AXI Interview Questions Archives | The Art of Verification

AXI Interview Questions

AXI interview questions usually test the same core ideas: the five channels and the valid/ready handshake, burst types (FIXED, INCR, WRAP) and the 4KB boundary rule, responses, outstanding and out-of-order transactions, exclusive access, and how ACE adds cache coherency on top of AXI. The article below explains each of these in plain terms. For SystemVerilog, UVM and assertion questions, see the Interview Preparation page.

Interview Questions

AXI Protocol Explained: Channels, Handshake, Bursts and Cache Coherency

ByThe Art of Verification June 24, 2021November 6, 2026

In short: AXI (Advanced eXtensible Interface) is Arm’s on-chip bus for connecting masters like CPUs and DMA engines to memories and peripherals. It splits every transfer into five independent channels: write address, write data, write response, read address and read data. Each channel moves a beat only when VALID and READY are both high. Bursts…