set_clock_group question..plz help me

Clock groups provide a advantageous way to specify the clock are not related.Asynchronous clocks are completely unrelated that is two clock generated from the different source. Exclusive clock means not used at the same-time in the design , but not clock can exists but not used i would say in your case is mux output.

In your case clock group and asynchronous only applicable to the clka and clkb, but exclusive can apply to the clock mux output.

set_clock_groups --asynchronous -group {clka divclka clkd} -group {clkb} (I believe clkc and clka both same)

set_clock_groups -logically_exclusive -group {clka} -group {divclka} : Note I dont know full design , constraint applicable specific path given in the diagram.

Also set the false path since clka and clkb are not related

set_false_path -from [get_clocks clka] -to [get_clocks clkb]

set_false_path -from [get_clocks clkb] -to [get_clocks clka]

Thank you ,

Regards,

Sree