Issue link: https://resources.pcb.cadence.com/i/1180284
Electrical Design, Mechanical Design Incremental Data Exchange in Allegro PCB Editor October 2019 17 Product Version 17.4-2019 © 1999-2019 All Rights Reserved. Note: Component height (package_height_min/package_height_max) changes passed to Allegro are not applied to the design. The height values are considered to be a library synchronization issue and must be addressed at the library level. Board Outline The board geometry should be a contiguous or closed polygon (BOARD GEOMETRY/ OUTLINE). When exporting the board outline, the board thickness value defined in the cross section is exported. Other board geometry, such as cut-outs or non-circular drilled holes may be exported as outline geometry. Board cross-section and cavity definitions are not exported. Keep-in Areas The maximum extents for component placement and conductors are defined through Allegro PACKAGE KEEPIN/ALL, and ROUTE KEEPIN/ALL geometries. Only one of each may be defined. Keep-Out Areas Regions that define exclusion or restricted areas are defined by a combination of geometry definitions and properties. Component keep-out areas are defined by a geometry figures on Allegro drawing class PACKAGE KEEPOUT, and limited to subclasses TOP, BOTTOM, ALL. With no height property associated with these, object assumes no component may be placed within the defined boundary. To set height restrictions see Height Restriction Management. Restriction areas for conductor are defined by geometries in the Allegro drawing class ROUTE KEEPOUT, and limited to subclasses TOP, BOTTOM, ALL. Any exported route keep- out area defined on any other subclass may be exported as subclass ALL. Electrical Component Passed to MCAD as an object containing part number, REFDES, package boundary with height, symbol name, IDX properties, and pins. Requires Symbol definition on import Mechanical Component Passed to MCAD as an object containing part number, REFDES (if available), package boundary with height, symbol name, and pins (if available). Requires Symbol definition on import. Table 1-2 Object Type Definitions