Double-receiving double-emitting programmable ARINC 429 communication interface chip

Abstract

The invention provides a double-receiving double-emitting programmable ARINC 429 communication interface chip, and aims to provide a double-receiving double-emitting HT 429 communication chip which is fast in data transmission, stable and reliable in work and higher in universality. The technical scheme of the invention is that a controller CPU (Central Processing Unit) performs data communication with the HT 429 interface chip through a bothway tristate data bus and a three-bit address bus, and the controller CPU carries out read and write operation on a transmitting controller, a receiving control register, a bumper occupancy state register, a work state register and four data registers of a communication interface unit in the HT 429 chip through the address bus and the data bus; the HT 429 chip carries out odd-even check and volume label check on received data, and data in accordance with requirements are input into an ARINC 429 received data storage; the CPU carries out write operation on two ARINC 429 transmitting data storage FIFO through the communication interface unit of the HT 429 chip respectively, data emitting of two channels is finished, data receiving of the two channels is finished by reading the FIFO data, and the double-receiving double-emitting HT 429 communication chip is formed.

Description

technical field [0001] The invention relates to an ARINC429 interface chip mainly suitable for a large number of electronic controllers of aeroengines, especially a programmable communication chip with multiple communication rates, which can realize ARINC429 double receiving and double sending ARINC429 communication special chip. Background technique [0002] With the development of digital technology and the emergence of microcomputers, more and more avionics devices have adopted aviation data bus for communication. Among them, ARINC429, as a digital information transmission system, has become the aviation industry standard stipulated in the communication of avionics systems. ARINC429 is a specification that defines avionics and systems and communicates with each other. It is a technical standard published and used by ARINC (American Radio Technology Corporation) in September 1977. ARINC429 uses a unidirectional data transfer standard. The ARINC429 technical standard desc...

AI Technical Summary

Problems solved by technology

Currently commercially available FPGA-based ARINC429 interface chip transmitters and ARINC429 bus interface chip dedicated chips are mostly dual-receiving and single-transmitting dedicated chips, with a single receiving and collecting frequency, and the sending FIFO memory has only 8 32-bit words. There is no receiving FIFO and no receiving data. Label filtering check function

At present, in order to meet the needs of dual-receipt and dual-transmission communication, aviation ARINC429 communication is generally realized by FPGA, DSP and high-speed submerged processors, etc. These implementation methods require complex software and hardware technology, high power consumption, and poor versatility

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