Patent ID: 8031763

Claim:
An integrated circuit comprising: a continuous-time equalizer (CTE) to receive an input from a lossy channel and to provide an output; and an automatic tuning circuit coupled with the CTE, the automatic tuning circuit capable of altering a magnitude response of the CTE, wherein the magnitude response is a function of a frequency of a signal received from the lossy channel, wherein the automatic tuning circuit is to comprise: a peak detector to receive the output of the CTE and to generate a voltage that is proportional to a magnitude of the output of the CTE and an up/down counter to receive an up/down signal and to provide a control signal to the CTE, wherein the control signal is to indicate a number of active capacitors in a switching series, wherein the peak detector is to receive a signal having a target data rate and a signal having a constant data pattern and wherein the peak detector is to provide: a magnitude (M(f 1 )) proportional to the signal having the target data rate; and a magnitude (M 2 (f 2 )) proportional to the signal having the constant data pattern.