Multi-node communication circuit

Abstract

The invention provides a multi-node communication circuit. When the control chip of the communication circuit determines that the host communication circuit sends the first data, the sending end of each slave communication circuit is controlled to be high so that the host communication circuit sends the first data to each slave communication circuit through the common port, and after the host sends the first data, the sending end of the host communication circuit is controlled to be high; for each slave computer communication circuit, when it is determined that the slave computer sends second data, the sending end of the host computer communication circuit is controlled to be high so that the slave computer communication circuit sends the second data to the host computer communication circuit through the common port, and after the slave computer sends the second data, the control chip controls the sending end of the slave computer communication circuit to be high, and thus the complexity of the design of the multi-node communication circuit can be reduced by applying the technical scheme.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular, to a multi-node communication circuit. Background technique [0002] Asynchronous communication circuit (URAT communication) is a widely used serial data transmission protocol. UART communication circuit realizes the characteristics of less transmission lines, high reliability and long transmission distance. [0003] At present, the communication circuit of UART communication usually adopts one-to-one communication. Generally, a switch circuit is set on the connection link between the host and the slave to ensure that both the host and the slave can complete the data transfer when they are sending data. Interaction. At the same time, in order to ensure that the data can be accurately transmitted to the master or slave, a timing sequence for the chip to process communication is usually added, which increases the complexity of the communication circuit. Contents...

AI Technical Summary

Problems solved by technology

[0003] At present, the communication circuit of UART communication usually adopts one-to-one communication. Generally, a switch circuit is set on the connection link between the host and the slave to ensure that both the host and the slave can complete the data transfer when they are sending data. Interaction. At the same time, in order to ensure that the data can be accurately transmitted to the master or slave, a timing sequence for the chip to process communication is usually added, which increases the complexity of the communication circuit.

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