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Hole to Line spacing not working

Constraints:

Constraints are enabled:

But some other constraint seems to be active:

The pink color is the hole and the kind of shaded part in the middle is the pad, which will be removed by the drill. So it's a NPTH.

Any ideas why I can route as close as 0.15 mm to the hole and not 0.3 mm?

Padstack data:

type: Through Pin
units: mm
decimal places: 4

Hole data

geometry: Circle
size: 3.3000
offset: (0.0000, 0.0000)
tolerance: positive=0.0000 negative=0.0000
plating: Non-plated

oldmouldy over 5 years ago

Where are the Constraints applied? Use Check (Display)>Constraints, check that all of the elements are on in Find, window select the hole and trace to see the applied Constraints.
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jc teyssier over 5 years ago

17.2 ? Have a look to constraint mode and mechanical section: here is located a check box to use spacing constraint set values instead of provided values in this section.
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Fredda over 5 years ago

The Resolved Spacing Constraints list is quite long. See below.

I'm using Allegro 17.2.

> constraint mode and mechanical section
Which part are you referring to? In the Design for Fabrication part, there are a number of copper spacing constraints. How do they differ from the spacing constraints? I must be missing something here...

By the way, the Hole to Line spacing constraint works on the top layer, but not on the bottom and the internal layers.

