Abstract:

The design method of infrared remote digital FM receiver is introduced in this article.The core of the system is the microcontroller avr48v10au,which constitutes the FM digital radio system together with a digital radio module Si4702.It writes programs into the chip Si4702 and PT2315 from microcontroller to set the parameters like radio receiver frequency,working mode,volume and so on.The receiving frequency range of this circuit is from 87.5 to 108 MHz,capable of receiving 10 to 12 stations.The system is highly applicable with its high precision,good anti-interference performance and stability.

Key words: infrared remote;FM receiver;MCU avr48v10au;digital radio module;programming