STV0297E

STV0297E概述

QAM解调器IC,具有A / D转换器 QAM demodulator IC with A/D converter

Description

The is a complete single-chip QAM quadrature amplitude modulation demodulation and FEC forward error correction solution that performs sampled IF to transport stream MPEG-2 or MPEG-4 block processing of QAM signals. It is intended for the digital transmission of compressed television, sound, and data services over cable.

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

■ Additional I2C bus I2C repeater dedicated to tuner control for minimum tuner disturbance

■ Programmable clock derived from system clock and available for external use

■ Parallel and serial output interfaces, with DVB common interface support

■ On chip voltage regulator

■ CMOS technology, 1.0 V operation

Applications

■ Japan, Europe, Asia cable set-top boxes

■ Cable modems

■ Cable ready TV

■ Cable PC card

■ Cable network module

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