Design of Locally-Clocked Extended Burst-Mode AFSMs without Timing Analysis

The asynchronous paradigm is an alternative that can solve the synchronous design problems caused by the global clock signal that are worse in the Deep-Sub-Micron CMOS Technology. Asynchronous controllers based on Asynchronous Finite State Machines (AFSM) are widely used in control unit design of asynchronous systems. Therefore, this paper proposes a novel architecture for AFSMs in the local clock style. AFSMs are described in the extended burst-mode (XBM) specification. The existence of a local clock reduces requirements of asynchronous logic, but the timing demands may require the insertion of delay elements that leads to degradation of performance and reliability. The novel proposed local clock architecture is robust to setup and hold times violations, but also it interacts with environment without the assumption of fundamental mode, so they are free of timing analysis and they don't need to introduce any kind of delays.