ZyXEL Elite 2864I User Guide - Page 249
Appendix C
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Appendix C ZyXEL PARALLEL PORT INTERFACE Signal pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Signal name -STROBE DATA 0 DATA 1 DATA 2 DATA 3 DATA 4 DATA 5 DATA 6 DATA 7 -ACKNLG BUSY PE SLCT -ATFD -ERROR -INIT -SLCT IN GND --GND GND GND --GND GND Description Direction Adapter - Printer Strobe pulse → Data signal: bit 0. ↔ Data signal: bit 1. ↔ Data signal: bit 2. ↔ Data signal: bit 3. ↔ Data signal: bit 4. ↔ Data signal: bit 5. ↔ Data signal: bit 6. ↔ Data signal: bit 7. ↔ Acknowledge signal; data has been received ← by the printer and the printer is ready to accept further data. Busy signal; printer is not ready to receive ← data. Paper end ← Printer is in the selected state; printer is on-line. ← Auto-feed; paper is auto-fed by one line after → every printed line. Printer is in error state. ← Resets printer to initial state. → Enables printer for data entry. → Ground Not connected Ground Ground Ground Not connected Ground Ground C-1