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B-4
B-4 | Specifications
Parallel Interface
The parallel (IEEE 1284-I compliant) interface connector pin assignments
are shown in the table below. The column heading “Direction” refers to the
direction of signal flow as viewed from the printer.
Pin No. Direction
IEEE 1284-B connector
Compatibility Nibble ECP
1 IN nStrobe HostClk
2 IN/OUT DATA1
3 IN/OUT DATA2
4 IN/OUT DATA3
5 IN/OUT DATA4
6 IN/OUT DATA5
7 IN/OUT DATA6
8 IN/OUT DATA7
9 IN/OUT DATA8
10 OUT nACK PtrClk PeriphClk
11 OUT Busy PrtBusy PeriphAck
12 OUT PError AckDataReq nAckReverse
13 OUT Select Xflag
14 IN nAutoFd HostBusy HostAck
15 NC
16 GND
17 CG
18 PeripheralLogic High
19 - 30 GND
31 IN nlnit nReverse
Request
32 OUT nFault nDataAvail nPeriphRequest
33 GND
34 NC
35 +5V
36 IN nSelectln IEEE1284 Active