DIY 7i90 and EPP

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21 Nov 2023 02:03 #286137 by cornholio
DIY 7i90 and EPP was created by cornholio
Thinking of this route, for the signals from the LPT port should I run them through a FET bus switch ? Any suggestion in the way of termination and such ?

Cheers
Rob

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21 Nov 2023 14:31 #286176 by PCW
Replied by PCW on topic DIY 7i90 and EPP
The 7I90 uses bus switches so the interface is 5V tolerant
but it may be that most existing parallel ports use 3.3V signaling
levels. A little poking around with a voltmeter would be useful.

Termination (impedance matching) is not needed as the transaction
rate is quite low and the parallel port is not capable of driving parallel
termination.
The following user(s) said Thank You: cornholio

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21 Nov 2023 17:07 #286183 by cornholio
Replied by cornholio on topic DIY 7i90 and EPP
Once again thanks kind sir

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