US Patent 9210008 SerDes communications with retiming receiver supporting link training
Patent 9210008 was granted and assigned to Texas Instruments on December, 2015 by the United States Patent and Trademark Office.
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A SerDes corn link with a retiming receiver is operable in link training (LT) mode. A SerDes transmitter includes a TX FIR channel driver to transmit TX Data with TX pre-emphasis EQ based on TX FIR coefficients. The retiming receiver includes an RTE (retimer/reclocker) with an RT FIR driver outputting retimed RX Data based on RT FIR coefficients. A link training unit (LTU) adjusts RT FIR coefficients based on a comparison of impulse cursor information for RX Data signals received at the RTE input and re-timed RX Data signals output from the RT FIR, so that the adjusted RT FIR coefficients correspond to the TX FIR coefficients (including reflecting LT changes in TX pre-emphasis EQ). In effect, the LTU performs a linear FIR coefficient translation from the TX FIR to the RT FIR, propagating LT FIR coefficient changes from RTE input to output.
US Patent 09210008 SerDes communications with retiming receiver supporting link training US Patent 9210008 SerDes communications with retiming receiver supporting link training
US Patent 09210008 SerDes communications with retiming receiver supporting link training
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