Patent ID: 8098724
Filing Date: 2012-01-17
Classification: H04B,H04L

Abstract:
1. Circuitry for receiving a serial data signal comprising: adjustable equalizer circuitry for receiving the serial data signal and producing an equalized version of that signal, the equalizer circuitry having a controllably variable gain; and eye monitor circuitry for monitoring at least one of eye height and eye width of an eye of the equalized version and controlling the gain based at least in part on the one of eye height and eye width detected by the eye monitor circuitry; wherein the eye monitor circuitry comprises: a reference source against which the at least one of eye height and eye width is compared, the reference source comprising at least one of: circuitry for detecting a DC component of the serial data signal as a source of reference eye height, and circuitry for detecting an AC component of the serial data signal as a source of reference eye width.