Specifying a 3-phase or n-phase eye pattern
AssigneeQUALCOMM Incorporated
InventorsGeorge Alan Wiley, Chulkyu Lee
Life of this patent
Estimating the term…
Abstract
System, methods and apparatus are described that facilitate tests and measurements related to multi-wire, multi-phase communications links. Information is transmitted in N-phase polarity encoded symbols and an eye pattern corresponding to the symbols may be generated such that the symbols are aligned with a trigger for each symbol that corresponds to a clock edge used to sample the symbols. The eye pattern may be used to determine sufficiency of setup times in the communication links and other such characteristics defining a communications channel capabilities.
Claims30
A method for analyzing a communications link, comprising:
- determining a trigger corresponding to a first-occurring transition at a symbol boundary for each of a plurality of symbols received from the communications link;
- and
- generating an image comprising superimposed representations of the plurality of symbols, wherein the representations are arranged with respect to one another in the image by temporally aligning triggers corresponding to the plurality of symbols,
- wherein each of the triggers is correlated with a sampling clock used to capture data communicated in a corresponding symbol.
An apparatus, comprising:
- means for determining a trigger corresponding to a first-occurring transition at a symbol boundary for each of a plurality of symbols received from a communications link;
- and
- means for generating an image comprising superimposed representations of the plurality of symbols, wherein the representations are arranged with respect to one another in the image by temporally aligning triggers corresponding to the plurality of symbols,
- wherein each of the triggers is correlated with a sampling clock used to capture data communicated in a corresponding symbol.
An apparatus, comprising:
- a processing circuit configured to:
- determine a trigger corresponding to a first-occurring transition at a symbol boundary for each of a plurality of symbols received from a communications link;
- and
- generate an image comprising superimposed representations of the plurality of symbols, wherein the representations are arranged with respect to one another in the image by temporally aligning triggers corresponding to the plurality of symbols,
- wherein each of the triggers is correlated with a sampling clock used to capture data communicated in a corresponding symbol.
A processor-readable storage medium having one or more instructions which, when executed by at least one processing circuit, cause the at least one processing circuit to:
- determine a trigger corresponding to a first-occurring transition at a symbol boundary for each of a plurality of symbols received from a communications link;
- and
- generate an image comprising superimposed representations of the plurality of symbols, wherein the representations are arranged with respect to one another in the image by temporally aligning triggers corresponding to the plurality of symbols,
- wherein each of the triggers is correlated with a sampling clock used to capture data communicated in a corresponding symbol.
Dependencies are inferred from the claim text.