Place 30-578：未关联的IO延迟实例错误
实现 Place / Route / Opt / Timing 社区未闭环 Vivado 2015.4 / xc7z035
一句话结论：用IODELAY_GROUP将各IP的IODELAY与IDELAYCTRL分组可解决
同时例化gmii_to_rgmii与MIG后实现阶段报错，单独例化均能生成比特流
[Place 30-578] Found un-associated IO delay instances in the design. The list of IO delay instances without an associated IdelayCtrl is as follows:
帖中未明确；回答推测两个IP各自例化IDELAYCTRL，需用IODELAY_GROUP分组
用IODELAY_GROUP将各IP的IODELAY与IDELAYCTRL分组可解决
本文据 AMD 客户社区（原 Xilinx 论坛）真实报错帖整理为中文要点，非原文转载；技术细节以原帖与 AMD 官方文档为准。
原帖：https://adaptivesupport.amd.com/s/question/0D52E00006hpi8KSAQ/place-30578-error-unassociated…