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Recent content by aharsha

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    Reference Plane and Return path

    Hi all, what is the relationship between trace impedance and reference plane? how the trace impedance depends on reference plane? how it works? Also what is the difference between reference plane and return path? The VCC plane can be used for a signal return path? How it works? Thanks in...
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    possitive power plane in pads

    Hi, Go to Setup --> Layer Definition --> click the layer --> in plane type select Split/Mixed --> then assign the nets (GND, PWR net names) --> ok Hope this helps you. Thanks, Ahar..
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    How to set a decimal points in pads2007

    Hi Srini, You can set the decimal places as follows. Go to Tools --> Options --> Dimensioning --> Settings --> select Text --> in that set the Linear precision value as 3 --> ok Now you will get 3 decimal places. Regards, Ahar.
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    QDR interface routing guidelines in Layout ?

    qdr interface routing guideline Hi all, can anyone pls tell me about QDR (QUAD DATA RATE SRAM) and its Guidelines which we need to take care in Layout. Thanks in advance. Ahar...
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    Cadence Allegro SPB 16.0

    cadence allegro tutorial Hi, You can use z-copy shape from edit menu to oversize the shape. Edit --> z-copy shape --> Options (control panel) --> (shape options) expand--> give the value that the shape to be oversized... After that, Delete the existing shape. Hope this will help u...
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    Query on expedition - any option to define the miter length

    Query on expedition Hi... In expedition, is there any option to define the miter(chamfer) length of traces as in the allegro tool? For example in allegro, while doing the length matching we can specify the miter length. Thanks in advance.
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    Back annotation in Schematic

    Dear All, I have done schematic in Design Entry CIS and the Layout is in Allegro 15.7. After completing the layout i have Renamed the Ref Des in Allegro Layout. What is the procedure for annotating from Layout to schematic. Please explain in detail. Thanks in Advance, Regards, Ahar.
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    Three questions about PADS 2007

    Hi, 1) You can use 'Copper Pour' to fill in Signal layers. change the Grid/copper width for continuous fill. 2) CAE is referred for Schematic symbols. Split/mixed referred for plane layer in which u can fill copper as well as route also. 3) first update the decal in library. Then in layout...
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