AXI4-Stream Interfaces - AXI4-Stream Interfaces - 4.3 English - PG242

If data is not being transmitted or received, check the following conditions:

• If transmit tready is stuck Low following the tvalid input being asserted, the transmit core cannot send data.
• If the receive tvalid is stuck Low following the tready input being asserted, the core is not receiving data.
• Check that the core_clk signals are connected to the TX core AXI4-Stream data source or the RX core AXI4-Stream data sink.
• Check that the AXI4-Stream waveforms are being followed (see Vivado Design Suite: AXI Reference Guide (UG1037)).
• Check core configuration.