Lexmark T614n Technical Reference - Page 321
Printer-to-Computer Communication (Advanced Status..., Table 8-3: Fastbytes Timing Sequence
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8-18 Interfaces Table 8-3 shows all protocol timings in nanoseconds Table 8-3: Fastbytes Timing Sequence Time T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 Name Data setup to STROBE* low STROBE* low to ACKNLG* low ACKNLG* low to STROBE* high STROBE* high to ACKNLG* high ACKNLG* high and BUSY low to STROBE* low ACKNLG* low to change data STROBE* Timeout Max based on Auto Strobe Timer in PS/2 ACKNLG* width Equal to Data Setup Time ACKNLG* to BUSY Skew STROBE* high time Equal to Data Setup Time Minimum/Maximum 400 min. 0 0 0 0 50 min. 500 min. 400 min. +/ - 20 max. 400 min. Printer-to-Computer Communication (Advanced Status) The printer has a standard IEEE 1284-B compliant connector and is an IEEE 1284-I compliant device. The optional parallel interface card has an IEEE 1284-C compliant connector and is an IEEE 1284-I compliant device. Your printer could be considered an IEEE 1284-II compliant device if the "C" to "B" style connector converter were used. The printer exceeds the maximum allowable circuit capacitance for Level II interfaces. Compliance with IEEE 1284-II may slow data flow control time slightly; however, all minimum and maximum criteria set forth in IEEE 1284 documentation will be met. The printer supports: • Compatibility mode • Nibble mode • Byte mode • ECP mode