AXI4-Stream Interfaces - 7.2 English - PG149

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

• If transmit <interface_name>_tready is stuck Low following the <interface_name>_tvalid input being asserted, the core cannot send data.
• If the receive <interface_name>_tvalid is stuck Low, the core is not receiving data.
• Check that the ACLK inputs are connected and toggling.
• Check that the AXI4-Stream waveforms are being followed (see figure 1).
• Check the core configuration