论文部分内容阅读
某些 I~2C 总线机心彩电中设有一项崭新的总线控制故障自检功能。CPU 借助 I~2C 总线既可以向各被控集成电路发送数据、指令,同时接收各被控集成电路反馈的数据信息。CPU 利用 I~2C 总线可以检测各被控集成电路工作是否正常。具体过程如下:每次接收电源瞬间,CPU 依次序向各被控集成电路发送数据,各被控集成电路收到该数据后立即向 CPU 反馈应答信号。若电路有故障,被控集成电路不能向 CPU 反馈应答信号,此时 CPU 就判断该集成电路有故障,然后立即动作,使机器面板上的电
Some I ~ 2C bus telematics has a new bus control fault self-test function. The CPU can transmit data and instructions to each controlled integrated circuit by means of I ~ 2C bus and simultaneously receive data information fed back by each controlled integrated circuit. CPU use I ~ 2C bus can detect the work of the controlled IC is normal. The specific process is as follows: Each time the power is received, the CPU sends data to each controlled integrated circuit in sequence, and each controlled integrated circuit sends a response signal back to the CPU immediately after receiving the data. If the circuit is faulty, accused IC can not feedback signal to the CPU, this time the CPU to determine the integrated circuit is faulty, and then immediately action, so that the machine panel power