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Currently I'm doing the whole chip rtl to netlist LEC.There are some noneqivalent points happen on bi-directional IO Pad.
The following is the noneq report message:
Compared points are: Non-equivalent (G) + 586 PO /SDATA_0 (R) + 586 PO /SDATA_0Compared points are: Non-equivalent (G) + 1198 BBOX /PAD_SDATA_0 (R) + 1196 BBOX /PAD_SDATA_0Due to these Non-equivalent points:[INPUT] (G) + 11256 BUF /PAD_SDATA_0/IO (R) + 8037 BUF /PAD_SDATA_0/IO
And the following is the diagnosis message:
1. Diagnosis for Non-equivalent key points: (G) + 575 PO /SDATA_0 (R) + 575 PO /SDATA_0There are extra unmapped key points in this logic cone================================================================================ ID Type Name-------------------------------------------------------------------------------- (G) 49 'PI(Z)' /SDATA_0_z (R) 49 'PI(Z)' /SDATA_0_z================================================================================The diagnosis point can be corrected by changing the following gates:================================================================================Correction ID (R) Type Name--------------------------------------------------------------------------------DEL_INVERTER 8229 INV /SDATA_0FANIN_CHANGE 8230 MUX /SDATA_0change 49 PI /SDATA_0_zto 11406 INV /SDATA_0 (G)================================================================================
How to solve this kind of bi-di IO nonequivalent problem?Another question is that I don't know why not all of the bi-di IO are reported nonequivalent.Only several bi-di IO are reported.If the bi-di IO noneq is a general problem, then all of the bi-di IO should be reported noneq.