怎样消除 61061045 WARNING – The SN pin is not available for use as a general purpose I/O pin when the SLAVE_SPI_PORT attribute is enabled.-Lattice-莱迪斯社区-FPGA CPLD-ChipDebug

怎样消除 61061045 WARNING – The SN pin is not available for use as a general purpose I/O pin when the SLAVE_SPI_PORT attribute is enabled.

我发现我的XO3工程中有个警告,不知道如何消除,好像是不能分配引脚,望哪位大神能指导下。谢谢!

61061045 WARNING – The SN pin is not available for use as a general purpose I/O pin when the SLAVESPIPORT attribute is enabled. The SN pin should be tied high with an external pull-up if you are not using the Slave SPI port for configuration.

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