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 再问个问题,我最近想用k7325T做个以太网的光phy,里面有个Ethernet 1000base-x pcs/pma的IP核,然后我按照它生成的design example添加了一些文件,这些都是他自己生成的,但是报了很多错误 大概的意思是在综合的时候一些IO被优化掉了然后就报类似这样的错误[Place 30-69] InstancePL_TOP_PORT1/IOBUF_SFP/OBUFT (OBUFT) is unplaced after IO placer。
我看有的说加(*KEEP = "TRUE"*)的,不过也没有解决?
弱弱的问一下(*KEEP = "TRUE"*)是加在被优化掉的.v文件里还是新建一个xdc文件呢
谢谢啦
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