【正文】 15 3. Board Design(Cont.) Power divide 16 4. Importing Logic Information into Allegro Layout Process Bring the schematic data Import logic information Concept Logic Import Capture Logic import ThirdParty Logic Import 17 4. Importing Logic Information into Allegro(Cont.) Layout Process 18 4. Importing Logic Information into Allegro(Cont.) Bring schematic data from the Concept tool, Capture tool, or a thirdparty frontend tool. Set up and import logic information into Allegro from one of the these three schematic environments: ?? ConceptHDL ?? Capture ?? Thirdparty 19 4. Importing Logic Information into Allegro(Cont.) Concept Logic Import 20 4. Importing Logic Information into Allegro(Cont.) Capture Logic import 21 4. Importing Logic Information into Allegro(Cont.) ThirdParty Logic Import 22 4. Importing Logic Information into Allegro(Cont.) 23 Design Constraints 24 Design Constraints(Cont.) There are four types of design rules: Spacing Rule Set: Clearances between lines, pads, vias, and copper areas (shapes) Physical Rule Set: Line width and layer restrictions Design Const