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Hello My virtuoso version is IC188.8.131.52
I want to make the PLL simulation using the Cadence 6.1.3 tool PLL Macro
First I followed this:
To use a plugin, ADE needs to run in batch mode. This option can be set
.cdsinit file by using
envSetVal("spectre.envOpts" "controlMode" 'string "batch")
Then I was trying to extract the VCO macro model. I was following the
spectre user guide 7.0.1 instructions but I had problem with the step
8. Run the simulation with the VCO extraction plugin.
Using the plugin for VCO extraction, the command line is
spectre --plugin libpllPPVoscModel_sh.so
I wrote the mentioned command in the command line of Virtuoso but an
Error eval: undefined function - spectre
When I tried to run a PSS and PNOISE simulation there was an error in
the output log file:
Error found by spectre.
ERROR: Make sure PSS or PNOISE analysis has ppv parameter set
The Perturbation Projection Vector (PPV) is extracted in the VCO test
bench so during the extraction procedure. So I guess I need this plugin
to set ppv parameter.
When I tried again to load the plugin I got an error:
Error eval: unbound variable -plugin
Now the error was different probably because when I ran simulation the
netlist was generated.
Mayby this command should be written somewhere else. Maybe in some
cadence config file, just to let the program know that I want load
Could you give me some hints how can I solve this problem.
ok, I found the solution
I had to add parameter ppv eg. ppv=20 to PSS or PNOISE. It means the number of sample points per period.