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The SQC 6100 is a Digital Terrestrial Receiver Device which is fully compliant with the standard
DVB-T (ETSI 300 744) standard for terrestrial
transmission systems.
The SQC 6100 integrates all analog and digital
data processing functions from the second intermediate frequency input to the transport stream
output.
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Applications
Features
■ Digital terrestrial TV sets
■ Fully compliant to DVB-T and
■ Digital terrestrial STB’s
■ Portable and mobile terrestrial
receivers
■
■
■
System Integration
■ Second intermediate frequency
■
■
■
■
■
■
■
■
input
DVB-compliant transport stream
output
Single free running oscillator
(nominal 28.9 MHz)
Four general purpose I/O’s,
including two PDM´s
I²C-bus interface
Two interrupt (IRQ) pins
3.3V power supply
TTL compatible I/O’s
P-MQFP-100 package
■
■
■
■
ETSI 300 744
2k/8k-COFDM
6, 7, 8 MHz channels
All code rates according to
DVB-T
All modulation schemes according to DVB-T
All guard interval lengths
according to DVB-T
BER measurements
On-chip FEC
■ Minimum external components
Technology
■ Internal anti-alias filter
■ On-chip AGC
■ On-chip ADC for 2K/8K COFDM
■ Digital demodulation and chan-
nel decoding
■ Entirely digital synchronisation
on chip
■ Based on Infineon mixed-signal
technology and embedded
DRAM technology
■ P-MQFP-100 package
Benefits
■ Fast acquisition and tracking
■
■
■
■
modes
Low implementation losses
Pre-echo tolerant
Time varying channel tolerant
Small outline
http://www.infineon.com
TPS
Channel Estimation
Interference Detection
2nd IF
Input
AAF
AGC
ADC
I/Q
conversion
Resampling
Equalizer
+ Soft Bit
Gen.
FFT
Symbol/ Bit
DeInterleaver
TS
Output
FEC
Carrier/Sampling Frequency and Timing Synchronisation
Clock, Reset
I²C
4 GPIOs
incl. 2 PDMs
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Processing Internals of the Single-Chip Terrestrial Receiver SQC 6100
A second intermediate frequency of 7.225 MHz typical is fed into the SQC
6100 Single-Chip Terrestrial Receiver. Unwanted spectral components are
suppressed by the internal anti-alias filter. The AGC ensures optimal use of
the analog-to-digital converter. The I/O conversion mixes the signal to the
baseband. A resampling unit fits the baseband signal to the sampling rate of
the FFT. Coarse estimation for positioning the guard interval is provided to
align the FFT window. Pilot carriers are used to fine tune the FFT. The TPS
unit retrieves the parameters for demodulation. Channel estimation is used
to interpolate in time and frequency dimensions. The interference detection
unit uses scattered pilots in parallel to detect co-channel interference such as
caused by analog TV. This unit corrects the data carriers and produces 4-bit
wide soft bits. Symbol and bit de-interleaver feeds the datastream into the
FEC. The datastream is accessible via transport stream output in serial and
parallel modes.
The entirely digital clock and timing concept are based on a free running oscillator. The status of the SQC 6100 can be monitored via the I²C-bus. Four
general purpose I/O’s are provided, including two pulse density modulators.
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The SQC 6100 device is available with complete documentation.
Please contact your local Infineon Technologies office for further details.
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How to reach us:
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Antenna
Tuner
SAW
Mixer
Demodulator
TUA 60xx
X6966
TDA 6190
SQC6100
Transport
Stream
Figure2.emf
An antenna receives the digital terrestrial signal. The tuner selects, filters,
and mixes the carrier (program) down to a first IF of 36.125 MHz typical. Adjacent channels are suppressed by SAW-filters. A second mixer shifts the
spectrum to the second IF. The SQC6100 provides analog filtering and digital
processing of the channel information. Output is the transport stream.
© Infineon Technologies AG i. Gr. 1999.
All Rights Reserved.
Please note that any information contained in this
publication may be subject to change. Infineon
Technologies reserves the right to make changes
to or to discontinue any product or service identified in this publication without notice.
Please contact our regional offices to receive the
latest version of the relevant information to verify,
before placing orders, that the information being
relied upon is current.
All brand or product names, hardware or software
names are trademarks of their respective companies or organizations.
Published by
Infineon Technologies AG i. Gr.
1999-06-21
Printed in Germany