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Generating a bit stream in Virtuoso

oAwad

Hello all,

I want to test a digital chip on Cadence Spectre using its extracted SPICE netlist from Calibre PEX. The chip has a bit stream of 128 bits as input and its outputs are:  a digital bit stream of 128 bits and an analog signal. So what is the best way to generate the input bit stream ?

I found a way using vbit source and loading a bit stream to it using a txt file, but is there a better way ?

  • Andrew Beckett

    By "128 bits" do you mean it's 128 bits wide? 

    If so, you are probably going to be better creating a vector file - this is available via the Setup->Simulation Files form in ADE and is documented in a chapter in the Ultrasim User Guide (on "Digital Vector File Format").

    See this recent thread on vector files (just FYI - it gives some examples, at least).

    Regards,

    Andrew.

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