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US 8,284,882 B2Granted
Methods and apparatus for qualification of update of clock recovery and equalization
AssigneeLSI Corporation
InventorsGregory A. Kleese, Mohammad S. Mobin, Kenneth W. Paist
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Abstract
Methods and apparatus are provided for CDR and equalization update qualification. A block of received data comprising a plurality of multiple tone patterns is processed. Equalization adaptation and/or updates to a timing recovery process can be selectively disabled if one or more of the multiple tone patterns exceed a corresponding predefined threshold.
Claims20
A method for timing recovery, comprising:
- obtaining a block of received data, said received data comprising a plurality of multiple tone patterns;
- calculating tone statistics of one or more of said multiple tone patterns;
- and
- selectively disabling an update of said timing recovery from said received data if one or more of said multiple tone patterns exceed a corresponding predefined threshold.
1 more element
An equalization adaptation method, comprising:
- obtaining a block of received data, said received data comprising a plurality of multiple tone patterns;
- calculating tone statistics of one or more of said multiple tone patterns;
- and
- selectively disabling said equalization adaptation if one or more of said multiple tone patterns exceed a corresponding predefined threshold.
1 more element
A timing recovery system, comprising:
- a memory;
- and
- at least one processor, coupled to the memory, operative to:
- obtain a block of received data, said received data comprising a plurality of multiple tone patterns;
- calculate tone statistics of one or more of said multiple tone patterns;
- and
- selectively disable an update of said timing recovery from said received data if one or more of said multiple tone patterns exceed a corresponding predefined threshold.
4 more elements
An equalization adaptation system, comprising:
- a memory;
- and
- at least one processor, coupled to the memory, operative to:
- obtain a block of received data, said received data comprising a plurality of multiple tone patterns;
- calculate tone statistics of one or more of said multiple tone patterns;
- and
- selectively disable said equalization adaptation if one or more of said multiple tone patterns exceed a corresponding predefined threshold.
4 more elements
Dependencies are inferred from the claim text.