IBM 865951Y - Netfinity 5000 - 51Y, Hardware Maintenance Manual

Page: 139 / 220

Parallel port connector
Parallel ports are used to communicate with printers and
other devices, such as some CD-ROM and tape drives.
The server provides one 25-pin, D-shell connector on the
back of the server.
13 1
25 14
This parallel port connector conforms to the Institute of
Electrical and Electronics Engineers (IEEE) Standard 1284.
There are three standard modes of operation:
Ÿ
Standard Parallel Port (SPP)
Ÿ
Enhanced Parallel Port (EPP)
Ÿ
Extended Capability Port (ECP)
Table 6 shows the pin-number assignments for the parallel
port connector. The signal names for all three modes are
shown. SPP and ECP signal names are the same; EPP
signal names that are different are shown in parentheses.
Table 6. Parallel Port Connector Pin-Number
Assignments
Pin Signal Pin Signal
1 -STROBE (-WRITE) 14 -AUTO FD (-DSTRB)
2 Data 0 15 -ERROR
3 Data 1 16 -INIT
4 Data 2 17 -SLCT IN (-ASTRB)
5 Data 3 18 Ground
6 Data 4 19 Ground
7 Data 5 20 Ground
8 Data 6 21 Ground
9 Data 7 22 Ground
10 -ACK 23 Ground
11 BUSY (-WAIT) 24 Ground
12 PE 25 Ground
13 SLCT
Netfinity 5000 - Type 8659
131