Issue link: https://resources.pcb.cadence.com/i/1521395
Design for Assembly Core Checks The checks defined within this domain are focused on positioning the design for the assembly process. The rules aid in providing proper clearances and other constraints to improve the efficiency and reduction of issues for automated and manual assembly. 1. Core Outline DFA Constraint Set Index Ref Rule Description Usage Image 1 - Component to Outline Checks the space between the DESIGN_OUTLINE geometry and geometry and the edge of the component PLACE_BOUND Geometry. Any measured value smaller than the rule value is reported as a DRC. This check will also apply to zone boundaries where conductive layers are on different planes. (DFA_COMP_TO_OLN) Etch 2 - Component to Cutout Checks the space between the CUTOUT geometry and the edge of the component PLACE_BOUND Geometry. Any measured value smaller than the rule value is reported as a DRC. (DFA_COMP_TO_CO_ OLN) Etch 3 - Pastemask to Outline Checks the space between the DESIGN_OUTLINE geometry and the edge of any pastemask geometry. Any measured value smaller than the rule value is reported as a DRC. Pastemask layers must be defined in the design Cross-Section Editor. (DFA_ PASTMASK_TO_OLN) Non-Etch 4 - Pastemask to Cutout Checks the space between the CUTOUT geometry and the edge of any pastemask geometry. Any measured value smaller than the rule value is reported as a DRC. Paste mask layers must be defined in the design Cross-Section Editor. (DFA_ PASTMASK_TO_CUTOUT) Non-Etch 2. Core Pkg to Pkg Spacing DFA Constraint Set Index Ref Rule Description Usage Image 5 - Package to Package Spacing This constraint defines the minimum allowable distance between two packages with various orientations. The format of the constraint value is like "SS:EE:SE:ES", where SS stands for Side to Side, EE stands for Edge to Edge, SE stands for Side to Edge and ES stands for Edge to Side. Example constraint value may look like 10:12:20:21. Each of the distance values are captured in design unit. DRC will be reported if any two packages placed in a given orientation violates the constraint value. The constraint can be different for different type of packages, and hence a triangular matrix is used to represent constraints among different packages. (DFA_PKG_TO_PKG_SPACING) Spacing 15 www.cadence.com OrCAD X DesignTrue DFM Rules Guide