178 lines
4.3 KiB
Markdown
178 lines
4.3 KiB
Markdown
### Top-level Clauses
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(version <number>)
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(rule <rule_name> <rule_clause> ...)
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### Rule Clauses
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(constraint <constraint_type> ...)
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(condition "<expression>")
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(layer "<layer_name>")
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### Constraint Types
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* annular_width
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* clearance
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* courtyard_clearance
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* diff\_pair\_gap
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* diff\_pair\_uncoupled
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* disallow
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* edge_clearance
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* length
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* hole
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* hole_clearance
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* silk_clearance
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* skew
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* track_width
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* via_count
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### Item Types
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* buried_via
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* graphic
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* hole
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* micro_via
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* pad
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* text
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* track
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* via
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* zone
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### Examples
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(rule HV
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(constraint clearance (min 1.5mm))
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(condition "A.NetClass == 'HV'"))
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(rule HV
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(layer outer)
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(constraint clearance (min 1.5mm))
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(condition "A.NetClass == 'HV'"))
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(rule HV_HV
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# wider clearance between HV tracks
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(constraint clearance (min "1.5mm + 2.0mm"))
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(condition "A.NetClass == 'HV' && B.NetClass == 'HV'"))
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(rule HV_unshielded
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(constraint clearance (min 2mm))
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(condition "A.NetClass == 'HV' && !A.insideArea('Shield*')"))
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### Notes
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Version clause must be the first clause.
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Rules should be ordered by specificity. Later rules take
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precedence over earlier rules; once a matching rule is found
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no further rules will be checked.
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Use Ctrl+/ to comment or uncomment line(s).
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### Expression functions
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All function parameters support simple wildcards (`*` and `?`).
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A.insideCourtyard('<footprint_refdes>')
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True if any part of `A` lies within the given footprint's courtyard.
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A.insideArea('<zone_name>')
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True if any part of `A` lies within the given zone's outline.
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A.isPlated()
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True if `A` has a hole which is plated.
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A.isDiffPair()
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True if `A` has a net that is part of a differential pair.
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A.inDiffPair('<net_name>')
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True if `A` has net that is part of the specified differential pair.
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`<net_name>` is the base name of the differential pair. For example, `inDiffPair('CLK')`
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matches items in the `CLK_P` and `CLK_N` nets.
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A.memberOf('<group_name>')
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True if `A` is a member of the given group. Includes nested membership.
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A.existsOnLayer('<layer_name>')
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True if `A` exists on the given layer. The layer name can be
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either the name assigned in Board Setup > Board Editor Layers or
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the canonical name (ie: `F.Cu`).
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NB: this returns true if `A` is on the given layer, independently
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of whether or not the rule is being evaluated for that layer.
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For the latter use a `(layer "layer_name")` clause in the rule.
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### More Examples
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(rule "copper keepout"
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(constraint disallow track via zone)
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(condition "A.insideArea('zone3')"))
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(rule "BGA neckdown"
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(constraint track_width (min 0.2mm) (opt 0.25mm))
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(constraint clearance (min 0.05mm) (opt 0.08mm))
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(condition "A.insideCourtyard('U3')"))
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# prevent silk over tented vias
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(rule silk_over_via
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(constraint silk_clearance (min 0.2mm))
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(condition "A.Type == '*Text' && B.Type == 'Via'"))
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(rule "Distance between Vias of Different Nets"
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(constraint hole_to_hole (min 0.254mm))
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(condition "A.Type =='Via' && B.Type =='Via' && A.Net != B.Net"))
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(rule "Clearance between Pads of Different Nets"
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(constraint clearance (min 3.0mm))
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(condition "A.Type =='Pad' && B.Type =='Pad' && A.Net != B.Net"))
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(rule "Via Hole to Track Clearance"
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(constraint hole_clearance (min 0.254mm))
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(condition "A.Type =='Via' && B.Type =='Track'"))
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(rule "Pad to Track Clearance"
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(constraint clearance (min 0.2mm))
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(condition "A.Type =='Pad' && B.Type =='Track'"))
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(rule "clearance-to-1mm-cutout"
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(constraint clearance (min 0.8mm))
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(condition "A.Layer=='Edge.Cuts' && A.Thickness == 1.0mm"))
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(rule "Max Drill Hole Size Mechanical"
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(constraint hole (max 6.3mm))
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(condition "A.Pad_Type == 'NPTH, mechanical'"))
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(rule "Max Drill Hole Size PTH"
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(constraint hole (max 6.35mm))
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(condition "A.Pad_Type == 'Through-hole'"))
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# Specify a larger clearance around a particular diff-pair
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(rule "dp clearance"
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(constraint clearance (min "1.5mm"))
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(condition "A.inDiffPair('CLK')"))
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# Specify a larger clearance around any diff-pair
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(rule "dp clearance"
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(constraint clearance (min "1.5mm"))
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(condition "A.isDiffPair() && A.NetClass != B.NetClass"))
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