Clock sending apparatus and method, and clock receiving apparatus and method

A method for receiving a clock, performed by a receiving side, the method comprising:

• receiving a clock signal sent by a sending side,
• wherein the clock signal is generated according to a first input clock from the sending side, and
• the clock signal carries at least a first frequency control word which is indicative of a relationship between a first sampling clock and a second sampling clock,
• the first sampling clock is determined by the first input clock according to a preset rule, and
• the second sampling clock is determined by the second input clock of the sending side according to a preset rule;
• determining the first input clock and the first frequency control word according to the clock signal;
• and
• determining the second input clock according to the first input clock and the first frequency control word;
• wherein determining of the second input clock according to the first input clock and the first frequency control word comprises:
• acquiring a first sampling clock according to a first input clock, and
• determining a plurality of first phase addresses according to the first sampling clock and a first frequency control word,
• wherein each of the plurality of first phase addresses is indicative of a phase of the second sampling clock;
• and
• determining the second sampling clock according to the plurality of first phase addresses, and determining the second input clock according to the second sampling clock.

A non-transitory computer-readable storage medium, storing a computer program, which when executed by a processor, causes the processor to carry out a method for sending a clock, performed by a sending side, the method comprising:

• inputting a first input clock and a second input clock;
• acquiring, a first sampling clock according to the first input clock, and
• a second sampling clock according to the second input clock, and
• determining a first frequency control word according to the first sampling clock and the second sampling clock,
• wherein the first frequency control word is indicative of the relationship between the first sampling clock and the second sampling clock;
• and
• generating a clock signal according to the first input clock, and sending the clock signal to a receiving side;
• wherein the clock signal carries at least the first frequency control word;
• and
• wherein sampling of the clock frequency of the first sampling clock and the clock frequency of the second sampling clock to determine the first frequency control word comprises:
• accumulating a clock edge of the first sampling clock;
• performing a decision on a clock edge of the second sampling clock, and accumulate the clock edge of the second sampling clock according to the decision of the clock edge;
• and
• determining a counted number of the clock edge of the second sampling clock in response to an accumulated value of the clock edge of the first sampling clock reaching a preset value, so as to generate the first frequency control word;
• or the computer program, when executed by a processor, causes the processor to carry out a method for receiving a clock, performed by a receiving side, the method comprising:
• receiving a clock signal sent by a sending side,
• wherein the clock signal is generated according to a first input clock from the sending side, and
• the clock signal carries at least a first frequency control word which is indicative of a relationship between a first sampling clock and a second sampling clock,
• the first sampling clock is determined by the first input clock according to a preset rule, and
• the second sampling clock is determined by the second input clock of the sending side according to a preset rule;
• determining the first input clock and the first frequency control word according to the clock signal;
• and
• determining the second input clock according to the first input clock and the first frequency control word;
• wherein determining of the second input clock according to the first input clock and the first frequency control word comprises:
• acquiring a first sampling clock according to a first input clock, and
• determining a plurality of first phase addresses according to the first sampling clock and a first frequency control word,
• wherein each of the plurality of first phase addresses is indicative of a phase of the second sampling clock;
• and
• determining the second sampling clock according to the plurality of first phase addresses, and determining the second input clock according to the second sampling clock.