Intel® Arria® 10 Transceiver PHY User Guide

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ID 683617
Date 3/28/2022
Public
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5.3.1.4. Polarity Inversion Feature

The polarity inversion feature is used in situations where the positive and the negative signals of a serial differential link are erroneously swapped during board layout. You can control this feature through tx_polinv port, by enabling the Enable TX Polarity Inversion option under the Standard PCS tab of the Native PHY IP Core. The polarity inversion feature inverts the value of each bit of the input data. For example, if the input data is 00101001, then the data gets changed to 11010110 after polarity inversion.

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