| 摘要 |
<p>The self-test device for checking drivers (20, 21) circuits connected to a bus, comprises an exclusive - OR circuit (12, 13) associated with each of the drivers (20, 21) for monitoring input signals (I0, I1) to the drivers (20, 21) and output signals (D0, D1) thereof and providing an error signal in the event of a disparity between the input and output signals of the drivers (20, 21). OR circuit (14) is connected to all of the exclusive - OR circuits (12, 13) to sense an error signal from any exclusive - OR circuit (12, 13) and a latch (25) connected to the OR - circuit provides an error indication to inform the system of any failure of the drivers. </p> |
