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SK_VA's avatar
SK_VA
Icon for Occasional Contributor rankOccasional Contributor
6 years ago

IO_OBUF Placement and IC delay in timing path

Is there anyways we can constrain the placement of IO_OBUF so that it is closer to the pad. How can we reduce the IC delay in the timing path?
KennyT_altera's avatar
KennyT_altera
Icon for Super Contributor rankSuper Contributor
6 years ago

You misunderstood how to use the fast input and fast output register. Those have to be points towards the register, base on your screenshot, you have to apply to address_latch. However, even if you apply to it, it will not work because you have a nand_dq_out in btw the IO. I suggest you manually add another register after the nand_dq_out and apply the fast output register.