CoreAXI4ProtoConv is a high-performance protocol conversion IP designed to enable interoperability between different AMBA AXI protocol variants within FPGA-based systems. The core allows designers to connect components using AXI4, AXI3, AXI4-Lite, and other AXI-based interfaces without requiring custom protocol adaptation logic, simplifying system integration and reducing development effort. Based on the AXI protocol conversion architecture, the IP automatically translates transactions between differing protocol implementations while maintaining transaction integrity and protocol compliance. The core manages conversion of protocol-specific attributes such as burst transactions, protection signals, lock semantics, transaction IDs, and response handling. By bridging protocol differences transparently, it allows legacy IP and modern AXI4-based subsystems to coexist within the same design. CoreAXI4ProtoConv is commonly deployed as part of larger AXI interconnect architectures where various initiators and targets operate using different AXI protocol versions. Its configurable architecture supports scalable FPGA SoC designs while helping maintain performance and reducing integration complexity. The IP is particularly useful in data processing, embedded computing, memory subsystems, and communication applications where heterogeneous AXI-based IP blocks must communicate efficiently.