Introducing High-Performance FM RDS Data Receiver

Introducing High-Performance
FM RDS Data Receiver ICs
March 2008
Silicon Labs Broadcast Audio Division
 Highly successful product family
 >100MU units shipped
 Broad portfolio of pending and
granted patents
 International presence and local
support in all major markets
 Rapidly expanding portfolio of
solutions targeting digital and
analog audio broadcast markets
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Broadcast Product Family
Industry leading performance and feature sets for
broadcast solutions based on unique RF capability
 Broadcast Audio Receivers and Transmitters
 Satellite Radio Tuner
 Satellite STB Receivers
Common Applications:
Cellular Handsets
Portable Media Players
and accessories
Navigation Devices
Set-Top Boxes
XM Satellite Radios
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RDS-TMC Navigation Proliferation
 Traffic Message Channel (TMC) system provides real-time
traffic information over FM RDS
 RDS-TMC is being bundled with GPS to provide real-time
traffic information to consumers
 Explosive growth in US and Europe in automotive telematics,
portable navigation devices (PNDs) and mobile GPS-enabled
devices
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c/o www.tmcforum.com
Introducing Si4706/49 RDS Data Receivers
 High-performance RDS receivers
provide industry-leading sensitivity
and reliability
 Results in higher confidence in the
traffic data received
 Advanced RDS processing and
decode techniques raise the
performance bar
 Digital low-IF architecture provides
unmatched flexibility
 Smallest, most highly integrated solutions for portable and
automotive markets
 Integrate the entire receiver from antenna input
to RDS output
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Addressing Both Automotive and Portable Markets
Si4749





Automotive companion tuner
AEC-Q100 qualified
Rapid AF tuning and qualification
Unmatched RDS performance
4 x 4 x 0.85 mm 24 pin QFN
Si4706



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
PND, mobile device RDS tuner
Unmatched RDS performance
Supports antenna-free enclosures
Stereo digital/analog audio out
3 x 3 x 0.55 mm 20 pin QFN
** Devices shown are illustrative of target market and do not imply design wins
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Higher Quality Data Received
Traditional RDS decoder
1
Traditional RDS decoder
pre-defined acceptance region
Greater amount of data rejected
 Higher block error rate
0
Si4706/49 RDS Decoder
1
0
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Si4706/49 RDS decoder extends
acceptance region using advanced
on-chip processing
Data is correctly interpreted
 Lower block error rate
High Performance Benefits End Users
Feature
Benefit
 Increased sensitivity in low signal
environments
 Receives better data, farther from RDS
transmitter during users’ commute
 More persistent RDS synchronization  Fewer dropped connections requiring
re-synchronization and data recovery
 Reduced RDS synchronization times
 Faster synchronization if lost in
variable signal environment
 Better data decode reliability
 More reliable data received
1
0
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Industry-Leading Sensitivity
Newest competition
(15 µVemf)
Market-leading
Si4703-B17
(12 µVemf)
Si4706/49
(8 µVemf)
 The industry’s best
RDS sensitivity
 Si4706 and Si4749
receive data farther
from transmitter
 Si4706/49 sensitivity is
8 µVemf at 5% BLER
 Nearly 2x better than
competition
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Fastest RDS Synchronization Time
Si4706/49 RF Level vs. RDS Synctime
500
Synctime (ms)
400
300
200
Consistent performance <100ms
100
0
0
10
20
30
40
50
60
RF Level (dBuVemf)
RDS deviation = 2kHz
 Rapid synchronization in weak and varying signal level environments
 Quicker synchronization with transmitter if signal is lost
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Superior RDS Synch Persistence
 Si4706/49 RDS synchronization persistence is 2x
improvement over market-leader
 Si4706/49 maintain synch to 4uV EMF @ 70% BLER
 Si4703-B17 maintains synch to 8uV EMF @ 30% BLER
 Si4706/49 does not lose synchronization in illustration
uV EMF
 RDS data is immediately received upon improved SNR conditions
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Excellent Decoder Reliability
 Decoder reduces incorrect/undecipherable RDS data
 Improves TMC and RDS song meta data integrity
 More accurate information leads to better user experience
RF Level vs. Decoder Error Rate (DER)
100
DER (%)
10
1
10
12
14
16
18
20
22
24
0.1
Si4706/49
Si4703-B17
0.01
RF Level (dBuV EMF)
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Si4706/49 Unmatched Programmability
Feature
Benefit
 Interrupts on change in  RDS block A almost never changes and block B
block A and / or block B
changes with programming content. Interrupts likely
indicate change or similarity in broadcaster or content
 Full granularity with all
blocks and BLER
 Allows host processor to post-process if user desires
 User can also select interrupts by BLER level,
conserving host processor cycles
 Interrupts by blockspecific BLER
 Allows error-thresholds, content-specific or
application-specific interrupts to save host power
 On-chip buffer up to 25
RDS groups with
associated BLER by
block (100 blocks)
 Reduces interrupts and therefore power consumption
load of host processor
 Especially useful in decoding ODA information with
large groups of data
 Greater than 50 times more data than competition
provides
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Summary
 Advanced RDS decode engine offers industry-leading
performance, directly benefiting end-users
 Digital low-IF architecture proven industry-wide as mature,
reliable, proven
 High integration and simple programming make adding
companion / data receiver easy and cost-effective
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www.silabs.com/broadcast