Issue link: https://resources.pcb.cadence.com/i/1180176
Allegro Front-to-Back User Guide Capturing Logical Design October 2019 29 Product Version 17.4-2019 © 1999-2019 All Rights Reserved. Capturing Logical Designs using DE-HDL Design Entry HDL supports creating Flat, Structured, and Hierarchical designs. Design Entry HDL allows you to: ■ Create a schematic (Flat, Structured, or Hierarchical) ■ Manage a design with multiple users Note: For detailed information about Design Entry HDL, refer to Allegro Design Entry HDL User Guide and Allegro Design Entry HDL Tutorial. Usually, the creating a small design is done using the flat design technique. Flat Designs The flat design method is the most straightforward technique for creating a design with the Cadence system design tools. In a flat design, all parts on the drawing come from Design Entry HDL or user-defined libraries and are one-to-one logical representations of the physical parts. The entire interconnecting wiring within the design is entered pin-to-pin. Structured Designs The structured design method facilitates the entry and analysis of sophisticated designs that make use of bused signals, memory and, register depth. A structured design minimizes the number of interconnections and parts on the schematic. Hierarchical Designs The hierarchical design technique is an efficient approach to developing complex designs that can be organized into modules. This method is useful for designs that re-use many of the same circuit functions and for isolating portions of the design for teamwork assignments. Managing Designs with Multiple Users in DE-HDL Using the Design Management option in DE-HDL, you can enable structured team design for a design to shorten your design cycle. You can manage the design on a file system, in a folder on SharePoint, or in a folder in PTC Windchill. This functionality enables designers to manage a multiblock hierarchical, or flat, design with multiple users concurrently modifying portions of the logical and physical design. This helps design teams reduce the overall design time. Groups of engineers work together on individual