RECONFIGURABLE CIRCUIT, RECONFIGURABLE CIRCUIT SYSTEM AND PLACEMENT AND ROUTING METHOD OF RECONFIGURABLE CIRCUIT

摘要

PPROBLEM TO BE SOLVED: To solve the matter of a conventional reconfigurable circuit that since an ALU of multiple bits is occupied even when an enable signal of 1-bit is generated, many ALUs are needed resulting in enlargement of circuit scale. PSOLUTION: The reconfigurable circuit comprises a plurality of cells 10 each having a first selecting means 1 and a second selecting means 2 of K input 1 output, an ALU 4 for inputting outputs of N-bits from the first selecting means and the second selecting means and carrying out a specified arithmetic logical operation, a selection control means 3 which outputs a selection control signal Ss for specifying selection of the first selecting means and the second selecting means, and an ALU control means 5 which outputs an ALU control signal Sa for specifying an operation being carried out in the ALU, and means 21 and 22 for connecting respective cells through a network of bus. The first selecting means, the second selecting means and the ALU are reconfigurable, and the selection control signal controls the first selecting means and the second selecting means to output an i-th input while arranging its predetermined M[i] bits in a predetermined order. PCOPYRIGHT: (C)2009,JPO&INPIT