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Synergies in IC Design: PDKs and DFM Standards Working
Together
Sumit DasguptaSr. Vice President, Engineering Silicon Integration Initiative (Si2)
Email: [email protected]
June 06, 2011
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Agenda• 08:30 AM - 09:00AM: Registration & Breakfast
• 09:00 AM - 09:10AM Welcome and Intro: Sumit DasGupta, Si2
• 09:10AM - 09:35PM: OPDK Coalition Overview: Robert Hum, Mentor
• 09:35AM - 10:00AM: Open Process Spec Progress: Gilles Namur, ST
• 10:00AM - 10:25AM: Symbols, CDF, and Callback Progress: Rich Morse, Springsoft
• 10:25AM – 10:45AM: Break
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Agenda• 10:45AM - 11:10AM: 2011 OpenDFM Overview, A Customer
Perspective: Fred Valente, TI
• 11:10AM - 11:35AM: Targeting and Litho Bias, Bob Sayah, IBM
• 11:35AM - 12:00PM: Parasitic Extraction Standards and Design for Variability, Concetta Riccobene, LSI
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Pre-OpenPDK Flow
Foundry Data
CDF descCallbacksSymbols
OA Tech FileDRC/LVSLPE/PEX
SPICE netlistTargeting
Test Harness
Pcellcode
IPLIPL
Flow A
Flow B
Flow C
Flow D
PDK Use Flows
Vndr C
Effort
Vndr B
Vndr A
IPL
Effort
Vndr AEffort
Effort
Effort
Vndr DEffort
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Full OpenPDK Flow
Foundry Data
OPS
Pcellcode
Effort
Gen
erate Flow A
Flow B
Flow C
Flow D
Vndr A
IPL
Vndr D
Vndr C
Vndr B
PDK Use FlowsCDF descCallbacks
Enh. SymbolsOA Tech FileDRC/DFM/LVS
LPE/PEXSPICE netlistTargeting
Test Harness
Effort
Effort
(Note: Enhanced OA symbols available to members only)= Unique value added by OpenPDK members
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Vision: OpenPDK Development Flows
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Open Process Spec. : Design Technology Representation (Open Language Based)
New standardization work
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Existing Input Data Formats
OA API
OA DB
PDK Dev. Flow2
PDK Dev. Flow3
PDK Dev. Flown
SPICE Socket
SPICE EngineSPICE EngineSPICE EngineSPICE Engine
SPICE EngineSPICE EngineSPICE EngineDRC/LVS Engine
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OA Tech. File Enh.OpenDFM w/ Targeting
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Synergies Between Coalitions• UML diagrams generated by OPDKC provide consistent,
comprehensive & structured approach to handling the large amount of interrelated data in PDK’s
• Class diagrams of UML model used by DFMC as blueprint for layers used by DFM checks and targeting optimizations
• OPDKC defining structure of technology “Data Repository”, OPEX to use it to store process parameters, OA apps can access above data through Scripting Language Interface on OpenAccess
• XML, using XSD constraints, was chosen as the common data format between the OPDK and DFMC working groups
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In Conclusion…
• For more information– If interested, please contact Bob Carver (phone: 512-801-4350,
email: [email protected]) for membership details
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Thank You and Enjoy the Workshop
Sumit DasguptaSr. Vice President, Engineering Silicon Integration Initiative (Si2)
Email: [email protected]
June 06, 2011
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Current OpenPDK Scope
• Stakeholder-specified requirements:– Interoperable symbols
– Open Process Specification (using UML as formal vocabulary and relationship structure) containing:
• Device parameter specifications
• OA Technology File enhancements
• DRC/LVS/PEX
– Callback Specifications
– SPICE parameters passed with net-lists
– XML-based formal syntax for output to automated PDK generation tools
Items under current focus
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Pre-OpenPDK Flow
Foundry Data
CDF descCallbacksSymbols
OA Tech FileDRC/LVSLPE/PEX
SPICE netlistTargeting
Test Harness
Pcellcode
Flow A
Flow B
Flow C
Flow D
PDK Use Flows
Vndr C
Effort
Vndr B
Vndr AEffort
Effort
Effort
Vndr DEffort
Effort
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Open Process Spec. : Design Technology Representation (Open Language Based)
New standardization work
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Existing Input Data Formats
OA API
OA DB
PDK Dev. Flow2
PDK Dev. Flow3
PDK Dev. Flown
SPICE Socket
SPICE EngineSPICE EngineSPICE EngineSPICE Engine
SPICE EngineSPICE EngineSPICE EngineDRC/LVS Engine
User
Foundry
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PDK Dev. Flow1
OA Tech. File Enh.OpenDFM w/ Targeting
Vision: OpenPDK Development Flows
OPS WG
SCC WG
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Open Process Spec. WG (OPS WG)
• Goals:– Develop industry–standard specifications for representing
process information for electrical definition of Process Design Kits
• Scope of proposed standards includes:– Technology layers– Tool-specific layers– Technology constraints– Design rules– DFM/DFY rules– Electrical parameters, e.g., dielectric coefficients – Process parameters– Device specifications– Design Kit test harness,…
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Symbols, CDF Parameter & Callbacks WG (SCC WG)
• Goals:– Develop device parameter & callback standard specifications – Augment Si2 Symbol Library with additional symbols, parameters
and properties– Define standard representation for parameters to be passed with
SPICE netlists
• Scope of proposed standards includes:– Develop specification for device parameters (a la “CDF”) – Define semantics for parameter and attribute keywords – Current parameters used commonly in PDKs should be easily
captured by new specification – Develop specification for CDF callback mechanism – Define symbols to add to the current set of Si2 standard symbols – Define OpenAccess specifications for CDF as an interoperability
goal
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Accessing OPEX Process Parameters
OpenAccess APIC++
Programming Interface
EDA Programmer Centric
Tcl API
Type Mapping
Ruby API
Type Mapping
Perl API
Type Mapping
Python API
Type Mapping Common Wrapper Architecture Interface
Language‐Specific Bindings
Common SWIG Framework
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Type Mapping
C# API
XML FileYAML FileSQLite Database
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Status• OPS WG:
– Received 58 page example Open Process Spec from ST Micro– 1st pass draft specs for TSG evaluation: Target 09/2011– OPS Adopter Kit under active evaluation / discussion– DAC demo preparation underway
• SCC WG:– Created 4 parallel sub-groups to drive faster progress
• Symbols, Parameters, SPICE Netlist Parameters, Callbacks– Received contribution of 21 new symbols from SpringSoft– 1st pass draft specs for TSG evaluation: Target 09/2011
• DFMC OpenDFM 1.1:– OpenDFM Spec posted on Si2 front page for public distribution
OpenDFM parser, test cases posted for DFMC members only– Reviewing incompatible OPEX parameters with contributors
