10GBASE-T training algorithm
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United States of America Patent
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app pub date -
Sep 26, 2008
filing date -
Feb 7, 2007
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Abandoned
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Abstract
A method of identifying and correcting each of the changes that may occur with wire pairs between the transmitter and receiver in Ethernet 10 GBase-T cabling is provided. The method includes four wire pairs A, B, C and D, a polarity swapping and scrambler state machine that determine if the chosen pair matches the requirements for pair A. A slave Tap state machine generates a rule for correct B, C and D patterns based on a pair chosen as pair A. The cables B, C and D are iteratively swapped to rearrange the pair mapping into the polarity swap state machine, and a deskew state machine identifies the latency difference between the different pairs. If the rules are not satisfied, a new pair A is designated at the swapping state machine and the process is repeated until the rules are satisfied.
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