A coarse-grained reconfigurable computing unit

This paper presents a 16-bit coarse-grained reconfigurable computing unit. It consists of computing part and interconnection part. The computing part includes adders/subtractors, shifters and complementers, whereas the interconnection part includes multiplexers. Apart from basic functions, it is capable of performing 1-output and 2-output constant multiplication, 4-input adder tree, absolute difference and butterfly operation. The implementation results show that the area is 2964 gates with the critical path of 18.24ns under 130-nm CMOS technology.