BASIC INSIGHTS INTO THE FUTURISTIC AXI PROTOCOL
The AXI protocol was created to meet the interface needs of a wide range of components while allowing for flexibility in how they are connected. It was originally conceived for high-frequency systems. AXI is backward compatible with the AHB and APB from the previous AMBA revision, making it ideal for high-frequency, low-latency designs. Understanding AXI will provide you with a thorough understanding of how an SoC operates, as well as make you a more versatile and well-rounded designer. The AHB (Advanced High-Performance Bus) is a single-channel bus that allows multiple masters and slaves to communicate. A priority arbiter determines which master gets to use the bus at any given time, while a central decoder selects slaves. Operations are carried out in bursts that can last several bus cycles. An address and control phase precedes the data phase in every burst transfer. AXI4 DMA follows a similar philosophy but employs multiple, dedicated reading and writing channels. AXI,...