ASSURA blackbox LVS问题请教

dyandwanzi

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基於無 gds 數據的標準單元 LVS ，所以只能將標準單元設置成 blackbox (我沒有用?blackboxcell，因為extract rule裡沒有找到 pinlayer的定義)。現在的問題是ASSURA在提標準單元版圖時，會多提出pin。比如CLKBUFX4這個單元schematic pin: Y A VDD VSS，layout pin: Y A VDD VSS avC9 avS10。不知道avC9 avS10從哪裡來（用的是arm sage-x的庫，應該單元內部都有襯底阱接觸，會不會是這個？）？那麼正確的基於無gds資料的標準單元ASSURA LVS是什麼呢？
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LVS用的 GDS 數據來自 Encounter ， streamout 的時候選擇將標準單元 pin 的名字導出並用相應的層號 map 。然後將此數據streamin到virtuoso（用默認設置），導入的版圖中標準單元內部只有 metal1層和相應pin的label。
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veteran

就如你所說，正統的Assura blackbox flow就是要在extract rule中加入pinlayer的定義，然後使用?blackboxcell去run LVS。
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但改extract rule的過程，大約分成二步：
' ?$ ~) ^. m; d$ `* c+ D1. Add pinLayer() description in layerDefs() part
2. merge it with normal metal layer by using geomOr().
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可參見以下sample:
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drcExtractRules(
layerDefs( "df2"
nwell = layer( "nwell" )
& ^  D9 P' ]% ynimp = layer( "nimp" )
pimp = layer( "pimp" )
4 K, S4 R' z7 ?oxide = layer( "oxide" )
pres = layer( "pres" )
9 a: [1 `: [& @9 A. ]( J2 p8 Zpoly = layer( "poly" )
" z& Q2 C- L) I; M8 J& S8 a& {contact = layer( "contact" )
$ A. {" t" m) Ametal1 = layer( "metal1" )
via = layer( "via" )
metal2 = layer( "metal2" )
( d6 d# _5 q+ M4 c1 ]. g. x) _polyPin = pinText( "poly" )
5 J! a* `% T7 j; l: ^" F4 W6 smetal1Pin = pinText( "metal1" )
% |1 d6 u% D- |4 ]- ^7 f% Kmetal2Pin = pinText( "metal2" )
metal1BBpin = pinLayer( "metal1" ) ;reads in dfII black box
pins on metal1
substrate = cellBoundary( "*" )
, u* O$ W+ {5 r);end layerDefs section
' I- t, v: j% C! H;Define p-substrate region
2 N, E2 D! [; A* t+ J* E# c) M;-------------------------
- c- W' z3 s5 mpsub = geomAndNot( substrate nwell )
' y# {5 k. {% Z- \;Define device recognition shapes and device terminals
. s+ G/ i5 s0 B- ?% u;----------------------------------------------------
: z9 |- z$ D3 W/ O8 N# J; Cndiff = geomAnd( oxide nimp )
pdiff = geomAnd( oxide pimp )
* ]3 v% F/ I" m+ C$ Ungate = geomAnd( ndiff poly )
1 y# S2 V( K+ l( b6 @9 L# Knsd = geomAndNot( ndiff poly )
0 E0 U& ]6 V+ H) ?pgate = geomAnd( pdiff poly )
: p7 o* o1 g3 c0 t/ p! q2 c; Dpsd = geomAndNot( pdiff poly )
presBody = geomAndNot( pres via )
presTerm = geomAnd( pres via )
;Merge black-box pins read in from pinLayer command with
conductive layer
6 U7 d, s3 h8 H% `" A1 a, P;---------------------------------------------------------------
' x: B( f( _" ]4 Z8 ?. I--------
* v' k7 k' j# {: w9 }9 B: H2 kmetal1 = geomOr( metal1 metal1BBpin )
& q% [8 }) p& s; U;Define connectivity of layout
+ @- J/ O. M0 d1 E6 D9 V0 l;-----------------------------
2 y1 y* }$ w  i) N) qgeomConnect( via( via metal2 metal1 presTerm )
3 ~0 o( G" @2 f& S6 G+ Ovia( contact metal1 poly nsd psd )
label( polyPin poly )
( u/ {( t- R& p  zlabel( metal1Pin metal1 )
label( metal2Pin metal2 )
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# A( U% D/ u# ?, W9 j9 W( ~* ngeomStamp( psub psd error )
8 B8 p/ N, R4 c- dgeomStamp( nwell nsd error )
2 Y: `' U0 h$ x9 L) \( V5 W....................
===========================================================
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$ n5 k6 O: F; C6 N試看看囉..
Veteran