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Ultrasim: individual accuracy setting on subcircuit level ?

baenischfau

Hi all,

 

I'm currently simulating a big mixed signal block, consisting of two big blocks. The instance block I0 is

pure digital logic, instance I1 is mainly analog but also includes some digital parts. I'm using Ultrasim

for verification but due to the analog parts I'm forced to use a quite strict accuracy setting to get the

results about right. However this setting is killing the digital part ...

 

I know that some other simulators offer the possibility to define accuracy levels for each instance in

a design, e.g. set I0 to Digital Fast and I1 to Analog. Is something like this possible with Ultrasim ?

 

Best Regards

 

Andi

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  • Jagdish23

    Hi Andrew, I am currently using AMS simulator with ultrasim solver. I have a question. If I mention sim_mode and speed for a sub-block which is digital block(verilog view) then will this digital block solved by analog(ultrasim) solver, or the simulator will just ignore the sim_mode and speed option specified for this block and block will be simulated by digital solver? And for a analog block I do not mention any of sim_mode or speed, then what is the default mode the simulator will consider?

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  • Jagdish23

    Hi Andrew, I am currently using AMS simulator with ultrasim solver. I have a question. If I mention sim_mode and speed for a sub-block which is digital block(verilog view) then will this digital block solved by analog(ultrasim) solver, or the simulator will just ignore the sim_mode and speed option specified for this block and block will be simulated by digital solver? And for a analog block I do not mention any of sim_mode or speed, then what is the default mode the simulator will consider?

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