I3C bus control interface circuit

Abstract

The invention relates to the technical field of I3C integrated circuits, and provides an I3C bus control interface circuit, which comprises a master device, a slave device, an I3C bus, an interface module, a pull-up resistor management module and a pull-up resistor module. When the I3C bus carries out address operation, the master device detects a transmission address code of the I3C bus; when themaster device detects that the transmission address code of the I3C bus meets a preset rule, the master device detects a level state of the I3C, controls connection or disconnection of the interfacemodule and the I3C bus through configuration of a switch mode of the interface module according to the level state, and conducts or breaks the connection between the I3C bus and the pull-up resistor module by controlling a switch state of the pull-up resistor management module according to the transmission address code and the level state, so that the purposes of dynamically controlling the connection or disconnection between the I3C bus and the pull-up resistor module and dynamically adjusting the connection state of a pull-up resistor of the I3C bus in order to reduce the power consumption of the pull-up resistor and the power consumption of the I3C bus circuit.

Description

technical field [0001] The invention relates to the technical field of I3C integrated circuits, in particular to an I3C bus control interface circuit. Background technique [0002] The full name of IP core is intellectual property core (Intellectual Property Core), which refers to a chip design module provided by a certain party. Designers can use IP cores as the basis for logic design of application-specific integrated circuits or field programmable logic gate arrays (FPGAs) to shorten the Design cycle, improve design quality and efficiency. [0003] With the rapid development of mobile devices, the disadvantages of sensor devices such as I2C (Inter-Integrated Circuit) and SPI (Serial Peripheral Interface) have gradually emerged. Then the MIPI Alliance proposed the I3C standard specification, which absorbed, combined and improved I2C, Interface solutions such as SPI and UART (Universal Asynchronous Receiver / Transmitter) provide the necessary convenience and system-level ad...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of I3C bus control interface circuit, aiming at solving the problem existing in the prior art that the power consumption of the pull-up resistor cannot be reduced on the basis of ensuring the existing performance of the I3C circuit

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