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Optimal Metastability-Containing Sorting via Parallel Prefix Computation
2019
IEEE transactions on computers
Friedrichs et al. (TC 2018) showed that metastability can be contained when sorting inputs arising from time-to-digital converters, i.e., measurement values can be correctly sorted without resolving metastability using synchronizers first. However, this work left open whether this can be done by small circuits. We show that this is indeed possible, by providing a circuit that sorts Gray code inputs (possibly containing a metastable bit) and has asymptotically optimal depth and size. Our
doi:10.1109/tc.2019.2939818
fatcat:n3limvxr7zgzbhev47utnn5maq