Accurate and Accurate and Efficient SSN Modeling

More documents

Recommendations

Info

Nearest Neighbors 1. Identify Victim <strong>and</strong> nearest neighbors i hb bbased d on proximity i it 2. Extract largest segment you can afford with available hardware 3. Attached Driver models to each signal pin Well placed PWR/GND balls limit return path loop area High g Speed p Packages generally have banks-easy to segment O15 Load Load GND Load Load SPY SPY O15 Load Load Load GND Load Load O25 Load Load GND clko clko Load Load O25 GND Load GND Load Load O15 Load Load Load GND Load O25 Load Load Load GND Load Load O25 Load Load Load GND Load Load Load Load GND GND Load Load Load O15 Load Load Load GND Load Load Load Load GND Load Load O25 Load Load Load GND clko clko Load Load O25 Load Load Load Load Load Load O15 Load Load GND Load Load Load O15 Load Load Load GND Load O25 SPY Load GND Load Load Load O25 Load Load Load Load Load Load Load O15 Load Load Load Load Load Load Load O25 SPY Load Load Load O25 Load Load Load GND Load GND Load GND Load Load Load Load Load AUX Load Load GND Load Load O25 clki AUX Load Load Load Load O25 Load Load Load GND Load Load GND O15 Load Load Load GND Load Load Load Load O15 Load Load GND Load Load Load Load O25 Load Load clki GND INT INT O25 Load AUX Load Load Load Load Load O25 Load Load GND O15 Load Load Load GND Load Load Load O15 Load Load Load SPY GND Load Load Load Load Load Load GND Load Load VDO Load Load Load Load O25 AUX Load GND Load Load Load Load O15 AUX INT GND Load SPY INT O25 Load Load INT GND Load Load INT O25 clko Load Load GND clko Load Load O15 Load INT Load GND GND INT Load O25 Load Load GND INT GND INT Load O25 Load Load Load Load GDO Load Load SPY Load Load INT Load Load O15 Load Load Load GND Load INT GND INT GND Load Load GND Load Load INT GND INT GND AUX Load Load GND Load Load Load O25 SPY Load Load Load Load Load Load SPY Load Load AUX GND INT GND INT Load Load O25 Load INT GND INT GND Load Load Load O25 Load Load Load GND GND O15 clki Load GND Load O15 SPY AUX Load Load GND Load INT clki O25 Load Load Load Load GND Load Load INT Load O25 INT Load Load GND Load Load GND Load Load Load Load INT GND INT GND INT Load O25 Load AUX Load Load GND Load O15 Load INT GND GND INT GND AUX GND O25 Load Load GND GND O15 INT Load Load AUX Load Load GND INT GND INT GND O25 GND INT GND INT GND GND GND O25 GND AUX GND VDI GDI INT GND INT GND INT GND VDA GND GND GND O25 GND GND INT GND O25 GND INT GND AUX GND GND INT INT GND Load Load Load O33 Load AUX GND INT GND INT GND INT Load O25 GND GND Load Load GND AUX Load O33 Load INT GND INT GND INT O25 Load Load Load Load GND Load Load Load GND Load INT Load Load INT Load Load Load Load clki O25 GND Load Load GND Load Load AUX O25 GND Load Load O33 GND INT Load GND Load O33 Load Load Load GND GND INT Load O25 Load INT clki INT GND INT GND AUX O25 Load Load Load Load GND Load Load INT Load GND Load Load SPY Load O33 Load Load Load Load AUX GND INT GND INT Load Load GND Load Load GND INT GND Load GND Load Load Load Load O25 Load GND INT SPY Load Load Load GND Load Load Load O33 Load INT GND INT GND Load Load Load O25 Load INT GND INT GND Load INT Load O25 Load clko Load clko Load GND Load Load Load O33 INT Load GND INT Load Load SPY O25 Load Load Load GND INT Load AUX O25 Load Load GND Load Load Load Load GND INT Load AUX Load O25 Load SPY Load Load GND SPY Load Load Load O25 Load Load Load Load Load O25 O33 Load Load Load GND Load Load Load Load Load AUX O33 Load INT Load INT GND clki Load Load SPY O25 Load Load GND Load Load Load Load O25 Load Load Load O33 Load GND Load Load Load Load Load O33 Load Load GND Load Load AUX clki O25 Load Load Load Load AUX Load O25 Load Load Load GND GND Load Load GND Load Load Load Load O33 Load Load Load GND Load Load Load O25 Load Load Load GND Load Load Load O25 Load Load Load Load GND Load O33 Load Load Load GND Load Load O33 Load Load Load Load GND Load Load O25 Load Load Load Load Load Load Load Load Load Load Load Load Load GND Load O25 Load Load GND Load Load O33 Load Load Load GND Load Load Load O25 Load Load Load Load GND Load Load Load Load Load Load Load GND Load O25 GND Load Load Load Load Load GND Load O25 GND GND GND Load Load Load Load O25 Load Load Load Load GND GND O33 Load Load Load Load O33 Load Load Load GND Load Load O33 Load GND clko clko O25 SPY SPY Load Load GND Load Load O25 GND Load Load Load Load
Nearest Neighbor Tradeoffs � Most accurate <strong>and</strong> flexible method � Simulates Skew/Delay between lines � All Allows diff different t ddata t patterns tt � Long transient simulation � Potential for convergence trouble
Page 1 and 2: Accurate and Efficient SSN Modeling
Page 3 and 4: What is SSN? � Simultaneous Switc
Page 5 and 6: Ground/Power Bounce Ref: BGA Crosst
Page 7 and 8: Model Types � Need to include all
Page 9 and 10: Driver Models � Need to accuratel
Page 11 and 12: PCB Model � Extract individual Si
Page 13: Modeling Techniques � Kitchen Sin
Page 17 and 18: Signal Grouping Tradeoffs � Much
Page 19 and 20: Current Mirroring Tradeoffs � Muc
Page 21 and 22: S-parameter S parameter Handling St
Page 23 and 24: Choose port impedances p that are r
Page 25 and 26: Schematic Setup � Schematic setup
Page 27 and 28: Stand Stand-alone alone GUI to setu
Page 29 and 30: SIwizard in v4.0 SIwave 11. Select
Page 31: Current Mirroring � Place drivers

Accurate and Accurate and Efficient SSN Modeling

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?