Abstract Generation Use Model

Abstract Generator generates LEF abstracts for cells in cell libraries. A cell library typically consists of standard cells but can also include IO and corner cells and some small custom blocks. The individual components of the library are described in an appropriate layout format, such as GDSII or LEF.

Abstract Generator lets you import layout information and create abstracts for some or all of the cells in the library. You can then reference any of the library cells in your design, safe in the knowledge that a suitable abstract exists for that cell. After generating abstracts for library cells, you should not have to return to the tool unless the library is revised either in response to some change in the fabrication process or through the addition of new cells or modification of the existing ones.

Abstract Generator satisfies the requirements of library designers and production engineers by presenting an uncluttered flow through the library development process.

The more experienced user enjoys maximum flexibility in entering cell information, partitioning cells into exclusive sets, fine tuning option settings, and iterating through the abstract generation process. The tool also provides reliable support for moving backward in the flow and clearing feedback on potential and real problems with the abstracts generated.

The less experienced designer is provided with a simple flow through the essential steps required to update a library with predefined settings. The more flexible and user-friendly interface, that is, the integrated Abstract Generator, which can be launched in the Virtuoso Studio design environment is also available at the disposal of the novice users.

Related Topics

Flows Supported by Abstract Generator