Design of Low-Power and Low-Latency 256-Radix Crossbar Switch Using Hyper-X Network Topology

• DOI: 10.5573/jsts.2015.15.1.077
• Publication Date: 2015-03-23T07:11:48Z
• Authors: Seung-Heon Baek; Sung-Youb Jung; Jaeha Kim
• Keywords: Crossover switch; Radix (gastropod)

This paper presents the design of a low-power, low area 256-radix 16-bit crossbar switch employing 2D Hyper-X network topology. The realizes high radix 256 by hierarchically combining set 4-radix sub-switches and applies three modifications to basic topology in order mitigate adverse scaling power consumption propagation delay with increasing radix. For instance, restricting directions which signals can be routed, ports connected, replacing column-wise routes diagonal routes, fanout each circuit node substantially reduced from 4~8. proposed 256-radix, is designed 65 ㎚ CMOS occupies total 0.93×1.25 ㎟. simulated worst-case dissipation are 641 ps 13.01 W when operating at 1.2 V supply 1 ㎓ frequency. In comparison state-of-the-art designs, achieves best energy-delay efficiency 2.203 cycle/ns?fJ?λ².