On cycle borrowing analyses for interconnected chips driven by clocks having different but commensurable speeds

The author considers the construction of synchronous systems having components driven at different rates by different, but commensurable, clocks. Furthermore these systems are to be constructed using level-sensitive latches with the intent of exploiting cycle borrowing over the entire system. The author presents a framework in which the entire system is managed as a single clocked entity, and investigates a timing analysis technique for such systems. Results for small examples are presented. The interface between such chips is studied; no resynchronizers are required. Alternate clock waveforms, and their effect on analysis complexity, are discussed