Conflict-free Access Mechanism and Bit Identifying Technique Research of Reconfigurable Memories

This paper analyzes emphatically the read-write conflict mechanism of reconfigurable memory, and reveals the relations of address conflict, readout mapping and routing of memory under reconfigurable condition. Besides, the paper presents a bit identifying method for achieving the high-powered conflict-free reconfigurable memory. Buffering the writing operations and adding identifying bits for input data when the conflict occurs, the identifying bits use for controlling the data to input to memory core or output to memory. Comparing with another method, the experiment results of verifying in 0.13-m and 0.18-m mainstream CMOS technologies show obvious advantages: area decreases about 11%; speed increases about 21%. This technology has been applied into a homemade million-gate FPGA device, and testing results show it have achieved the conflict-free purpose.