An integrated scannable interface for testing memory. The interface
includes a selection device for selecting a signal from at least two
input signals responsive to an activation signal, a first storage device
coupled to the output of the selection device for storing the signal
responsive to a first enable signal and generating an output signal for
the memory. The first storage device is connected at the input node of
the memory, and a second storage device is coupled at its input to the
first storage device for storing the output signal responsive to a second
enable signal and generating a test signal for testing the memory. The
output signal is observed for debugging faults between the integrated
scannable interface and the memory and for debugging faults between the
first and second storage devices.