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ELC not using spectre

Khenglish

ELC seems to always read in files as spice format even though I have "simulator lang = spectre" without the quotes at the top of every .scs file.  In addition I have:

set_var EC_SIM_NAME "spectre"
set_var EC_SIM_TYPE "spectre"

in my script every time before I do any database operation.

These are the types of warnings and errors I am getting (list is really 50x longer mostly referenceing ASSERT.  this is just the end of it):

 [WARNING(db_prepare)] spice syntax warning: ASSERT : no definition of the subckt
 => XVBD_CHECK ASSERT
[WARNING(db_prepare)] spice syntax warning: ASSERT : no definition of the subckt
 => XVBS_CHKFWD ASSERT
[WARNING(db_prepare)] spice syntax warning: ASSERT : no definition of the subckt
 => XVBD_CHKFWD ASSERT
[WARNING(db_prepare)] spice syntax warning: PINMOD : no definition of the subckt
 => XD A C SX PINMOD
[ERROR(db_prepare)] spice syntax error: DIODENWX : illegal port definition of macro
 => XAVD364_1 SUB VDD GND DIODENWX

Notice that is says spice every time instead of spectre.  Maybe this is just a program issue where it always says that spice is used even if it's not, but I have no idea.

So is spice really be used?  And if so then how do I make it use spectre?

  • Dear Khenglish,

    I am so happy when I saw your question ,because I also use the ELC  .I hope that we can contact more times when we are in trouble with the  ELC.

     I have never meet your error,but when you run db_prepare  ,it will load the setup.ss ,so I double that there may be some error in the setup.ss ,and don't forget edit it with the vi , and your subckt  may be not correct ,you can change  "XAVD364_1 SUB VDD GND DIODENWX " to  "XAVD364_1  (SUB VDD GND DIODENWX)   your_pmos_model " .

    I hope it helps 

    thaks,and when you are avaliable ,you can look the   http://www.cadence.com/Community/forums/p/30141/1336431.aspx#1336431 ,

    Liu

  • I fixed the one error.  It was because when fixing my file format for ELC I accidentally messed up the inputs to that diode.  It is not giving me an error that it cannot find the ASSERT subckt.  I'm pretty sure this is a spice vs spectre error since ASSERT is not a circuit, but a spectre command to verify proper output.

    Again if anyone knows why ELC is reading files as spice instead of spectre, I would like to know.

  • Try adding "simulator lang=spectre" in your netlist and see if it solves the problem.

  • Hi,

    I'm also using elc for library characterization.

    I've a spectre model file from scl which divides each model(diodes, transistors..) into different sections. When i run the script, i'm getting an error that says a subcircuit is already defined at db_prepare -force command; which is actually defined only once in the model file

    Have you faced any issue like this?

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