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Jerry Yau

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Hi sir,
I have a resistor which 2 terminals are shorted together shown in follow picture :

                 resistor
  |----------------------------^^^^^^^^^--------------------|
---|---------------------------------------------------- -----|
 terminal 1  A wire to short resistor         terminal 2

Ans I implement it in layout as following:

 
   metal1   nwell   metal1    nwell   metal1
  l------------=========--------------==========----------l
  l wire1  resistor 1  wire2   resistor 2 wire3  l
---l-------------------------------------------------------l
 terminal 1         metal1         terminal 2

My calibre lvs rule file has following settting :
LVS FILTER UNUSED OPTION B C D E F G H I J K O RC LAYOUT
LVS FILTER UNUSED OPTION F G H I J K O SOURCE
LVS REDUCE SERIES RESISTORS YES
LVS REDUCE PARALLEL RESISTORS YES

So I want calibre can combine two nwell resistors to one resistor which 2 terminals are shorted by metal1 in order to match the schematic.
After runing lvs process, calibre said this 2 resistors are parallel not series and then report there is a missing net named wire2 in schematic.

How can I resolve this problem if we can't modify layout?

Thanks.
 

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