The parameters used to generate each Aurora 64B/66B core determine the
interfaces available for that specific core. USER_DATA_S_AXIS_TX is an interface and the
s_axi_tx_* ports are grouped into that interface. The
interfaces are visible in the IP symbol as seen in the following figure the ports grouped in
it. In this section, in general, the interface appears as a single row entry followed by the
ports that are grouped in an interface by clicking on the + sign beside the interface.
Aurora 64B/66B cores can have four to eight interfaces. The following shows the Aurora
64B/66B IP symbol for the default core configuration with all flow control options and CRC
enabled.
Figure 1. Aurora 64B/66B IP Symbol
