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What does "ERROR: 2 OUTPUT Pins on net SPI-SDI" mean ?

firatkocak

Hi,

 

When i run erc command i get this error. I checked the SPI-SDI net but

could not see anything wrong. So, What does this error mean ? Is it a

critical one ?

 

Best regards,

 

Firat

 

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  • Firat Kocak schrieb:

    Hi,

     

    When i run erc command i get this error. I checked the SPI-SDI net but

    could not see anything wrong. So, What does this error mean ? Is it a

    critical one ?

     

    Best regards,

     

    Firat

     

    It normally is critical because it means that two outputs are connected

    together. This can mean i.e. that one output provides a high supply

    voltge and the other one the ground. Result will be a nice smell of Amps.

    Only open collector outputs may be connected together and perhaps

    tristate outputs with appropriate control.

    Maybe just the direction of a pin is wrong in a library.

     

    --

    Gruß / regards

     

    Jörn

     

Reply

  • Firat Kocak schrieb:

    Hi,

     

    When i run erc command i get this error. I checked the SPI-SDI net but

    could not see anything wrong. So, What does this error mean ? Is it a

    critical one ?

     

    Best regards,

     

    Firat

     

    It normally is critical because it means that two outputs are connected

    together. This can mean i.e. that one output provides a high supply

    voltge and the other one the ground. Result will be a nice smell of Amps.

    Only open collector outputs may be connected together and perhaps

    tristate outputs with appropriate control.

    Maybe just the direction of a pin is wrong in a library.

     

    --

    Gruß / regards

     

    Jörn

     

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