Si4797x Automotive Dual Receivers with Audio DSP Subsystem

• Dual Worldwide FM band support (64–108 MHz)
• Worldwide AM band support (520–1710 kHz)
• LW band support (144–288 kHz)SW band support (2.3–30 MHz)
• Dual DAB/DAB+/DMB support (170–240 MHz) (Si47972 only)
• NOAA Weather Band support
• On-chip soft-decision RDS/RDBS demodulator/decoder
  
• Frequency synthesizer with fully integrated PLL-VCO
• Integrated clock oscillator
• 1.8 V or 3.3 V digital IO power supplies
• 3.3 V analog power supply and 1.8 V digital power supply
• QFN 88-pin, 12x12x0.85 mm
• Pb-free/RoHS compliant
  
• AEQ-Q100 qualified
  

AM/FM

• Comprehensive AM/FM signal processing firmware
• Integrated active AM/FM buffers for background/data tuners
• Analog FM phase diversity with two, three or four tuners
• Fully integrated AGC for AM and FM inputs

DAB/DAB+/DMB (Si47972 only)

• Digital I/Q interface to DAB/DAB+/DMB processor
• DAB/DAB+/DMB MRC 
• Integrated active Band III buffer and Band III input for background/data tuners
• Fast DAB/DAB+/DMB band scan
• Fully integrated AGC for active Band III buffer and Band III input

HD Radio

• Digital I/Q interface to HD Radio Processor
• HD Radio MRC
• Fast FM HD Radio band scan

Audio

• Tensilica HiFi EP audio DSP with 512 kB for program and data memory
• Six analog audio inputs
• Six analog audio outputs
• Seven digital audio ports (I2S) with TDM support
• Up to 24 synchronous or asynchronous sample rate converters