NEAR-FIELD COMMUNICATION CHIP, PHASE SYNCHRONIZATION METHOD, AND ELECTRONIC DEVICE

The present disclosure relates to the field of communication technologies, and provide a near-field communication (NFC) chip, a phase synchronization method, and an electronic device, to quickly synchronize a transmitted signal of an NFC card device with a carrier of an NFC card reader. The NFC chip includes a processing circuit configured to: determine a first carrier frequency offset between a local clock signal and a carrier clock signal, and generate a first frequency control word based on the first carrier frequency offset. The carrier clock signal is determined based on a received signal received by the NFC chip. The NFC chip further includes a phase-locked loop configured to generate a first clock signal based on the local clock signal and the first frequency control word. The NFC chip also includes a phase alignment circuit configured to perform phase selection on the first clock signal based on the carrier clock signal to obtain a second clock signal, and send the second clock signal to a transmitter circuit.