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 (US)
SUN JUNQING (US)
SUN JUNQING (US)
Application Number:
PCT/US2018/013361
Publication Date:
July 18, 2019
Filing Date:
January 11, 2018
Export Citation:
Assignee:
CREDO TECH GROUP LTD (US)
International Classes:
H03M9/00; H04L25/03
Foreign References:
| US20130073749A1 | 2013-03-21 | |||
| US20160134394A1 | 2016-05-12 | |||
| US20100329325A1 | 2010-12-30 | |||
| US20160037486A1 | 2016-02-04 | |||
| US20160337183A1 | 2016-11-17 |
Attorney, Agent or Firm:
KRUEGER, Daniel J. (US)
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