brunope
Newbie level 5
Hi guys,
When running the RC extraction with Encounter at the end of the PnR flow, I get the following messages:
**ERROR: (ENCEXT-3423): Detected 2 nets with incomplete RC network. Low-value resistances have been added by the software to complete the RC network of these nets. Review the list of affected nets in the 'ctrl_top.rc_typ.incomplete_res.net' file to ensure they are not along the critical path because results of timing analysis performed on nets with incomplete RC network can be inaccurate.
This happens only on 2 nets, that have nothing special from a design point of view.
Looking at the man of (ENCEXT-3423), this appears because the resistance for the given nets is not found in the SPEF.
But I am kind of stuck in tracing back the root cause of this problem.
Would you have hint about where to look?
Thanks!
When running the RC extraction with Encounter at the end of the PnR flow, I get the following messages:
**ERROR: (ENCEXT-3423): Detected 2 nets with incomplete RC network. Low-value resistances have been added by the software to complete the RC network of these nets. Review the list of affected nets in the 'ctrl_top.rc_typ.incomplete_res.net' file to ensure they are not along the critical path because results of timing analysis performed on nets with incomplete RC network can be inaccurate.
This happens only on 2 nets, that have nothing special from a design point of view.
Looking at the man of (ENCEXT-3423), this appears because the resistance for the given nets is not found in the SPEF.
But I am kind of stuck in tracing back the root cause of this problem.
Would you have hint about where to look?
Thanks!