Title :
A low-power high-radix switch fabric based on low-swing signaling and partially-activated input lines
Author :
Dogyoon Song ; Jaeha Kim
Author_Institution :
Dept. of Electr. & Comput. Eng., Seoul Nat. Univ., Seoul, South Korea
Abstract :
Increasing power density of CMOS ICs and growing complexity of network-on-chips (NoCs) call for energy-efficient, high-radix crossbar switches. This paper demonstrates a design of radix-64 crossbar switch adopting SRAM circuit techniques: low-swing signaling on the bitline and pulse width control on the wordline. By reducing the voltage swing on the high-capacitance wires, both the power and speed can be significantly improved compared to those of a basic matrix-type implementation. The detailed circuit analysis and simulation considering the physical constraints such as wire loading shows that a prototype crossbar switch designed in 45nm CMOS can operate at 2-GHz with 34-FO4 latency and 55.6-fJ/cycle energy efficiency.
Keywords :
CMOS integrated circuits; SRAM chips; field programmable gate arrays; integrated circuit design; low-power electronics; network-on-chip; CMOS integrated circuits; NoC; SRAM circuit; field programmable gate arrays; frequency 2 GHz; low-power high-radix switch fabric; low-swing signaling; network-on-chip; partially activated input lines; power density; pulse width control; radix-64 crossbar switch; size 45 nm; voltage swing; wire loading; Delays; Rails; Random access memory; Repeaters; Switches; Switching circuits; Wires; SRAM; high-radix crossbar switch; low-swing signaling; network-on-chips;
Conference_Titel :
VLSI Design, Automation, and Test (VLSI-DAT), 2013 International Symposium on
Conference_Location :
Hsinchu
Print_ISBN :
978-1-4673-4435-7
DOI :
10.1109/VLDI-DAT.2013.6533825
