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Special Layer Information |
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Another piece of information that can be determined once the layers have been defined is the design rules. Use the Edit Design Rules command of the Technology menu to see them. This command displays a text editing window for the creation or modification of design rules. Each line in the window is a single spacing rule between two layers. The first field is the distance, followed by the two layer names, all separated by spaces. For example, the line "2.5 metal metal" establishes a 2.5 lambda minimum spacing between unconnected layers of metal. To specify the spacing for connected layers, put the letter "c" before the spacing (e.g. "c1 poly diff" will force a minimum 1 lambda space between electrically connected polysilicon and diffusion layers). More information on text editing can be found in the "Text Windows" section of Chapter 4.
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