Patent ID: 7916780

Claim:
An adaptive equalizer system, comprising: an equalizer receiving data over a serial communication link and adjusting an amplitude of the received data across a frequency range of the received data to generate equalized data; a phase detector coupled to the equalizer and receiving the equalized data and generating recovered data together with timing data indicating timing of the recovered data with respect to a reference clock timing; and a decoder decoding the recovered data and the timing data to generate a first equalizer adjustment signal indicating that an equalizer strength of the equalizer is to be increased or decreased based upon the timing data and a frequency pattern of the recovered data; and an accumulation module coupled to the decoder and the equalizer, the accumulation module accumulating the first equalizer adjustment signal to generate a second equalizer adjustment signal for controlling the equalizer strength of the equalizer; wherein the equalizer comprises a plurality of amplifier stages, each of the amplifier stages having a DC gain that is adjusted by the second equalizer adjustment signal.