Packet Mode occurs when a packet with a certain channel number is
transferred in its entirety across the TX AXI4-Stream
bus without interruption by a packet belonging to a different channel. The SOP data is
transferred on a segment when the corresponding tx_axis_tuser_sop<M> is asserted. The final data belonging to the
packet is transferred on a segment when the corresponding tx_axis_tuser_eop<M> is asserted.