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本帖最后由 John-L 于 2009-8-14 10:10 编辑 , n, i1 C. w( ^8 \- o1 ]. W
' i4 W7 M* I2 w! u: P8 X做到下面的要求,allegro NET-IN就轻松多了:, h% d: J( ]7 P6 f# T: H; [
' e6 `" ~2 M4 y+ p( rBest practices for Capture-Allegro
@' l+ L8 Y+ sBest practices for preparing a library for Capture-Allegro PCB Editor! `/ x6 J `0 G! D7 p
flow2 H& F0 L) |2 T* ?* g
􀂃 Limit part and pin names to 31 characters
# o# G0 {5 K# u8 U0 w􀂃 Use upper case characters for part/symbol names, part references
/ c7 Q( Y; ] V- Pdesignators, and pin names% g/ k s! }3 U( A; \$ ?- a2 _
􀂃 Do not use special characters to assign part names, references
0 m' w- @1 G/ ?8 i2 |) e1 hdesignators, and pin names
$ `4 Q- F: k3 b. o& q" z8 k' Y􀂃 Do not use duplicate pin names for pins other than power pins
. G3 n. ]0 n' b􀂃 For multiple power pins with the same pin names, do not make some0 k1 u! u1 V" v [( E( s
pins visible and other invisible
+ R- I% S3 |' i3 C' u, F/ f􀂃 Do not use "0" as a pin number
6 T8 Y6 o& S1 t- F) x6 VBest practices for Capture design for Allegro PCB Editor
1 _4 C3 w, @- E( i9 `! @􀂃 While defining a net list alias or a net name+ E1 p2 M" ~( E* p
• Keep the maximum length of a net name or alias up to 31
. {% Y! Z. x1 a; Scharacters
! n) w& x/ w% X• Do not use lower case or special characters in a net name
i* O; T1 {) P􀂃 Avoid using "Power Pins Visible" property at design level& b. k, \! H5 [& C2 H1 T6 o7 R- R
􀂃 Use net to connect pins$ O; D! O. `- G- I) e1 Z
• Leave room for assigning a net name. Pin-to-pin connection
2 c" r0 L( t- N0 ^ Cchanges the net name when a user moves a component# `: `. y+ i) s
􀂃 Run the Capture DRC command before generating Allegro PCB Editor
/ o; V2 S( R* X* E' r) ^netlist- b" X3 [- G, T" h2 D' `/ |
􀂃 Set path for Allegro PCB Editor footprint before running Netrev
( h. W" G" h: V1 A( D8 }; XBest practices for smooth back annotation5 Q0 Z3 M+ h) K5 N9 X! l7 w0 b# x) f) x
􀂃 Do not change design name, hierarchical block names, or reference7 m+ ?4 \& j( O2 d8 t9 q% t/ ^
designators in Capture after board files creation
# r8 M6 S& v+ H􀂃 Do not edit a part from schematic in Capture after board file& N$ ^9 D/ S4 m6 ? }& G" L
creation
- _6 f4 g7 Q; c2 A! \􀂃 Do not replace cache as it changes the Source library name and part W' r5 t+ u( y' ]' E
name, in capture
6 B2 w: t' N& i0 W􀂃 Do not change the values of component definition properties in
0 H: `) Z' j7 D7 y. t2 `, Acapture after board files creation6 w+ s* ]# u2 e, P$ I
􀂃 Do not change Design file/root schematic/hierarchical block names; d: y- b. N/ A' x
in Capture after board file creation
2 j& _# m0 H, Q, i1 s9 C" c. [􀂃 Do not add or delete components to or from the schematic design# H* [8 M2 S& V2 T/ G# d/ k
immediately after the board file creation. Add or delete components; R* W0 m4 t1 h) G, n
after finishing the back annotation process: t A) u$ L* [" Y, |9 P3 @% e
- 2 -
. X+ k `& [" v- q) s& b􀂃 Do not add any additional components in Allegro PCB Editor. Instead,5 h ^( k; ]$ Z3 O, ?, K- t: z
add components in Capture and take them to Allegro PCB Editor5 A' ~. v1 a% P: S! V
􀂃 Do not add, rename, or delete a net in Allegro PCB Editor
; U H8 `& |* L* ]. n7 R" t􀂃 Do not change the format for reference designators for parts in
* O& Z1 e' Q! \Allegro PCB Editor as <Alphabet(s)><Numeric><Alphabet(s)> or
8 k; N8 v2 O8 `4 z3 l% P><Alphabet(s)>-<Alphabet(s)># P6 o) q4 b" q! R, F/ ]$ ~9 {" N
􀂃 Run Allegro PCB Editor Dbdoctor before running Back annotation by
|, y8 H, m. \selecting the Database Check command from the Tools menu in Allegro9 |! ]; d/ g$ l. V/ G2 X1 {
PCB Editor, n* v1 _6 V/ i/ C. h% _
􀂃 Make backups of the original design before updating the design with
+ T3 j5 R! X+ Ithe swap information in Capture
2 Z# I# ~# e1 b: i2 t q, U􀂃 Back annotate the design immediately after making the board file." n+ P+ \% R9 }/ Z
Though it does not a mandatory step, back annotating the design) R' \6 q$ H3 `& c
before placing components helps avoid problems in back-annotation
" T6 M) k; i4 [6 k% U( Eat a later stage.& n4 B8 q0 [" }/ b
If back annotation at this stage generates an empty swap file, you
' O q, O7 n& h6 _can proceed with placing and routing the board file. In case any
' h. n9 g. [2 n6 | |problems are detected, you must correct them in the design file and
7 K; w1 v C( \9 f' O% X, G* t+ hgenerate the board file again until an empty swap file is generated. |
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发表于 2009-8-14 10:08
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