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IO power pad and Core power pad with different voltage?

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bailibl

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In Astro,how to deal with IO power pad and Core power pad with different voltage?
When expanding netlist,in Netlist In--->Exp--->Global Options,how to fill in the form?
 

Garbielhijo

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The power for the core and pads are made by the diferents rings in the power pads. You must use pads with the corrensponding rings (i.e. IO65_33 or IO65_18, it depends of your librarys, Vdd18, Vdd33).

When you are conecting the power straps and rails dont forget to asign it to the correct net (core vdd).
 

    bailibl

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bailibl

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I have tried what you said,but it doesn't work.
My IO and Core power pad in the reference library is:
IO power pad cell:PLVDDH
IO ground pad cell: PLVSSH
Core power pad cell: PLVDDC
Core ground pad cell: PLVSSC
and I want to:
connect Core power pad to global net VDD
connect Core ground pad to global net GND
connect IO power pad to global net VDDH
connect IO ground pad to global net VSSH

When "Create Rectangle Ring",in the "Net Name"form,I typed in "VDD,GND,VDDH,VSSH",but errors came up like below:

net "VDDH" and "VSSH" doesn't exist!

Should I add globla net VDDH VSSH when "Expand Netlist" in "global options"??

BTW:
I have tried to add globla net VDDH VSSH when "Expand Netlist" but failed.
 

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