User's Manual

Specifications A-7
Parallel C Interface
The parallel C (IEEE 1284-II compliant) interface connector pin
assignments are shown in the table below.
Pin Direction Compatibility Nibble ECP
1 OUT Busy PtrBusy PeriphAck
2 OUT Select Xflag Xflag
3 OUT nAck PtrClk PeriphClk
4 OUT nFault nDataAvail nPriphRequest
5 OUT PError AckDataReq nAckReverse
6 IN/OUT DATA1 DATA1 DATA1
7 IN/OUT DATA2 DATA2 DATA2
8 IN/OUT DATA3 DATA3 DATA3
9 IN/OUT DATA4 DATA4 DATA4
10 IN/OUT DATA5 DATA5 DATA5
11 IN/OUT DATA6 DATA6 DATA6
12 IN/OUT DATA7 DATA7 DATA7
13 IN/OUT DATA8 DATA8 DATA8
14 IN nlnit ninit nReverseRequest
15 IN nStrobe HostClk HostClk
16 IN nSelectln IEEE1284
Active
IEEE1284
Active
17 IN nAutoFd HostBusy HostAck
18 IN Host Logic
High
Host Logic
High
Host Logic
High
19- 35 — GND GND GND
36 OUT Peripheral
Logic High
Peripheral
Logic High
Peripheral
Logic High