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？

: k( V1 B8 O9 N* s  e0 W+ TLVS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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% R0 c% r1 _6 I4 Q3 Y# T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。
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" L( G# y" z5 |! r  E; D4 P但改extract rule的過程，大約分成二步：
1. Add pinLayer() description in layerDefs() part
8 B' G8 N' O8 p2. merge it with normal metal layer by using geomOr().

% L% Z- b. d+ ~6 s& I/ d可參見以下sample:
===========================================================
drcExtractRules(
& o# g' H" E0 N0 M: b7 hlayerDefs( "df2"
nwell = layer( "nwell" )
! x6 e- ]8 R% ]2 N9 dnimp = layer( "nimp" )
pimp = layer( "pimp" )
oxide = layer( "oxide" )
pres = layer( "pres" )
7 H6 N+ R' h: V& u' ^poly = layer( "poly" )
contact = layer( "contact" )
2 ~$ P* g( Z& H( Z* Imetal1 = layer( "metal1" )
" ?8 u0 J# K; `+ S; wvia = layer( "via" )
$ F. }2 d  a8 K) xmetal2 = layer( "metal2" )
' W" u5 J% c7 j9 ]/ n. \  Z8 O4 r$ zpolyPin = pinText( "poly" )
metal1Pin = pinText( "metal1" )
metal2Pin = pinText( "metal2" )
metal1BBpin = pinLayer( "metal1" ) ;reads in dfII black box
pins on metal1
$ d% W) a8 s1 J7 M- r9 J' ?/ _substrate = cellBoundary( "*" )
);end layerDefs section
' _. Y2 L+ V& z# |;Define p-substrate region
;-------------------------
, E- d, f- U0 o6 a$ w2 }4 {  \psub = geomAndNot( substrate nwell )
; n1 m+ e# w, ]$ _$ v0 l- k;Define device recognition shapes and device terminals
) B0 g9 l2 {4 l; n" A7 t# b;----------------------------------------------------
! c2 d; E9 S2 y" Gndiff = geomAnd( oxide nimp )
* m6 Y( C  E+ D2 @pdiff = geomAnd( oxide pimp )
ngate = geomAnd( ndiff poly )
nsd = geomAndNot( ndiff poly )
pgate = geomAnd( pdiff poly )
. Z3 F. q  K! |& C0 qpsd = geomAndNot( pdiff poly )
presBody = geomAndNot( pres via )
9 V4 A4 i- t. _/ r1 U+ i: EpresTerm = geomAnd( pres via )
;Merge black-box pins read in from pinLayer command with
conductive layer
2 j* N$ ^8 X, t/ H+ y/ E- d;---------------------------------------------------------------
# a/ o4 c9 N. d  S--------
metal1 = geomOr( metal1 metal1BBpin )
;Define connectivity of layout
2 U  j7 E* w/ u- R: Y;-----------------------------
1 g8 k& z+ i/ y  Q: N+ @+ D. `) Z$ WgeomConnect( via( via metal2 metal1 presTerm )
via( contact metal1 poly nsd psd )
label( polyPin poly )
- \5 Q* [% ^. E. K6 q; [, Rlabel( metal1Pin metal1 )
label( metal2Pin metal2 )
  ^/ ~" [' R+ w: v)
geomStamp( psub psd error )
' J2 @: ~- U/ R8 _' r' h' u: CgeomStamp( nwell nsd error )
8 C# `9 u- Z- _....................
7 A: v. H% `, T$ |3 B9 R===========================================================
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! T! F7 Q9 u! x0 {試看看囉..
Veteran