Power-on reset method and circuit using MIPI standard circuit

Abstract

The invention provides a power-on reset method and circuit using an MIPI standard circuit and the MIPI standard circuit, and belongs to the technical field of integrated circuits. The power-on reset circuit comprises a reference voltage module, a power-on reset module, a reset signal conditioning module and an output module, wherein the reference voltage module, the power-on reset module, the reset signal conditioning module and the output module are coupled in sequence. The reference voltage module generates reference voltage and sends the reference voltage to the power-on reset module. The power-on reset module generates a power-on reset signal according to the reference voltage and sends the power-on reset signal to the reset signal conditioning module. The reset signal conditioning module conditions the power-on reset signal and sends the conditioned power-on reset signal to the output module. According to the technical scheme, the MIPI interface circuit is adopted and can work under a wide range of supply voltage, the MIPI interface circuit has accurate and controllable reset threshold voltage and reset delay time under various voltages, and reset signals are selectable and adjustable.

Description

technical field [0001] The invention relates to the technical field of integrated circuits, in particular to a power-on reset method and circuit using MIPI standard circuits. Background technique [0002] MIPI stands for Mobile Industry Processor Interface (MIPI for short), and is an open standard developed for mobile application processors initiated by the MIPI Alliance. [0003] At present, MIPI is mainly used in the mobile phone industry, mobile phone equipment and peripheral equipment, including processors, baseband modems, cameras, displays, memory, radio frequency equipment and so on. With the popularization of 4G (LTE Advanced), the rapid development of semiconductor manufacturing technology, and the demand of mobile phone users for multimedia applications, the popularization of high-performance mobile phones is inevitable. The application of high-performance processors, baseband modems, cameras, displays and other equipment requires higher data transmission speed an...

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Problems solved by technology

[0005] To sum up, the power-on reset circuit required in the sub-equipment using the MIPI interface in the prior art is expensive, cannot be fully integrated and is not easy to implement, so that the MIPI interface circuit can only work in a narrow power supply voltage range, and cannot be used in various Under these conditions, it has precise and controllable reset threshold voltage and reset time, so as to ensure the stable operation of the MIPI interface circuit

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