High-Speed Ethernet Transceiver Calibration with Echo Canceller Reuse

摘要

A method of operating a transceiver integrated circuit is disclosed. The method comprises generating test signals directed to testing one or more transceiver parameters. The test signals are transmitted from a digital domain to an analog domain along a transmit path, and looped-back from the transmit path to a receive path. Echo canceller circuitry coupled between the transmit path and the receive path is trained and generates a filtered output representing a metric indicative of the one or more transceiver parameters.