Title
On-chip bus thermal analysis and optimisation
Abstract
As technology scales, increasing clock rates, decreasing interconnect pitch and the introduction of low-k dielectrics have made self-heating of the global interconnects an important issue in VLSI design. Further, high bus temperatures have had a negative impact on the delay and reliability of on-chip interconnects. Energy and thermal models are used to characterise the effects of self-heating on the temperature of on-chip interconnects. The results obtained show that self-heating of on-chip buses contribute significantly to the temperature of the bus, which increases as technology scales, motivating the need to find solutions to mitigate this effect. The theoretical analysis performed shows that spreading switching activities among all bus lines can effectively reduce the peak temperature of the on-chip bus. Based on this observation, a thermal spreading encoding scheme for on-chip buses is proposed to tackle the thermal issue. The results obtained show that this approach is very effective in reducing the transient peak temperature among bus lines, with much less overhead compared with other low-power encoding schemes. This technique can then be combined with low-power encoding schemes to further reduce the on-chip bus temperature.
Year
DOI
Venue
2007
10.1049/iet-cdt:20060116
Computers & Digital Techniques, IET
Keywords
DocType
Volume
VLSI,circuit optimisation,integrated circuit design,integrated circuit interconnections,thermal analysis,VLSI design,energy models,interconnect pitch,low-k dielectrics,on-chip bus optimisation,on-chip bus thermal analysis,thermal models,thermal spreading encoding scheme,transient peak temperature
Journal
1
Issue
ISSN
Citations 
5
1751-8601
0
PageRank 
References 
Authors
0.34
14
4
Name
Order
Citations
PageRank
Fei-Yue Wang15273480.21
De Bole, M.200.34
Xiaoxia Wu353538.61
Yuan Xie46430407.00