I3C circuit device and system and communication method

Abstract

The invention belongs to the field of integrated circuits, and provides an I3C circuit device and system and a communication method. The I3C circuit device includes an internal state machine and an interface control circuit; the interface control circuit includes a command cache module and a command parsing module; the command cache module is used for obtaining control flows sent by a client and arranging the control flows in order, and when control commands of the control flows are not executed, the control commands are saved; the command parsing module is used for obtaining the state of theinternal state machine, when the state of the internal state machine is an executable command state, the control commands are obtained from the command cache module and then parsed to I3C output command signals, and then the I3C output command signals are output to the internal state machine; the internal state machine is used for sending the I3C output command signals to an I3C bus connected withthe internal state machine. By means of the I3C circuit device and system and the implementation method, the interface of I3C control can be simplified, and the robustness of a communication system is increased.

Description

technical field [0001] The invention belongs to the field of integrated circuits, and more specifically relates to an I3C circuit device, system and communication method. Background technique [0002] Intellectual Property Core (IP core for short) refers to a chip design module provided by a certain party. Designers can use IP cores as the basis for ASIC or Field Programmable Gate Array (Field-Programmable Gate Array, FPGA) logic design to shorten the design cycle and improve design quality and efficiency. [0003] With the increasing application of integrated circuit chips, the disadvantages of devices using the I2C (Inter-Integrated Circuit) protocol are gradually revealed. Then the Mobile Industry Processor Interface (MIPI) Alliance proposed a new I3C standard specification. The new I3C standard specification has the advantages of effectively reducing the physical interface of the integrated circuit chip system, supporting low power consumption, high data rate and other ...

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Problems solved by technology

[0004] According to the new I3C standard specification of the MIPI Alliance, I3C includes more abundant functions. If the traditional digital circuit control interface is used, such as the method of issuing control instructions and transmitting data in strict accordance with the number of clock cycles during transmission, the interface must be controlled during application. On the other hand, if the control signal is configured with a ready (ready) signal and the data is configured with a valid (valid) signal, although the user's control logic will be simplified, but due to the rich functions of the I3C specification, it will cause The number of interfaces will be very large, so it is necessary to optimize the control interface circuit, and realize the relevant communication functions of I3C under the condition that the control interface circuit is as simple as possible

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