1.047GHz, 1.2V, 90nm CMOS, 2-Way VLIW DSP Core Using Saturation Anticipator Circuit

Abstract

1.047GHz synthesizable 2-way VLIW general purpose DSP core has been developed by 1.2V 90nm CMOS technology. The key technology is to detect saturation from adder's inputs in an ALU and parallelize the saturation check with the adder operation. The proposed saturation anticipator circuit and the logic structure optimization improve DSP's clock frequency by 20.8%. The test chip also runs 0. 10muW/MHz at 0.8V low power operation mode