TY - GEN
T1 - An efficient Hamiltonian-cycle power-switch routing for MTCMOS designs
AU - Wang, Yi Ming
AU - Chen, Shi Hao
AU - Chao, Chia-Tso
PY - 2012/4/26
Y1 - 2012/4/26
N2 - Multi-threshold CMOS (MTCMOS) is currently the most popular methodology in industry for implementing a power gating design, which can effectively reduce the leakage power by turning off inactive circuit domains. However, large peak current may be consumed in a power-gated domain during its sleep-to-active mode transition. As a result, major IC foundries recommend turning on power switches one by one to reduce the peak current during the mode transition, which requires a Hamiltonian-cycle routing to serially connect all the power switches. In this paper, we propose an efficient power-switch routing framework, which can effectively and efficiently find a feasible Hamiltonian-cycle routing among power switches without violating the Manhattan distance constraint between any two power switches while handling the irregular placement of the power switches resulting from the hard macros. The proposed framework is compliant to commercial APR tools and has been used in a major design-service company for taping out complex MTCMOS designs.
AB - Multi-threshold CMOS (MTCMOS) is currently the most popular methodology in industry for implementing a power gating design, which can effectively reduce the leakage power by turning off inactive circuit domains. However, large peak current may be consumed in a power-gated domain during its sleep-to-active mode transition. As a result, major IC foundries recommend turning on power switches one by one to reduce the peak current during the mode transition, which requires a Hamiltonian-cycle routing to serially connect all the power switches. In this paper, we propose an efficient power-switch routing framework, which can effectively and efficiently find a feasible Hamiltonian-cycle routing among power switches without violating the Manhattan distance constraint between any two power switches while handling the irregular placement of the power switches resulting from the hard macros. The proposed framework is compliant to commercial APR tools and has been used in a major design-service company for taping out complex MTCMOS designs.
UR - http://www.scopus.com/inward/record.url?scp=84859957243&partnerID=8YFLogxK
U2 - 10.1109/ASPDAC.2012.6165026
DO - 10.1109/ASPDAC.2012.6165026
M3 - Conference contribution
AN - SCOPUS:84859957243
SN - 9781467307727
T3 - Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC
SP - 59
EP - 65
BT - ASP-DAC 2012 - 17th Asia and South Pacific Design Automation Conference
T2 - 17th Asia and South Pacific Design Automation Conference, ASP-DAC 2012
Y2 - 30 January 2012 through 2 February 2012
ER -