DDR Memory Access through GMIO - DDR Memory Access through GMIO - 2026.1 English - UG1603

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

Document ID
UG1603
Release Date
2026-07-08
Version
2026.1 English

The main data streams to and from the AI Engine-ML are as follows:

  • The AI Engine-ML to PL streaming interface
  • GMIO, which makes external memory-mapped connections to or from the global memory.

The interface between the PS and AI Engine-ML has a low throughput and is ideal for configuration. The AI Engine-ML-GMIO directly connects to the DDR memory through the AI Engine-ML-NoC master unit (NMU).

The bandwidth of AI Engine-ML GMIO depends on the number of NMUs and DDR memory controllers used in the platform.