priyutiru
Newbie level 5
My design has four clock domains( functional freq coming from PLL 250MHZ, 150MHZ etc), but during the shift mode, all the scan chains use low frequency 20MHZ. In this case, do I need lockup latches since the shift freq is same for all the flops in all domains? Only in the functional mode (at speed capture) uses high freq clocks.