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这是我设置XNET等长后,布线完成对线进行show element 弹出的信息:, O u, ]/ I8 }5 D J! t! R S
我明明设置的XNET是 是 Total Ecth Length :min = 2000 MIL , max = 2100 MIL" M9 _" @9 [2 b P* _, ^/ L: R% d: N% s
在Reletive propagation delays 中设置的公差是 0:100 (mil) K$ s$ n m' h/ P1 D: b
为什么会出现“ (RDly) (Xnet=IDE_D9) U3.D17 to IDE1.6 min= 2191 MIL max= 2391 MIL actual= 2362 MIL6 Z3 O% [6 a& {
target= (IDE_D9) U3.D17 to IDE1.6”2 ^3 a2 M# ^, K) ]( g/ A
这个结果?" ]; F- ?" g' `$ w# {
- g" c) X5 D! k/ \- y附:该线的网络具体情况是从 U3 .D1------ RN(排阻) --------0(过孔)-------------- IDE1.6- Z2 l5 \5 u, v. M# |/ x
|1 X6 Q/ G! o6 G/ I; I0 d: Q
-----------------------------------CF1.48
/ Z' r, W* p* D2 _0 K9 o6 m
. f; a- t% I# ?我的意图是设置 U3.D17 到 IDE1.6 线长为2000 ~ 2100 (MIL)而不计 过孔到CF1.48 线长。
* e. {' a1 x9 X: M, h( n我这样设置对不对啊?应该怎么做呢?
+ W8 e; q0 U" ]" _ ~
/ ~7 @- W p5 Y: l0 T. {第二个问题:RDly 与 totE 分别表示什么?
; L5 S/ M; K4 o/ d! a% ^2 z2 ~/ I" H$ v& @
" m1 L) w2 `" ]' h' ?LISTING: 1 element(s)" L3 p9 V8 f0 o/ k# G6 Z6 h8 Q
< NET >
: c( V8 z3 R" N5 ^, m) f- P Net Name: IDE_D9% W# I: ?) P; g0 z. {
Member of XNet: IDE_D9
: `6 V' u) H. g/ O5 T Member of Bus: IDE_DATA_BUS' P/ B! {0 \* G1 b4 p0 q) ]5 _
Pin count: 3
: L1 C; ^, O9 a/ T) T Via count: 2
% \$ b/ v5 a; V1 X# m Total etch length: 2662 MIL7 t* K& h+ t) T6 e
Total manhattan length: 2064 MIL5 D* [8 H. C( i: |
Percent manhattan: 128.97%
* q; ^0 h1 @% c Pin Type SigNoise Model Location/ v2 O9 N: E) A( u, O8 T
--- ---- -------------- -------- X. F l3 c' e* @- I$ \" u. a O
IDE1.6 BI CDSDefaultIO (5901 376)$ ]+ E( x6 X7 |( }' d
CF1.48 UNSPEC (6137 1525) T; `* M3 }& L3 q2 d- z2 a7 H
RN6.1 UNSPEC RN6_22 (6623 1718)
; M* J7 K. ~6 w/ s8 D% c No connections remaining/ V2 ?+ u% Z) v+ d2 s# \
Properties attached to net
" L6 Y/ _9 ?3 I+ _- u BUS_NAME = IDE_DATA_BUS
& _/ r, k# x( D8 V+ M4 n LOGICAL_PATH = @ls2f_motherboard.schematic1(sch_1):ide_d9
: L& S& W5 d X% J( i1 S NET_SPACING_TYPE = IDE
) T! A+ n6 E; n1 ?; J( ?# O TOTAL_ETCH_LENGTH = 2000 MIL:
3 D- \' k8 F" P' v+ J6 x Electrical Constraints assigned to net
7 G2 V; W8 ]( p" \5 a; t# m& W total etch length: min=2000 MIL max=none
1 F* U) ]: ^0 t4 G, W Constraint information:
" u& ?+ f2 X: X ] (RDly) (Xnet=IDE_D9) U3.D17 to IDE1.6 min= 2191 MIL max= 2391 MIL actual= 2362 MIL6 U# e. F0 P: ^( {- A
target= (IDE_D9) U3.D17 to IDE1.6! _) |; P( K$ z* t, M
(6802,2198) pin U3.D17,BI,TOP/TOP% v* W) n: L7 z, ]% S
506 MIL cline TOP; w4 I ^- D& h) B
(6623,1782) pin RN6.2,UNSPEC,TOP/TOP
& V. X& ]- s6 y0 M, O( s% q) x (6623,1718) pin RN6.1,UNSPEC,TOP/TOP
# G% h; R" d) D1 n 41 MIL cline TOP
3 p# F T' }1 ]# h5 V+ R (6623,1677) via TOP/BOTTOM$ J" A3 `: B: F0 B ]* I5 q
746 MIL cline TOP$ I% H( H5 |2 f9 e- e
(6597,942) via TOP/BOTTOM
; A- y8 _* D& X+ f 1070 MIL cline TOP
# g% Y3 x3 O+ c0 ~+ y% C& E7 b, Z (5901,376) pin IDE1.6,BI,TOP/TOP; G- H$ I0 n- ` V" a& ~, |( B
(totE) (Xnet=IDE_D9) min= 2000 MIL actual= 3168 MIL0 M& z4 Q! p( B- u
805 MIL cline BOTTOM4 s5 ~) z. p$ d7 Y. ~
41 MIL cline TOP4 m _2 n6 |9 r0 y V
746 MIL cline TOP
( r# R4 x x' n 1070 MIL cline TOP; Q: ~3 b( s+ n( A
506 MIL cline TOP1 a$ y1 S5 o" c0 X9 n; p
Member of Groups:2 T& z8 [- F0 `. m+ w
XNET : IDE_D9
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先谢谢了。。 |
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