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6455 I2C配置为从发送模式最后一个字节发送不出去?



6455DSP与FPGA通过I2C相连,DSP的I2C配置为从发送模式,每次传输时最后一个字节发送不出去,查看I2C发送缓存寄存器,发现最后一个字节的数据在该寄存器中,没有发送出去。例如:DSP发送32个字节的数据,FPGA只能收到前31个字节。请问这是什么原因?