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78 DESIGN007 MAGAZINE I AUGUST 2019 TI Sitara processor, the board consists of 512 MB DDR3 RAM and 2GB of flash as well as a number of physical interfaces and other fea- tures (Figure 1). Tightly Linked DRC and PCB Layout Interfaces Because the layout and DRC tools are fully integrated, a PCB design can be loaded into DRC directly from the PCB layout window. The rules within DRC are sorted into specific cat- egories—SI, PI, EMI, and safety. And each in- dividual rule contains a descriptive overview page, making it easy for designers to select the most important tests to run on their PCB lay- out. The overview page for the nets crossing gaps rule within DRC is shown in Figure 2. Figure 1: The BeagleBone Black is an open-source development board containing a number of different electrical characteristics suitable for DRC simulation. Figure 2: The nets crossing gaps overview page within the DRC tool, which includes a brief description, graphical imagery, and descriptive parameters.