FPGA configuration protection and control using hardware...

Details FPGA configuration protection and control using hardware... FPGA configuration protection and control using hardware...

2011-06-28

2011-06-28

Stoynov, Stefan (Department: 2116)

Electrical computers and digital processing systems: support

Reconfiguration

C713S001000, C326S038000, C326S039000, C714S725000, C716S116000

Reexamination Certificate

active

07971051

ABSTRACT:
An apparatus and method provides automatic reconfiguration of an FPGA, such as in case of lost configuration or configuration error, and software-controlled reconfiguration may be provided that does not require the use of additional devices. An apparatus for FPGA configuration protection comprises watchdog signal generator circuitry in the FPGA configured to output a watchdog signal when the FPGA is properly configured and watchdog circuitry configured to receive the watchdog signal and to initiate reconfiguration of the FPGA if the watchdog signal is not received for or within a predetermined time. The circuitry in the FPGA may be configured to receive a signal from a processor and to output the watchdog signal when the signal from the processor is received.

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