Patent ID: 6873939
Filing Date: 2005-03-29
Classification: G01R,G11C,H04B

Abstract:
1. A digital signaling system comprising: a transmit circuit, the transmit circuit comprising a transmit data input and a transmit data output, the transmit circuit producing a transmit data output signal at the transmit data output based on a transmit data input signal from the transmit data input when the transmit circuit is operating in a normal mode, the transmit circuit further comprising a transmit repeating pattern generator producing a repeating pattern signal, the transmit circuit producing the transmit data output signal at the transmit data output based on the repeating pattern signal when the transmit circuit is operating in a test mode; and a receive circuit, the receive circuit operably coupled to the transmit circuit and receiving the transmit data output signal from the transmit circuit at a receive data input, the receive circuit comprising a receive data output, the receive circuit producing a receive data output signal at the receive data output based on the transmit data output signal when the receive circuit is operating in the normal mode, the receive circuit further comprising a receive repeating pattern generator producing the repeating pattern signal, the receive circuit producing a comparison signal based on a comparison dependent on the transmit data output signal and the repeating pattern signal when the receive circuit is operating in the test mode.