[SI-LIST] How to simulate worse case eye
- From: "Joel Brown" <joel@xxxxxxxxxx>
- To: <SI-LIST@xxxxxxxxxxxxx>
- Date: Fri, 6 Mar 2009 14:35:25 -0800
I was watching a webinar by Mentor on Hyperlynx and how they can quickly
generate a prbs pattern that results in a worse case eye diagram. They said
without this feature it could take days or even years of simulation to do
this.
I do most of my simulation in hspice since most of my models are based in
Hspice.
Is there a way to do what Mentor is claiming in Hspice by generating a
certain pattern?
I have been using the following code for a prbs sequence:
vin inr vcm LFSR(0.1 -0.1 1n 5ps 5ps
+ 'data_rate' 1 [7,4,1] rout=0)
vinn innr vcm LFSR(-0.1 0.1 1n 5ps 5ps
+ 'data_rate' 1 [7,4,1] rout=0)
Thanks - Joel
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