spacing constraint setup

Yes under next to each SCSet is a plus sign which will show Conductor and Plane and beneath that are the layer names. Set the values you want for a rule and then apply that to the net.

thank you for your reply.

i can not find any net name under conductor but only layer names

please let me clarify what i would like to do.

i would like to have 100um spacing to GND shapes on L1 layer for clines with all nets and 100um spacing to GND shapes on L2 on all nets except net A which has 200um spacing to GND shapes on L2.

You need to create a Spacing CSet which has all internal layers set to 200um Shape to Line and external layers set to 100um Shape to Line.

To make it easy you can assign a Layer Sub-Type in the Cross Section Editor to create a sub-group in Constraint Manager for rule assignment.

Finally, create separate Net Classes for GND nets and NETA nets then assign the newly created Spacing CSet when the Classes come in contact with each other to drive the larger Shape to Line Spacing

Here are the steps:

1. In the Cross Section Editor, enter External under the Constraint column for Top and Bottom
   • 
2. In Constraint Manager > Spacing Constraint Set > All Layers
   
   • Update Default Spacing CSet so it has 100um for Shape to Line
   • Create new Spacing CSet "200UM_SHAPE_TO_LINE" (RMB > Create > Spacing CSet over DEFAULT)
   • In Spacing CSet "200UM_SHAPE_TO_LINE", enter 200um for Shape to Line on Conductor and Plane Layer Types and 100um on Conductor/EXTERNAL Layer Type
   • 
3. In Constraint Manager > Net > All Layers
   • Add GND to a Net Class called "GND_NETS" (RMB > Create > Class over GND)
   • Add NETA to a Net Class called "NETA_NETS" (RMB > Create > Class over NETA)
   • 
4. In Constraint Manager > Net Class-Class > CSet assignment matrix
   • Assign "200UM_SHAPE_TO_LINE" when Net Class "GND_NETS" comes in contact with Net Class "NETA_NETS"
   • 

Hope this helps,
Mike Catrambone

You need to create a Spacing CSet which has all internal layers set to 200um Shape to Line and external layers set to 100um Shape to Line.

To make it easy you can assign a Layer Sub-Type in the Cross Section Editor to create a sub-group in Constraint Manager for rule assignment.

Finally, create separate Net Classes for GND nets and NETA nets then assign the newly created Spacing CSet when the Classes come in contact with each other to drive the larger Shape to Line Spacing

Here are the steps:

1. In the Cross Section Editor, enter External under the Constraint column for Top and Bottom
   • 
2. In Constraint Manager > Spacing Constraint Set > All Layers
   
   • Update Default Spacing CSet so it has 100um for Shape to Line
   • Create new Spacing CSet "200UM_SHAPE_TO_LINE" (RMB > Create > Spacing CSet over DEFAULT)
   • In Spacing CSet "200UM_SHAPE_TO_LINE", enter 200um for Shape to Line on Conductor and Plane Layer Types and 100um on Conductor/EXTERNAL Layer Type
   • 
3. In Constraint Manager > Net > All Layers
   • Add GND to a Net Class called "GND_NETS" (RMB > Create > Class over GND)
   • Add NETA to a Net Class called "NETA_NETS" (RMB > Create > Class over NETA)
   • 
4. In Constraint Manager > Net Class-Class > CSet assignment matrix
   • Assign "200UM_SHAPE_TO_LINE" when Net Class "GND_NETS" comes in contact with Net Class "NETA_NETS"
   • 

Hope this helps,
Mike Catrambone

thank you for your detailed instruction, mike.

i was able to set up the spacing constraint.

you are amazing!

thank you again.

i really appreciate it.