A multi-sheet design project is arranged as a hierarchical structure of logical blocks, where each block can be either a schematic sheet or a HDL file (VHDL or Verilog). While the project file links the various source documents into a single project, the document-to-document and net connective relationships are defined by information in the documents themselves. Your choices will vary according to the size and type of each project and your personal preferences. There are two decisions to make for each multi-sheet project - the structural relationship of the sheets and the method employed for electrical connectivity between circuitry on those sheets. Another reason is that this method allows you to use small format printing, such as laser printers. Maintaining these modules as individual documents would allow several engineers to work on a project at the same time.
For example, the design may include various modular elements. Even when the design is not particularly complicated, there can be advantages in organizing the project across multiple sheets. The structural and connective considerations involved in multi-sheet design are discussed, then the different browsing tools that let you verify net connectivity across source documents are described.Įngineers turn to multi-sheet design for various reasons, the primary one being project size some projects are too large or complex to fit on a single sheet.
Example 4 - Net Labels and Ports Global.
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