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.
Please help me identify the problem.
On possible reason (although I saw this on older versions...not 7.1):
Check your vsource statements. Do they all have a dc value set? If they do not, you will see this error.If you put a dc value on the vsource, the error will go away.
Check your vsource statements. Do they all have a dc value set?
If they do not, you will see this error.
If you put a dc value on the vsource, the error will go away.
I recommend upgrading to MMSIM 7.2 (latest ISR), as this issue may go away with a newer version of spectre. Otherwise, please contact Cadence Customer Support.
Sr. Staff Support AE, Global Customer Support
Cadence Design Systems, Inc.
In reply to 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