Jan,

I could not open your file with v.8.08 but I could open it with 8.09 so I
assumed that was the version you were using.

Despite this, I realize that the modification I made is no different that
simply selecting one of the VDD nodes (of the three, perhaps the most center
make the most sense) and exporting it again (also named VDD) for the next
level.

This sounds like what you're after.

Lincoln

-----Original Message-----
From: [email protected] [mailto:[email protected]]
On Behalf Of [email protected]
Sent: Thursday, October 08, 2009 1:19 PM
To: [email protected]
Subject: RE: getting a global plane into a hierarchical cell

For some reason I can't open that attachment.
Did you get mine?  



Jan Bissey 
Micron Technology 
208.368.3066 
WWSD
        __o 
       _ \<_  
......(_)/(_) 


-----Original Message-----
From: [email protected] [mailto:[email protected]]
On Behalf Of Lincoln Bollschweiler
Sent: Thursday, October 08, 2009 1:12 PM
To: [email protected]
Subject: RE: getting a global plane into a hierarchical cell

Hi Jan,

I added a pure layer of Metal 1 over the top of your VDD. I connected that
pure layer to one of your VDDs (might want to connect to all of them??). I
exported that pure layer. I then made a new cell called NextLevel and
connected M1 to it.

Take a look. Is that what you were after?

Regards,
Lincoln

-----Original Message-----
From: [email protected] [mailto:[email protected]]
On Behalf Of Jan
Sent: Thursday, October 08, 2009 12:58 PM
To: Electric VLSI Editor
Subject: getting a global plane into a hierarchical cell


I have an inverter cell created in layout.  Node names are vdd, gnd, in,
out.  I want to now create a string of inverters so I create a new cell,
called test_lay, and place some of the inverters in there and connect them
up.  How do I get the vdd and gnd nodes to be one solid node in this second
layout?  I have attached a jelib for you to take a look.  For example I
can't get the entire bottom node to be gnd.
Why do I want this?  Because the next level up in the hierarchy, test2_lay,
I want to have this string of inverters to be connected on the left and
right to the adjacent cells vdd and gnd busses.
The way I see around this is to create another bus in each hierarchy that
becomes the common bus, gnd or vdd, for that level.  Seems redundant and
unnecessary.
I ahve posted a jelib called test.jelib
Ideas?








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