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Add 1.6t support to sonic-xcvrd #644

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Description

Update xcvrd to support 1.6T. It will check for "1.6T" in the following host electrical IDs:

ID Host Electrical Interface (Specification Reference) Application Bit Rate (Gb/s) Lane Count Lane Signaling Rate (GBd) Modulation
88 1.6TBASE-CR8 (Clause179) 1700 8 106.25 PAM4
131 1.6TAUI-8 (Annex176E) 1700 8 106.25 PAM4

Motivation and Context

1.6T will need to be supported in SONiC.

How Has This Been Tested?

It has not. These changes are being made in advance of hardware.

Which release branch to backport (provide reason below if selected)

  • 202411

Additional Information (Optional)

@mssonicbld
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/azp run

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Azure Pipelines successfully started running 1 pipeline(s).

@mssonicbld
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/azp run

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Azure Pipelines successfully started running 1 pipeline(s).

@bobby-nexthop bobby-nexthop marked this pull request as ready for review July 22, 2025 18:52
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