A communication system and method

Abstract

The present application discloses a communication system, which includes a master device, a slave device, and a programmable input and output device, wherein the master device and the slave device pass through the programmable input and output device, and the input and output device can be used as a multi The device converts a first serial clock signal line output by the master device into multiple second serial clock signal lines, and each second serial clock signal line controls a slave device respectively, so that the second serial clock signal line can be controlled by controlling the second The serial clock signal line avoids address conflicts. In addition, the first serial clock signal line is bidirectional, while the second serial clock signal line is unidirectional. When the master device communicates with the slave device, the programmable input and output devices can The first control instruction is sent to the master device to reduce the operating frequency of the master device, realize frequency synchronization between the master device and the slave device, and avoid abnormal access work. Correspondingly, the present application also discloses a communication method.

Description

technical field [0001] The present application relates to the communication field, and in particular to a communication system and method. Background technique [0002] In many scenarios, the master-slave device mode can be used to improve computing performance, improve computing reliability, or improve computing accuracy. The core idea of ​​the master-slave device mode is to decompose the original task into several semantically equivalent subtasks, and execute these tasks by dedicated worker threads. The processing results of the original task can be obtained by integrating the processing results of each subtask. [0003] Wherein, the master device (Master) distributes subtasks to the slave device (Slave), and the slave device returns the processing result of the subtask to the master device through an (Inter-Integrated Circuit, I2C) bus. I2C uses an addressable communication protocol, so a master device communicates with a slave device using a 7-bit or 10-bit address. Du...

AI Technical Summary

Problems solved by technology

[0004] However, additional multiplexers will increase hardware costs. For this reason, the industry often uses complex programmable logic devices (Complex Programmable Logic Device, CPLD) or Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA) and other programmable input and output devices (Input / Output, IO) can be used as multiplexers, but this kind of multiplexer formed by using existing devices can only transmit in one direction, specifically the transmission from the master device to the slave device, the master device The device cannot know the reaction of the slave device, and the frequency is not synchronized, which leads to abnormal access work

Images