Data Communication via AXI4-Stream Interconnect - 2024.1 English

AI Engine-ML Kernel and Graph Programming Guide (UG1603)

Document ID
UG1603
Release Date
2024-06-06
Version
2024.1 English

AI Engine-ML cores can directly communicate through the AXI4-Stream interconnect without any DMA and memory interaction. Data can be sent from one AI Engine-ML to another or broadcast through the streaming interface. The data bandwidth of a streaming connection is 32-bit per cycle and built-in handshake and backpressure mechanisms are available.

The stream connection can be unicast or multicast. Note that in the case of multicast communication, the data is sent to all the destination ports at the same time and only when all destinations are ready to receive data.