Patent ID: 7308628
Filing Date: 2007-12-11
Classification: G01R,G11C

Abstract:
1. A unidirectional input switching arrangement for a circuit, comprising: a signal connection configured to couple with and receive an input signal from a test apparatus; a unidirectional input driver connected to the signal connection via an input of the input driver, the unidirectional input driver being operable to condition the input signal applied to the signal connection into an internal input signal to be processed by internal circuits, wherein the internal circuits are coupled via a connection line to an output of the input driver; and a transfer switching device, which is configured to be controlled by a test control signal and which, during a test mode of the circuit, is configured to couple the input of the input driver to a test signal line, wherein the test signal line is configured to route a test signal to the input of the input driver to facilitate testing of a parameter of the input driver.