TRANSMITTING CLOCK REFERENCE OVER REVERSE CHANNEL IN A BIDIRECTIONAL SERIAL LINK
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United States of America Patent
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Issued Date -
Oct 17, 2024
app pub date -
Apr 26, 2024
filing date -
Apr 26, 2024
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Abstract
A clock recovery circuit includes a clock detector configured to receive a serial data stream from a remote device over a reverse channel, wherein the serial data stream includes clock reference data, reverse channel data, or a combination of the clock reference data and the reverse channel data, and the clock detector configured to output a clock detect signal in response to detecting the clock reference data in the serial data stream; a phase lock loop including a first detector configured to receive the serial data stream and to detect phase and frequency; and a controller configured to receive the clock detect signal and to selectively enable the first detector based on the clock detect signal.
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