An airborne memory read-write device based on SOPC technology

Abstract

The invention relates to an airborne memory read-write device based on SOPC technology, includes a main controller with FPGA as the core to build a minimum system, A logic decoding circuit based on CPLD chip, The control relay array completes the connection of the signal, voltage and ground of the tested memory port. The FPGA uses the serial port circuit to communicate with the host computer to receive the data reading and writing instructions and data files transmitted by the host computer, and uses the SOPC technology to customize the programming of the lower computer software to meet the reading and writing requirements of different memories. The invention has high universality and automation degree, and can complete the configuration of reading and writing to most memories only by changing software without changing hardware circuit. The invention has low cost, good portability and wide application range.

Description

technical field [0001] The invention relates to the field of memory, in particular to an on-board memory read-write device based on SOPC technology. Background technique [0002] There are many types of on-board memory, because of its particularity, ordinary programmers cannot meet its read and write operation requirements, and it is often necessary to design a special memory read and write device to complete its operation. "Measurement and Control Technology" Volume 32 Supplement, Page 473-475, 480, published in 2013, discloses the development of a special memory read-write device for repairing aircraft circuit boards. The upper computer uses the read-write control box as the lower computer, and uses the serial port as the communication method to realize read-write control and data display. The device can realize read and write operations on various onboard memories. The disadvantage is that due to the limited function and performance of the single-chip microcomputer, the ...

AI Technical Summary

Problems solved by technology

The device can realize read and write operations on various onboard memories. The disadvantage is that due to the limited function and performance of the single-chip microcomputer, the scalability of the target chip is not high, and the number and types of operating chips that can be accommodated are limited, and the device is mainly for reading and writing. Older, slower memory devices cannot effectively operate with newer on-board memory devices with faster read and write speeds

Another example is Chinese patent 201620658664 (disclosure date: March 8, 2017) which discloses a modular onboard memory reading and writing device, which includes FPGA as the control core to generate read and write timing, and can replace the fixture to complete the reading and writing of different devices. operation, and the read and write speed is fast; the disadvantage is that SOPC technology is not used, the pin configuration needs to be manually changed when replacing the device, and the type of storage memory is limited, etc.

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