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Virtuoso: Symbol with adjustable ports count

Runner

How can I create symbol with 2 pins, which can be netlisted as 2 separate ports (connected to two nets 'net0' and 'net1') for simulation (AMS or spectre) and as 1 port  (e.g. connected to one net 'net0_net1') for LVS (CDL netlist)?

Parents

  • It is about analog fault injection into the schematic. I used 2 different schematic for simulation and for LVS. E.g. in the 'sim' schematic voltage source is added for emulation of abnormal offset which is not present in the real design, at certain point one schematic gets changed, and second must also be updated. It would be more 'safe' and convenient if there was only one schematic for both tasks: simulation and layout.

    But I solved the problem using cds_thru and patch components from 'basic' lib.

Reply

  • It is about analog fault injection into the schematic. I used 2 different schematic for simulation and for LVS. E.g. in the 'sim' schematic voltage source is added for emulation of abnormal offset which is not present in the real design, at certain point one schematic gets changed, and second must also be updated. It would be more 'safe' and convenient if there was only one schematic for both tasks: simulation and layout.

    But I solved the problem using cds_thru and patch components from 'basic' lib.

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