Resolved Spacing Constraints
Resolved Level	Source Name	Constraint	Value
Unresolved	None	Package to Package Spacing	0 MM
Design	DEFAULT	Thru Pin to Thru Pin Spacing	0.4 MM
Design	DEFAULT	Thru Pin to SMD Pin Spacing	0.4 MM
Design	DEFAULT	Thru Pin to Thru Via Spacing	0.14 MM
Design	DEFAULT	Line to Thru Pin Spacing	0.14 MM
Design	DEFAULT	Thru Pin to Shape Spacing	0.2 MM
Design	DEFAULT	SMD Pin to SMD Pin Spacing	0.35 MM
Design	DEFAULT	SMD Pin to Thru Via Spacing	0.14 MM
Design	DEFAULT	Line to SMD Pin Spacing	0.14 MM
Design	DEFAULT	Shape to SMD Pin Spacing	0.2 MM
Design	DEFAULT	Thru Via to Thru Via Spacing	0.14 MM
Design	DEFAULT	Line to Thru Via Spacing	0.14 MM
Design	DEFAULT	Shape to Thru Via Spacing	0.2 MM
Design	DEFAULT	Line to Line Spacing	0.14 MM
Design	DEFAULT	Line to Shape Spacing	0.2 MM
Design	DEFAULT	Shape to Shape Spacing	0.3 MM
Design	DEFAULT	Blind/Buried Via to Blind/Buried Via Spacing	0.14 MM
Design	DEFAULT	Blind/Buried Via to Thru Pin Spacing	0.14 MM
Design	DEFAULT	Blind/Buried Via to SMD Pin Spacing	0.14 MM
Design	DEFAULT	Blind/Buried Via to Thru Via Spacing	0.14 MM
Design	DEFAULT	Blind/Buried Via to Line Spacing	0.14 MM
Design	DEFAULT	Blind/Buried Via to Shape Spacing	0.2 MM
Design	DEFAULT	Blind/Buried Via to Test Pin Spacing	0.14 MM
Design	DEFAULT	Blind/Buried Via to Test Via Spacing	0.14 MM
Design	DEFAULT	Test Pin to Test Pin Spacing	0.14 MM
Design	DEFAULT	Test Pin to Thru Pin Spacing	0.14 MM
Design	DEFAULT	SMD Pin to Test Pin Spacing	0.14 MM
Design	DEFAULT	Test Pin to Thru Via Spacing	0.14 MM
Design	DEFAULT	Test Pin to Test Via Spacing	0.14 MM
Design	DEFAULT	Line to Test Pin Spacing	0.14 MM
Design	DEFAULT	Shape to Test Pin Spacing	0.2 MM
Design	DEFAULT	Test Via to Test Via Spacing	0.14 MM
Design	DEFAULT	Test Via to Thru Pin Spacing	0.14 MM
Design	DEFAULT	SMD Pin to Test Via Spacing	0.14 MM
Design	DEFAULT	Test Via to Thru Via Spacing	0.14 MM
Design	DEFAULT	Line to Test Via Spacing	0.14 MM
Design	DEFAULT	Shape to Test Via Spacing	0.2 MM
Design	DEFAULT	Thru Pin to Bondpad Spacing	0.14 MM
Design	DEFAULT	SMD Pin to Bondpad Spacing	0.14 MM
Design	DEFAULT	Bondpad to Thru Via Spacing	0.14 MM
Design	DEFAULT	Bondpad to Bondpad Spacing	0.14 MM
Design	DEFAULT	Bondpad to Line Spacing	0.14 MM
Design	DEFAULT	Bondpad to Shape Spacing	0.2 MM
Design	DEFAULT	Bondpad to Blind/Buried Via Spacing	0.14 MM
Design	DEFAULT	Bondpad to Test Pin Spacing	0.14 MM
Design	DEFAULT	Bondpad to Test Via Spacing	0.14 MM
Design	DEFAULT	Differential Pair Bondpad to Bondpad Spacing	0 MM
Design	DEFAULT	Mechanical Pin Antipad to Mechanical Drill Hole Spacing	0 MM
Design	DEFAULT	Mechanical Pin Antipad to Pin Spacing	0 MM
Design	DEFAULT	Mechanical Pin Antipad to Via Spacing	0 MM
Design	DEFAULT	Mechanical Pin Antipad to Line Spacing	0 MM
Design	DEFAULT	Mechanical Pin Antipad to Shape Spacing	0 MM
Design	DEFAULT	Mechanical Pin Antipad to Drill Hole Spacing	0 MM
Design	DEFAULT	Drill Hole to Pin Spacing	0.3 MM
Design	DEFAULT	Drill Hole to Via Spacing	0.3 MM
Design	DEFAULT	Drill Hole to Line Spacing	0.3 MM
Design	DEFAULT	Drill Hole to Shape Spacing	0.3 MM
Design	DEFAULT	Drill Hole to Drill Hole Spacing	0.3 MM
Design	DEFAULT	Microvia to Microvia Spacing	0.15 MM
Design	DEFAULT	Microvia to Thru Pin Spacing	0.15 MM
Design	DEFAULT	Microvia to SMD Pin Spacing	0.15 MM
Design	DEFAULT	Microvia to Thru Via Spacing	0.15 MM
Design	DEFAULT	Microvia to Blind/Buried Via Spacing	0.15 MM
Design	DEFAULT	Microvia to Line Spacing	0.15 MM
Design	DEFAULT	Microvia to Shape Spacing	0.15 MM
Design	DEFAULT	Microvia to Test Pin Spacing	0.15 MM
Design	DEFAULT	Microvia to Test Via Spacing	0.15 MM
Design	DEFAULT	Bondpad to Microvia Spacing	0.15 MM
Design	DEFAULT	Thru Pin to Thru Pin Same Net Spacing	0.4 MM
Design	DEFAULT	Thru Pin to SMD Pin Same Net Spacing	0.4 MM
Design	DEFAULT	Thru Pin to Thru Via Same Net Spacing	0.14 MM
Design	DEFAULT	Line to Thru Pin Same Net Spacing	0.14 MM
Design	DEFAULT	Thru Pin to Shape Same Net Spacing	0.2 MM
Design	DEFAULT	SMD Pin to SMD Pin Same Net Spacing	0.35 MM
Design	DEFAULT	SMD Pin to Thru Via Same Net Spacing	0.14 MM
