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D22's avatar
D22
Icon for New Contributor rankNew Contributor
7 years ago

How to set path skew through SDC?

Hi! I'm trying to develop a sort of TDC (Time-to-Digital Converter) using the carry-chain in a Cyclone device. In particular, I’m focusing on the fine measurement that, for my application, could hav...
KhaiChein_Y_Intel's avatar
KhaiChein_Y_Intel
Icon for Regular Contributor rankRegular Contributor
7 years ago

Hi D22,

If you want to set the delay from output_A[1] to input_B[1], you may use set_max_delay or set_min_delay.

If you want to set skew between path A[1]-B[1] and A[2]-B[2], etc, you may use set_max_skew.

The software will place and route based on the constraints. If you set some logic lock in the design, it will place and route within the region you have set. This might not be the optimal placement and routing.

Thanks.