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Design Languages >> Verilog-AMS >> instantiating a module for several times
https://designers-guide.org/forum/YaBB.pl?num=1305879822

Message started by navids on May 20^th, 2011, 1:23am

Title: instantiating a module for several times
Post by navids on May 20^th, 2011, 1:23am

Dear all,
I have encountered a problem. I want to use a block for 40 times in my verilog-A code. I have written a module for it, but in the main module I can't instantiate it in a "for/generate" loop.
The problem is that the "for/generate" loops should be in the analog block while the instantiating should be outside of the analog block. At least this is the issue that I found. Does anybody have any solution for that?
Kind regards,
Navids

Title: Re: instantiating a module for several times
Post by boe on May 27^th, 2011, 10:25am

Navids,

See post http://www.designers-guide.org/Forum/YaBB.pl?num=1291392799#6 and its follow-ups.
B O E

Title: Re: instantiating a module for several times
Post by navids on May 30^th, 2011, 12:27am

Hi B O E,

Thank you for your suggestion. I had already done that. But I encounter another problem.
In my overall system, I have 8 stages that in each of them I should use 155 times of my child module. If I write the code of the child module directly in the main module with for/generate loops, it works for one stage. but when I tried with three stages, there was this error:

Internal error found in spectre during SpectreHDL complie, during generation of Artist DPLs. Please run 'getSpectreFiles' or send the netlist, the spectre log file, the behavioral model files, and any other information that can help identify the problem to support@cadence.com.
assertion failed.

I should mention that the child module is not complicated. It two inputs/outputs and according to the control line the inputs are connected to the outputs in parallel/crossed.

Navids

Title: Re: instantiating a module for several times
Post by boe on May 30^th, 2011, 12:50am

Navids,

It seems your example exceeds some internal limit of Spectre. I suggest you contact Cadence about that internal error.

B O E