cadsoft eagle 4.5 사용자 설명서
Maximum number of...
mnVias
=
20
...Vias per connection
mnSegments
= 9999
...Wire segments per connection
mnExtdSteps
= 9999
...Steps 45 deg. against preferred direction
mnRipupLevel
=
100
...Ripups per connection
mnRipupSteps
=
300
...Ripup sequences per connection
mnRipupTotal
=
200
...Ripups at the same time
Track parameters for...
tpViaShape
=
Round
...Via shape (round or octagon)
PrefDir.1
=
|
Preferred direction in the given layer
PrefDir.2
=
0
Symbols:
0 - / | \ *
...
0 : Layer not used for routing
PrefDir.15
=
0
* : No preferred direction
PrefDir.16
=
-
- : X is preferred direction
| : Y is preferred direction
/ : 45 deg. is preferred direction
\ : 135 deg. is preferred direction
| : Y is preferred direction
/ : 45 deg. is preferred direction
\ : 135 deg. is preferred direction
7.12 Practical Tips
This section presents you with some tips that have, over a period of
time, been found useful when working with the Autorouter.
Look on these examples as signposts suggesting ways in which a board
Look on these examples as signposts suggesting ways in which a board
can be routed. None of these suggestions guarantee success.
General
The layer costs (cfLayer) should increase from the outer to the inner
layers or be the same for all layers. It is unfavorable to use lower values
in the inner layers than in the outer layers. This could increase the nee-
ded routing memory enormously.
The Autorouter can't layout wires as arcs.
The Autorouter can’t set micro vias!
The Autorouter can't layout wires as arcs.
The Autorouter can’t set micro vias!
Single-Sided Boards
There are two procedures, depending on the kind of layout:
In the simplest case, only layer 16, Bottom, is active. No preferred direc-
In the simplest case, only layer 16, Bottom, is active. No preferred direc-
tion is defined. Select a suitable grid and run the Autorouter.
If the layout is rather more complex, it may be possible to achieve a us-
If the layout is rather more complex, it may be possible to achieve a us-
able result with special parameter settings. Please take a look at the pro-
ject named singlesided, which can be found in the eagle/projects/examples
directory. This example project comes with various control files (*.ctl),
which are optimized for singlesided routing.
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EAGLE Manual