Module libreda_pnr::route::pin_access_oracle

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Expand description

A pin access oracle (PAO) predicts good locations for connecting to pins of standard-cells before the routing is done. This can help guiding the global and especially the detail routing.

Usually the pin access is pre-computed for all the pins. The PinAccessOracle trait then only queries the precomputed results.

Not only locations for pin access might be precomputed but also the access directions or the vias which can be used for connecting to the pin without creating design rule violations.

Traits

  • PinAccessOracle
    Query interface for precomputed pin access locations. This is intended to guide the router.