Writing out a def file with different units

Hi All,

I would like to know if I can write out a def file with different
units than what is specified in my lef file.

My default units are all in 100
e.g UNITS DISTANCE MICRONS 100

I would like to import my design into silicon ensemble and then write
it out back as a def with the units changed to 1000.

Is there a way ?? Any help on this topic will be highly appreciated.

Thanks
Saurabh

 

[Ronald]

Saurabh,

First of all, I do not think you could do it inside Silicon Ensemble.
The routing data or placement is different from DBU 100 and 1000.

Manually, for every coordinate number, you add one "0" in the DEF
file.... You could write a script for this but you must be careful of
unnecessary modification.

The other way is to use "intermediate tools". Theoritically you could
DEF-in the design data to Opus library with gec3DBUPerUU 100. Change
gec3DBUPerUU to 1000 and DEF-out this layout into DEF file. Please
try it.

thanks,
ronald

Hi All,

I would like to know if I can write out a def file with different
units than what is specified in my lef file.

My default units are all in 100
e.g UNITS DISTANCE MICRONS 100

I would like to import my design into silicon ensemble and then write
it out back as a def with the units changed to 1000.

Is there a way ?? Any help on this topic will be highly appreciated.

Thanks
Saurabh