Stats

  • Locked Locked
  • Replies 4
  • Subscribers 93
  • Views 13910
  • Members are here 0
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Cadence ELC not recognising SPECTRE format

eklikeroomys

Halo, 

I am using ELC to characterise a new standard cell library. I am using a SPECTRE .scs model file, but it seems that ELC is not recognising this file format correctly, as it complains about library and section declarations which are present in the model file. I assume that my command and/or elccfg file is not set up correctly for using spectre. 

This is the contents of my command file:

db_open cell_digital
db_prepare -f
db_spice -s spectre -keep_log -keep_wave
db_output -lib cell_digital.lib -process typical -state
db_close
exit

And this is the contents of my elccfg file:

# Specify the environment variable settings.
EC_SIM_USE_LSF=1;
EC_SIM_LSF_CMD=" ";
EC_SIM_LSF_PARALLEL=10;
EC_SIM_TYPE="spectre";
EC_SIM_NAME="spectre";
EC_SPICE_SIMPLIFY=1;
EC_CHAR="ECSM-TIMING ECSM-POWER";


SUBCKT="cell_digital_SPICE_netlist.scs";
MODEL="model_file.scs";
SETUP="setup.ss";
PROCESS="typical";


Can somebody guide me into the right direction?

Thank you,

 

Parents
  • Hi,

    I have the same problem with eklikeroomys.

    I use a model file from TSMC, it defines multiple sections for different processes and corner. At each section, it defines many parameters which has unique values to that process and/or corner, then it include the mos model which uses these parameter to describe its characters.

    The ELC could direct into the right section and include the mos model well, but it seems it does not recognize the parameter definition. It reports errors when I do "db_spice". Reported errors like:
    Error found by spectre during hierarchy flattening.
        ERROR (SFE-1999):
            "/home/abc/works/elc/foo.ipdb/NCH.device/simulate/model" 4: Model
            `nch.1': parameter `wmin': Unknown parameter name `dxw' found in
            expression.
    Can you help with this? Thanks in advance!
Reply
  • Hi,

    I have the same problem with eklikeroomys.

    I use a model file from TSMC, it defines multiple sections for different processes and corner. At each section, it defines many parameters which has unique values to that process and/or corner, then it include the mos model which uses these parameter to describe its characters.

    The ELC could direct into the right section and include the mos model well, but it seems it does not recognize the parameter definition. It reports errors when I do "db_spice". Reported errors like:
    Error found by spectre during hierarchy flattening.
        ERROR (SFE-1999):
            "/home/abc/works/elc/foo.ipdb/NCH.device/simulate/model" 4: Model
            `nch.1': parameter `wmin': Unknown parameter name `dxw' found in
            expression.
    Can you help with this? Thanks in advance!
Children
No Data

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.