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Japanese DBS systems require a transport stream multiplex frame (TSMF) layer to
carry digital signals over cable systems. When the recovered transport stream is a
multiplex frame, the STV0297E post-processes it to extract a single transport stream.
Automatic detection of the TSMF layer is provided. The chip integrates an analog-to-
digital converter that delivers the required performance to handle up to 256-QAM signals
in a direct IF sampling architecture, thus eliminating the need for external
downconversion.
7.2.
Features
Decodes ITU-T J.83-Annexes A/C and DVB-C bit streams
Processes Japanese transport stream multiplex frame (TSMF)
High-performance integrated A/D converter suitable for direct IF architecture in all
QAM (quadrature amplitude modulation) modes
Supports 16, 32, 64, 128 and 256 point constellations
Small footprint package: (10 x 10 mm²)
Very low power consumption
Full digital demodulation
Variable symbol rates
Front derotator for better low symbol rate performance and relaxed tuner
constraints
Integrated matched filtering
Robust integrated adaptive pre and post equalizer
On-chip FEC A/C with ability to bypass individual blocks
10 programmable GPIO
Two AGC outputs suitable for delayed AGC applications (sigma-delta outputs)
Integrated signal quality monitors, plus lock indicator and interrupt function
mapped to GPIO pin
Improved signal acquisition
System clock generated on-chip from quartz crystal
Low frequency crystal operations 4, 16, 25 - 30 MHz
4 I2C addresses
Easy control and monitoring via 2-wire fast I2C bus
7.3.
Absolute Maximum Ratings
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