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李明宗伟 发表于 2013-8-1 21:27 1 x. }+ I$ z4 E- Y, O0 \
什么是显示长度,什么是实际长度啊
7 x) w2 k2 y5 `! o: n" z! mshow net 的时候显示如下,为什么会出现BOTTOM/BOTTOM,Zall=32 MIL,不知道哪边设置错了9 s& s0 j8 M# s7 J
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Net Name: XM1_DATA15
5 k z: U7 y" Y; q7 W; a Member of Bus: XM1-D1
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Pin count: 2
% @" k3 H9 n* C- o9 U Via count: 4
% z9 O. [& O1 m6 p# ^" D& ? Total etch length: 903.28 MIL + H; P& X( c/ `8 W" _( Q4 q
Total manhattan length: 430.73 MIL; n [1 P( h* @" p1 x( q Z
Percent manhattan: 209.71%6 J. O9 n3 l) @* u7 z+ g8 g3 K" u
4 }) \+ b& {4 L* I. a9 v! H Pin Type SigNoise Model Location
+ L+ r, N* D/ Z" X+ a4 M9 x1 A --- ---- -------------- --------' s6 U0 v. Q' U" ]" b, J2 N
U4.B9 UNSPEC (-1516.62 685.41)5 l4 ^/ [- P3 W; z! X1 l ]& D$ K8 W
U1.C17 UNSPEC (-1184.58 784.10)1 Y1 H$ d3 i) ]2 a8 N
5 p4 [' p, Z5 Z H' N No connections remaining
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Properties attached to net
# {, S) j7 C8 `( C4 V, V# V+ E BUS_NAME = XM1-D1: O$ L+ d8 q# _1 l4 v6 S
ELECTRICAL_CONSTRAINT_SET = XM1_DATA83 Y9 D! d5 w+ n! S- ]' P: x
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Electrical Constraints assigned to net XM1_DATA15
7 ^+ j" _* `0 P( B+ d8 g- c relative prop delay: global group XM1-D1 from U1.C17 to U4.B9 delta=0.00 MIL tol=20.00 MIL0 p- p0 j/ c3 z: ]" g5 n* S! g, `4 f
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Constraint information:3 A+ O! [5 K1 l& R( E3 G: X% j/ r( Y, G
(RDly) U1.C17 to U4.B9 min= 919.3 MIL max= 959.3 MIL actual= 935.28 MIL target= (XM1_DATA12) U1.C18 to U4.D1% V2 }! _& N5 |0 @1 {
(-1184.58,784.10) pin U1.C17,UNSPEC,BOTTOM/BOTTOM: c4 e7 X: {* E5 C& @
(-1184.56,784.10) via GND07/BOTTOM
, L' |5 X& O/ `0 K, y 18.13 MIL cline GND072 f! N; w# Q: s% _: d* o
(-1197.38,771.31) via GND02/GND07
. O& J, v% b ~' w: ~+ z, f 639.6 MIL cline ART06/ i7 \& e' ^* ]6 a7 [- T8 l: y
(-1368.74,567.43) via GND02/GND072 g0 b3 o( D7 D; x6 x! ?
30.94 MIL cline GND076 m) ^8 ~5 \' g: b/ h
(-1393.13,581.82) via GND07/BOTTOM
/ P+ w: G- [4 @+ [4 y 214.59 MIL cline BOTTOM
5 h1 k Q: A4 s4 K! _0 n) H7 b (-1516.62,685.41) pin U4.B9,UNSPEC,BOTTOM/BOTTOM,Zall=32 MIL
2 Y/ d* W6 m, l+ W Member of Groups:) q0 D1 H# q4 y) Y0 J: `/ e
BUS : XM1-D1
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