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.

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

I²C

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

I²C

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

I²C

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

I²C

repeater

CLK

to all registers

AGC1

AGC2

SCL

SDA

SCLT SDAT

XTAL

Output stream

Vin +

Vin -

DEMODULATOR

FEC