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eye diagram simulation

hii all,
i need to know how to perform eye diagram simulation in spectre and how to generate random i/p data ?
thanx in advance.

Originally posted in cdnusers.org by akki

archive over 17 years ago

Just run a transient simulation and then use the eyeDiagram function in the calculator to plot the eye diagram. Or with wavescsan/viva you can double-click on the x-axis and setup the eye diagram that way.

There are various random sources in ahdlLib - e.g. rand_bit_stream

Regards,

Andrew.

Originally posted in cdnusers.org by adbeckett
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archive over 17 years ago

THANKS A LOT !!!! that would certainly be helpful.

Originally posted in cdnusers.org by akki
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archive over 17 years ago

hi andrew,

i've tried generating prbs data with rand_bit_stream as you said, but getting one problem.
When i am increasing my simulation time the output from it is not achieving full voltage swing and not a square pulse anymore,but a triangular wave type..

could you suggest some solution please.
i would be grateful.

Originally posted in cdnusers.org by akki
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