Multi-channel communication system based on LPC bus of Feiteng platform

Abstract

The invention provides a multi-channel communication system based on a Feiteng platform LPC bus. A programmable logic device supporting various level standards is used as a communication data intermediate processing module between the Feiteng chip and a plurality of external devices, so that a level conversion and protocol conversion chip is omitted, and the Feiteng chip can access a plurality oftypes of external devices through one LPC bus. The multi-channel communication system is simple in circuit structure; manufacturing cost is low, meanwhile, main modules of the multi-channel communication system are integrated in the programmable logic device; and only one path of LPC bus is needed for data transmission of the Feiteng chip, so that the multi-channel communication system is easy toexpand, high in real-time performance, good in portability and low in hardware resource requirement, the software workload is remarkably reduced, and the multi-level requirement of an application system is greatly met.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a multi-channel communication system based on the Feiteng platform LPC bus. Background technique [0002] The LPC (Low Pin Count, low pin interface) bus is a bus protocol proposed by Intel Corporation, which is mainly used in chip access to external devices. The LPC bus is used in the communication between the Phytium chip and external devices. Due to the defect of the Phytium chip itself, its LPC interface can only access 4-byte aligned addresses, and the voltage of the LPC interface of the Phytium chip does not match the external device, so the Phytium chip cannot Instead of directly communicating with external devices through the LPC bus, it is necessary to directly add an information conversion module between the Feiteng chip and the external device to convert the information output by the LPC interface of the Feiteng chip into information that matches the e...

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Problems solved by technology

[0004] In view of this, the present invention provides a multi-channel communication system based on the LPC bus of the Feiteng platform to solve the problem of increasing the excessive hardware overhead and software overhead when the Feiteng chip communicates with multiple external devices in the prior art. cost problem

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