This Figure illustrates checking CRC at the core level. The figure shows 6 n bytes of received data of a frame. At the end of the frame, the core asserts m_axi_rx_tlast and crc_valid . In the same clock cycle the transmitted and computed CRCs are compared. If the values match, the crc_pass_fail_ n signal is asserted. - 12.0 English

PG074 Aurora 64B/66B LogiCORE IP Product Guide

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12.0 English
Figure 2-38: A 6 n Data Beats Frame with CRC

X-Ref Target - Figure 2-38