Speed and energy optimized quasi-delay-insensitive block carry lookahead adder

• Main Authors: Mastorakis, N. E., Balasubramanian, Padmanabhan, Maskell, Douglas Leslie
• Other Authors: Ma, Jun
• Format: Article
• Language: English
• Published: 2019
• Subjects: Engineering::Computer science and engineering; Logic Circuits; Data Processing
• Online Access: https://hdl.handle.net/10356/90051; http://hdl.handle.net/10220/49393
• Institution: Nanyang Technological University

We present a new asynchronous quasi-delay-insensitive (QDI) block carry lookahead adder with redundant carry (BCLARC) realized using delay-insensitive dual-rail data encoding and 4-phase return-to-zero (RTZ) and 4-phase return-to-one (RTO) handshaking. The proposed QDI BCLARC is found to be faster a...