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李明宗伟 发表于 2013-8-1 21:27 + q' l6 A% J# x* W5 Z* b u2 a
什么是显示长度,什么是实际长度啊 * s, q, p1 q! Z+ f- {9 w* c
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9 P- B9 o, H- [/ E, B2 I5 v
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" I h5 h3 I6 H/ ]9 g' u Net Name: XM1_DATA15. u( r$ P- c/ I, a
Member of Bus: XM1-D1' I0 m$ }4 P2 z* Y
i& U! F; f! k3 l Pin count: 2
( V: x! d- R0 Y* U, x" e5 r6 y0 R' @ Via count: 4
0 ]; r0 m3 z. H2 Y3 z8 V3 d Total etch length: 903.28 MIL
% \$ u# C- B5 r. e1 W$ P% m Total manhattan length: 430.73 MIL
: R$ ~* A$ \4 u Percent manhattan: 209.71%$ t, G; `+ f/ f
$ @4 T" F0 b* k5 q Pin Type SigNoise Model Location
. Q: e9 _/ ~: R( D+ X. \5 R --- ---- -------------- --------
9 o: J! e' Q0 W9 M+ L, Y3 r U4.B9 UNSPEC (-1516.62 685.41)
7 O: G, |5 b/ i1 V7 g# N& } U1.C17 UNSPEC (-1184.58 784.10)
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3 C0 q: O- O8 Z: V- O No connections remaining, R6 `; E/ |) ?' y3 F& b7 W C
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Properties attached to net
& H: n5 ], c6 R% } BUS_NAME = XM1-D1
' n+ y; P, k) k3 c; Q ELECTRICAL_CONSTRAINT_SET = XM1_DATA8
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Electrical Constraints assigned to net XM1_DATA15
% K6 L* l, D! c* p5 b. E ^% c; o relative prop delay: global group XM1-D1 from U1.C17 to U4.B9 delta=0.00 MIL tol=20.00 MIL
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/ }$ C( A. L! |3 C! U Constraint information:( t1 h& Y* `( r0 J$ e5 r
(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
/ K1 ^9 D: ~ m6 h5 \ (-1184.58,784.10) pin U1.C17,UNSPEC,BOTTOM/BOTTOM
3 F9 B* q7 `" L9 j4 I4 n. S' N (-1184.56,784.10) via GND07/BOTTOM
0 F9 q2 C/ b* Z4 ^4 {5 e9 k, N% B9 | 18.13 MIL cline GND07
+ Y2 v: z* K- I5 D8 }0 X5 M5 R) k$ x (-1197.38,771.31) via GND02/GND073 s2 N |4 V: q+ v
639.6 MIL cline ART06. D# h. i$ b- r# j* {1 ]1 D& D1 A
(-1368.74,567.43) via GND02/GND07$ W4 J: m/ S% U5 a' l
30.94 MIL cline GND07
% D# o: v# f ?6 K (-1393.13,581.82) via GND07/BOTTOM- M/ e) `1 n( A7 k5 U5 m$ b+ \3 m3 t
214.59 MIL cline BOTTOM9 X" Z! S) @* S1 A5 C5 ^! A
(-1516.62,685.41) pin U4.B9,UNSPEC,BOTTOM/BOTTOM,Zall=32 MIL
' J% T! D: h$ G+ {" h" {: i% F" U# {' V6 Q Member of Groups:
. ^$ H1 ]3 e& V$ q; G BUS : XM1-D1
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