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Patent Searching and Data


Title:
SERDES SYSTEMS AND METHODS HAVING AN INDIRECT BACKCHANNEL
Document Type and Number:
WIPO Patent Application WO/2019/139592
Kind Code:
A1
Abstract:
Illustrative serializer-deserializer (SerDes) modules and methods employ an indirect backchannel suitable for communicating equalization information and/or other link-related data in the absence of a paired return channel on the receiver substrate. One method embodiment is implemented by a transceiver module: (a) receiving, with an integrated receiver substrate, a receive signal on each of multiple receive lanes, the receive signals being sent by a remote node; (b) converting each said receive signal into a lane of a multi-lane receive data stream, wherein said converting includes demodulation and error measurement; (c) deriving remote adaptation information based at least in part on the error measurement; (d) conveying the remote adaptation information via a control bus to an integrated transmitter substrate; and (e) sending to the remote node, using the integrated transmitter substrate, a transmit signal on each of multiple transmit lanes, the transmit signals including the remote adaptation information on an embedded backchannel.

Inventors:
QIAN, Haoli (48617 Tonopah Ct, Fremont, California, 94539, US)
SUN, Junqing (630 Sammie Ave, Fremont, California, 94539, US)
Application Number:
US2018/013361
Publication Date:
July 18, 2019
Filing Date:
January 11, 2018
Export Citation:
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Assignee:
CREDO TECHNOLOGY GROUP LIMITED (Ugland House, Grand Cayman, KY1-1104, KY)
International Classes:
H04L25/03; H03M9/00
Foreign References:
US20130073749A12013-03-21
US20160134394A12016-05-12
US20100329325A12010-12-30
US20160037486A12016-02-04
US20160337183A12016-11-17
Attorney, Agent or Firm:
KRUEGER, Daniel J. (Ramey & Schwaller, LLP5020 Montrose Blvd., Ste. 75, Houston Texas, 77006, US)
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