IC WorkBench Edit/View Plus 

High Speed Layout Visualization 

Overview
IC WorkBench Edit/View Plus (ICWBEV+) is a powerful, hierarchical layout visualization and analysis tool. It allows viewing and editing GDSII and OASIS layouts from small IP blocks to full chip databases. ICWBEV+:

  • Quickly opens large GDSII and OASIS files with low memory overhead, and cache files drastically decrease the time for subsequent sessions
  • Provides easy debugging of the hierarchy and placement of cells and shapes
  • Shows fast, interactive shape connectivity
  • Supports the IC Validator (VUE) application to review and correct DRC and LVS errors
  • Defines TCAD simulation domains in hierarchical layouts for Sentaurus

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Figure 1: Hierarchical selection and editing in ICWBEV+
Figure 1: Hierarchical selection and editing in ICWBEV+

High Speed, High Capacity View and Editing
ICWBEV+ loads gigabytes of data in minutes and has unlimited file size capacity on 64-bit platforms. Fast zooming and panning ease exploration and analysis of the largest layout patterns. In addition, ICWBEV+ can overlay two or more layouts in a single view without merging the underlying layout files. Hierarchical selection and editing allow ICWBEV+ to select and edit shapes deep in the hierarchy without requiring the sub-cell to be opened as shown in Figure 1. Edit operations have undo and redo support.

Figure 2: Shape information tool tip and probe showing the hierarchy of layout shapes
Figure 2: Shape information tool tip and probe showing the hierarchy of layout shapes

Hierarchy Debug
Debugging layouts and their hierarchy is critical for the final design of large chips and ICWBEV+ provides a number of tools to do this as shown in Figure 2.

  • Control of the levels of hierarchy shown: ICWBEV+ can be configured to show any level(s) of the hierarchy, allowing better determination of the source of shapes
  • Shape information tool tip: ICWBEV+ includes a shape information tool tip to allow quick determination of the hierarchy of shapes and cells
  • Probe: ICWBEV+ allows more detailed information of the hierarchy in a location including the cell placement information

Advanced Features
ICWBEV+ implements the latest in user interface technology, and is architected to make the powerful ICWBEV+ capabilities easy and intuitive to use. Key features include:

  • Net tracing – ICWBEV+ can trace touching shapes based on a user defined connectivity list. This allows a quick check of opens/shorts in a layout
  • Support for user and site level customization
  • Hierarchical folder representation of all objects including layouts, rulers, and other markups, such as SEM images
  • Browser-like forward and back view history
  • User customizable hot keys for menus and commands
  • User customizable window and toolbar positions
  • Custom buttons to run user-created macros

Common Platform and User Modes
ICWBEV+ is built on the same code base as the IC WorkBench Plus product, but without the lithographic simulation. All lithography markup types are available for review in ICWBEV+. ICWBEV+ has user modes for different users including:

  • IC Validator: default set up and connections to IC Validator VUE through a single toolbar button
  • Sentaurus: Additional markups to support TCAD simulations, including stretch, and toolbar buttons to generate simulation domain information for Sentaurus
Interfaces
  • Inputs and Outputs
    • GDSII
    • OASIS
  • User Interfaces
    • GUI-based user interface
    • TCL-based user interface with TK widgets available
    • Socket communication
  • Supported platforms
    • AMD64, Linux 32, Sparc64, Suse 32, Suse 64