ASSURA blackbox LVS问题请教

dyandwanzi

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？

9 ^9 e' B* U# X9 qLVS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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多謝

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。

但改extract rule的過程，大約分成二步：
1. Add pinLayer() description in layerDefs() part
- Q4 e8 B4 }+ Y. r/ i1 i2. merge it with normal metal layer by using geomOr().
8 K0 S9 F* K2 k" y
可參見以下sample:
# z6 m$ E6 _5 d8 {9 |) B===========================================================
  f4 C2 C- G$ QdrcExtractRules(
layerDefs( "df2"
+ c9 l  j5 }4 a( d6 R1 ^nwell = layer( "nwell" )
# ~$ o" p5 o0 ?( b# Xnimp = layer( "nimp" )
pimp = layer( "pimp" )
oxide = layer( "oxide" )
pres = layer( "pres" )
/ Z" c- V/ p3 e  ypoly = layer( "poly" )
contact = layer( "contact" )
* E9 p1 ^; n7 n2 O4 t. H5 E5 w0 Ymetal1 = layer( "metal1" )
; n. C5 v9 ^, F7 dvia = layer( "via" )
metal2 = layer( "metal2" )
polyPin = pinText( "poly" )
metal1Pin = pinText( "metal1" )
  \) W+ u/ \- E- `metal2Pin = pinText( "metal2" )
- M! d* n9 w4 V" X2 kmetal1BBpin = pinLayer( "metal1" ) ;reads in dfII black box
pins on metal1
+ A; |( ]9 [6 q6 hsubstrate = cellBoundary( "*" )
);end layerDefs section
2 _6 Z) g5 w4 R;Define p-substrate region
;-------------------------
psub = geomAndNot( substrate nwell )
;Define device recognition shapes and device terminals
;----------------------------------------------------
! U1 D/ O% Q# fndiff = geomAnd( oxide nimp )
9 I: Z& N2 L9 C: s5 Ypdiff = geomAnd( oxide pimp )
) A- z8 [* C: H# g3 J: @- |2 L2 wngate = geomAnd( ndiff poly )
nsd = geomAndNot( ndiff poly )
7 J' d1 n0 J, x* upgate = geomAnd( pdiff poly )
psd = geomAndNot( pdiff poly )
presBody = geomAndNot( pres via )
" @& K' j4 ~; mpresTerm = geomAnd( pres via )
;Merge black-box pins read in from pinLayer command with
conductive layer
;---------------------------------------------------------------
--------
: ^, w( q* Z% q5 i, |metal1 = geomOr( metal1 metal1BBpin )
;Define connectivity of layout
;-----------------------------
geomConnect( via( via metal2 metal1 presTerm )
via( contact metal1 poly nsd psd )
6 ?" z3 a  j, |2 ~% t; G4 _* Plabel( polyPin poly )
' n; a0 v% W* elabel( metal1Pin metal1 )
label( metal2Pin metal2 )
)
geomStamp( psub psd error )
+ [7 C: K1 y% b2 T  Z0 SgeomStamp( nwell nsd error )
6 g5 s& h7 ]' G2 W4 O1 A....................
===========================================================

. |' Y$ V2 }. P7 X& K* B$ j試看看囉..
Veteran