Patent attributes
A path data transmission unit in which, if one of a normal path for handling normal data and a test path for handling test data is selected, the other path is disabled to reduce power consumption; includes an edge detector, a first path data transmission block, and a second path data transmission block. The edge detector detects an edge of a test enable signal that indicates a normal operation mode or a test mode and transmits an edge detection signal. The first path data transmission block transmits a first path data in response to the test enable signal, the edge detection signal, a clock signal, normal data and a second path data. The second path data transmission block transmits the second path data in response to the test enable signal, the clock signal, and test data.
