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一个DDR时钟差分线设置为T型走线,但是连上线后,出现DRC错误。
3 G% l) M1 v: z4 p请教一下,是哪里出错了呢,正确的走线方式又是怎么样的呢?
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# T5 u- ?, P* x+ e错误如下:
% c0 V2 F6 b! Y7 C9 QLISTING: 1 element(s)
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$ f- F9 U& \- a; K) _3 T < DRC ERROR >) }; s$ I7 ~, H: p+ r- K
/ {4 @/ o3 X* _$ ~ Class: DRC ERROR CLASS* m# Q3 h/ y0 C4 z L: p
Subclass: ALL. e0 K, a" d" |5 |: l6 m* D1 i
Origin xy: (-772.35 1153.00)& n7 n6 X( g9 k0 W; Y9 p4 `- m7 D
Constraint: Net Schedule Topology7 V5 y; N( Q, a8 x7 C& N+ @% N
Constraint Set: ECS21 x* U( P. {9 y& {$ x
Constraint Type: NET ELECTRICAL CONSTRAINTS
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# R9 z1 R6 w* M2 J Constraint value: VERIFY
9 R! [2 f1 N- G' f5 s1 P Actual value: DOES NOT VERIFY7 F5 W+ ~; v! E$ D# b2 t
- _& p8 M- {+ b& V& \: K - - - - - - - - - - - - - - - - - - - -
7 g2 A9 j* J6 X* ?+ N ]# W" P9 g Element type: SYMBOL PIN# @9 \: O8 m5 w) ` H D9 D
Class: PIN
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PIN: C254.1
" N( I4 p4 T+ o+ [* d. w% x8 @ pinuse: UNSPEC
' |' {% ^9 m! t; q$ S8 @) j0 y location-xy: (-772.35 1153.00) 6 B" @5 x/ L$ j! L C- h+ E
part of net name: DSCK#
# {+ ^- X. P! a5 ]0 J& N3 T - - - - - - - - - - - - - - - - - - - -" [1 z0 a$ A7 B$ ]
Element type: RATSNEST TPOINT
' D# f# Q" p5 m* |( H! O8 B Class: DRC ERROR CLASS
% U& n1 Q7 ?0 w7 A+ ~ Subclass: TOP
# a* \8 _3 u3 C/ s- o% k" v" U( d# ~5 k" O8 i. g; Y
Name: DSCK#.T.1
) r5 ~) o% Z$ D" j5 T# f; H9 m/ y: N" V( _( r6 P j0 E0 q( B% B
(-745.00 970.00)
% ?) h3 T9 z4 S: l' F1 S
0 d. j8 a3 V- a+ w: o; E/ x/ V - - - - - - - - - - - - - - - - - - - -+ b6 a( `, A. w" c y
( e; a& R* S! V3 a6 W, p- ]
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