On-line programming FPGA reconfigurable device

Abstract

The invention discloses an on-line programming FPGA reconfigurable device which comprises an FPGA, a configuration chip, a configuration chip controller and a DSP processor. The DSP processor gives out a control gating command character string to the configuration chip controller after receiving a reconfigurable command; the control gating command character string after being resolved by the configuration chip controller arranges the nCONFIG signal line of the configuration chip controller into a low level and arranges the nCE signal line into a high level, thereby leading the FPGA to releasethe control right on the configuration chip; then the DSP processor stores the received configuration data into the configuration chip; after the storage of the configuration data is accomplished, the nCONFIG signal line of the configuration chip controller is arranged into the high level and the nCE signal line is arranged into the low level, thereby leading the FPGA to re-obtain the control right on the configuration chip; and after the control right is re-obtained, the FPGA downloads the data in the configuration chip for re-configuration after the rising edge of the nCONFIG signal line isdetected, thereby accomplishing the on-line programming reconfiguration of FPGA.

Description

technical field [0001] The invention relates to the technical field of FPGA control, in particular to an FPGA reconfigurable device for online programming that selects one of the operating modes by reconfiguring the FPGA control logic in a system with multiple operating modes. Background technique [0002] Reconfigurable architecture refers to the ability to use redistributed hardware resources to flexibly change its own architecture according to different application requirements, so as to provide a matching architecture for each specific application requirement. [0003] The reconfigurable system is to use the reconfigurable characteristics of FPGA to complete the change of the reconfigurable architecture, that is, the reconstruction of the working mode, so as to use the limited hardware resources to complete a variety of logic functions. This is the FPGA reconfigurable system. design principles. The so-called FPGA reconfiguration means that the configuration data of the ...

AI Technical Summary

Problems solved by technology

The main task of this FPGA reconfigurable device design is to complete the design of the FPGA configuration controller. The selection of the controller is more flexible, but the design process is more complicated, and a large storage space is required to store the configuration data stream, which is a waste of time. Hardware resources, if it is to reconfigure multiple FPGAs, the required hardware resources will also increase exponentially, which obviously does not meet the original intention of reconfigurable design

Images