Processing device with self-scrubbing logic
| DWPI Title: Processing device for use in aerospace applications, has self-scrubber logic adapted to output feed signal to external memory in response to compromised data with threshold level of bits, where feed signal is output by logic |
| Abstract: An apparatus includes a processing unit including a configuration memory and self-scrubber logic coupled to read the configuration memory to detect compromised data stored in the configuration memory. The apparatus also includes a watchdog unit external to the processing unit and coupled to the self-scrubber logic to detect a failure in the self-scrubber logic. The watchdog unit is coupled to the processing unit to selectively reset the processing unit in response to detecting the failure in the self-scrubber logic. The apparatus also includes an external memory external to the processing unit and coupled to send configuration data to the configuration memory in response to a data feed signal outputted by the self-scrubber logic. |
| Use: Processing device for use in aerospace, railways, land vehicles and space-based applications. |
| Advantage: The device allows a processing unit to eliminate need for another device possibly paired with the external memory to perform error checking on the processing unit. The self-scrubber logic can simply facilitate rewriting of the flipped bits in configuration memory to correct logic levels. |
| Novelty: The device (105) has a configuration memory (109) loaded with configuration data from an external memory (130). A self-scrubber logic (107) is adapted to read the configuration memory to detect compromised data stored in the configuration memory and correct the compromised data. The self-scrubber logic is adapted to output a data feed signal to the external memory in response to the compromised data with a threshold level of flipped bits, where the data feed signal is output by the self-scrubber logic to facilitate loading of the configuration data into the configuration memory. |
| Filed: 1/18/2016 |
| Application Number: US14997969A |
| Tech ID: SD 12505.2 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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