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你好 ,
在实施阶段,我遇到了这个问题: [选项31-67]问题:设计中的LUT3单元缺少输入引脚I1上的连接,LUT方程使用该连接。 该引脚在设计中未被连接,或者由于未使用的逻辑的修整而移除了连接。 LUT单元名称为:LD180_130918_i / axi_apb_bridge_0 / U0 / AXILITE_SLAVE_IF_MODULE / FSM_sequential_axi_wr_rd_cs [1] _i_2。 任何想法如何解决这个问题? 以上来自于谷歌翻译 以下为原文 Hello , While the implementation phase I've got this problem : [Opt 31-67] Problem: A LUT3 cell in the design is missing a connection on input pin I1, which is used by the LUT equation. This pin has either been left unconnected in the design or the connection was removed due to the trimming of unused logic. The LUT cell name is: LD180_130918_i/axi_apb_bridge_0/U0/AXILITE_SLAVE_IF_MODULE/FSM_sequential_axi_wr_rd_cs[1]_i_2. Any Idea how to fix this issue ?? |
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HI @奥特曼,
为了调试这个,我建议你在运行优化之前打开合成设计并找出导致错误的LUT。 通常,当LUT引脚未连接时会发生此错误。 如果需要,可以在驱动错误中提到的LUT的单元格上使用dont_touch属性。 以上来自于谷歌翻译 以下为原文 HI @ottmann, For debugging this, I would suggest you open the synthesized design before running optimization and find out the LUT causing the error. Generally, this error would occur when the LUT pins are unconnected. If you want you can use the dont_touch attribute on the cell driving the LUT mentioned in the error. |
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@ottmann
这已在Vivado实施用户指南(UG904)的“常见设计错误”主题下记录: https://www.xilinx.com/support/documentation/sw_manuals/xilinx2018_2/ug904-vivado-implementation.pdf#page=51 正如@ shameeraYou正确建议的那样,您可以打开精心设计或合成设计并检查LUT单元的连接。 打开合成设计后使用以下TCL命令: show_objects -name test [get_cellsLD180_130918_i / axi_apb_bridge_0 / U0 / AXILITE_SLAVE_IF_MODULE / FSM_sequential_axi_wr_rd_cs [1] _i_2] 如果您有一个有效的连接并且该工具正在修剪它,您也可以应用DONT_TOUCH属性。 https://www.xilinx.com/support/documentation/sw_manuals/xilinx2018_2/ug912-vivado-properties.pdf#page=191 FYI:HTTPS://www.xilinx.com/support/answers/70111.html --Syed -------------------------------------------------- -------------------------------------------请注意 - 请标记答案 如果提供的信息有用,请“接受为解决方案”。给予您认为有用并回复导向的帖子。感谢Kudos .------------------------ -------------------------------------------------- ------------------- 以上来自于谷歌翻译 以下为原文 @ottmann This has been documented in Vivado implementation user guide (UG904) under "common design error" topic: https://www.xilinx.com/support/documentation/sw_manuals/xilinx2018_2/ug904-vivado-implementation.pdf#page=51 As correctly suggested by @shameera You can open elaborated or synthesized design and check the connection of the LUT cell. Use the following TCL command after opening synthesized design: show_objects -name test [get_cells LD180_130918_i/axi_apb_bridge_0/U0/AXILITE_SLAVE_IF_MODULE/FSM_sequential_axi_wr_rd_cs[1]_i_2] You can also apply DONT_TOUCH attribute if you have a valid connection and the tool is trimming it. https://www.xilinx.com/support/documentation/sw_manuals/xilinx2018_2/ug912-vivado-properties.pdf#page=191 FYI: https://www.xilinx.com/support/answers/70111.html --Syed --------------------------------------------------------------------------------------------- Kindly note- Please mark the Answer as "Accept as solution" if information provided is helpful. Give Kudos to a post which you think is helpful and reply oriented. --------------------------------------------------------------------------------------------- |
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