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Design of VXIbus register based interface based on VHDL

The FPGA based VXI interface design technology is getting more and more mature as more and more VXI bus modular instruments are developed. This paper shows how to implement the VXI register based interface with VHDL. The initialization and self test circuits, device and register addressing circuits, reading and writing registers and data acknowledgement circuits are illustrated in detail. The simulation results combining with VXIbus timing sequence are also partly given.