I've done the steps below to generate the antenna info on abstract generator, but it is fail so far..
1) define the thickness and defaultantenna rule for electricalRules section on techfile.
2) turn on the signal tab of Extract step
3) define "drain" and "gate" for antenna calculation
There is no error message during the generation, but it is still not able to find any antenna information at the exported LEF. I am not sure whether anything is missed. I wonder anyone could give me advise!
Actually I followed all the steps mentioned on the post for setup, but I have one thing that is not sure for defining the "drain" and 'gate" area for antenna calculation. The post mentioned that " The technology database or techfile should contain Poly and Diffusion layers" What is the actual meaning for this statement? By the way, I am running abstractor generation inside the DFII, is there any special thing need to do on the layer mapping?
Hi TSSorry for the late reply. I think the recent forum technical issues caused some delays in quite a number of posts.No special layer mapping is needed. Check the layerRules section of your Virtuoso techfile. It should contain lines similar to the following:layerRules( functions( ;( layer function [maskNumber]) ;( ----- -------- ------------) ( Poly "poly" 0 ) ( Oxide "ndiff" 1 ) ( Cont "cut" 2 ) ( Metal1 "metal" 3 )...
E.g. if your poly layer is named as "PC" and diffusion layer is named as "RX", then you need to define the following 2 lines in the antenna region box:PC and RX = gateRX andnot PC = drainIf "Extract signal nets" is not enabled, please add the following lines to the box for "Layer assignment for antenna extraction":PC PCRX RX andnot PCyourContName yourContNameIf the above still do not work, please go to "File->Export->Options" and upload your options file as an attachment. Thanks.
Thanks for the info. It is quite hard to read from your post because the sentences have all been joined up. Would you please upload your options file as an attachment?ThanksQuek