Signal loss detector
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United States of America Patent
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Jan 30, 2018
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N/A
app pub date -
Apr 17, 2015
filing date -
Apr 17, 2015
priority date (Note) -
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Abstract
In an example, an apparatus for detecting signal loss on a serial communication channel coupled to a receiver includes an input, a detector, and an output circuit. The input is configured to receive decisions generated by sampling the serial communication channel using multiplexed decision paths in a decision feedback equalizer (DFE). The detector is coupled to the input and configured to monitor the decisions for at least one pattern generated by the multiplexed decision paths in response to absence of a serial data signal on the serial communication channel. The output circuit is coupled to the detector and configured to assert loss-of-signal in response detection of the at least one pattern by the detector.
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