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TMS320C6748: I2C

Part Number: TMS320C6748


请问一下,I2C在作为主机接收从机的数据是时候,主机发送从机的地址,然后收到从机ACK响应接着开始接收数据。请问第一步发送从机地址考什么机制判断发送完成了,6748里面关于I2C中断的之后收不到从机ACK的中断。