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Using Design Sync Question

cstocci

Folks,

I work with another consultant that uses PADS layout from my OrCAD Capture netlist.  He "resets" his list of component reference designations on his layout with a some command.  What he is doing is changing the reference designations to the lowest numerical values.  As you know, during design, many chages keep bumping up the reference designation values.  Even if you only have, say C32, this might become C132, etc.  The client we have likes to bring all of the excessively large references designation values back to a reasonable base level.  So, if we have 32 caps and 67 resistors, then the highest ref designations should be C32 and R67, etc.  PADS and Altium easily do this at the layout level and "design sync" back to their schematic.  I have converted his PADS layout into Allegro (no issues there), but it appears that there was once a Design Sync command on the Capture toolbar that allowedf you to go either way with the syncing process, i.e., from Capture to Layout and Layout to Capture.  That command/button seems to be among the missing in the latest version, SPB 17.40.015.

This process was described in the following YouTube videos by Cadence trainers:

https://www.youtube.com/watch?v=nO_m498KamA

www.youtube.com/watch

Any help?

Chris

Parents
  • 0 in reply to cstocci

    So the icons have changed since this video was recorded - try using the menu PCB - Update Schematic which runs Design Sync from Layout to Schematic or PCB - Update Layout which runs Design Sync from Schematic to PCB....

  • 0 in reply to steve

    Hi Steve,

    I got the updated PADS pcb-to-Allegro layout translation done.  As mentioned, the PADS guy changed all of the reference designations by re-annotating, in effect, at the layout level.  I have now imported, successfully, that updated PADS-to-Allegro layout.  Then I go to the File/Update Schematic pull-down menu.  I insert the OrCAD/Allegro Capture schematic I want to get back-annotated from this newly imported Allegro layout file and I see this dialog:

    When I hit the "Sync," dialog disappears and see the dialog:

    Starting genfeedformat...

    genfeedformat completed successfully, use Viewlog to review the log file.

    genfeedformat completed successfully, use Viewlog to review the log file.

    Here's the viewlog report:

    (---------------------------------------------------------------------)
    (                                                                     )
    (    GenFeed                                                          )
    (                                                                     )
    (    Software Version : 17.4S015                                      )
    (    Date/Time        : Mon Mar 15 13:58:09 2021                      )
    (                                                                     )
    (---------------------------------------------------------------------)
    

    

    Extract file used: D:/Cadence/SPB_17.4/share/pcb/text/views/pxlBA-rfpcb.txt
    

    

    SUMMARY: No errors or warnings detected.
    

    When I open the schematic capture, nothing has changed.  What am I doing wrong?
    

    Chris
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    

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						in reply to steve
					
									
    
	
    

		
		
    
					
    Hi Steve,
    

    

    I got the updated PADS pcb-to-Allegro layout translation done.  As mentioned, the PADS guy changed all of the reference designations by re-annotating, in effect, at the layout level.  I have now imported, successfully, that updated PADS-to-Allegro layout.  Then I go to the File/Update Schematic pull-down menu.  I insert the OrCAD/Allegro Capture schematic I want to get back-annotated from this newly imported Allegro layout file and I see this dialog:
    

     
    

    When I hit the "Sync," dialog disappears and see the dialog:
    

    

    Starting genfeedformat...
    

    genfeedformat completed successfully, use Viewlog to review the log file.
    

    genfeedformat completed successfully, use Viewlog to review the log file.
    

    

    Here's the viewlog report:
    

    (---------------------------------------------------------------------)
    

    (                                                                     )
    

    (    GenFeed                                                          )
    

    (                                                                     )
    

    (    Software Version : 17.4S015                                      )
    

    (    Date/Time        : Mon Mar 15 13:58:09 2021                      )
    

    (                                                                     )
    

    (---------------------------------------------------------------------)
    

    

    

    Extract file used: D:/Cadence/SPB_17.4/share/pcb/text/views/pxlBA-rfpcb.txt
    

    

    SUMMARY: No errors or warnings detected.
    

    When I open the schematic capture, nothing has changed.  What am I doing wrong?
    

    Chris
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    

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						in reply to cstocci
					
									
    
	
    

		
		
    
					
    Has the schematic ever been imported (Design Sync) into the Allegro layout? It sounds like it hasn't and it would need to be for the tools to determine any changes coming back. The design sync command MUST be run first into a schematic, rename in Allegro then design sync back to the schematic. If this was imported into PADS then this won't work.
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    

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						in reply to steve
					
									
    
	
    

		
		
    
					
    Hi Steve,
    

    

    You are correct.  I completely forgot that I translated a PADS file into Allegro,  hence there would be no Allegro netlist in the usual Allegro subdirectory under the schematic directory which the sync function wants to use.  I will have to create an Allegro netlist the usual way, then insure that the PADS layout file has footprint names that are acceptable and identical to the Allegro netlist.  At that point, now I can "sync" with my Allegro file netlist and the translated Allegro layout files from the PADS ASCII import.  At this point, I should be able to re-annotate the reference designations from the Allegro file back to the OrCAD/Allegro Capture schematic.
    

    Am I making sense, Steve?  Does this sound correct?
    

    Chris
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    

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