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李明宗伟 发表于 2013-8-1 21:27 ' d8 m1 I+ }1 O
什么是显示长度,什么是实际长度啊 4 j5 B3 I0 x: b) d3 W: E5 ?
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 q! d1 d# b7 ] ]1 _
1 \8 Z8 \- g4 F9 }5 [: Q* _( z& ?+ u; S( A( y0 D$ x
Net Name: XM1_DATA15
0 ?/ E) M( t( d9 @9 I: _/ H s Member of Bus: XM1-D14 e2 {( C8 o P) r6 O5 T
- Q7 E' z, U5 c* R1 T9 k8 C
Pin count: 28 T8 I1 Y% i0 P
Via count: 4
" o7 @3 o6 l9 }. A7 _5 O Total etch length: 903.28 MIL
+ p6 W3 ]6 C& i( p3 W; f W* P Total manhattan length: 430.73 MIL
# V1 [+ w: y2 Q1 e8 i1 u% K Percent manhattan: 209.71%
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- N2 ]5 @6 ?8 O6 x3 O8 a/ t Pin Type SigNoise Model Location2 f9 O" s4 s! A8 R
--- ---- -------------- --------- q1 n8 @8 E; T3 t
U4.B9 UNSPEC (-1516.62 685.41)
8 Z$ E" q6 X8 T U1.C17 UNSPEC (-1184.58 784.10). u5 u+ ]. K* q# T1 L3 ]
# c8 H+ K! k. Q$ r0 h1 j No connections remaining/ y/ k" d! m; A5 b9 O3 { t" w+ ]
7 H/ P% q5 W6 }$ t$ U1 {- k
Properties attached to net
8 \+ H7 r% H: o2 p% Q) U BUS_NAME = XM1-D17 v! W% F. ^2 h+ ^2 |5 M
ELECTRICAL_CONSTRAINT_SET = XM1_DATA8$ z. v0 w# |/ I; t( ]
3 R" [' m$ F7 Y2 \( Y5 g; l' Y Electrical Constraints assigned to net XM1_DATA15
3 B8 p# Z" I/ X2 O! _3 q relative prop delay: global group XM1-D1 from U1.C17 to U4.B9 delta=0.00 MIL tol=20.00 MIL
6 p2 l3 i! E" x$ _& _, O' m4 T
9 O9 O0 Z5 N6 r, \ Constraint information:% F' a# f4 O8 j7 S0 K$ 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! P9 W) O* w2 h* {1 E. n
(-1184.58,784.10) pin U1.C17,UNSPEC,BOTTOM/BOTTOM: E3 J3 O2 e% J# Z2 ?
(-1184.56,784.10) via GND07/BOTTOM) m {& N! J/ _+ \4 W" i
18.13 MIL cline GND07- u- L0 l2 f5 }0 v- L$ H- Q
(-1197.38,771.31) via GND02/GND07
! l1 K, Q8 ~2 M' I; J) I( L 639.6 MIL cline ART06) O- @8 C3 q9 a8 s
(-1368.74,567.43) via GND02/GND07
8 A; X0 {3 K* s 30.94 MIL cline GND07
6 B4 A: H, g. a" W8 m: \, Z: R (-1393.13,581.82) via GND07/BOTTOM
3 h, R5 i- K7 B& ^ 214.59 MIL cline BOTTOM
- v0 G) [( {( B9 M+ `4 ^ (-1516.62,685.41) pin U4.B9,UNSPEC,BOTTOM/BOTTOM,Zall=32 MIL
/ a4 w7 ?. m/ V0 S* ^2 h& X G W Member of Groups:
4 a. L0 c5 G! H) `. y BUS : XM1-D1- N+ N; n7 M' V% o' \
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