Example B: Receiving a Message with NFC Idles Inserted - 12.0 English

PG074 Aurora 64B/66B LogiCORE IP Product Guide

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12.0 English

This Figure shows an example of the TX user interface signals in immediate NFC mode when an NFC message is received. The NFC message sends 8'b01 , requesting two cycles without data transmission. The core deasserts s_axi_tx_tready to prevent data transmission for two cycles.

Figure 2-20: Transmitting a Message with NFC Idles Inserted

X-Ref Target - Figure 2-20


Aurora 64B/66B cores can also operate in completion mode where NFC idles are only inserted before the first data bytes of a new frame. If a completion mode core receives an NFC message while it is transmitting a frame, the core finishes transmitting the frame before deasserting s_axi_tx_tready to insert idles.