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Altera_Forum's avatar
Altera_Forum
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15 years ago

Is is gonna be very long propagation time for multi-bits mux?

I did a mux that take a 18-bit input and a 19-bit input and a 18 bit-output. It seems that from the simulation, it takes really long time to make the change to the output everytime one of the ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Most substantial information is missing for a serious answer.

Do you show pin-to-pin delays? They have nothing to do with internal delays that count for maximum clock frequency. What's the involved device family? how to mux 19 bit to 18 bit, is it more than a simple multiplexer (a single LE per bit)?