Digital Radio Receiver Copyright © 2015 by Silicon Laboratories 3.3.2015
Peak
Detect
Power
Supply
I2C / SPI
Host Interface
FLASH
Interface
Si4622
HD Radio
Demod/
Decoder
FM RDS/
RBDS
ADC
ADC
PGA
PGA
Peak
Detect
Mixer
Peak
Detect
VHF
LNA
RFREF
NVSCLK
NVSSB
NVMOSI
NVMISO
SCLK
SSB
MISO
MOSI
INTB
RSTB
GPIOx
VHFI
PLL/
CLK
XTALI
XTALO
VCO
VIO
VA
VCORE
VMEM
VHF
Front-End
Control
VHFSW
Si4622-A10
High-Performance, Single-Chip FM HD-Radio™/RDS/RBDS
Data Receiver
Description
The Si4622 single-chip digital receiver is a 100% CMOS
digital radio broadcast receiver IC from Silicon Labs. It
provides significant advances in size, power consumption,
and performance to enable HD Radio data services
reception in automotive infotainment systems and car
radios.
The Si4622 HD Radio data receiver offers a complete and
cost-effective solution to support HD Radio data services
reception by integrating a multiband RF tuner,
demodulator, and channel decoder on a single die. The
high level of integration and complete system production
test simplifies design-in, increases system quality, and
improves reliability and manufacturability.
The Si4622 also supports worldwide FM radio reception
and incorporates a fully-integrated decoder for the
European Radio Data System (RDS) and the North
American Radio Broadcast Data System (RDBS), including
all required symbol decoding, block synchronization, error
detection, and error correction functions.
Leveraging Silicon Laboratories' proven and patented
digital low-intermediate-frequency (Low-IF) receiver
architecture, the Si4622 delivers superior RF performance
and interference rejection. The solution offers dynamic FM
channel bandwidth control, auto-calibrated digital tuning,
and proven FM seek functionality based on multiple signal
quality and band parameters. In addition, the Si4622
provides an integrated clock oscillator or accepts a
reference clock and supports a selectable control interface
(SPI or I
2
C). The Si4622 receiver system specifies a
minimal bill of materials and requires less than 100 mm
2
of
PCB space, excluding the antenna inputs, making the
solution ideal for today's infotainment systems.
Features
- Worldwide FM band support (76–108 MHz)
- Advanced RDS / RBDS decoder
- FM HD Radio channel decoder
- Advanced seek functionality
- Complete on-chip channel decode
- Station Information Service (SIS) and Program Service
Data (PSD) support
- Advanced Application Services (AAS) Payload for data
applications
- Full range of analog and digital signal quality metrics
- Fully-integrated VCO/PLL synthesizer
- Fully-integrated advanced AGC and alignment
- SPI, I
2
C control interfaces
- No external RAM required for channel decoding
- Flash memory interface for application program load
- 7x7 mm 48-pin QFN package
- Pb-free/RoHS compliant
- AEC-Q100 qualified
Applications
- OEM automotive infotainment systems
- Aftermarket car radio systems
- OEM automotive PND docking systems
