Physical design methodologies for monolithic 3D ICs

The objective of this research is to develop physical design methodologies for monolithic 3D ICs and use them to evaluate the improvements in the power-performance envelope offered over 2D ICs. In addition, design-for-test (DfT) techniques essential for the adoption of shorter term through-silicon-v...

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Main Author: Panth, Shreepad Amar
Other Authors: Lim, Sung Kyu
Format: Others
Language:en_US
Published: Georgia Institute of Technology 2015
Subjects:
Online Access:http://hdl.handle.net/1853/53542
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spelling ndltd-GATECH-oai-smartech.gatech.edu-1853-535422015-06-30T03:39:30ZPhysical design methodologies for monolithic 3D ICsPanth, Shreepad Amar3D ICPhysical designMonolithic inter-tier viaPlacementRoutingThe objective of this research is to develop physical design methodologies for monolithic 3D ICs and use them to evaluate the improvements in the power-performance envelope offered over 2D ICs. In addition, design-for-test (DfT) techniques essential for the adoption of shorter term through-silicon-via (TSV) based 3D ICs are explored. Testing of TSV-based 3D ICs is one of the last challenges facing their commercialization. First, a pre-bond testable 3D scan chain construction technique is developed. Next, a transition-delay-fault test architecture is presented, along with a study on how to mitigate IR-drop. Finally, to facilitate partitioning, a quick and accurate framework for test-TSV estimation is developed. Block-level monolithic 3D ICs will be the first to emerge, as significant IP can be reused. However, no physical design flows exist, and hence a monolithic 3D floorplanning framework is developed. Next, inter-tier performance differences that arise due to the not yet mature fabrication process are investigated and modeled. Finally, an inter-tier performance-difference aware floorplanner is presented, and it is demonstrated that high quality 3D floorplans are achievable even under these inter-tier differences. Monolithic 3D offers sufficient integration density to place individual gates in three dimensions and connect them together. However, no tools or techniques exist that can take advantage of the high integration density offered. Therefore, a gate-level framework that leverages existing 2D ICs tools is presented. This framework also provides congestion modeling and produces results that minimize routing congestion. Next, this framework is extended to commercial 2D IC tools, so that steps such as timing optimization and clock tree synthesis can be applied. Finally, a voltage-drop-aware partitioning technique is presented that can alleviate IR-drop issues, without any impact on the performance or maximum operating temperature of the chip.Georgia Institute of TechnologyLim, Sung Kyu2015-06-08T18:34:54Z2015-06-08T18:34:54Z2015-052015-03-31May 20152015-06-08T18:34:54ZDissertationapplication/pdfhttp://hdl.handle.net/1853/53542en_US
collection NDLTD
language en_US
format Others
sources NDLTD
topic 3D IC
Physical design
Monolithic inter-tier via
Placement
Routing
spellingShingle 3D IC
Physical design
Monolithic inter-tier via
Placement
Routing
Panth, Shreepad Amar
Physical design methodologies for monolithic 3D ICs
description The objective of this research is to develop physical design methodologies for monolithic 3D ICs and use them to evaluate the improvements in the power-performance envelope offered over 2D ICs. In addition, design-for-test (DfT) techniques essential for the adoption of shorter term through-silicon-via (TSV) based 3D ICs are explored. Testing of TSV-based 3D ICs is one of the last challenges facing their commercialization. First, a pre-bond testable 3D scan chain construction technique is developed. Next, a transition-delay-fault test architecture is presented, along with a study on how to mitigate IR-drop. Finally, to facilitate partitioning, a quick and accurate framework for test-TSV estimation is developed. Block-level monolithic 3D ICs will be the first to emerge, as significant IP can be reused. However, no physical design flows exist, and hence a monolithic 3D floorplanning framework is developed. Next, inter-tier performance differences that arise due to the not yet mature fabrication process are investigated and modeled. Finally, an inter-tier performance-difference aware floorplanner is presented, and it is demonstrated that high quality 3D floorplans are achievable even under these inter-tier differences. Monolithic 3D offers sufficient integration density to place individual gates in three dimensions and connect them together. However, no tools or techniques exist that can take advantage of the high integration density offered. Therefore, a gate-level framework that leverages existing 2D ICs tools is presented. This framework also provides congestion modeling and produces results that minimize routing congestion. Next, this framework is extended to commercial 2D IC tools, so that steps such as timing optimization and clock tree synthesis can be applied. Finally, a voltage-drop-aware partitioning technique is presented that can alleviate IR-drop issues, without any impact on the performance or maximum operating temperature of the chip.
author2 Lim, Sung Kyu
author_facet Lim, Sung Kyu
Panth, Shreepad Amar
author Panth, Shreepad Amar
author_sort Panth, Shreepad Amar
title Physical design methodologies for monolithic 3D ICs
title_short Physical design methodologies for monolithic 3D ICs
title_full Physical design methodologies for monolithic 3D ICs
title_fullStr Physical design methodologies for monolithic 3D ICs
title_full_unstemmed Physical design methodologies for monolithic 3D ICs
title_sort physical design methodologies for monolithic 3d ics
publisher Georgia Institute of Technology
publishDate 2015
url http://hdl.handle.net/1853/53542
work_keys_str_mv AT panthshreepadamar physicaldesignmethodologiesformonolithic3dics
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