An Introduction to Synopsys Design Automation.ppt

1、An Introduction to Synopsys Design Automation,Jeremy Lee jsleeengr.uconn.edu November 7, 2007,Introduction,Why the need CAD tools? Time to market decreasing ( a year) Designs are becoming more complex (System-on-a-chip)Synopsys is one of many EDA vendors vying for designer mind-share,Introduction (c

2、ont.),Why do we (in academia) need CAD tools? Keep our research relevant to industry Know what needs improving (academia on cutting edge),What will be covered?,Overview of tools Whats available? What do the tools do? Example FlowWill not be a step-by-step how-to.,Getting Synopsys Started at UConn,Sy

3、nopsys Linux binaries are available on the ECS fileserver:/apps/ecs-apps/software/synopsys Releases: Y-2006, Z-2007 bashrc and cshrc files located at/apps/ecs-apps/software/synopsys/etc Synopsys directory can be mounted directly using NFS files:/ApplicationDirectories/nfs/ecs-apps/software/synopsys

4、Tools are location dependent Must be in same directory structure as on server Gui or console modes,Synopsys Galaxy Platform at UConn (Y-2006),Design Compiler JupiterXT Astro Physical Compiler,Design Automation,PrimeTime SI/PX/VX PrimePower Star-RCXT Formality VCS Nanosim HSpice,Sign-off / Validation

5、 / Verification,DFT Compiler DFT MAX TetraMAX,Design for Test,Design Automation,Design Compiler RTL to gate-level synthesis Physical Compiler Layout-aware RTL to gate-level synthesis JupiterXT Floorplanning tool Astro Placement and routing,Design Compiler (DC),Synthesizes gate level netlists from RT

6、L-level Optimizes netlists Removes unused or redundant logic Tie-off nets that are constant Requires standard cell library timing characterization Attempts to meet timing and area constraints (SDC File),Libraries,Supposed to be provided by fab Gates in standard cell library Operating condition corne

7、rs Gate delays Wire load models Compensates delay for fan-out,SDC File,Synopsys Design Constraints (SDC) Set up clock period Specifies timing and area requirements that are to be met during mapping and optimization,SDC Constraints,Input Delay,Output Delay,Driving Cell,Load,DC Flow,Read Netlist,Map t

8、o Link Library (if gate-level),Apply Constraints,Netlist,Write-out Optimized Netlist,SDC Cons.,Map to Target Library and Optimize,Read Libraries,Libraries,JupiterXT,Floorplanning Power/Ground Network Planning Pin/Power pad placement Blockages Memory placement Performed through GUI or command line,As

9、tro,Placement and routing tool Requires physical information of standard cell library (provided by fab) Graphic Data System (GDSII) Library Exchange Format (LEF) Physical design in multiple formats GSDII Design Exchange Format (DEF),Astro Flow,Import Netlist and Constraints,Netlist,Open Libraries,Li

10、braries,Read/Setup Floorplan,Run Placement,Routing,Physical Design,SDC Cons.,Synopsys Galaxy Platform at UConn (Y-2006),Design Compiler JupiterXT Astro Physical Compiler,Design Automation,PrimeTime SI/PX/VX PrimePower Star-RCXT Formality VCS Nanosim HSpice,Sign-off / Validation / Verification,DFT Co

11、mpiler DFT MAX TetraMAX,Design for Test,Sign-off/Validation/Verification,Formality Verify netlist PrimeTime SI/PX/VX Timing validation (signal-integrity, power-aware, variation-aware) PrimePower Power validation,Sign-off/Validation/Verification (cont.),Star-RCXT Extraction tool VCS HDL simulator Nan

12、oSim HDL simulator w/ parasitics HSpice Spice simulator,PrimeTime SI/PX/VX (PT-SI/PX/VX),Calculates and reports path delays Verify operating frequency after logic synthesis Can be back-annotated with extracted parasitics for post-layout verification,PT-SI/PX/VX Flow,Read Netlist,Map to Link Library

13、if gate-level),Apply Constraints,Netlist,SDC Cons.,Read Libraries,Libraries,Back-annotate design,Report Timing results,Meet spec?,ECO,Next phase,Yes,No,Parasitics,Process Variation,*New*,Putting the Pieces Together,RTL Netlist,SDC Cons.,Logic Synthesis,Gate Netlist,Logic Libraries,Sign-off,Fails,Pa

14、sses,Physical Synthesis,Physical Libraries,Layout,Extraction,Sign-off,Fails,Passes,To Fab,Synopsys Galaxy Platform at UConn (Y-2006),Design Compiler JupiterXT Astro Physical Compiler,Design Automation,PrimeTime SI/PX/VX PrimePower Star-RCXT Formality VCS Nanosim HSpice,Sign-off / Validation / Verifi

15、cation,DFT Compiler DFT MAX TetraMAX,Design for Test,Design for Test,DFT Compiler Scan chain insertion DFT Max Test compression tool TetraMax Automatic test pattern generation (ATPG),Additional Reading,Synopsys Website Documentation Synopsys OnLine Documenation (SOLD) Available on any of the UConn ECS Linux servers Electronic Synopsys Users Group (ESNUG) ,