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C-4
Pin In/out Description
19 — Ground return
20 — Ground return
21 — Ground return
22 — Ground return
23 — Ground return
24 — Ground return
25 — Ground return
26 — Ground return
27 — Ground return
28 — Ground return
29 — Ground return
30 — Ground return
31 In Ignored [nInit]
32 Out Error*, returns error status if FRPO O2=2 [nFault]
33 — Not connected
34 — Not connected
35 Out Power Ready
36 In Select In [NSelectIn]
[ ]: Signal names in the Auto mode (IEEE 1284). In the Auto mode, these signals are bi-directional.
Detailed descriptions of the signals follow.
Strobe* [nStrobe] (Pin 1)
A negative-going Strobe* pulse causes the printer to read and latch the data on the Data 0 [1] to
Data 7 [8] signal lines.
C.1. Parallel Interface