Presentation 2004/1/16
Improvement of Clock Scheduling Method in Consideration of Clock Tree Length
Hajime YAMAZAKI, Atsushi TAKAHASHI,
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Abstract(in English) In order to achieve a shorter clock period by a clock tree with less wire length and less power consumption, a clustering based clock scheduling algorithm was proposed. In the algorithm, first registers are partitioned into clusters by their locations, and then clusters are modified to improve the clock period by changing the cluster to which a critical register belongs. However, in the modification of clusters, excessive modifications are carried out because critcal registers which break cycle are not identified well. In this paper, we propose a method that reduces the number of modification by identifying critical register. Critical registers are identified by extracting non trivial strongly connected components of critical constraint graph. In experiments, the validity of the enhancement is confirmed.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) semi-synchronous circuit / clock-tree / clock schedule / cluster / critical cycle
Paper # VLD2003-126,CPSY2003-35
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Committee VLD
Conference Date 2004/1/16(1days)
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Registration To VLSI Design Technologies (VLD)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Improvement of Clock Scheduling Method in Consideration of Clock Tree Length
Sub Title (in English)
Keyword(1) semi-synchronous circuit
Keyword(2) clock-tree
Keyword(3) clock schedule
Keyword(4) cluster
Keyword(5) critical cycle
1st Author's Name Hajime YAMAZAKI
1st Author's Affiliation Department of Communications and Integrated Systems, Tokyo Institute of Technology()
2nd Author's Name Atsushi TAKAHASHI
2nd Author's Affiliation Department of Communications and Integrated Systems, Tokyo Institute of Technology
Date 2004/1/16
Paper # VLD2003-126,CPSY2003-35
Volume (vol) vol.103
Number (no) 579
Page pp.pp.-
#Pages 6
Date of Issue