Title :
A 260mV 468GOPS/W 256b 4-way to 32-way vector shifter with permute-assisted skip in 22nm tri-gate CMOS
Author :
Agarwal, Amit ; Hsu, Steven ; Mathew, Sanu ; Anders, Mark ; Kaul, Himanshu ; Sheikh, Farhana ; Krishnamurthy, Ram
Author_Institution :
Circuits Res. Lab., Intel Corp., Hillsboro, OR, USA
Abstract :
A 4-way to 32-way reconfigurable 256b vector shifter with measured 2.3GHz operation consuming 41mW is fabricated in 0.9V, 22nm tri-gate CMOS. Byte-wise any-to-any permute-assisted skip for coarse-grained byte shifts, rotate-back shifter, reconfigurable mask bit generation/decoder and ultra-low voltage circuits enable 38% area reduction and 240mV-1.1V wide dynamic voltage range with a measured 8.2x higher energy efficiency at 260mV compared to nominal 0.9V operation.
Keywords :
CMOS integrated circuits; low-power electronics; masks; microprocessor chips; byte-wise any-to-any permute-assisted skip; coarse-grained byte shifts; frequency 2.3 GHz; power 41 mW; reconfigurable mask bit generation/decoder; rotate-back shifter; size 22 nm; tri-gate CMOS; ultra-low voltage circuits; vector shifter; voltage 240 mV to 1.1 V; word length 256 bit; CMOS integrated circuits; Decoding; Delay; Energy efficiency; Flip-flops; Vectors; Voltage measurement;
Conference_Titel :
ESSCIRC (ESSCIRC), 2012 Proceedings of the
Conference_Location :
Bordeaux
Print_ISBN :
978-1-4673-2212-6
Electronic_ISBN :
1930-8833
DOI :
10.1109/ESSCIRC.2012.6341287
