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Importing CSI capture schematic to PCB Editor

maha18s

 Hi,

 I am kinda new to OrCad and am having trouble with my layout. 

I imported my logic to PCB editor and I have couple of errors and warnings.

 First of all I have to learn to draw footprints that I am working on the thing that i dont understand is how to match the PIN numbers .

 For my DB9 connector there is mismatch in the footprint and the symbol. As the number of pins in the schematic was 9 and footprint has 2 more drill holes. 

I added two pin to my schematic and put a NC on the two pins. When I import the logic it doesnt show me error for this part but when i want to place is it, the command prompt shows this message "Pin numbers do not match between symbol and component. Run dev_check on device file for more information" 

I am able to see the part as preview and I try to place the part but it doesnt seem to work. 

 

Also I am getting these errors and warnings

 

#1   ERROR(SPMHNI-191): Device/Symbol check error detected.

WARNING(SPMHNI-337): Unable to load symbol '7X2-POS-HEADER' for device 'HEADER 7X2_7X2-POS-HEADER_D2514': WARNING(SPMHUT-127): Could not find padstack P65C45P.
    due to ERROR(SPMHDB-274): Unable to load flash symbol TR61X75X15-45 (Check PSMPATH setting for this symbol).

#1   WARNING(SPMHNI-192): Device/Symbol check warning detected.

WARNING(SPMHNI-194): Symbol '2POS_SPDT' for device 'SW SLIDE-SPDT_2POS_SPDT_2POS_SP' not found in PSMPATH or must be "dbdoctor"ed.

 

I have checking my design path which seems to be correct and I am able to see the padstack P654C45P but still it doesnot read it.

 

The last warning is because I havn't drawn the footprint yet which I am going through to draw the footprint.

 

Please help me 

Regards,

Maha

 

 

  • maha18s

     Also I checked the numbering of the DB9 connector in schematic it has 11 pins in both the schematic and the footprint 

    I am using the db9 footprint in the pcb_lib directory.

    I am using Allegro PCB Editor 16.0

  • redwire

     Ok, fairly simple.  First the two pins... there are two types of pins: electrical and mechanical.  Mechanical pins are not counted by the packager.  It is looking to match electrical pins.  Some people tie the two shield (or case) pins electrically in their DB9 symbol so they can attach to a ground plane.

    In the symbol editor look at each pin (display element). It will list the pin type and number if it's electrical.
    OrCAD needs to have a matching set of electrical pins and you'll be ok.

     

    WARNING(SPMHNI-337): Unable to load symbol '7X2-POS-HEADER' for device 'HEADER 7X2_7X2-POS-HEADER_D2514': WARNING(SPMHUT-127): Could not find padstack P65C45P.
        due to ERROR(SPMHDB-274): Unable to load flash symbol TR61X75X15-45 (Check PSMPATH setting for this symbol).

    This one is because you are missing a flash symbol called TR61X75X15-45.  You need to make sure you have this symbol somewhere in your symbol path or generate a new one with the same name.

     

  • maha18s

    Thank you for you response.

     I am sorry but what is flash symbol. I only have the .dra and .psm files for the '7x2-POS-HEADER'.

     How do I create a new one.

     

    Where do I check for the changes in the PCB editor for the mechanical and electrical pins.

    New to Allegro and OrCad so please bear with me.

     

    Regards

    Maha

     

  • Ejlersen

    If you're working with positive plane layers you don't need them and could delete them in the pad designer tool.

    Otherwise, file, new, flash symbol and select Add, Flash and fillin the form.

    Save the file to disk which will create a fsm.

    Inside the pad designer under layers you can select Flash as the type in the Thermal Pad section.

     Best regards,

    Ole

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