TIME SYNCHRONIZATION DEVICE, ELECTRONIC DEVICE, TIME SYNCHRONIZATION SYSTEM AND TIME SYNCHRONIZATION METHOD

摘要

Disclosed are a time synchronization device (1000) for an electronic device, an electronic device (50), a time synchronization system (60) and a time synchronization method. The time synchronization device (1000) comprises: a signal generation circuit (100) and a time adjustment circuit (150). The signal generation circuit (100) includes: a control circuit (11) configured to generate a frequency control word (F); and a signal conditioning circuit (12) configured to receive an input signal having an original frequency and the frequency control word (F), and to generate and output, according to the frequency control word (F) and the input signal, an output signal having a target frequency. The time adjustment circuit (150) is configured to perform synchronization regulation on a clock signal of the electronic device on the basis of the output signal having the target frequency. The time synchronization device (1000) can synthesize, by means of the signal generation circuit (100), an output signal having a sufficiently large frequency; a frequency granularity of the output signal is high, so that the electronic device obtains a more precise synchronous clock, and the working coordination and consistency of the electronic device in a network system is better.