NCL_X design flow: Fibonacci Series Machine as a Case Study

In spite of the many advantages of asynchronous methodologies in terms of power, timing, EMI and noise immunity, they are still not widely accepted in the industry, mainly due to poor CAD support. NCL_X is a design flow, which was suggested in aim to close this gap, and enable the design of asynchronous digital circuits by standard commercial CAD tools. In this paper I review the papers which originally suggested NCL_X design flow, and use an asynchronous Fibonacci series calculator as a case study for evaluating the benefits of NCL_X in terms of area, power, timing and complexity of design. Finally, I conclude and refer to NCL_X within the wider context of design methodologies of asynchronous circuits.