Clock signal generation circuit, method for generating clock signal and electronic device

A method for generating a clock signal, comprising:

• generating, by an initial clock providing circuit, an initial clock signal having an initial frequency, and outputting the initial clock signal to a target clock generating circuit;
• detecting, by a control word providing circuit, a target parameter affecting a frequency offset of the initial frequency, determining a target frequency offset of the initial frequency based on the target parameter, generating a frequency control word based on the target frequency offset, and outputting the frequency control word to the target clock generating circuit;
• and
• generating, by the target clock generating circuit, a target clock signal having a target output frequency based on the frequency control word and the initial clock signal, wherein the target output frequency is negatively correlated with a value of the frequency control word and positively correlated with the initial frequency.

An electronic device, comprising a controlled circuit and a clock signal generation circuit, wherein

• the controlled circuit is connected to the clock signal generation circuit, and the controlled circuit is configured to operate in response to a target clock signal having a target output frequency output by the clock signal generation circuit;
• and
• the clock signal generation circuit comprises:
• an initial clock providing circuit, a control word providing circuit and a target clock generating circuit, wherein
• the initial clock providing circuit is connected to the target clock generating circuit, and the initial clock providing circuit is configured to:
• generate an initial clock signal having an initial frequency, and output the initial clock signal to the target clock generating circuit;
• the control word providing circuit is connected to the target clock generating circuit, and the control word providing circuit is configured to:
• detect a target parameter affecting a frequency offset of the initial frequency, determine a target frequency offset of the initial frequency based on the target parameter, generate a frequency control word based on the target frequency offset, and output the frequency control word to the target clock generating circuit;
• and
• the target clock generating circuit is configured to generate a target clock signal having a target output frequency based on the frequency control word and the initial clock signal, wherein the target output frequency is negatively correlated with a value of the frequency control word and positively correlated with the initial frequency.