MULTIPLIER FOR OPERATING N BITS AND N/2 BITS AND METHOD THEREFOR

A multiplier for multiplying n bits and n/2 bits is disclosed, wherein a word multiplication is implemented by input of two words. The apparatus includes an encoder receiving the two words and pretreating one of the two words, a partial product generating unit outputting a partial product by multiplying the pretreated word and the unpretreated word from the encoder in accordance with a word control signal, a Wallace tree adder dividing the partial product into first and second output signals, and an adder receiving the first and second output signals and outputting word and byte multiplication output results in accordance with the word control signal.