FPGA emulator switching device and method

A switching device and emulator technology, applied in the direction of instruments, electrical digital data processing, electrical components, etc., can solve the problems of easy damage and inconvenient use of the download port, and achieve the effect of reducing the number of plugging and unplugging and reducing the probability of easy damage.

Active Publication Date: 2017-12-29
CHENGDU AEROSPACE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • FPGA emulator switching device and method
  • FPGA emulator switching device and method
  • FPGA emulator switching device and method

Examples

Experimental program
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specific Embodiment 1

[0028] Such as figure 1 shown and figure 2 Shown, a kind of FPGA emulator switching device comprises the shell of switching device and intermediate conversion module; Described shell is provided with input port and more than two output ports; Select the corresponding relationship between the port and the output port; it also includes more than two output port connection indicator lights, which correspond to the output port one by one;

[0029] In this specific embodiment, there is one input port, and the switching button controls the intermediate conversion module to select the output port corresponding to the input port.

[0030] For the FPGA emulator, the input port includes 6 input test pins of VCC, GND, TMS, TCK, TDO and TDI; the IO port on the intermediate conversion module is connected to the 4 pins of TMS, TCK, TDO and TDI of the input port, The VCC and GND of the intermediate conversion module are connected to the VCC and GND pins of the input port respectively, and...

specific Embodiment 2

[0031] A kind of FPGA emulator switching device, comprises the shell of switching device and intermediate conversion module; Described shell is provided with input port and more than two output ports; Also comprises switching key, is used for controlling intermediate conversion module, input port and output Select the corresponding relationship between the ports; it also includes two or more output port connection indicator lights, which correspond to the output ports one by one;

[0032] The input port includes n, the output port includes n, and the n≥2; it also includes, the input port is connected to the indicator light, which corresponds to the input port one by one; the switching button controls the middle switching module to select a single input port and a single The connection connection relationship between the output ports, the one-to-one connection connection relationship between the actually used m input ports and the m output ports, and the connection connection re...

specific Embodiment 3

[0035] On the basis of the specific embodiment 2, there are 4 input ports and 4 output ports. In this specific embodiment, the intermediate conversion module realizes 18 different connection modes of 4 input ports and 4 output ports: A. Only input port 1 is connected to output port 1, B. Only input port 1 is connected to output port 1. Output port 2 is connected, C. Only input port 1 is connected to output port 3, D. Only input port 1 is connected to output port 4, E. Only input port 2 is connected to output port 1, F. Only input port 2 is connected to output port 2 is connected, G. only input port 2 is connected with output port 3, H. only input port 2 is connected with output port 4, I. only input port 3 is connected with output port 1, J. only input port 3 is connected with output port 2 , K. Only input port 3 is connected to output port 3, L. Only input port 3 is connected to output port 4, M. Only input port 4 is connected to output port 1, N. Only input port 4 is connected...

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Abstract

The invention provides a FPGA emulator switching device and method. The FPGA emulator switching device comprises a shell, an intermediate switching module, a switching button and more than two output port connected indicator lamps; wherein the shell is provided with input ports and more than two output ports; the switching button controls the intermediate switching module to select the corresponding relationship between the input ports and the output ports; and the output port connected indicator lamps correspond to the output ports one by one. When the number of the input port is one, the switching button controls the intermediate switching module to select the output port corresponding to the input port; when the number of the input ports is n, then the number of the output ports is n, and the n is greater than or equal to 2; the indicator lamps connect the input ports and correspond to the input ports one by one; and the switch button controls the intermediate switching module to select the connection relationship between a single input port and a single output port, the one by one connection relationship between the actually used m input ports and m output ports, and the connection relationship that is not connected. By means of the FPGA emulator switching device, the number of insertion and extraction times of the FPGA card interface and the number of insertion and extraction times of the emulator are reduced, and the probability of easy damage caused by the multiple times of insertion and extraction of the emulator downloader 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K17/00H03K17/22G06F13/40
CPCG06F13/4022H03K17/007H03K17/22
Inventor 武昕坤杨露王玉鹏张琴刘兵徐龙曾超杨孟超王仕明
Owner CHENGDU AEROSPACE COMM EQUIP CO LTD
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