Name
Abstract | ||
|---|---|---|
In recent fabrication technologies, buffered clock distribution networks have become increasingly popular due to increasing on-chip wiring delays. Traditionally, clock distribution networks has been optimized to minimize end-to-end skew of the distribution network. However, since most ICs have an on-chip PLL, we argue that the design goal of minimizing end-to-end jitter is more relevant. In this paper, we present a dynamic programming based approach to synthesize a minimum cost buffered H-tree clock distribution network. Our cost functions are a weighted sum of power and jitter, and a weighted sum of power and end-to-end delay of the distribution network. Our approach is based on precharacterizing the delay, jitter and power of buffered segments of different lengths, topologies, buffer sizes and wire-codes. Using this information, a dynamic programming (DP) engine automatically generates the optimal H-tree that minimizes the appropriate cost function. Compared to a manually constructed buffered H-tree network, our approaches are able to reduce both jitter (by as much as 28%, and power by as much as 46%. When optimizing for minimum jitter, the DP engine generates a H-tree with lower jitter than when optimizing for minimum delay, thereby validating our approach, and proving its usefulness. |
Year | DOI | Venue |
|---|---|---|
2011 | 10.1109/VLSID.2011.69 | VLSI Design |
Keywords | Field | DocType |
minimum jitter buffered h-tree,minimum jitter,h-tree network,automated approach,h-tree clock distribution network,clock distribution network,buffered clock distribution network,weighted sum,distribution network,lower jitter,end-to-end jitter,dynamic programming,phase locked loops,jitter,cost function,end to end delay,engines,chip | Dynamic programming,Phase-locked loop,Computer science,Distribution networks,Electronic engineering,Network topology,Real-time computing,Skew,Jitter,H tree | Conference |
ISSN | ISBN | Citations |
1063-9667 E-ISBN : 978-0-7695-4348-2 | 978-0-7695-4348-2 | 1 |
PageRank | References | Authors |
0.40 | 7 | 5 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Ayan Mandal | 1 | 14 | 3.53 |
| Nikhil Jayakumar | 2 | 215 | 20.42 |
| Kalyana C. Bollapalli | 3 | 7 | 2.41 |
| Sunil P. Khatri | 4 | 1213 | 137.09 |
| Rabi N. Mahapatra | 5 | 463 | 44.06 |