21
CDF Functions
The Component Description Format (CDF) describes the parameters and their attributes for individual components and libraries of components. The Virtuoso CDF tools let you create, edit, and delete CDF data of components.
The CDF SKILL functions let you create routines to perform operations on multiple components at once, automating your handling of CDF descriptions.
These functions are broadly classified in the following categories.
- Description creation functions: These functions operate on CDF descriptions and let you create base and user CDF descriptions for libraries and cells.
- Description querying functions: These function let you query existing CDF descriptions. To use the returned value, you must assign it to a variable that you create.
- Save functions: This function lets you save CDF descriptions. If a CDF description already exists, it is overwritten.
-
Dumping and editing functions: These functions let you save a CDF description to a file and edit it.
While editing dump files remember to escape invalid characters while specifyingtermOrderusing symbols. All symbols must be preceded by the backslash (\) to make them valid symbols in SKILL. - Deletion functions: These functions let you delete a CDF description or its parameters.
- Parameter management functions: These functions let you copy, find, and update CDF data and parameters.
- Scale factor functions: These functions let you specify scale factors or determine the current scale factors.
-
Edit CDF form invocation functions: These functions let you specify how the Edit CDF form opens. You can use
aedEditCDFto specify initial library, cell, and type values. - Miscellaneous functions: These functions are not classified in any of the previous categories.
- Remastering functions: These functions let you register or unregister triggers used for remastering.
Related Topics
Return to top