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試試 Net 指令- J! @: a4 m6 u7 X
Layer operation
% K5 p6 |. }$ g8 W. G! U: S4 N, bNET layer name [… name]
- u( L1 U* u6 M5 O' s6 d+ cParameters9 ^' [" Y9 ~1 a& S9 ^; t. Y: r, d0 W
• layer8 `: M& S* K$ f' X1 D
A required original layer or layer set, or a derived polygon layer.- w+ ~8 Y+ r# `* G
• name- j$ i+ }) g! T7 t2 m
A required name of a net, which can contain one or more question mark (?) characters. The
- w" A \5 K- Q& X& Z0 c? is a wildcard character that matches zero or more characters. You can specify name any
* @6 {6 G0 I% J6 xnumber of times in one statement. The name can be a string variable (see Variable).
, G" a8 U: ~$ l% X% {. v. e4 QDescription
$ e% _& f7 `, p. |: A5 U4 J4 MSelects all layer polygons that belong to the net having the specified name. To avoid ambiguity,3 K& K& ]+ X1 [# }* R: _
you must use the parameters in layer name order.* x$ i4 _8 l: i' x
Note6 V/ d" r: X7 i6 ?( R( X
Do not use this operation to obtain net shorting information. The Net operation uses net
# S( z/ X/ W, l2 T) A+ v2 cnames assigned by the connectivity extractor. If the connectivity extractor encounters7 j. ~9 D1 C! f! J1 B5 r
shorted nets, it assumes it has found a single net, and assigns it one name.
6 i. l2 e' B; J) i3 tThe connectivity on layer must be established through a connectivity operation.
: `# e& }) {! E/ Q' jSee also Not Net, Net Area, Connect, Sconnect, and Stamp.
; K1 J% O4 B& o4 x% B9 U: HExamples8 p1 h* i# j8 r' m/ i2 q; e E% u3 x1 Q
METAL_SP {: ~0 q5 e5 c! w! m2 i
@ VDD metal must be spaced at 4.5 microns
/ s( o# [1 r: B* C6 i3 `@ VCC metal must be spaced at 4 microns, a. t7 M+ D- Z$ v
vdd_metal = metal net vdd" C5 `5 R0 v/ O9 I1 c
vcc_metal = metal net vcc% k0 ]2 s% y& L+ b& o
external vdd_metal < 4.5/ a$ J* R" z, u4 N: n' P* g- H6 ~
external vcc_metal < 4.0 |
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