OrCAD X Resources

OrCAD X Constraint Management Guide Part 1

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5. In the new window, type SCS_BGA-REGION (Stands for Spacing Constraint Set BGA Region). Click Ok. 6. The spacing constraint set (SCset) has been created and is visible on the worksheet. 7. Let's set the value in the column Line To - All (mm/mil) to 3 mils by typing "3 mil" into the blue highlighted field (to account for neck mode for differential pairs and random scenarios we may run into while routing underneath the BGA). The value will change from *** to the correct value, and units (ours changed from mils to 0.076 mm) are shown below. Tip: When you enter a value, you don't have to convert to mm or mils beforehand. Just type "3 mil" into the field, and the software will convert it to the appropriate units automatically. 8. We should also update all the column values to be at least 3 mils in spacing. However, that would be tedious. Luckily we can assign the same value to all columns and rows. Do that by right clicking the SCS_BGA-REGION cell, then choosing - Change all design unit attributes…. A Set Value window will appear. 9. Enter '3 mil' (without the quotation marks). Click Ok. 22 www.cadence.com Part 1 of 5

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