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Database commands: layer
Syntax: layer [layer [option] [args]]
This command sets or queries some basic parameters of routing layers.
If no arguments are given, a listing of the routing layers with their
present parameter values is printed.
The first argument is a layer name or 1-based routing layer index. If
only this is given, the parameters for the given layer are printed.
The option that may follow indicates the parameter. It can be
one of the following.
- -n
This indicates the layer name. If a word follows, the layer will be
given this name. If no word follows, the present layer name will be
printed.
- -l
This indicates the user layer number. This may indicate the GDSII
layer number. It is a user parameter and not used by the router. It
must be a non-negative integer if given. If a number follows, it will
be assigned, otherwise the present value is printed.
- -t
This indicates the user type number. This may indicate the GDSII
datatype number. It is a user parameter and not used by the router.
It must be a non-negative integer if given. If a number follows, it
will be assigned, otherwise the present value is printed.
- -w
This indicates the default wire width used for routing, in microns.
It must be a positive number. If a number follows, it will be
assigned, otherwise the current value is printed.
- -p
This indicates the pitch of the routing, meaning the wire width plus
minimum spacing between wires. This must be a positive value larger
than the wire width. If a number follows, it will be assigned,
otherwise the current value is printed.
- -d
This indicates the preferred route direction, which can be horizontal
of vertical. If a word follows, the first character of which is `h' or `v', the direction is set. Otherwise, the current
direction is printed.
Next: Database commands: newlayer
Up: The database commands
Previous: Database commands: obstruction
Contents
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Stephen R. Whiteley
2017-02-17