What This Document Is
This document outlines the requirements for Phase Two of a larger term project within an introductory digital integrated circuits course (ELENG 141) at the University of California, Berkeley. It serves as a detailed assignment specification, guiding students through the design and implementation of a crucial component in a digital system. It details the expectations for a practical, hands-on project involving circuit design and layout.
Why This Document Matters
This assignment is essential for students enrolled in the course who are actively building their understanding of digital logic design. It’s particularly valuable for those preparing to implement and verify integrated circuits. Students will benefit from carefully reviewing this document *before* beginning their work, as it lays out the specific deliverables and constraints for this stage of the project. It’s most useful when used in conjunction with the course lectures and prior project phases.
Topics Covered
* Adder/Subtractor Circuit Design
* Ripple-Carry Adder Architecture
* Full-Adder and Half-Adder Implementation
* Static Combinational Logic
* Circuit Layout and Verification (LVS/DRC)
* Input Capacitance Considerations
* SPICE Simulation and Analysis
* Digital Circuit Tradeoffs (Power vs. Performance)
What This Document Provides
* A clear description of the 5-bit adder/subtractor functionality and its role within a larger system.
* Detailed specifications for input and output signals, including ranges and formats.
* References to a provided standard cell library for circuit construction.
* Logical equations for fundamental building blocks (half and full adders).
* Guidance on utilizing true and complement inputs for efficient design.
* Information regarding simulation resources and verification procedures.
* A schematic diagram illustrating the adder’s block diagram and connections.
