OUT-OF-BAND BASED INDEPENDENT LINK TRAINING OF IN-BAND LINKS BETWEEN HOST DEVICES AND OPTICAL MODULES
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United States of America Patent
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Issued Date -
Mar 7, 2024
app pub date -
Aug 30, 2023
filing date -
Sep 1, 2022
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Abstract
A first optical module includes an optical transceiver and a chip. The optical transceiver, subsequent to completion of link training of an in-band transmission link between the first optical module and a host device, waits for a second optical module to come up including transmitting a first awake signal from the first optical module to the second optical module, and receives a second awake signal from the second optical module when the second optical module is up. The chip i) based on a first out-of-band signal transmitted via an out-of-band link, performs the link training of the in-band transmission link independently of an in-band reception link between the first optical module and the host device, and ii) based on the second awake signal and a second out-of-band signal transmitted via the out-of-band link, performs link training of the in-band reception link independent of the in-band transmission link.
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