Printer-To-Computer Communication (Advanced Status) - Lexmark Printer User Manual

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

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 RS-232C Serial/Parallel 1284-C 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:
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
ACKNLG* width
Equal to Data Setup Time
ACKNLG* to BUSY Skew
STROBE* high time
Equal to Data Setup Time
•
Compatibility mode
•
Nibble mode
•
Byte mode
•
ECP mode
8-17
Interfaces
Minimum/Maximum
400 min.
0
0
0
0
50 min.
500 min.
400 min.
+/ - 20 max.
400 min.