Asynchronous Interface For Communications Between Computing Resources That Are In Different Clock Domains
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United States of America Patent
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Oct 19, 2017
app pub date -
Apr 13, 2016
filing date -
Apr 13, 2016
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Abstract
A method is performed by a data transmitting computing resource operating in a first clock domain of a computing system to transfer data to a data receiving computing resource operating in a second clock domain of the computing system different from the first clock domain. The method includes placing data on a parallel data channel including a plurality of data lines connecting the data transmitting computing resource and the data receiving computing resource; waiting a predetermined amount of time after the placing of the data on the parallel data channel, the predetermined amount of time based on different propagation times of the plurality of data lines; and, after waiting the predetermined amount of time, notifying the data receiving computing resource that the data placed on the parallel data channel are valid.
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