Patent ID: 7912161

Claim:
A method for establishing convergence of an adaptive equalizer in a receiver of an asynchronous communications system, the adaptive equalizer for removing inter-symbol interference (ISI) from a received data stream before providing it to a clock and data recovery module, the method comprising the steps of: a. configuring the equalizer with an initial set of input conditions; b. performing Layer 1 protocol delineation and framing on a recovered data stream from the clock and data recovery module; c. determining whether the Layer 1 protocol delineation and framing exceeded a minimum Layer 1 threshold performance indicative of achieving a satisfactory bit error rate (BER) for the Layer 1 protocol delineation and framing; d. if the Layer 1 protocol delineation and framing did not exceed the minimum Layer 1 threshold performance, reconfiguring the equalizer with a subsequent set of input conditions and repeating steps b. through d; e. calculating a bit error rate of the Layer 1 protocol delineation and framing; f. if the bit error rate for the Layer 1 protocol delineation and framing exceeds a minimum acceptable Layer 1 bit error rate, reconfiguring the equalizer with a subsequent set of input conditions and repeating steps b. through f. g. performing Layer 2 protocol delineation and framing on a recovered data stream from the clock and data recovery module; h. determining whether the Layer 2 protocol delineation and framing exceeded a minimum Layer 2 threshold performance indicative of achieving a satisfactory bit error rate (BER) for the Layer 2 protocol delineation and framing; and i. if the Layer 2 protocol delineation and framing did not exceed the minimum Layer 2 threshold performance, reconfiguring the equalizer with a subsequent set of input conditions and repeating steps b. through i.