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You may recall a post I made a couple months ago about What's Good About Differential Pair Support in ASA?
In order to establish Differential Pair support for Design Entry HDL (DEHDL), the SPB16.01 release included enhancements to PCB Librarian which allow designers to define diff pair pins.
With the increased signal speeds of complex designs, differential pair signals are becoming more and more prevalent. In order to further reduce the design cycle times using DEHDL as the design capture tool, differential pairs must be taken into consideration. In most situations a differential pair signal connects to two pins of every component on the net.
Some key features for diff pair support in PCB Librarian:
There's a new right mouse button (RMB) menu option which allows you to select the constituent pins in the logical pin grid and then right-click on the selection and choose Create Differential Pair. Choose Global to create differential pairs in all packages or local to create a differential pair in the selected package. You can also remove differential pairs using the same RMB option.
Also, you can add differential pair properties to all parts in a library by executing the con2con command from the command prompt using the -autocreatediffpair option.
Part Developer uses the Default_Diffpair_Value definition in cds.cpm to name differential pairs. By default, the Default_Diffpair_Value definition is the following:
I'm curious how many designers/librarians are taking advantage of this capability in the SPB16.01 release?
As always, I look forward to your feedback!
Hi " Jerry"
Ok, thanks for your research
You can add the property "NO_DIFF_PAIR=TRUE" on the Differential Pair (DP) signals on the schematic canvas if you don't want them as library defined DPs in Constraint Manager.
Let me research this and I'll post my findings soon.
I use Differential Pair capability in PCB Librarian with SPB 16.03 release and I would like to know how can I delete differential pair library-defined in my project constraint manager.
Because I created my generic part in part-developer and I defined some pins with the diff-pair property but in my schematic I have single ended signal connected to this pins so
in my pcb constraint manager the single ended signal appears in a DPr(L), that I can't delete
Have you got a solution ?