ZyXEL Communications 2864 - Manual (Page 249)

C–1
Appendix C
ZyXEL PARALLEL PORT INTERFACE
Signal
pin Signal name Description Direction
Adapter - Printer
1 -STROBE Strobe pulse
→
2 DATA 0 Data signal: bit 0.
↔
3 DATA 1 Data signal: bit 1.
↔
4 DATA 2 Data signal: bit 2.
↔
5 DATA 3 Data signal: bit 3.
↔
6 DATA 4 Data signal: bit 4.
↔
7 DATA 5 Data signal: bit 5.
↔
8 DATA 6 Data signal: bit 6.
↔
9 DATA 7 Data signal: bit 7.
↔
10 -ACKNLG Acknowledge signal; data has been received
by the printer and the printer is ready to accept
further data.
←
11 BUSY Busy signal; printer is not ready to receive
data.
←
12 PE Paper end
←
13 SLCT Printer is in the selected state; printer is on-line.
←
14 -ATFD Auto-feed; paper is auto-fed by one line after
every printed line.
→
15 -ERROR Printer is in error state.
←
16 -INIT Resets printer to initial state.
→
17 -SLCT IN Enables printer for data entry.
→
18 GND Ground
19 --- Not connected
20 GND Ground
21 GND Ground
22 GND Ground
23 --- Not connected
24 GND Ground
25 GND Ground