when using report_timing in pt_shell or dc_shell
what is library recovery time?
in the report i got, the library recovery time is -300ns
why? what can cause it?
thanks
Recovery time specifies the minimum time that an asynchronous control input
pin must be held stable after being de-asserted and before the next clock
(active-edge) transition.
for the initial synthesis, set input delay on the reset port w.r.t clock and try buil up a reset tree in the APR tool and this should eliminate u r recovery violations.
the only thing which u have to do is set_input_delay 1.0 [get_ports reset]
and the rest of the things will be done in teh APR.