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波形如图所示,紫色波形为时钟信号,黄色波形为从机发给主机信号,绿色波形为主机发给从机信号,在时钟空闲状态,从机发给主机的波形出现被拉低0.8V左右
您好,
SPISIMO拉低时片选信号是什么状态?
请参考TRM “24.3.3 Slave Mode”内容,确认SPISIMO是否进入了高阻态。
TMS320F28003x Real-Time Microcontrollers Technical Reference Manual (Rev. C)