Design of a multi-interface bus conversion extension chip

Abstract

The invention belongs to the technical field of data transmission and conversion, and in particular relates to a multi-interface bus conversion expansion chip. The purpose is to provide a multi-interface conversion and expansion chip, overcome the shortcomings of existing interface chips that can only convert and expand one interface, realize the function of different interface conversion and expansion into multiple interface buses, and meet the requirements of the main control CPU in embedded systems. Between, between the main control CPU and peripherals, between peripherals and peripherals, different interface bus conversion and expansion requirements. Including main interface module, main interface data processing logic, clock generator, power management module, dual-port large-capacity RAM memory, chip internal controller, expansion interface data processing logic, interrupt processing logic, and expansion interface module. The expansion interface module can be flexibly configured into 1-8 different types of interfaces. The advantage of the present invention is that it can realize the conversion and expansion between any main interface bus and expansion interface bus, any expansion bus interface, and carry out intelligent protocol processing through data to form a unified data packet format storage and processing, large-capacity inside the chip Dual-port RAM provides guarantee for storing data.

Description

technical field [0001] The invention relates to an interface bus chip, in particular to a multi-interface bus conversion expansion chip. Background technique [0002] In computer, automation and embedded systems, the CPU needs to control and connect various peripherals. If the interface of the CPU is not enough or not compatible with the peripheral interface, the interface bus extension and conversion chip are needed to expand the interface bus. and convert. [0003] At present, the commonly used interface buses in electronic systems include USB, IIC, SPI, UART, CAN, LIN and parallel interfaces. General interface bus conversion and expansion devices adopt a single architecture mode to realize one interface bus to another interface The conversion or expansion of the bus, with the increase of peripherals used in the system, the number and types of peripheral interface buses are increasing. When the system is applied to multiple interfaces, it is necessary to use a variety of ...

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used interface buses in electronic systems include USB, IIC, SPI, UART, CAN, LIN and parallel interfaces. General interface bus conversion and expansion devices adopt a single architecture mode to realize one interface bus to another interface The conversion or expansion of the bus, with the increase of peripherals used in the system, the number and types of peripheral interface buses are increasing. When the system is applied to multiple interfaces, it is necessary to use a variety of devices to achieve expansion Reduces the complexity of system software and hardware design, reduces the flexibility and scalability of system applications

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