Si47920/21 Copyright © 2015 by Silicon Laboratories 3.12.2015

ARM Cortex M3

IF AGC

XTALIXTALO

CLKO

ICP

ICN

LNA

FMI

FMO

LNA

AGCAMI

AMVAG

DCLK0DFS0

DOUT0

INTB

RSTB

NVSCLK

NVSSBNVM

OSI

NVMISO

MISO

/A0

MO

SI/SDASC

LK/SCLSSB/A

1

SMO

DE

SPI/I2CFlash

Interface

VDVAVIO2

VIO1

Power supplies

7:4 Mux

AIN

0P A

IN0N

AIN1P

AIN

1N

AIN2P

AIN2N

AIN3P

AIN3N

AIN4P

AIN4N

AIN

5PA

IN5N

AIN6N

AIN6P

AO

UT3

AO

UT2

AO

UT1

AOUT

0

DIC

LK2

DIF

S2

DIN

2

DIC

LK1

DIF

S1

DIN

1

DIC

LK0

DIF

S0

DIN

0

ADC

ADC

ADC

ADC

AudioInputPort 2

AudioInputPort 1

AudioInputPort 0

AudioOutputPort 0

Program RAM

Data RAM

DEBUGPDEBUGN

ISFSPISFSN

ZIFIOUT

ZIFCLK

ZIFQOUT

ZIFFS

DAC

DAC

DAC

DAC

GP2

GP1

GP0

Radio DSP

ADC

ADC

DCLK1DFS1

DOUT1AudioOutputPort 1

Audio HUB + Audio DSP(Hi-Fi2 EP)

AGC

AO

UT5

AOUT

4

DAC

REF

DAC

DAC

Si47920/21High-Performance Automotive AM/FM Radio Receiver and

HD Radio™ Tuner with Audio SystemFeatures- 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)- On-chip soft-decision RDS/RDBS demodulator/decoder- AM/FM:

- Comprehensive AM/FM signal processing firmware- Integrated active FM buffer for background/data

tuners- Analog FM phase diversity with two, three or four

tuners (Si47921 Only)- Fully integrated AGC for AM and FM inputs

- HD Radio (Si47921 Only):- Digital I/Q interface to HD Radio Processor- AM/FM HD Radio IBOC blend- Fast FM HD Radio band scan

- Audio:- HiFi2-EP Audio-DSP with 288 kB for program and

data memory- Seven analog audio inputs- Four analog audio outputs- Five digital audio ports (I2S)- Up to 24 synchronous or asynchronous sample

rate converters- Multi-channel audio reference- design

- Frequency synthesizer with fully- integrated PLL-VCO- Integrated clock oscillator- 1.8 V or 3.3 V digital power supply- 3.3 V analog and 1.8 V digital- power supplies- QFN 84-pin, 12x12x0.85 mm- Pb-free/RoHS compliant- AEC-Q100 qualified

DescriptionThe Si47920/21 integrates AM/FM radio receiver with audio processing. The analog AM/FM receiver sets a new standard for automotive broadcast reception. The integrated audio processing sub-system enables to synchronize, process, aggregate and distribute all digital and analog audio signals in the head-unit.

The Si47920/21 is the most integrated monolithic IC in the industry with the smallest external bill of materials. Si47920/21 based systems can scale from low-cost single tuner AM/FM radio to highest performance systems with multiple tuners and multiple antennas, enabling the radio suppliers to reuse their R&D across multiple product lines, all with a common software API. The Si47920/21 meets rigorous automotive quality standards.

