Chapter5 Virtuoso

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Chapter 5Virtuoso Layout Editor


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68 CHAPTER 5: Virtuoso Layout Editor

Figure 5.1: Inverter schematic

Figure 5.2: Inverter symbol


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(Copyright c2005, 2010, Cadence Design Systems, Inc. All rights reserved worldwide. Reprinted with permission.)

Figure 5.3: Dialog for creating a Layout View of the inverter cell

Figure 5.4: Initial nactive rectangle


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Figure 5.5: nactive rectangle with measurement rulers


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Figure 5.6: Create contact dialog box


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Figure 5.7: nactive showing source and drain connections

Figure 5.8: Nmos transistor 3 wide and 0.6 long


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Figure 5.9: A pmos transistor 6 wide and 0.6 long


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Figure 5.10: A pmos transistor inside of an NWELL region


Figure 5.11: Extra features dialog box in move mode


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Figure 5.12: Dialog box for the path command


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Figure 5.13: Inverter layout with input and output connections made


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Figure 5.14: Inverter layout with power supply connections


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Figure 5.15: Inverter layout with well and substrate connections


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Figure 5.16: Shape pin dialog box


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Figure 5.17: Final inverter layout


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Figure 5.18: Layout with four inverter instances


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Figure 5.19: Layout with four inverter instances expanded to see all levels of layout


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Figure 5.20: Submit Plot dialog box


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Figure 5.21: Plot Options dialog box

Figure 5.22: Nmos transistor layout (with DRC errors)


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Figure 5.23: DIVA DRC control window


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Figure 5.24: Results from the DRC in the CIW window

Figure 5.25: Nmos transistor layout (with DRC errors flagged)


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Figure 5.26: Explanation of DRC violation


Figure 5.27: Finding all DRC violations


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Figure 5.28: DIVA extraction control window


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Figure 5.29: DIVA extraction special switches


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Figure 5.30: DIVA extraction result in the CIW


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Figure 5.31: Extracted view of the inverter


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Figure 5.32: DIVA LVS control window


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Figure 5.33: DIVA LVS Control Form


Figure 5.34: NCSU form to modify LVS rules


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Figure 5.35: DIVA LVS completion indication


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Figure 5.36: DIVA LVS output


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Figure 5.37: DIVA LVS output (scrolled)


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Figure 5.38: DIVA LVS Run Information window


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Chapter5 Virtuoso

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