Method and apparatus for monitoring general purpose input output, GPIO, signals
US9311206B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2014 |
| Grant date | Apr 12, 2016 |
| Priority date | — |
| Expiry date | Sep 10, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2029/0409
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for monitoring general purpose input output, GPIO, signals at GPIO pins of a GPIO port of a system on chip, SoC. The apparatus comprises a first checksum generation unit adapted to generate a first checksum on the basis of GPIO bits stored in GPIO registers of the SoC, being connected via corresponding input output, IO, pad circuits to provide analog GPIO signals at the GPIO pins. A second checksum generation unit is adapted to generate a second checksum on the basis of the analog GPIO signals at the GPIO pins representing the GPIO bits. Checker logic is adapted to compare the first checksum generated by the first checksum generation unit with a second checksum generated by the second checksum generation unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.