AMD has standardized IP interfaces on the open AMBA® 4 AXI4 interconnect protocol. This standardization eases integration of IP from AMD and third-party providers, and maximizes system performance. AMD has worked with Arm® to define the AXI4, AXI4-Lite, and AXI4-Stream specifications for efficient mapping into its device architectures.
AXI4 targets high-performance, high clock frequency system designs. It is suitable for high-speed interconnects. AXI4-Lite is a light-weight version of AXI4, and is used mostly for accessing control and status registers.
A Master uses AXI4-Stream to stream data unidirectionally to a Slave. DSP, Video, and Communications applications typically use this.