※ 引述《yellowfishie (喵喵喵喵~~~)》之铭言： : → gwliao:请用.13的lib, 然後用Nanoroute的时後, 将DFM打勾. 02/14 01:17 : → gwliao:你就可以看到redundant via的芳踪. :) 02/14 01:18 : 所以将 routing result 喂给 encounter, : 就可以作 rvia insertion? : 还是 encounter 把 rvia insertion 和 router 绑死了，一定要边绕边作呢? 自己回，从 doc 看来是可以的: Optimizing Vias (Via Swapping) When the design is free of DRC violations, NanoRoute can optimize vias by replacing single-cut vias with multiple-cut vias or with fat vias (single or double-cut vias with an extended metal overhang). NanoRoute does not replace double-cut or quad-cut vias during via optimization. Ensure the following before replacing the vias: Double-cut vias and fat vias are auto-generated or defined in the LEF file. The design is completely global and detailed routed. If you delete any wires after routing, reroute the design before replacing the vias. The design is free of all DRC violations. NanoRoute optimizes vias by replacing normal single-cut vias with the following types of vias: Fat double-cut vias Normal double-cut vias Fat single-cut vias To replace the vias, select DFM on the NanoRoute form or issue the following commands: setNanoRouteMode -drouteOptimizeUseMultiCutVia truedetailRoute To ensure that NanoRoute chooses vias with the largest overhang first, specify the following parameter: setNanoRouteMode -drouteUseBiggerOverhangViaFirst true To replace single-cut vias with quad-cut vias, specify the following parameter: setNanoRouteMode -drouteUseViaOfCut 4 --

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