AXI4-Stream Interfaces - 7.2 English - PG138

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 subsystem cannot send data.
• If the receive <interface_name>_tvalid is stuck Low, the subsystem is not receiving data.
• Check that the aclk inputs are connected and toggling.
• Check that the AXI4-Stream waveforms are being followed. See Normal Transmit AXI4-Stream Transfer – Flag=0xA, Receive Status Transmit AXI4-Stream Transfer – Flag=0x5, and Mapping AXI DMA IP Buffer Descriptor Fields to AXI4-Stream Fields.
• Check subsystem configuration.
• Add appropriate core specific checks.