Antennagate area problem(.lef problem)

[doreen105]

lefdefref

When I do back end design with SOC encounter,it reports the error of IO lef file.

said: Antenna gate area must be a positive value at or near 0.

I found in the lef file,the Antenna gate area of some pin are just set to 0.

What does "Antenna gate area" used for??

Can I just delete all 0 Antenna gate areas ,since 0 means nothing????

Thanks in advance

 

[entropy]

Please ref to lefdefref.pdf. It can be found in many c@dence tools.