data 2
Bi-directional
4
4
Data 3
Bi-directional
5
5
Data 4
Bi-directional
6
6
Data 5
Bi-directional
7
7
Data 6
Bi-directional
8
8
Data 7
Bi-directional
9
9
Data 8
Bi-directional
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