Abstract
In this paper, we present a fast and accurate delay estimation method for buffered interconnects. The interconnect wire is modeled by the transmission line model which is more accurate and efficient than lumped circuit model. For the interconnect wire, we specify the wire shape to be of the form f(x) = ae-bx. Note that if we let b = 0, our work is reduced to uniform wire case. By using first three poles in the transfer function, we derive analytical expressions for calculating delay at any threshold voltage under a finite ramp input. The expressions involved in calculating coefficients in the transfer function are also analytical. We use k-factor equations to estimate delays for buffers. Since the k-factor equations require a loading capacitance for delay computation, we use the effective capacitance technique introduced in [17] to calculate the effective capacitance for each interconnect wire which is connected to a buffer. Therefore, our delay calculation for buffered interconnects is analytical and thus very efficient. Our experiments show that signal waveforms estimated by our method are very close to SPICE's results.
Original language | English |
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Title of host publication | Proceedings of The 6th Asia and South Pacific Design Automation Conference, ASP-DAC 2001 |
Place of Publication | United States |
Publisher | Association for Computing Machinery (ACM) |
Pages | 533-538 |
Number of pages | 6 |
ISBN (Print) | 9780780366343 |
DOIs | |
Publication status | Published - Jan 2001 |
Event | 6th Asia and South Pacific Design Automation Conference, ASP-DAC 2001 - Conference Center, Pacifico Yokohama, Yokohama, Japan Duration: 30 Jan 2001 → 2 Feb 2001 https://www.aspdac.com/2001/ (Conference website ) https://www.aspdac.com/2001/eng/ap/techprg2001.pdf (Conference program) https://dl.acm.org/doi/proceedings/10.1145/370155 (Conference proceedings) |
Publication series
Name | Proceedings of The Asia and South Pacific Design Automation Conference, ASP-DAC |
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ISSN (Print) | 2153-6961 |
ISSN (Electronic) | 2153-697X |
Conference
Conference | 6th Asia and South Pacific Design Automation Conference, ASP-DAC 2001 |
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Country/Territory | Japan |
City | Yokohama |
Period | 30/01/01 → 2/02/01 |
Internet address |
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