Patent ID: 6961862
Filing Date: 2005-11-01
Classification: G06F,G11C,H04L

Abstract:
1. A method for calibrating a communication channel, including a first component, a second component, and a communication link coupling the first and second components, the communication channel having a parameter with an operation value, comprising: setting the operation value of the parameter of the communication channel in one of the first and second components; distributing a reference clock signal to the first and second components; monitoring, using monitor circuits in one of the first and second components, a signal from a medium outside the communication channel, the signal having a characteristic which drifts relative to the reference clock signal at said monitor circuits by amounts that correlate with drift of the parameter of the communication channel, to track the amounts of drift in the characteristic; and in response to the monitoring, updating the operation value based on the amounts of drift in the characteristic of the signal.