Multi-mode fusion multiplier

A multi-mode fusion multiplier, configured to receive inputs A[m1−1:0] and B[m2−1:0] or A0[m3−1:0] and B0[m4−1:0] and to perform a binary single-multiplication operation A[m1−1:0]×B[m2−1:0] or an accumulated sum operation of 2N binary multiplications A0[m3−1:0]×B0[m4−1:0], wherein m1≥2N×m3, m2≥2N×m4, N is a positive integer, the multi-mode fusion multiplier comprises P precoders, Q groups of fusion coders, and a compressor, and m1, m2, m3, m4, P, and Q are integers greater than 1;

• the P precoders are configured to precode a first value based on a single-multiplication indication signal or a multi-multiplication indication signal, to provide a precoding result, wherein the first value is A[m1−1:0] when the single-multiplication indication signal indicates that the single-multiplication operation is performed, or the first value comprises 2N pieces of A0[m3−1:0] when the multi-multiplication indication signal indicates that the accumulated sum operation is performed, wherein the 2N pieces of A0[m3−1:0] are arranged in a sequence from a low digit weight to a high digit weight;
• the Q groups of fusion coders are configured to code the precoding result and a second value, to provide a plurality of partial products, wherein the second value is B[m2−1:0] when the single-multiplication indication signal indicates that the single-multiplication operation is performed, or the second value comprises 2N pieces of B0[m4−1:0] when the multi-multiplication indication signal indicates that the accumulated sum operation is performed, wherein the 2N pieces of B0[m4−1:0] are arranged in a sequence from a high digit weight to a low digit weight;
• and
• the compressor is configured to compress the plurality of partial products, to provide two accumulated values, wherein a sum of the two accumulated values is a result of the single-multiplication operation or the accumulated sum operation.