SUBRESGEN

NAME
SYNOPSIS
OPTIONS
DESCRIPTION
EXAMPLES
AUTHOR
FILES

NAME

subresgen - tool to generate technology data for substrate resistance extraction using the interpolation method

SYNOPSIS

subresgen [-cn] subresmkdir dirname min_term_size

OPTIONS

-c

Only generate a file "dospace" that contains the commands to run space3d on the terminal configurations.

DESCRIPTION

The tool subresgen applies space3d with the boundary-element method for substrate resistance extraction to compute substrate resistances for some standard substrate terminal configurations. These substrate resistances are then used to generate "selfsubres" and "coupsubres" entries in a space element definition file that can be used with space3d to extract substrate substrate resistances using the fast interpolation method. The command subresmkdir creates a working directory for subresgen. The application is described in more detail below. STEP 1. Create an element definition file called "space.def.s" for space3d that contains at least an entry "sublayers" that describes the profile of the substrate that you consider (see the "Space Substrate Resistance Extraction User's Manual"). It is important for subresgen that the keyword "sublayers" starts at the beginning of a line, and that the body of the sublayers entry does not contain empty lines. Further, the body should be followed by an empty line. The same should hold for possible entries "selfsubres" and "coupsubres" that are contained by the file. But note that these entries will be overwritten by subresgen. STEP 2. Run subresmkdir to create a working directory for subresgen. As a first argument you need to specify the name of the working directory. As a second argument you need to specify (in nm) the minimum size of a substrate terminal. Move the file "space.def.s" to the working directory that you created with subresmkdir. STEP 3. Run subresgen in the working directory that you created with subresmkdir. You will see that messages appear about the space3d runs that are performed to compute the substrate resistances. At the end, the element definition file "space.def.s" will be modified to contain the "selfsubres" and "coupsubres" entries.

EXAMPLES

$ vi space.def.s $ subresmkdir bicmos 180 $ cd bicmos $ mv ../space.def.s . $ subresgen

AUTHOR

Arjan van Genderen Copyright (C) 2003, Delft University of Technology, The Space Team. All rights reserved.

FILES

dirname/.min_term_size

minimum substrate terminal size

dirname/project

project directory with terminal configurations

dirname/process

process directory for space3d runs

dirname/space.def.s

input and output element definition file