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About noise-aware PLL design flow

sriram123

I started the noise aware PLL design flow using cadence 5.141ISR and MMSIM7.1 spectre. When I run PSS on my PFD/CP bench, it gives me an error saying

FATAL(CMI-2010): Assertion failed in file 'check.c' at line 499.

FATAL(SPECTRE-21):Assertion failed.

Please help me identify the problem.

 

Thanks

Sriram Muralidharan

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  • markushschulz

    Hi Tawna,

    I have the same problems like Sriram. I tried to set up a PFD/CP simulation with the 'Noise Aware PLL Flow'. I inserted my own PFD/CP circuit into the testbench and set up a PSS and PNOISE simulation. For the oscillation sources I just set up a rectangular signal with a frequency of 25 MHz.

    I dont know where the error comes from. Can you or someone else help me?

    Thanx in advance

    Markus

Reply
  • markushschulz

    Hi Tawna,

    I have the same problems like Sriram. I tried to set up a PFD/CP simulation with the 'Noise Aware PLL Flow'. I inserted my own PFD/CP circuit into the testbench and set up a PSS and PNOISE simulation. For the oscillation sources I just set up a rectangular signal with a frequency of 25 MHz.

    I dont know where the error comes from. Can you or someone else help me?

    Thanx in advance

    Markus

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