Continuous data transfer on the transmit AXI4-Stream interface is possible. The tx_axis_tvalid signal can remain continuously High with packet
boundaries defined solely by the tx_axis_tlast
signal asserted for the end of the Ethernet packet.
However, the core can deassert the tx_axis_tready acknowledgment signal to throttle the client data rate
as required. Refer to the following two figures. The client data logic can update
the AXI4-Stream interface with valid data while
the core has deasserted the tx_axis_tready
acknowledgment signal. After the valid is asserted
and new data has been placed on the AXI4-Stream,
it must remain there until the core has asserted the tx_axis_tready signal.
Figure 1. Back-to-Back Continuous Transfer on Transmit Client
Interface—32-bit
Figure 2. Back-to-Back Continuous Transfer on Transmit Client
Interface—64-bit
