Please take care of your planning of pin connections:
- The block pins alignment will reduce the total wire-length and DRC also.
- The channel between sub-blocks should to be plan enough for both pin-to-pin connection and other power connection.
- Clock pins should be place in center of stdcell area. that will control your skew better.
- To get better slack, the in/out pins should be given of a buffer and prune the number of buffer also.
, Denmos: vinh.camau(at)gmail.com