Lexmark MX826 Printer Languages and Interfaces Technical Reference - Page 137

Printer-to-computer communication (Advanced Status

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Printer interfaces 137 The following illustration shows the typical timing sequence. DATA 1-8 STROBE* ACK* BUSY The following table shows all protocol timings in nanoseconds. Time Name T1 Data setup to STROBE* low T2 STROBE* low to ACKNLG* low T3 ACKNLG* low to STROBE* high T4 STROBE* high to ACKNLG* high T5 ACKNLG* high and BUSY low to STROBE* low T6 ACKNLG* low to change data T7 STROBE* Timeout Max based on Auto Strobe Timer T8 ACKNLG* width Equal to Data Setup Time T9 ACKNLG* to BUSY Skew T10 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 supports the following mode: • Compatibility mode • Nibble mode • Byte mode • ECP mode

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The following illustration shows the typical timing sequence.
DATA 1-8
STROBE*
ACK*
BUSY
The following table shows all protocol timings in nanoseconds.
Time
Name
Minimum/Maximum
T1
Data setup to STROBE* low
400 min.
T2
STROBE* low to ACKNLG* low
0
T3
ACKNLG* low to STROBE* high
0
T4
STROBE* high to ACKNLG* high
0
T5
ACKNLG* high and BUSY low to STROBE* low
0
T6
ACKNLG* low to change data
50 min.
T7
STROBE* Timeout
Max based on Auto Strobe Timer
500 min.
T8
ACKNLG* width
Equal to Data Setup Time
400 min.
T9
ACKNLG* to BUSY Skew
+/ - 20 max.
T10
STROBE* high time
Equal to Data Setup Time
400 min.
Printer
‑
to
‑
computer communication (Advanced Status)
The printer supports the following mode:
•
Compatibility mode
•
Nibble mode
•
Byte mode
•
ECP mode
Printer interfaces
137