Universal interface expansion system based on Feiteng series PCIE (Peripheral Component Interface Express) bus

Abstract

The invention discloses a universal interface expansion system based on a Feiteng series PCIE (Peripheral Component Interconnect Express) bus and an interrupt control method and device.The system adopts a Feiteng CPU (Central Processing Unit) and a programmable logic device, the Feiteng CPU is interconnected with the programmable logic device through the PCIE bus, and the programmable logic device is interconnected with a corresponding peripheral device by expanding a corresponding bus interface; the programmable logic device comprises a PCIE interface module, a PCIE hard core, an address decoding module, an interrupt management module and a bus interface module. Various types of peripheral devices can be configured by the Feiteng chip through PCIE, and interface protocol IP cores of different peripheral devices are realized through the programmable logic device, so that the use of chip devices and the like is reduced, the complexity of system design is simplified, and the cost is reduced. And the system has the characteristics of simple circuit structure, low cost, easy interface expansion and high stability, greatly meets the multi-application requirements of the system, and is suitable for the special fields of military use, industry and the like.

Description

technical field [0001] The invention relates to the technical field of Feiteng chip application, and in particular discloses a general interface expansion system, interrupt control method and device based on the Feiteng series PCIE bus. Background technique [0002] Feiteng series CPUs come with some communication interfaces that can communicate with external devices, but in different application environments, especially in the design of some customized platforms based on Feiteng series, due to the limitation of the number of communication interfaces built in Feiteng chips, it is impossible to meet the requirements. When there are multiple types and numbers of peripheral interface circuits, different communication interfaces need to be expanded according to the actual situation to meet the overall functional design of the system. If a hardware expansion method is adopted to solve the above problems, it will increase the cost of system hardware, which is not conducive to syst...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a general interface expansion system, interrupt control method and device based on the Feiteng series PCIE bus, aiming to solve the problem that using hardware to expand the communication interface of the Feiteng series CPU in the prior art will increase the system cost overhead and is not conducive to system integration technical issues

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