Method for Data Synchronization
First Claim
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1. A method for synchronizing a sampling clock onto a received data stream, the method comprising:
- performing the generation of a temperature code representing the delay difference between a clock signal and an edge of the received data;
evaluating the temperature code,aligning the clock to the data edges by applying a negative delay onto the system clock; and
offsetting the aligned clock to optimally sample the received data stream.
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Abstract
A method, apparatus, and system for a data synchronizer/serial link receiver that performs the alignment of the sampling clock used to retime asynchronous customer data by the application of a negative delay onto the system clock whereas the value of the applied negative delay is derived from the analysis of a temperature code obtained by a tapped delay line in conjunction with the application of preceding replica delay lines for the in-phase and quadrature clock signals.
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1 Claim
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1. A method for synchronizing a sampling clock onto a received data stream, the method comprising:
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performing the generation of a temperature code representing the delay difference between a clock signal and an edge of the received data; evaluating the temperature code, aligning the clock to the data edges by applying a negative delay onto the system clock; and offsetting the aligned clock to optimally sample the received data stream.
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Specification
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Current AssigneeInternational Business Machines Corporation
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Original AssigneeInternational Business Machines Corporation
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InventorsKossel, Marcel A.
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Application NumberUS12/165,309Publication NumberTime in Patent OfficeDaysField of SearchUS Class Current375/354CPC Class CodesH03L 7/0812 and where no voltage or cur...H04L 7/0338 the correction of the phase...
