Description

DTV Demodulator IC

Te l

408.523.6500

Fax

408.523.6501

www.zoran.com

Product Brief

Zoran Corporation

1390 Kifer Road

Sunnyvale, CA 94086-5305

11/05 IN

CAS-220

DVD

Digital Camera

Digital TV

Imaging

IP Core

Driving the Digital Lifestyle

Driving the Digital Lifestyle

The Cascade2 is a multistandard demodulator and decoder for

terrestrial and cable TV reception. It is designed to support 8/16-VSB

in compliance with the ATSC Digital Television Standard as well as

OpenCable ITU-T J.83B in compliant 256/64 QAM and OOB QPSK

modes for Digital Cable Ready downstream reception.

The Cascade2 is designed to reduce system costs by integrating the

FAT channel demodulation of VSB, J.83 Annex B QAM and Audio

decoding (for analog channels) and the FDC QPSK channel

demodulation.

The small, high-performance Cascade2 is well suited for any system

designed to receive off-air and cable digital TV transmissions. This

includes stand-alone SDTV or HDTV sets, Set-Top Boxes, PC-TV

cards and data reception appliances.

The Cascade2 family ICs are produced in several combinations of

reception standards:

Cascade2 P/N

Decscription

ATSC

QAM

Annex B

OOB

FDC

US

Audio

BTSC

Korea

Audio

A2FM

FM

Radio

Smart

Antenna

CAS-220

VSB

•

•

CAS-220/C

VSB, QAM

•

•

•

CAS-220/S

VSB, BTSC

•

•

•

•

•

CAS-220/CS

VSB, QAM, BTSC

•

•

•

•

•

•

CAS-220/CO

VSB, QAM, OOB

•

•

•

•

CAS-220/CSO

VSB, QAM, BTSC,OOB

•

•

•

•

•

•

•

System Block Diagram

Cascade2

25MHz

MPEG 2TS

Host I2C

I2S

Data

Audio

IF AGC PWM

LPF

BPF

SAW filter

and IF AGC

Tuner

NTSC

demod

IF

44MHz

ADC

ADC

2nd IF Sound (4.5 MHz)

Tuner I2C

SIF (Option)

FM IF (Option)

CVBS

Cascade2 front end system solution without OOB

Mixer

OOB tuner

FDC IF Input

Local

Oscillator

25MHz

VSB

SAW

Tuner I2C

FAT IF

Input

BTSC 4.5 MHz

CVBS

Tuner

Antenna

Spliter

54-860MHz

LNA

Cable

In/Out

BPF

IF

44MHz

BPF

70-130

MHz

Cascade2

FAT - Forward App Transport

Cascade2 front end system solution with OOB

AGC

Serial MPEG2 Transport

10-bit

ADC

FAT AGC

IF Input

SIF Input

FDC AGC

Programmable Digital Filters

and other

DSP Blocks

Firmware

RAM

FEC

Parallel MPEG2 TS Out

10-bit

ADC

FDC QPSK

Demodulator

Sound

Decoder

FDC IF In

LO

FDC LO

ADC

AGC

DSP

Parallel MPEG2 TS In

Host IIC

General Purpose I/O Pins

IIS Output

FDC data Out

MPEG2 Mux and

Serializer

Mux

Switch

Tuner IIC

Main

PLL

Osc

CLK0

Internal

Clocks