本人用Vivado2014.2例化了一个Ethernet 1000base-x pcs/pma的IP， 运行的时候一直报这个错误： [Opt 31-67] Problem: A LUT2cell in the design is missing a connection on input pin I0, which is used bythe LUT equation. This pin has either been left unconnected in the design orthe connection was removed due to the trimming of unused logic. The LUT cellname is:PL_TOP_PORT1/gmii2sfp/inst/gmii2sfp_core/gpcs_pma_inst/HAS_MANAGEMENT.MDIO/CONFIG_REG_NO_AN.CONFIGURATION_VALID_EN_i_1.
希望高手能指点一下，谢啦
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版主 再请教你一个问题，我现在程序里面有很多的IO都被优化掉了一直报错
我看有人说加(*KEEP = "TRUE"*) 但是还是不好使
谢啦
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