Busy /Ack Time
|1||Get next byte of data
T=0.5us Release /Strobe, Assert Data
|2||T=0.5us, Assert /Strobe, Assert Data||2||1||2c||6||5||3d||3|
|3||T=0.5us, Release /Strobe, Assert Data||5||3||4||3||4||3e||4f|
|4||T=10s, Release /Strobe and Data||5i||4h||1||5||4g||6|
|5||T=5ms, Release /Strobe and Data||5j||6||1k||5||5||4|
b: bAT - We have been waiting .5us, now its time to:
d: BAt - We have a Busy from the printer in response to our /Strobe. Do we need to wait anyway? If so make this a 2 and move to 3 when BAT.
f: BAT - Data was kept up for .5us, now we can:
i: bat - The printer is asserting /Ack
k: bAt - The /Ack is over, we can repeate the process.
|file: /Techref/io/parallel/states.htm, 6KB, , updated: 2008/3/18 10:57, local time: 2021/10/25 22:18,
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<A HREF="http://www.piclist.com/techref/io/parallel/states.htm"> io parallel states</A>
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