Design	DEFAULT	Line to SMD Pin Same Net Spacing	0.14 MM
Design	DEFAULT	Shape to SMD Pin Same Net Spacing	0.2 MM
Design	DEFAULT	Thru Via to Thru Via Same Net Spacing	0.14 MM
Design	DEFAULT	Line to Thru Via Same Net Spacing	0.14 MM
Design	DEFAULT	Shape to Thru Via Same Net Spacing	0.2 MM
Design	DEFAULT	Line to Line Same Net Spacing	0.14 MM
Design	DEFAULT	Line to Shape Same Net Spacing	0.2 MM
Design	DEFAULT	Shape to Shape Same Net Spacing	0.3 MM
Design	DEFAULT	Blind/Buried Via to Blind/Buried Via Same Net Spacing	0.14 MM
Design	DEFAULT	Blind/Buried Via to Thru Pin Same Net Spacing	0.14 MM
Design	DEFAULT	Blind/Buried Via to SMD Pin Same Net Spacing	0.14 MM
Design	DEFAULT	Blind/Buried Via to Thru Via Same Net Spacing	0.14 MM
Design	DEFAULT	Blind/Buried Via to Line Same Net Spacing	0.14 MM
Design	DEFAULT	Blind/Buried Via to Shape Same Net Spacing	0.2 MM
Design	DEFAULT	Blind/Buried Via to Test Pin Same Net Spacing	0.14 MM
Design	DEFAULT	Blind/Buried Via to Test Via Same Net Spacing	0.14 MM
Design	DEFAULT	Test Pin to Test Pin Same Net Spacing	0.14 MM
Design	DEFAULT	Test Pin to Thru Pin Same Net Spacing	0.14 MM
Design	DEFAULT	SMD Pin to Test Pin Same Net Spacing	0.14 MM
Design	DEFAULT	Test Pin to Thru Via Same Net Spacing	0.14 MM
Design	DEFAULT	Test Pin to Test Via Same Net Spacing	0.14 MM
Design	DEFAULT	Line to Test Pin Same Net Spacing	0.14 MM
Design	DEFAULT	Shape to Test Pin Same Net Spacing	0.2 MM
Design	DEFAULT	Test Via to Test Via Same Net Spacing	0.14 MM
Design	DEFAULT	Test Via to Thru Pin Same Net Spacing	0.14 MM
Design	DEFAULT	SMD Pin to Test Via Same Net Spacing	0.14 MM
Design	DEFAULT	Test Via to Thru Via Same Net Spacing	0.14 MM
Design	DEFAULT	Line to Test Via Same Net Spacing	0.14 MM
Design	DEFAULT	Shape to Test Via Same Net Spacing	0.2 MM
Design	DEFAULT	Thru Pin to Bondpad Same Net Spacing	0.14 MM
Design	DEFAULT	SMD Pin to Bondpad Same Net Spacing	0.14 MM
Design	DEFAULT	Bondpad to Thru Via Same Net Spacing	0.14 MM
Design	DEFAULT	Bondpad to Bondpad Same Net Spacing	0.14 MM
Design	DEFAULT	Bondpad to Line Same Net Spacing	0.14 MM
Design	DEFAULT	Bondpad to Shape Same Net Spacing	0.2 MM
Design	DEFAULT	Bondpad to Blind/Buried Via Same Net Spacing	0.14 MM
Design	DEFAULT	Bondpad to Test Pin Same Net Spacing	0.14 MM
Design	DEFAULT	Bondpad to Test Via Same Net Spacing	0.14 MM
Design	DEFAULT	Drill Hole to Pin Same Net Spacing	0.3 MM
Design	DEFAULT	Drill Hole to Via Same Net Spacing	0.3 MM
Design	DEFAULT	Drill Hole to Line Same Net Spacing	0.3 MM
Design	DEFAULT	Drill Hole to Shape Same Net Spacing	0.3 MM
Design	DEFAULT	Drill Hole to Drill Hole Same Net Spacing	0.3 MM
Design	DEFAULT	Microvia to Microvia Same Net Spacing	0.15 MM
Design	DEFAULT	Microvia to Thru Pin Same Net Spacing	0.15 MM
Design	DEFAULT	Microvia to SMD Pin Same Net Spacing	0.15 MM
Design	DEFAULT	Microvia to Thru Via Same Net Spacing	0.15 MM
Design	DEFAULT	Microvia to Blind/Buried Via Same Net Spacing	0.15 MM
Design	DEFAULT	Microvia to Line Same Net Spacing	0.15 MM
Design	DEFAULT	Microvia to Shape Same Net Spacing	0.15 MM
Design	DEFAULT	Microvia to Test Pin Same Net Spacing	0.15 MM
Design	DEFAULT	Microvia to Test Via Same Net Spacing	0.15 MM
Design	DEFAULT	Bondpad to Microvia Same Net Spacing	0.15 MM
Design	DEFAULT	Minimum Blind/Buried Via Gap	0.13 MM
Design	DEFAULT	Same Net Check Flag	On
Unresolved	None	Package to Room Spacing	0 MM
Design	DEFAULT	Minimum Blind/Buried Via Gap	0.13 MM

Fredda over 5 years ago

I posted a reply, but it was flagged as spam. Probably because of a long list of resolved constraints after using Display->Constraints. Don't know if it will pop up here later.

In any case, I just found out that, as jc teyssier pointed out, there was a checkbox in the Design part in the Analysis Mode dialog window that needed to be ticked.

These constraints settings are not that easy to understand... While I'm at it, what is the difference between the Spacing constraints and the Design for Fabrication->Copper Spacing constraints? They seem to control the same things.
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