This section outlines the limitations of the Aurora 8B/10B core for AXI4-Stream support. It is essential to observe two limitations while interfacing the Aurora 8B/10B core with the AXI4-Stream compliant interface core:
•The Aurora 8B/10B core supports only continuous aligned streams and continuous unaligned streams. The position bytes are valid only at the end of packet. In other words, tkeep is sampled only at tlast assertion.
•The AXI4-Stream protocol supports transfers with zero data at the end of the packet, but the Aurora 8B/10B core expects at least one byte to be valid at the end of the packet. In other words, tkeep should contain a non-zero value during tlast assertion.