Synopses & Reviews
L-Edit is a CAD tool, specifically a layout tool for VLSI Design. It consists of a set of software tools that produce the final manufacturing specifications for a chip design. All matters pertaining to the geometry of the layout, its precise dimensions, and design rules for conforming to desired specifications are included. L-Edit is not a stand-alone product; it is intended to be used in conjunction with a main text. A tutorial comes with the software tool showing the student how to do CMOS chip design using these tools. ..VLSI design is done on the computer. It isnt very useful to look at the pretty four- color plates that adorn textbooks on the subject. Short of allowing the student to send their chop design to a foundry to be fabricated, this product gives you everything else the big boys do in the real world. Up to now, the only programs similar to L-Edit were available on workstations. Schools have to pay a great deal to purchase and maintain site license software. L-Edit runs on the PC with minimum system demands. Students will not need to wait for a seat or stand in line to use the workstation. The students can do real design anywhere at any time.
Synopsis
Physical Design of CMOS Integrated Circuits Using L-Edit is the first book/software package that enables engineering students and professionals to perform full IC layout on an inexpensive personal computer. The Student Version of L-Edit, included with the book on a 3.5-inch disk, is a full-featured layout editor that runs on MS-DOS compatible computers with minimal hardware requirements (640K RAM, a mouse, and an EGA or better color monitor). L-Edit allows the user to implement the physical design of an integrated circuit at the silicon level, and provides output for circuit simulation on SPICE. The entire process of chip design - once the exclusive province of workstation-based CAD systems - can now be performed on a PC. Database files for many standard MOSIS CMOS processes are provided on disk, including Orbit and HP 2.0 and 1.2-micron technology base definitions. The program provides for circuit extraction (translating the layout to a SPICE-compatible text file), and design rule checking using predefined MOSIS rules or custom-designed sets. It also features a unique cross-sectional viewer that constructs the side view layering from the layoutthis viewer helps users visualize the link between layout drawings and the device structure. Circuit designs created on the Student Version of L-Edit can be translated to GDS II or CIF format for submission to a fabrication foundry using the Professional Version of L-Edit.
About the Author
John P. Uyemura is Professor of Electrical and Computer Engineering, late of Georgia Institute of Technology.
Table of Contents
1. Introduction to L-Edit. 2. CMOS Processing. 3. Layout of CMOS Integrated Circuits. 4. Mosfets. 5. CMOS Logic Circuits. 6. Concepts for VLSI Chip Design. 7. L-EDIT Command Summary. 8. Cross-Section Viewer. 9. Layer Generation in L-Edit. 10. Design Rule Checker. 11. Circuit Extraction Using L-Edit. Index.