Communication channel calibration for drift conditions
DCFirst Claim
1. A method of operation of an integrated circuit component, the method used for calibrating a parameter associated with transmission of data on a communication channel, the method comprising:
- transmitting a calibration sequence used to establish an operation value that represents the parameter;
transmitting data in accordance with the operation value;
determining adjustment information for the parameter, interspersed with said transmitting data over the communication channel;
adjusting the operation value for the parameter using said adjustment information.
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Abstract
A method and system provides for execution of calibration cycles from time to time during normal operation of the communication channel. A calibration cycle includes de-coupling the normal data source from the transmitter and supplying a calibration pattern in its place. The calibration pattern is received from the communication link using the receiver on the second component. A calibrated value of a parameter of the communication channel is determined in response to the received calibration pattern. The steps involved in calibration cycles can be reordered to account for utilization patterns of the communication channel. For bidirectional links, calibration cycles are executed which include the step of storing received calibration patterns on the second component, and retransmitting such calibration patterns back to the first component for use in adjusting parameters of the channel at first component.
79 Citations
18 Claims
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1. A method of operation of an integrated circuit component, the method used for calibrating a parameter associated with transmission of data on a communication channel, the method comprising:
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transmitting a calibration sequence used to establish an operation value that represents the parameter; transmitting data in accordance with the operation value; determining adjustment information for the parameter, interspersed with said transmitting data over the communication channel; adjusting the operation value for the parameter using said adjustment information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An integrated circuit, comprising:
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an interface for a communication channel; logic to apply a parameter associated with transmission of data on the communication channel; logic to process a calibration sequence to establish an operation value that represents the parameter, and to transmit or receive data in accordance with the operation value; logic to determine adjustment information for the parameter, interspersed with said transmission or reception of data on the communication channel; and logic to adjust the operation value for the parameter using said adjustment information. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification