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Multifunctional interruption waveform generator circuit based on electronic design automation (EDA) technology and control method thereof

A waveform generator and multi-functional technology, which can be used in instruments, electrical digital data processing, special data processing applications, etc.

Inactive Publication Date: 2013-06-19
SHANGHAI AVIATION ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the interrupt processing function of the processor takes too long (beyond the interrupt output cycle), the waveform output is interrupted twice, resulting in frame loss in 429 communication

Method used

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  • Multifunctional interruption waveform generator circuit based on electronic design automation (EDA) technology and control method thereof
  • Multifunctional interruption waveform generator circuit based on electronic design automation (EDA) technology and control method thereof
  • Multifunctional interruption waveform generator circuit based on electronic design automation (EDA) technology and control method thereof

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Embodiment Construction

[0030] The invention provides a customizable and generalized multifunctional interrupt waveform generator, which realizes the modular design based on EDA technology, through CPLD / FPGA processing or relay interrupt output.

[0031] attached figure 2 It is a functional block diagram of interrupt processing in the present invention, including an interrupt waveform generator, an interrupt logic controller, a processor, and several interrupt sources. Various interrupt sources are output to the interrupt logic controller or directly output to the interrupt waveform generator, while the interrupt logic controller processes the interrupt priority and converts various input signals into a unified format. The interrupt output signal is output to the interrupt waveform generator. The waveform generator processes the interrupt waveform according to the actual hardware circuit and outputs it to the interrupt input terminal of the processor.

[0032] attached image 3 It is the working lo...

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Abstract

The invention provides a multifunctional interruption waveform generator based on electronic design automation (EDA) technology. A state machine and a counter are main logical constituent parts of the multifunctional interrupting waveform generator. Through methods of setting interrupt response time, interrupt retention time and interrupt protection time of hardware levels reasonably and the like, design shortcomings caused by interrupt source difference, processor difference, bus access speed difference, logical processing difference and the like can be overcome, software work amount and software design risks are reduced effectively, and system stability is improved greatly.

Description

technical field [0001] The invention is a multifunctional interruption waveform generator based on EDA technology, which realizes the modular design of interruption output waveform processing in a digital system. Background technique [0002] Due to the vigorous development of emerging EDA technology, engineering designers are more and more inclined to complete various data communication processing and interface conversion functions in CPLD / FPGA. The requirements for system stability and maturity are getting higher and higher. As an important part of system design, interrupt processing is more and more prominent in its diversity and complexity. [0003] In the previous interface design and communication processing based on EDA technology, the interrupt output was mostly integrated in a specific functional module (such as the ARINC429 control below) or a simple combinational logic conversion was performed on the external interrupt trigger signal, and the generation of the in...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 杨文生
Owner SHANGHAI AVIATION ELECTRIC
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