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I created a board with 4 layers (Top, GND, VCC, Bottom). Components on both sides of boards. When I route it,
-it only route on top layer.
-Unable to fanout
Anybody know how to get this to work? Please help.
Thanks in advance.
(I use 16.3)
1. iit only route on top layer.
It may be that you cannot connect to other layers without having vias defined. If you Mirror a component, can you then route on the bottom layer?
2. -Unable to fanout
As above, without vias defined I suspect you cannot create a fanout. As all my boards have vias defined, I can't try this.
3. -not vias
Enter Constraint Manager and go to Physical domain > Physical Constraints > All Layers. You will see a column named Vias, which I suspect is blank. Double-click on the cell in the Vias column and the Edit Via List form will open where you can double-click a via in the left pane to move it to the right pane. When done, close CM and you should then be able to place a via you added to the Via List.
Once you get all these issues resolved, I suggest exploring the Working Layer mode which is now available in even the L license with 16.3. For more than 2 layers, I think it's definitely the way to go.
In reply to EvanShultz:
Yes, it is previously blank. Now I insert the "STANDARDVIA" which is a pad define by pcb editor into it and it still do the same thing. Which padstack do I need to add in there?
In reply to newpic:
Ok, I got it. The .dra and .psm for STANDARDVIA are missing from the current directory.
After I insert insert the STANDARDVIA into the column, I have to make sure the psm and dra also in the same directory.
Good news! So after adding a via in the Via List, all 3 problems are gone?