A serial communication interface multiplexing circuit and a use method
The invention discloses a serial communication interface multiplexing circuit and a use method thereof, and the serial communication interface multiplexing circuit comprises a microcontroller unit (MCU), a channel switching circuit, a communication interface level conversion circuit A, a function un...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention discloses a serial communication interface multiplexing circuit and a use method thereof, and the serial communication interface multiplexing circuit comprises a microcontroller unit (MCU), a channel switching circuit, a communication interface level conversion circuit A, a function unit A, a communication interface level conversion circuit B and a function unit B, and is used for realizing multiplexing of a serial communication interface. A microcontroller (MCU) is used for controlling the high level and the low level of a general purpose input/output (GPIO) of the MCU so as torealize the switching of a channel switching circuit, and the circuit is similar to two SPDTs, so that the multiplexing of a serial communication interface is realized; The communication interface level conversion circuit can be an RS232 interface circuit, an RS485 interface circuit and an RS422 interface circuit.
本发明公开一种串行通信接口复用电路及使用方法，所述串行通信接口复用电路包括微控制器MCU、通道切换电路、通信接口电平转换电路A、功能单元A、通信接口电平转换电路B、功能单元B，用于实现串行通信接口的复用。通过微控制器( |
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