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How to measure current probed by isub() command

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vasaroopak

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Hello All,
I am trying to find leakage of different instances/subckts using spectre xps.
I tried using
chk1 dyn_subcktpwr inst=
[*] port=
[*] depth=4 time_window=[36n 37n]

It dumped an empty xml file.


Then moved ahead with spice commands as under:


For
.probe i(vvdd)
.probe i(vvcs).

I am measuring them as under:
.measure tran leak_vdd_1 avg i(vvdd) from = start_time to = end_time
.measure tran leak_vcs_1 avg i(vvcs) from = start_time to = end_time



But how to measure current for below probe which used isub
.probe isub(SEGIOX2.VDD)
.probe isub(SEGIOX2.SEGIO0.VDD)
.probe isub(SEGIOX2.REBUF.VDD)



I tried following ways which did not work.
1) .print isub(SEGIOX2.VDD)
2) .measure tran leak_vdd_2 avg i(SEGIOX2.VDD) from = start_time to = end_time


So any help on how to dump current probed by isub ?


Thanks,
Roopak
 

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