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李明宗伟 发表于 2013-8-1 21:27 / H$ Z8 Z0 ] K* ~" V3 F: H
什么是显示长度,什么是实际长度啊 8 M" g; A0 n% x% A; p
show 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
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Net Name: XM1_DATA15/ Z6 ?" X N: C- V+ S- E, t
Member of Bus: XM1-D1; j3 n! s3 n1 c- @# d0 U+ u6 [
! o. Y0 z/ @3 C* W; o Pin count: 2
$ Q/ W( y. J/ Y: j" I9 M Via count: 4
# W& Q8 s; P/ }. y( Q7 L: [ Total etch length: 903.28 MIL 5 u3 h# A2 u% t& L, _8 E% ?
Total manhattan length: 430.73 MIL
8 M0 N5 j( U4 W4 j; W8 q6 K8 K Percent manhattan: 209.71%4 I- W4 W0 }" H: N
9 f! Z! k" \5 d! X: e' n Pin Type SigNoise Model Location
: q ?4 ?4 X" H0 v --- ---- -------------- --------
# l, `! J5 i- C6 A& u9 |' p# p, V( v U4.B9 UNSPEC (-1516.62 685.41)
' ], G6 n( T& b( G7 ?3 S ~$ q U1.C17 UNSPEC (-1184.58 784.10). n! a, V/ P/ P- X
: h3 f( h9 s) k( Z No connections remaining
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7 k f+ a! C" _1 k$ ?. J Properties attached to net
& m/ \% o7 i; |3 T) _1 P BUS_NAME = XM1-D1
* S6 G' e* s0 }, n/ H, w9 w ELECTRICAL_CONSTRAINT_SET = XM1_DATA8
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; D$ C$ w; O X: B Electrical Constraints assigned to net XM1_DATA15
$ B: `! _% H2 N+ T+ O$ W# W relative prop delay: global group XM1-D1 from U1.C17 to U4.B9 delta=0.00 MIL tol=20.00 MIL) m3 ?9 A" }, ^4 ^( z" o7 x
- T6 n2 d2 }, `9 p2 a; F6 d$ x* a Constraint information:
8 H- ]* m( c) K8 m4 F (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, Y+ `; V6 R3 P; G7 D4 k
(-1184.58,784.10) pin U1.C17,UNSPEC,BOTTOM/BOTTOM
0 S8 u$ r# d( V4 Z# M0 O X (-1184.56,784.10) via GND07/BOTTOM- J# |' F% H Q2 c# c" Q; b
18.13 MIL cline GND07
' q0 r# O. S8 E% L (-1197.38,771.31) via GND02/GND07
1 x0 |; \( l: X$ R 639.6 MIL cline ART06: p' e: a; @* E; d3 n
(-1368.74,567.43) via GND02/GND07: L$ Z+ r+ W# e5 d
30.94 MIL cline GND07
+ P8 B5 Y. }3 N- \2 { (-1393.13,581.82) via GND07/BOTTOM* j# y8 T$ |9 Y7 T
214.59 MIL cline BOTTOM
4 k$ z2 D8 |. R3 n9 a/ H: o (-1516.62,685.41) pin U4.B9,UNSPEC,BOTTOM/BOTTOM,Zall=32 MIL
1 N! V3 @, {* q' v Member of Groups:
: V4 y/ D0 u7 W BUS : XM1-D1) i# F% _2 p4 l+ m, @0 R& _" O, E
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