Robust Low Power VLSI R obust L ow P ower VLSI Tutorial to Correct Unwanted Silk Screen Overlaps in the Final PCB Arijit Banerjee

Robust Low Power VLSI The Issue  When you see the routed layout it looks OK  After you submit in the Advanced Circuit and have the “results” , if you look into the PDF attached full Layout view you may see some unwanted Silk Screen texts are overlapping with your documentation 2

Robust Low Power VLSI Snapshot of No-Silk-Screen-Issue in Routed Layout 3

Robust Low Power VLSI Snapshot of Silk-Screen-Issue in the “Results” Pdf from Advanced Circuit 4

Robust Low Power VLSI How to Correct the Unwanted Silk Screen Issue?  You need to modify the location or delete the “type” attribute in the Decals in the routed PCB  Step 1: Right Click and Select components in the routed PCB view  Step 2: Right Click one of the components and select “Edit Decal”: You will see a popup showing “This operation can only performed in DRC off mode”: Click OK and the Decal editor will open up  Step 3: Edit the “Part Type” or “Type” location by selecting properties and reducing height to 50 and setting it to 5 points width: also move the attribute to a location of the drawing where it does not overlap wit the other documentation: Otherwise delete it  Step 4: Save and exit from the decal editor: it will ask to make changes to all the decals: click “ALL” to apply changes 5

Robust Low Power VLSI Screenshot of Step 1 6

Robust Low Power VLSI Screenshot of Step 2 7

Robust Low Power VLSI Screenshot of Step 2 contd. 8

Robust Low Power VLSI Screenshot of Step 3 9

Robust Low Power VLSI Screenshot of Step 3 contd. 10

Robust Low Power VLSI Screenshot of Step 4 contd. 11

Robust Low Power VLSI Corrected PDF Screenshot from Advanced Circuits  Once done with the correction of Silk Screen overlapping issue, extract and submit all the layer views to Advances circuit  Now after getting the “results” click and see the PDF of all the layers and you will see that all the Silk Screen overlapping issue is gone 12

Robust Low Power VLSI Screenshot of Corrected Silk Screen issue 13

Robust Low Power VLSI Thank You  If you have any questions at 14