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李明宗伟 发表于 2013-8-1 21:27 & e! [; r, i& @1 A% w& n
什么是显示长度,什么是实际长度啊
* ], H |% R) r# N+ 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
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1 J' F8 I0 r; p1 y9 P Net Name: XM1_DATA15" v% N6 s8 o5 y/ ]. L# l
Member of Bus: XM1-D16 s6 m; ~4 D" u$ P( } f" g
( y1 t1 }( Z! G" b2 D' J( U3 f# o Pin count: 2+ u7 }" T" ~4 `: c* f
Via count: 4% Z/ ^0 t- t, P& I) Q$ L5 j1 c
Total etch length: 903.28 MIL ! T# T0 r e2 V- }8 c3 m5 ?" i$ M
Total manhattan length: 430.73 MIL: F" Z, K7 k! O. h" h
Percent manhattan: 209.71%
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# J( |5 K; V( G& G# N Pin Type SigNoise Model Location8 v# ?6 G6 x& |5 \/ G; N. S
--- ---- -------------- --------
, y! f# w/ h" t, k. R( V U4.B9 UNSPEC (-1516.62 685.41)8 n, F* \0 ^9 V1 T b/ j. R- n' a
U1.C17 UNSPEC (-1184.58 784.10)
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$ v4 o! }9 r; \ No connections remaining
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! H8 H5 C; h" ^1 w Properties attached to net) m I' K x/ E% B9 d) P
BUS_NAME = XM1-D1- @2 e- r: X" B7 Y7 {0 Y
ELECTRICAL_CONSTRAINT_SET = XM1_DATA8
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Electrical Constraints assigned to net XM1_DATA15$ p0 M2 A/ i* h! e9 t5 W
relative prop delay: global group XM1-D1 from U1.C17 to U4.B9 delta=0.00 MIL tol=20.00 MIL1 a; O% L5 g4 L* U2 r9 b) `
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Constraint information:
. p/ j5 w3 y* X. q (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
2 r0 S- u3 \: L (-1184.58,784.10) pin U1.C17,UNSPEC,BOTTOM/BOTTOM6 Z, K A( z8 r1 ~+ N# z
(-1184.56,784.10) via GND07/BOTTOM
x! e7 [1 A& w( z 18.13 MIL cline GND07& ~ v7 p: O& U; N: v: A- D
(-1197.38,771.31) via GND02/GND07
: ~* y! h& n' t9 |* w/ H 639.6 MIL cline ART06
$ P3 }. b" o& d+ e8 s) a (-1368.74,567.43) via GND02/GND07
) z5 ?% U- Y! t. h" M' G) x 30.94 MIL cline GND07
1 U# p R; _% U2 e* b& j (-1393.13,581.82) via GND07/BOTTOM, A0 P) r" k" Q1 F
214.59 MIL cline BOTTOM
3 }3 K# v2 q+ `8 y, g% C4 ~ (-1516.62,685.41) pin U4.B9,UNSPEC,BOTTOM/BOTTOM,Zall=32 MIL
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BUS : XM1-D18 E4 f, ~# B [" o+ H+ |- V
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