Communication chip architecture based on IEC 61158 standard field bus

Abstract

The invention relates to a communication chip architecture based on an IEC 61158 standard field bus, which comprises an internal data bus control unit, a DMA field bus data transmission unit and a configuration unit; wherein, the internal data bus control unit is controlled by the configuration unit to finish the data transmission from the CPU data bus to the DMA field bus data transmission unit through the cache of the internal RAM memory; the DMA field bus data transmission unit is controlled by the configuration unit to finish the data transmission from the internal RAM memory of the internal data bus control unit to the field bus, and also to finish the data receiving and the data transmission of identifying information from the field bus to the internal RAM memory of the internal data bus control unit; and the configuration unit is controlled by an external CPU to finish the data transmission from the configuration information of the field bus data transmission to the internal data bus control unit and the DMA field bus data transmission unit. The invention is in accordance to the IEC 61158 specifications, facilitates development and debugging and also improves the work efficiency of microcontrollers.

Description

Technical field [0001] The invention relates to the design of an IEEE61158 standard fieldbus technology physical layer communication chip, in particular to a communication chip architecture based on the IEC61158 standard fieldbus that meets the application requirements of a fieldbus communication card. Background technique [0002] Fieldbus is an open, digital communication system used to connect intelligent measurement, control, and display equipment to the production site. It has the characteristics of full digitalization, two-way transmission, saving wiring and control room space, openness, intelligence and autonomy. At present, almost all large-scale automation instrument and control system manufacturers abroad are committed to the research and development of fieldbus technology, and continue to introduce their own fieldbus products. Fieldbus control system is a new generation of distributed networked control system. It is suitable for medium and large-scale industrial contro...

AI Technical Summary

Problems solved by technology

[0003] The communication chip system currently in use based on the IEC61158 standard field bus has a complex structure, low data transmission efficiency, high static power consumption, poor reliability, high manufacturing costs, and difficult product development, which cannot well meet the application requirements of the field bus.

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