rickgchen
Newbie level 6
Hi everyone, I have a problem when doing Assura LVS checking. The PDK im using is IBM10LPE RF kit (05-01-00-01-LD). The problem is:
when doing Assura LVS cheking, there are two modes: CDL and VLDB.
(1) If I have device with multiplicity > 1, I have to generate CDL netlist and use LVS CDL mode. If I use VLDB mode, there will be error indicating multiplicity problems.
(2) If I have "ncap" device (it is a MOS varactor) in the schematic, when I use LVS CDL mode, the ncap device can not be matched. However, when I use VLDB mode, the ncap can be recognized.
In summary, if I have device with multiplicity > 1 without ncap, then LVS CDL mode works pretty well. When I have ncap device (maybe there are some other device too) without any multiplicity, LVS VLDB mode works well.
However, I have "ncap" and device with multiplicity > 1 in the same schematic, so how can I get LVS clean?
Thank you in advance.
when doing Assura LVS cheking, there are two modes: CDL and VLDB.
(1) If I have device with multiplicity > 1, I have to generate CDL netlist and use LVS CDL mode. If I use VLDB mode, there will be error indicating multiplicity problems.
(2) If I have "ncap" device (it is a MOS varactor) in the schematic, when I use LVS CDL mode, the ncap device can not be matched. However, when I use VLDB mode, the ncap can be recognized.
In summary, if I have device with multiplicity > 1 without ncap, then LVS CDL mode works pretty well. When I have ncap device (maybe there are some other device too) without any multiplicity, LVS VLDB mode works well.
However, I have "ncap" and device with multiplicity > 1 in the same schematic, so how can I get LVS clean?
Thank you in advance.