A FPGA emulator switching device and method

Abstract

The invention provides a switching device and method for an FPGA emulator, comprising a shell and an intermediate conversion module; the shell is provided with an input port and more than two output ports; it also includes a switch button to control the intermediate conversion module, and the input port and the output port The corresponding relationship is selected; more than two output ports are connected to the indicator lights, which correspond to the output ports one by one; when there is one input port, the switch button controls the intermediate conversion module to select the output port corresponding to the input port; the input port includes n, and the output port There are n ports, when n≥2; the connection indicators of the input ports correspond to the input ports one by one; the switch button controls the middle switching module to select the connection correspondence between a single input port and a single output port, and the m input ports actually used One-to-one connected connection relationship with m output ports, and none connected connection relationship. The number of plugging and unplugging of the FPGA board interface and the plugging and unplugging of the emulator is reduced, and at the same time, the probability of easy damage due to multiple plugging and unplugging of the download port of the emulator is reduced.

Description

technical field [0001] The invention relates to the field of communication emulation switching devices, in particular to an FPGA emulator switching device and method. Background technique [0002] With the gradual development of digital circuits, FPGA has been used more and more due to its powerful online programming capability. In the use of FPGA, code download and online debugging are usually completed by connecting the emulator through the USB interface of a general-purpose computer. However, one USB port of a computer can only be connected to one emulator corresponding to the download port of one FPGA, so for boards with multiple FPGAs, the following two methods are usually used to realize the code download and online debugging functions: 1. Multiple emulators perform code download and online debugging for each FPGA; 2. One emulator is used multiple times, and the code download and online debugging for multiple FPGAs can be realized by plugging and unplugging back and f...

AI Technical Summary

Problems solved by technology

However, for digital circuits, in order to prevent the impact of static electricity on the FPGA when plugging and unplugging the downloader, it is necessary to power off the board before switching operations, and the download port of the emulator is easily damaged by repeated plugging and unplugging, which is very inconvenient in use

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