Synthesis of High Performance Low Power Dynamic CMOS Circuits

This paper presents a novel approach for the synthesis of dynamic CMOS circuits using Domino and Nora styles. As these logic styles can implement only non-inverting logic, conventional logic design approaches cannot be used for Domino/Nora logic synthesis. To overcome this problem, we have used a new concept called unate decomposition of Boolean functions. The unate decomposition expresses a general Boolean function in terms of only a minimum number positive and negative unate functions, which can be readily mapped to a two-level network of Domino/Nora logic circuit. To deal with functions of very large number of variables, a function is first decomposed into sub-functions of not more than 15 variables. Unate decomposition is efficiently performed for each of these sub-functions independently. However, two-level Domino/Nora realization for these functions are quite often not suitable for the realization of practical VLSI circuits having reasonable delay because of the large number of ...

• Type: Conference
• Year: 2002
• Where: VLSID
• Authors: Debasis Samanta, Nishant Sinha, Ajit Pal
• Keywords: Computer Architecture, Dynamic CMOS Circuits, Low Power Circuits, Static CMOS Circuits, VLSID 2002