General description
The TEF6621 is an AM/FM radio including Phase-Locked Loop (PLL) tuning system. The system is designed in such a way, that it can be used as a world-wide tuner covering common FM and AM bands for radio reception. All functions are controlled by the I2C-bus. Besides the basic feature set it provides a good weak signal processing function.

FEATUREs
● FM tuner for Japan, Europe and US reception
● AM tuner for Long Wave (LW) and Medium Wave (MW) reception
● Integrated AM Radio Frequency (RF) selectivity
● Integrated PLL tuning system; controlled via I2C-bus
● Fully integrated Local Oscillator (LO)
● No alignment needed
● Very easy application on the main board
● No critical RF components
● Fully integrated Intermediate Frequency (IF) filters and FM stereo decoder
● Fully integrated FM noise blanker
● Field strength (LEVEL), multipath [Wideband AM (WAM)] and noise [UltraSonic Noise (USN)] dependent stereo blend
● Field strength (LEVEL), multipath (WAM) and noise (USN) dependent High-Cut Control (HCC)
● Field strength (LEVEL), multipath (WAM) and noise (USN) dependent soft mute
● Single power supply