Our design instantced a lot designware and we always compare these designware with their behavior model when run FV with LEC. This method always works, only except DW02_multp and some other designware. So, we'll blackbox these designware to pass the FV. But as DC do a lot of optimization to DW02_multp's input and output pins, while we must set constraints accordingly. These constraints lead to so many troubles to us as our design changes or re-synthesize. I was wondering if there is any way we also can compare DW02_multp without any blackboxes set. Thanks!