Examples of Traffic Flow Scenarios - Examples of Traffic Flow Scenarios - 2026.1 English - UG1504

This example analyzes traffic for a PCIe-based interface system. It captures the dataflow stages from external host to an endpoint device. The data flows over the PCIe link.

1. PCIe-based interface DMAs write the data through the NoC to the DRAM.
2. Accelerator block fetches data from the DRAM through the NoC and stores the data in on-chip memory.
3. DRAM stores processed data.
4. PCIe-based interface DMAs send the data back to the host DDR memory over the PCIe interface.
5. Downstream PCIe interface interrupt notifies the host processor about the completion of the data transfer.

Here is a similar example for an embedded system design. The primary data can originate from an ethernet interface or any secondary storage device.

1. Embedded DMA device writes the data through the NoC to the DRAM.
2. Accelerator hardware fetches data through the NoC and optionally, stores the data in on-chip memory.
3. Data mover block writes the final output data from the accelerator block to the DRAM through the NoC.
4. Data mover block notifies the embedded processor about the completion of the data transfer.