Abstract

The article considers the implementation of the external memory interface based on National Instruments modular PXI equipment for environmental testing of digital signal processing (DSP) microprocessors. The block diagram of the developed device pointing out the advantages and disadvantages of this solution is provided. The block diagram of an improved external memory interface is also shown.

Highlights

  • One of the critical steps of the electronic equipment design for extreme environments is the initial evaluation and selection of system’s components [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15], even more so, for functionally complex ICs such as microprocessors and digital signal processors

  • The application of NI PXI-7841R reconfigurable I/O module for testing microprocessors is shown in [16]. This solution is based on the implementation of the direct memory access (DMA) controller interface

  • To test the efficiency of resulting external memory controller radiation behaviour researches of the digital signal processing (DSP) processor TMS320C50 (Texas Instrumenrs) were conducted in comparison with the use of DMA controller unit [16]

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Summary

Introduction

One of the critical steps of the electronic equipment design for extreme environments is the initial evaluation and selection of system’s components [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15], even more so, for functionally complex ICs such as microprocessors and digital signal processors. The market of modern digital signal processing microprocessors is represented by a large number of various architectures and families. This makes the creation of a versatile and flexible system for testing different DSPs an especially relevant problem. The application of NI PXI-7841R reconfigurable I/O module for testing microprocessors is shown in [16]. This solution is based on the implementation of the direct memory access (DMA) controller interface. The article considers the implementation of the external memory interface with the reconfigurable I/O module NI PXI-7841R

Equipment and software
Solution
Experimental results
Conclusions
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