Synchronous Copy Generation
Synchronous Copy is generated when an object or a set of objects that exist in the layout is copied and the synchronization between the copy source and the copy target is maintained. The copy source and the copy target are each generated as a group in the layout view. Each group is called a synchronous copy and a set of such groups is called a synchronized family. Any changes made to the copy source are automatically reflected in the copy target and vice versa. For example, if you edit the routing in the copy source or the copy target, the change is replicated in the other group.
- Labels are not synchronized because these are clone non-checked objects.
- Synchronous Copy command is not supported in Transparent Group mode because in this mode, the figs inside the basic figGroups are selected, not the figGroup itself.
You use the Create Synchronous Copy check box available in the Create Cluster Boundary form or Save Short Locator form to create synchronous copies.
The synchronous copy generated by using the Create Cluster Boundary form or Save Short Locator form cannot be differentiated from the synchronous clones generated using the Generate Clones form. These clones differ only in the way they are generated.
Unlike the mechanism used when generating clones by using the Generate Clones form, Create Synchronous Copy provides a synchronous grouping feature that does not involve searching the schematic for an appropriate match. Therefore, you can create a synchronous group of objects that exist only in the layout. For example, you can synchronously copy some routing objects, which are objects that exist only in the layout, to create a synchronous routing group. You can also use a single device, a set of devices, or a chained set of devices that exist in the layout, as the copy source. The copy source can contain the entire chain or a part of it.
Copying from One Cellview to Another
If the target cellview is different from the source cellview, synchronous copy cannot be created.
If you run the Copy or Repeat Copy command with Create Synchronous Copy selected to create a copy target in a cellview other than the cellview in which the source is selected, synchronous copies are not created. However, a regular copy of the source is created in the source cellview and the following warning message is generated:
“Cannot create synchronous clones because the source and the target clones are not in the same cellview. The clone is created as a free object instead.”
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