km37.kim

PEX ALIAS makes different result between other layers

Discussion created by km37.kim on Feb 23, 2012
Latest reply on Feb 27, 2012 by samantha_lizak

hi, I have a question about 'pex alias' rule.

i'm using this rule like this

 

PEX ALIAS M0 M0a M0b M0c

CAPACITANCE ORDER M0 M1 M2

 

and i found that if PEX ALIAS rules is changed like below, the capacitance between M1 and M2 is affected and changed.

 

PEX ALIAS M0 M0a M0b

CAPACITANCE ORDER M0 M1 M2

(M0c is removed)

 

M1 and M2 is above M0 physically, so i think aliasing of M0 can't affect any capacitances between M1 layer and M2 layer..

anyone can answer what causes this problem? or does it make sense?

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