DATA BRIEF
March 2004
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STV0297J
Universal digital cable demodulator
Description
The STV0297J is a highly integrated device,
compliant with DVB-C/ITUJ83-A/B/C.
It provides a small footprint, low-power solution
enabling it to be easily integrated into broadcast
and interactive set-top boxes and network inteface
modules.
Furthermore, the STV0297J is the first QAM
demodulator with the integrated support for
transport stream multiplex frame required for
Japanese cable set-top boxes.
Application:
Advanced solution for very low-cost broadcast and interactive cable set-top boxes
ADC
Trellis decoder
De-randomiser
De-interleaver
RS FEC decoder
MPEG sync
TSMF function
Output
formatter
Bit error
rate
tester
Shared RAM
WBAGC
&
delayed AGC
IC
interface
Symbol
timing
recovery
Carrier
recovery
Clock
generation
Lock status
&
IRQ generator
Quadrature
demodulation
Nyquist filtering AGC Derotator
Channel
equaliser
FEC B
FEC A/C
Signal
quality
estimator
IC
repeater
CLK
to all registers
AGC1
AGC2
SCL
SDA
SCLT SDAT
XTAL
Output stream
Vin +
Vin -
DEMODULATOR
FEC
ADC
Trellis decoder
De-randomiser
De-interleaver
RS FEC decoder
MPEG sync
TSMF function
Output
formatter
Bit error
rate
tester
Shared RAM
WBAGC
&
delayed AGC
IC
interface
Symbol
timing
recovery
Carrier
recovery
Clock
generation
Lock status
&
IRQ generator
Quadrature
demodulation
Nyquist filtering AGC Derotator
Channel
equaliser
FEC B
FEC A/C
Signal
quality
estimator
IC
repeater
CLK
to all registers
AGC1
AGC2
SCL
SDA
SCLT SDAT
XTAL
Output stream
Vin +
Vin -
DEMODULATOR
FEC
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STV0297J
Features
Integrated high performance ADC
Support for 4-, 16-, 32-, 64-, 128-, 256-point constellation variable symbol
Rate from 0.87 MBaud to 11.7 MBaud
Robust integrated adaptative equaliser
IC serial bus and IC repeater
DVB common parallel interface-compliant serial and parallel data output
Lock time <100ms
Low power consumption <0.5W typ.
TQFP 64 10x10 package
Ordering information
Device number
Description
STV0297J
QAM FEC A/B/C
STV0297JT
QAM FEC A/B/C with tape and reel
STV0297J-TMM
Development platform
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences
of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted
by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject
to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not
authorized for use as critical components in life support devices or systems without the express written approval of STMicroelectronics.
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STMicroelectronics Group of Companies
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