FPGA configuration file downloading device

Abstract

The invention discloses an FPGA configuration file downloading device, which comprises a device body. The device body comprises a parallel port input end, a power converter, a parallel port downloading interface module and a system controller. The parallel port input end is in bidirectional connection with the parallel port data end of the computer. The system controller is in bidirectional connection with the parallel port input end and the parallel port downloading interface module. The output end of the parallel port downloading interface module is in bidirectional connection with the FPGA.The parallel port downloading interface module is connected with the input end of the power supply converter through a VDD, and the output end of the power converter is respectively connected with the crystal oscillator and the system controller. According to the invention, configuration file downloading and configuration file readback in a passive parallel mode are carried out on the FPGA through the parallel port data end of the computer. The device has the advantages of being simple in hardware circuit design, low in required component purchasing cost, friendly in man-machine interface, easy and convenient to use, reliable and stable in work and the like, and can be widely applied and popularized.

Description

technical field [0001] The invention relates to a device for downloading FPGA configuration files, in particular to a device for downloading FPGA configuration files through a parallel port of a computer in a passive parallel mode, and belongs to the technical field of field programmable gate array (Field Programmable Gate Arrays, FPGA) configuration downloading . Background technique [0002] FPGA is a programmable signal processing device. Users can define its functions by changing configuration information to meet design requirements. The main features of FPGA are: (1) have a programmable logic function module structure; (2) have a programmable input / output module structure; (3) have a programmable interconnect resource structure; (4) have a dedicated EDA (Electronic Design Automation, Electronic Design Automation) software to configure and download it. [0003] Compared with traditional digital circuit systems, FPGA has the advantages of programmable, high integration,...

AI Technical Summary

Problems solved by technology

At present, most of the download devices for FPGAs in the prior art are USB download devices, but the writing of the USB interface control protocol and the required supporting software are relatively complicated, and a special USB protocol conversion chip is required, and the development cost of the hardware system is relatively high.

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