|
試試 Net 指令, s, \- { B1 c
Layer operation
3 X% ?1 i' f: X9 P. mNET layer name [… name]4 T! I, |; _8 Q% _% d6 {
Parameters
- E% s' d+ Z8 V. Q% q& H5 W• layer
0 k2 n/ m& _6 q* x6 SA required original layer or layer set, or a derived polygon layer.: G5 p( V4 O+ Y, K
• name! Q4 `: a! ?- o
A required name of a net, which can contain one or more question mark (?) characters. The
* g( @1 {4 h) n: W3 n& P; i! y? is a wildcard character that matches zero or more characters. You can specify name any
5 C% a/ B2 p b! J& gnumber of times in one statement. The name can be a string variable (see Variable)./ W% e- j. I0 x
Description& K$ Y# `' x. O# m. f9 U
Selects all layer polygons that belong to the net having the specified name. To avoid ambiguity,0 k6 B# B5 R' T4 B* `- n& m
you must use the parameters in layer name order.
4 y2 ?' r( g" M# n+ ^Note% K: `: b: o O5 w& L5 _1 X8 i
Do not use this operation to obtain net shorting information. The Net operation uses net6 Q, I4 `, n# M/ h9 O( B9 O
names assigned by the connectivity extractor. If the connectivity extractor encounters# p4 o) A% g. L& H
shorted nets, it assumes it has found a single net, and assigns it one name.2 L' V/ }3 A X& Z' |& ^
The connectivity on layer must be established through a connectivity operation.
. X9 s3 @( f) q7 WSee also Not Net, Net Area, Connect, Sconnect, and Stamp.1 B' n6 n" O/ ~" \0 f& d; o9 P1 T
Examples4 P: P* ?( S3 e! q! q6 {
METAL_SP {. O( [! ?. ?3 M g$ [
@ VDD metal must be spaced at 4.5 microns
) H( @1 X" N0 t. m2 z+ E@ VCC metal must be spaced at 4 microns( D. u7 ]- d y2 C, N- o1 B
vdd_metal = metal net vdd5 O* N x6 N! h3 v
vcc_metal = metal net vcc; F) Z" Z* W) L3 K% E% M5 G
external vdd_metal < 4.5
% p8 F& y0 ^2 b7 \3 Yexternal vcc_metal < 4.0 |
|