Parameter determination method and device for spread spectrum circuit, and clock spread spectrum method and device

A parameter determination device for a spread spectrum circuit, comprising:

• a memory, configured to store computer readable instructions;
• and
• a processor, configured to execute the computer readable instructions,
• wherein when the computer readable instructions are executed by the processor, the processor performs;
• obtaining a base time unit and a target frequency;
• determining a spread spectrum depth coefficient according to the base time unit and the target frequency;
• determining whether the spread spectrum depth coefficient is greater than or equal to a base spread spectrum depth coefficient;
• adjusting the base time unit until a corresponding spread spectrum depth coefficient corresponding to the base time unit is greater than or equal to the base spread spectrum depth coefficient in a case where the spread spectrum depth coefficient is smaller than the base spread spectrum depth coefficient;
• and
• determining the spread spectrum depth coefficient as a standard spread spectrum depth coefficient and determining a standard frequency control word according to the standard spread spectrum depth coefficient in a case where the spread spectrum depth coefficient is greater than or equal to the base spread spectrum depth coefficient.