Applications- Automotive OEM infotainment systems- Aftermarket car radio systems

Si47920/21 Copyright © 2015 by Silicon Laboratories 3.12.2015

Pin Assignments Package Information

ZIFFS48

ZIFQOUT49

ZIFCLK50

ZIFIOUT51

ISFSN52

ISFSP53

DEBUGN54

NC 8

DACREF 7

XTALI 6

XTALO 5

CLKO 4

AOUT5 3

AOUT4 2

AOUT3 1

FMI 10

NC 9f

AIN

6P3

1

AIN

2P2

3

AIN

2N2

4

AIN

3P2

5

AIN

3N2

6

AIN

4P2

7

AIN

4N2

8

AIN

5P2

9

AO

UT

284

AO

UT

183

AO

UT

082

ICP

81

ICN

80

DIF

S0

79

DIC

LK

078

DIN

077

GP

076

GP

275

VD45

DBYP46

GP

174

DIN

173

SSB/A143

VIO144

AIN

6N3

2

RS

TB

33

AMI 12

NC 11

f

VIO247ABYP 17

NC 16

NC 15

FMO 14

AMVAG 13

AIN0P 19

VA 18f

AIN1P 21

AIN0N 20

AIN

1N2

2

AIN

5N3

0

MIS

O/A

04

0

SM

OD

E3

4

NV

MIS

O3

5

NV

MO

SI

36

NV

SS

B3

7

NV

SC

LK

38

MO

SI/S

DA

41

SC

LK

/SC

L4

2

INT

B3

9

DOUT158

DFS059

DCLK060

DOUT061

NC62

NC63

DEBUGP55

DFS156

DCLK157

DIC

LK

172

DIF

S1

71

DIN

270

DIC

LK

269

DIF

S2

68

NC

67

NC

66

NC

65

NC

64

Dimensions Min Nom Max

A 0.80 0.85 0.90

A1 0.00 0.03 0.05

b 0.20 0.25 0.30

D 12.00 BSC.

D2 5.40 5.50 5.60

e 0.50 BSC.

E 12.00 BSC.

E2 5.40 5.50 5.60

L 0.35 0.40 0.45

R 0.075 — —

S — — 0.075

aaa — — 0.10

bbb — — 0.10

ccc — — 0.08

ddd — — 0.10

Notes:1. All dimensions shown are in millimeters (mm)

unless otherwise noted.2. Dimensioning and Tolerancing per ANSI

Y14.5M-1994.3. This drawing conforms to JEDEC outline

MO-220, Variation VJJD-24. Recommended card reflow profile is per the

JEDEC/IPC J-STD-020 specification for Small Body Components.

 

Si47920/21 High-Performance Automotive AM/FM Radio Receiver and

HD Radio™ Tuner with Audio System

DisclaimerSilicon Laboratories intends to provide customers with the latest, accurate, and in-depth documentation of all peripherals and modules available for system and software implementers using or intending to use the Silicon Laboratories products. Characterization data, available modules and peripherals, memory sizes and memory addresses refer to each specific device, and "Typical" parameters provided can and do vary in different applications. Application examples described herein are for illustrative purposes only. Silicon Laboratories reserves the right to make changes without further notice and limitation to product information, specifications, and descriptions herein, and does not give warranties as to the accuracy or completeness of the included information. Silicon Laboratories shall have no liability for the consequences of use of the information supplied herein. This document does not imply or express copyright licenses granted hereunder to design or fabricate any integrated circuits. The products must not be used within any Life Support System without the specific written consent of Silicon Laboratories. A "Life Support System" is any product or system intended to support or sustain life and/or health, which, if it fails, can be reasonably expected to result in significant personal injury or death. Silicon Laboratories products are generally not intended for military applications. Silicon Laboratories products shall under no circumstances be used in weapons of mass destruction including (but not limited to) nuclear, biological or chemical weapons, or missiles capable of delivering such weapons.

Trademark InformationSilicon Laboratories Inc., Silicon Laboratories, Silicon Labs, SiLabs and the Silicon Labs logo, CMEMS®, EFM, EFM32, EFR, Energy Micro, Energy Micro logo and combinations thereof, "the world’s most energy friendly microcontrollers", Ember®, EZLink®, EZMac®, EZRadio®, EZRadioPRO®, DSPLL®, ISOmodem ®, Precision32®, ProSLIC®, SiPHY®, USBXpress® and others are trademarks or registered trademarks of Silicon Laboratories Inc. ARM, CORTEX, Cortex-M3 and THUMB are trademarks or registered trademarks of ARM Holdings. Keil is a registered trademark of ARM Limited. All other products or brand names mentioned herein are trademarks of their respective holders.

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