LVS problem in CALIBRE

[SPSOTON]

HI, guys,

i am using IBM 0.13 tech, after the LVS checking in CALIBRE, the "smile face" didn't pop out, but no error shown in comparison results.

i checked the LVS report, it shows the cell comparison results (top level) all correct, but overall comparison results has one error : Components with non-identical signal pins.

does anyone can help me with that problem? is that mean i pass the LVS?

Thanks in advance

 

[erikl]

Not sure. Check the component's matching. May be the LVS mixed up connections between (rather) similar pins.

 

[Dominik Przyborowski]

How do You run LVS?
In IBM0.13 You need to follow this instruction:

1. In schematic window:
1. Create netlist of schematic. From main menu → IBM_PDK → Netlist → CDL.
In new create CDL window (at 1st run) fill a "Library name" and "Top cell" name fields with appropriate names. Change "run" directory if necessary (Calibre LVS generate large number of files)
3. Prepare LVS netlist. From main menu → IBM_PDK → Netlist → CDL Processor for LVS.
In "CDL processor for LVS" window change "Run directory" to directory with netlist file. Mark the netlist file and move (i.e. using double-click) to "files to process" tab.

2. In layout window:
1. Run Calibre LVS: main menu → IBM_PDK → Checking → Calibre → LVS.
2. "No trace property" and "PEX run" options set on FALSE
3. In "Input" section, netlist tab: unselect "export from schematic viewer" checkbox and point out the "cell_name.netlist.lvs" file in the Files path.
4. Run LVS.

 

[SPSOTON]

Thanks, Dominik, the problem is solved, it turns out that i didn't set "PEX run" at FALSE when doing LVS.