Custom integrated circuit layout.
- A layered suite of layout-data formats, each expressed in the ProtoBuf schema description language.
- Libraries for compiling from more abstract and terse such expressions into more-detailed.
- Exchange with industry-standard formats such as GDSII and LEF.
Each of the internally-defined layout21 compilers, parsers and generators are implemented in Rust. Cross-language compatibility of the underlying ProtoBuf-based data schema allows for usage in most other popular languages.
Like most large Rust projects layout21 is a multi-crate workspace. Some internal crates are publicly available through crates.io. The "top-level" layout21 crate includes dependencies on all, and is the easiest entry-point for using all layout21 functionality. In layout21's namespace and in documentation most child-crates are referred to by their suffixes, i.e. layout21::raw.
| Crate | Description | crates.io | docs.rs |
|---|---|---|---|
| gds21 | GDSII Parsing, Generation, and Manipulation |  |
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| lef21 | LEF Parsing, Generation, and Manipulation |  |
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| layout21protos | Protobuf Schema Definitions | ||
| layout21raw | "Raw" geometric layout. Analogous to most existing layout systems. | ||
| layout21tetris | Gridded gate-array-style semi-custom layout | ||
| layout21 | Meta-crate including all of the above |