Synchronizing timing domains based on state variables

A synchronization circuit, comprising:

• a comparison circuit to determine state-variable differences between a first clock signal in a first timing domain and a second clock signal in a second timing domain;
• means, electrically coupled to the comparison circuit, for collecting a temporal history of the state-variable differences between the first clock signal and the second clock signal;
• an estimation circuit, electrically coupled to the means, to generate a synchronization acquisition curve based on the temporal history;
• a summation circuit, electrically coupled to the comparison circuit and the estimation circuit, to sum the state-variable differences output by the comparison circuit with the synchronization acquisition curve;
• and
• a synchronization processing circuit, electrically coupled to the summation circuit, to determine the second clock signal based on the sum of the state-variable differences and the synchronization acquisition curve.

An electronic device, comprising a synchronization circuit, wherein the synchronization circuit includes:

• a comparison circuit to determine state-variable differences between a first clock signal in a first timing domain and a second clock signal in a second timing domain;
• an aggregation circuit, electrically coupled to the comparison circuit, to collect a temporal history of the state-variable differences between the first clock signal and the second clock signal;
• an estimation circuit, electrically coupled to the aggregation circuit, to generate a synchronization acquisition curve based on the temporal history;
• a summation circuit, electrically coupled to the comparison circuit and the estimation circuit, to sum the state-variable differences output by the comparison circuit with the synchronization acquisition curve;
• and
• a synchronization processing circuit, electrically coupled to the summation circuit, to determine the second clock signal based on the sum of the state-variable differences and the synchronization acquisition curve.

A method for synchronizing a first clock signal in a first timing domain and a second clock signal in a second timing domain, comprising:

• determining state-variable differences between the first clock signal and the second clock signal;
• collecting a temporal history of the state-variable differences between the first clock signal and the second clock signal;
• generating a synchronization acquisition curve based on the temporal history;
• summing the state-variable differences with the synchronization acquisition curve;
• and
• determining the second clock signal based on the sum of the state-variable differences and the synchronization acquisition curve.

A computer-program product for use in conjunction with a computer system, the computer-program product comprising a computer-readable storage medium and a computer-program mechanism embedded therein for configuring the computer system for synchronizing a first clock signal in a first timing domain and a second clock signal in a second timing domain, the computer-program mechanism including:

• instructions for determining state-variable differences between the first clock signal and the second clock signal;
• instructions for collecting a temporal history of the state-variable differences between the first clock signal and the second clock signal;
• instructions for generating a synchronization acquisition curve based on the temporal history;
• instructions for summing the state-variable differences with the synchronization acquisition curve;
• and
• instructions for determining the second clock signal based on the sum of the state-variable differences and the synchronization acquisition curve.

A computer system, comprising:

• a processor;
• memory;
• a program module, wherein the program module is stored in the memory and configured to be executed by the processor, the program module including instructions for synchronizing a first clock signal in a first timing domain and a second clock signal in a second timing domain, wherein the instructions include:
• instructions for determining state-variable differences between the first clock signal and the second clock signal;
• instructions for collecting a temporal history of the state-variable differences between the first clock signal and the second clock signal;
• instructions for generating a synchronization acquisition curve based on the temporal history;
• instructions for summing the state-variable differences with the synchronization acquisition curve;
• and
• instructions for determining the second clock signal based on the sum of the state-variable differences and the synchronization acquisition curve.