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Using configuration utilities Quatech ExpressCard Parallel Port Adapter User’s Manual
Making external connections
The following figures and tables show the parallel port pinouts.
Figure 14 - DB-25 female parallel port connector
Table 1 - Parallel Port Pin Assignments
Pin #
Source Compatible Nibble Byte ECP EPP
1 H
nStrobe HostClk HostClk HostClk nWrite
2
Bi-Di*
Data 1 (Least Significant Bit) AD1
3
Bi-Di*
Data 2 AD2
4
Bi-Di* Data 3 AD3
5
Bi-Di* Data 4 AD4
6
Bi-Di* Data 5 AD5
7
Bi-Di* Data 6 AD6
8
Bi-Di* Data 7 AD7
9
Bi-Di* Data 8 (Most Significant Bit) AD8
10
P nAck PtrClk PtrClk PeriphClk Intr
11
P Busy PtrBusy PtrBusy PeriphAck nWait
12
P PError AckDataReq AckDataReq nAckReverse User defined 1
13
P Select Xflag Xflag Xflag User defined 3
14
H nAutoFd HostBusy HostBusy HostAck nDStrb
15
P nFault nDataAvail nDataAvail nPeriphRequest User defined 2
16
H nInit nInit nInit nReverseRequest nInit
17
H nSelectIn
IEEE 1284 Active
nAStrb
18
Signal Ground (nStrobe)
19
Signal Ground (Data 1 and Data 2)
20
Signal Ground (Data 3 and Data 4)
21
Signal Ground (Data 5 and Data 6)
22
Signal Ground (Data 7 and Data 8)
23
Signal Ground (Busy and nFault)
24
Signal Ground (PError, Select, and nAck)
25
Signal Ground (nAutoFd, nSelectIn, and nInit)
Page 12 Rev 1.00 (July 2007)