Multi-interface bus converting expanding chip design

Abstract

The invention belongs to the technical field of data transmission and converting and particularly relates to a multi-interface bus converting expanding chip. The shortcoming that an existing chip can only convert and expand one kind of interfaces is overcome. The functions of different interface converting and various interface bus expanding are achieved. The requirements for different interface bus converting and expanding between main control CPUs, between a main control CPU and a peripheral and between peripherals are met. The chip comprises a main interface module, a main interface data processing logic part, a clock generator, a power supply management module, a double-interface large-capacity RAM storage, a chip inner controller, an expanding interface data processing logic part, an interrupt processing logic part and an expanding interface module. The expanding interface module can be configured to be 1-8 interfaces of different kinds flexibly. The chip has the advantages that converting and expanding between any main interface bus and expanding interface bus and between any expanding bus interfaces can be achieved, intelligent protocol processing is carried out through data, a unified data package format is formed for storing and processing, and the large-capacity double-interface RAM in the chip guarantees stored 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

Images