Assertion of TX_AXI_TUSER
The assertion of TX_AXI_TUSER indicates an error in data streaming. Upon
the assertion of TX_AXI_TUSER, the Ethernet 10G MAC core
terminates with an error frame, i.e., XGMII_TXD = FE,
XGMII_TXC = 1, and drops any remaining data
frames. Refer to Figure 1.
TX_AXI_TUSER
Note: When
TX_AXI_TVALID = 0, the
whole column of TX_AXI signals (TDATA,
TKEEP, TLAST, TUSER) is deemed as
invalid, as described in TX AXI ST 64. Any
assertion of TX_AXI_TUSER during TX_AXI_TVALID =
0 is not an error.