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Other CAD Tools >> Physical Verification, Extraction and Analysis >> Assura Rule deck developing.
https://designers-guide.org/forum/YaBB.pl?num=1177485050

Message started by skas20 on Apr 25^th, 2007, 12:10am

Title: Assura Rule deck developing.
Post by skas20 on Apr 25^th, 2007, 12:10am

Hi,

I am trying to write a Assura rule deck to plot a particular net in the Layout and output it to another layout view.
Basically, I want to see all the layers connected to a supply or ground rail in a layout, means a powerplot of vdd or gnd.

Please help me of someone already tried to solve this kind of a problem.

Thanks,
Sk.

Title: Re: Assura Rule deck developing.
Post by bernd on Apr 25^th, 2007, 3:24am

In principal this can look like follows in a 'extract.rul' like file.
You then have to set the LVS 'avParameters'
?var ( Net_Name = "myNet" )
and for extraction use the 'rcxParameters'
?lvsExtractedCellView t
This will create a extracted view with the desired net only.

Bernd

Code:

drcExtractRules(
;; DFII database input layer
layerDefs( "df2"
m1 = layer( "METAL1" type( "drawing" ) )
via12 = layer( "VIA12" type( "drawing" ) )
m2 = layer( "METAL2" type( "drawing" ) )
via23 = layer( "VIA23" type( "drawing" ) )
m3 = layer( "METAL3" type( "drawing" ) )
via34 = layer( "VIA34" type( "drawing" ) )
m4 = layer( "METAL4" type( "drawing" ) )

rmdmy1 = layer( "RMDMY" type( "drawing1" ) )
)

;; one dummy devices is needed
rm1 = geomAnd( geomAnd( m1 rmdmy1 ) )

geomConnect(
via( via12 m2 m1 )
via( via23 m3 m2 )
via( via34 m4 m3 )

label( m1_text m1 )
label( m2_text m2 )
label( m3_text m3 )
) ;; close geomConnect

;; Selected net derivation section
m1net = geomGetNet( m1 avGetVariable( "VDD" Net_Name "Net Name" ) )
via12net = geomGetNet( via12 avGetVariable( "VDD" Net_Name "Net Name" ) )
m2net = geomGetNet( m2 avGetVariable( "VDD" Net_Name "Net Name" ) )
via23net = geomGetNet( via23 avGetVariable( "VDD" Net_Name "Net Name" ) )
m3net = geomGetNet( m3 avGetVariable( "VDD" Net_Name "Net Name" ) )
via34net = geomGetNet( via34 avGetVariable( "VDD" Net_Name "Net Name" ) )
m4net = geomGetNet( m4 avGetVariable( "VDD" Net_Name "Net Name" ) )

;; metal resitor extraction
extractRES(
"rm1"
rm1
m1( "PLUS" "MINUS" )
spiceModel( "rm1s" )
cellView( "rm1 ivpcell myLib" )
flagMalformed
)

;; copy shapes into the extracted cellview
saveInterconnect(
( m1net "METAL1" )
( via12net "VIA12" )
( m2net "METAL2" )
( via23net "VIA23" )
( m3net "METAL3" )
( via34net "VIA34" )
( m4net "METAL4" )
)

) ;; end drcExtractRules

Title: Re: Assura Rule deck developing.
Post by skas20 on Apr 26^th, 2007, 1:07am

Bernd,

Thanks a lot for this detailed description on what could be done.
Please give me 2 more days to experiment this and get back to you.

Thanks and regards,
SK.

Title: Re: Assura Rule deck developing.
Post by skas20 on May 2^nd, 2007, 1:40am

Bernd,

Thanks. This stuff works.
I tried it by using your extract rule section and did outLayer command in the rsf file to output the layer.

It started ploting the Metal and via layers. But I am yet to try how to propagate the signal through NWELL, diffusion etc...

Regards,
Sk.