Multi-way ARINC429 data transmit-receive circuit structure based on development of DSP and CPLD

Abstract

The invention discloses a multi-way ARINC429 data transmit-receive circuit structure based on the development of a DSP and a CPLD. The multi-way ARINC429 data transmit-receive circuit structure based on the development of the DSP and the CPLD comprises a DSP circuit, multiple sets of ARINC429 bus transmit-receive chip circuits, an auxiliary control circuit achieved through CPLD programming, wherein a data end of each ARINC429 bus transmit-receive chip is connected with the DSP, a control end of each ARINC429 bus transmit-receive chip is connected with the CPLD, the DSP circuit achieves control over the multiple sets of ARINC429 bus transmit-receive chips by sending an control instruction to a register circuit achieved through CPLD chip programming, and receiving decoding and sending coding of ARINC429 data are achieved through software in a DSP chip. The multi-way ARINC429 data transmit-receive circuit structure based on the development of the DSP and the CPLD can achieve real-time reading and sending of multiple ways of ARINC429 data through a data bus of the DSP chip, avoids collision, loss and error codes of the data, and achieves high-speed processing of the data.

Description

technical field [0001] The invention relates to the technical field of ARINC429 data transceiver circuit, in particular to a multi-channel ARINC429 data transceiver circuit structure developed based on DSP and CPLD. Background technique [0002] At present, the known ARINC429 data transceiver circuit based on DSP and FPGA is composed of DSP circuit, FPGA circuit and ARINC429 bus transceiver chip circuit. Transceiver capability, but receiving ARINC429 data from multiple channels at the same time is prone to data collision, loss and bit error. The known multi-channel ARINC429 receiving circuit based on DSP and CPLD occupies too many external interrupts of DSP, which makes DSP extremely limited in circuit function, and communication conflicts are prone to occur when multi-channel data is sent and received at the same time, making data processing in DSP In the process, it is easy to lose the reception of multi-channel ARINC429 data. Contents of the invention [0003] The pre...

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Problems solved by technology

[0002] At present, the known ARINC429 data transceiver circuit based on DSP and FPGA is composed of DSP circuit, FPGA circuit and ARINC429 bus transceiver chip circuit. Transceiver capability, but multiple channels receive ARINC429 data at the same time, prone to data collision, loss and bit error

The known multi-channel ARINC429 receiving circuit based on DSP and CPLD occupies too many external interrupts of DSP, which makes DSP extremely limited in circuit function, and communication conflicts are prone to occur when multi-channel data is sent and received at the same time, making data processing in DSP In the process, it is easy to lose the reception of multi-channel ARINC429 data

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