What is Backdriving

What is Backdriving

Backdriving, znane również jako wymuszanie węzła, to cyfrowa procedura testowania w obwodzie, która jest stosowana do izolowania i testowania poszczególnych komponentów lub jednostek funkcjonalnych komponentu cyfrowego w module. Głównym celem backdriving jest zapewnienie prawidłowego testowania funkcjonalnego poprzez wymuszenie wymaganych stanów sygnałów na wejściach testowanego urządzenia (DUT).

During backdriving, the signals of logically preceding components are located at the inputs of the DUT when the supply voltage is switched on. To achieve this, the randomly applied signals are overwritten with defined test signals. This is done by drawing the outputs of the preceding devices to the required level using a sufficiently high current. It is crucial to monitor and, if necessary, limit the relatively high currents to prevent premature damage to the exaggerated output pin.

Real-time performance monitoring of the digital drivers used in the test system is considered the safest and most reliable method for successful backdriving. By ensuring accurate and controlled signal states at the inputs of the DUT, backdriving allows for thorough functional testing of digital components in a module.