Si4700-B15 Overview
USB FM radio PDAs Notebook PCs Car audio/RDS Media players Consumer electronics The Si4700/01 integrates the plete tuner function from antenna input to stereo audio output for FM broadcast radio reception. Functional Block Diagram Ordering Information: See page 34. Pin Assignments (Top View) VIO Headphone Cable FMIP FMIN LNA Si4700/01 I ADC DSP DAC LOUT PGA FILTER DEMOD Q ADC MPX AUDIO DAC ROUT 32.768 kHz RCLK AGC TUNE 2.7 - 5.5 V VA VD REG 0 / 90 AFC LOW-IF GPIO RSSI CONTROL INTERFACE GPIO VIO RST SDIO SCLK SEN CONTROLLER AMPLIFIER Patents pending Notes: 1. To ensure proper operation and FM
Si4700-B15 Key Features
- This data sheet applies to Si4700 Silicon Revision B, Firmware 15 and greater
- Worldwide FM band support (76-108 MHz)
- Digital low-IF receiver
- Frequency synthesizer with integrated VCO
- Seek tuning
- Automatic frequency control (AFC)
- Automatic gain control (AGC)
- Excellent overload immunity
- Signal strength measurement
- Programmable de-emphasis (50/75 µs)