![]() Still, however, the number of asynchronous processors commercially available is scarce, mainly due to an insufficient electronic design and automation tools support, an ambiguous design flow and testing mechanisms for asynchronous logic, and, most importantly, absence of a forum to look for relevant works, explaining the design steps and tools for such microprocessors. Because of these advantages, there have been numerous attempts on building general and special purpose microprocessors during the last three decades. ![]() Asynchronous logic has been known for its ability to address the aforementioned challenges by means of closed-loop handshake protocols, instead of notorious clock signals. ![]() These include distribution of clock in the GHz range, robustness to delay variations, reduction in electromagnetic interference and energy conservation, and to name a few. Proceeding miniaturization in VLSI circuits continues to pose challenges to the conventionally used synchronous design style in microprocessors.
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