Clock source, method for distributing a clock signal and integrated circuit

An integrated circuit, comprising:

• at least one distributed clock signal generator according to one of the for providing a primary clock signal and at least one secondary clock signal, the distributed clock signal generator comprising:
• a primary oscillator configured to generate a primary clock signal based on a reference control signal;
• at least one secondary oscillator wherein each secondary oscillator being configured to generate a secondary clock signal based on the reference control signal;
• wherein for each secondary oscillator a frequency correction unit is provided and configured such to adjust the reference control signal for the associated secondary oscillator based on the primary clock signal and the secondary clock signal of the associated secondary oscillator such that the clock frequency of the secondary clock signal of the associated secondary oscillator essentially equals the clock frequency of the primary clock signal;
• at least one primary logic unit which is supplied with the primary clock signal;
• at least one secondary logic unit which is supplied with one of the secondary clock signals.

A method for distributing a clock signal for integrated circuits, comprising:

• providing a primary oscillator and a at least one secondary oscillator;
• generating by the primary oscillator a primary clock signal based on a reference control signal;
• generating by the at least one secondary oscillator a secondary clock signal based on the reference control signal;
• increasing or decreasing the reference control signal of the at least one secondary oscillator based on a difference of the primary clock signal and the secondary clock signal of the respective secondary oscillator such that the clock frequency of the respective secondary clock signal essentially equals the clock frequency of the primary clock signal.