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Eye diagram

nevinalex1234

 hi

I have been trying to plot eye diagrams in cadence. The command eyediagram(signal,start,stop,period) is the format. But i am not able to control the no of eyes in my diagram. Say i run my simulation from 0 to 10u and my input clk is 5Ghz, typically to get a SINGLE EYE, i should give 200p as period rite ? I have added a 25p, 25p rise time fall time for it. But the thing seems going crazy.

Any ideas whats bugging ?

Parents

  •  Hi

    Just to add on. 

    Can i run simulate the prbs.scs file in ADE environment? I created the verilog a model and and tried to run prbs.scs in spectre ADE (added it to Setup---> SImulation Files--> Stimulus Files). But i get the following error.

    p, li { white-space: pre-wrap; }

    End netlisting Sep 11 11:29:32 2012

    ERROR (OSSHNL-514): Netlisting failed due to errors reported before. Netlist may be corrupt or may not be produced at all. Fix reported errors and netlist again.

    ...unsuccessful.

    But i have sucessfuly compted the simulation while running from terminal "spectre prbs.scs"

    Basically i wanted to plot the jitter waveform in ADE Waveform window.

Reply

  •  Hi

    Just to add on. 

    Can i run simulate the prbs.scs file in ADE environment? I created the verilog a model and and tried to run prbs.scs in spectre ADE (added it to Setup---> SImulation Files--> Stimulus Files). But i get the following error.

    p, li { white-space: pre-wrap; }

    End netlisting Sep 11 11:29:32 2012

    ERROR (OSSHNL-514): Netlisting failed due to errors reported before. Netlist may be corrupt or may not be produced at all. Fix reported errors and netlist again.

    ...unsuccessful.

    But i have sucessfuly compted the simulation while running from terminal "spectre prbs.scs"

    Basically i wanted to plot the jitter waveform in ADE Waveform window.

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