Cascade2
™
DTV Demodulator IC
DVD
Digital Camera
Driving the Digital Lifestyle
Digital TV
Imaging
IP Core
Product Brief
Description
Zoran Corporation
1390 Kifer Road
Sunnyvale, CA 94086-5305
Te l 408.523.6500
Fax 408.523.6501
www.zoran.com
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
CAS-220
CAS-220/C
CAS-220/S
CAS-220/CS
CAS-220/CO
CAS-220/CSO
VSB
Decscription
ATSC
QAM
Annex B
OOB
FDC
US
Audio
BTSC
Korea
Audio
A2FM
FM
Radio
Smart
Antenna
VSB, QAM
VSB, BTSC
VSB, QAM, BTSC
VSB, QAM, OOB
VSB, QAM, BTSC,OOB
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FEC
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System Block Diagram
IF Input
Mux
SIF Input
10-bit
ADC
Programmable Digital Filters
and other
DSP Blocks
Parallel MPEG2 TS Out
FAT AGC
AGC
MPEG2 Mux and
Serializer
Serial MPEG2 Transport
Parallel MPEG2 TS In
CLK0
Osc
Main
PLL
Sound
Decoder
DSP
General Purpose I/O Pins
Internal
Clocks
FDC LO
LO
Firmware
RAM
IIS Output
FDC AGC
AGC
FDC IF In
ADC
FDC QPSK
Demodulator
FDC data Out
Tuner IIC
Switch
Host IIC
Cascade2 front end system solution without OOB
25MHz
Cascade2 front end system solution with OOB
FAT - Forward App Transport
CVBS
Antenna
BTSC 4.5 MHz
54-860MHz
LNA
Spliter
Tuner
IF
44MHz
VSB
SAW
Tuner I2C
Cascade2
IF
Tuner
44MHz
SAW filter
and IF AGC
BPF
IF AGC PWM
LPF
NTSC
demod
2nd IF Sound (4.5 MHz)
ADC
Tuner I2C
Audio
I2S
Host I2C
ADC
Data
MPEG 2TS
Cable
In/Out
BPF
70-130
MHz
FAT IF
Input
Cascade2
FDC IF Input
Mixer
BPF
Local
Oscillator
25MHz
SIF (Option)
FM IF (Option)
CVBS
OOB tuner
11/05 IN
CAS-220
Cascade2
™
DTV Demodulator IC
Driving the Digital Lifestyle
Product Brief
Key Features
Modulation Flexibility
- ATSC 8-VSB demodulation
- OpenCable, ANSI/SCTE DVS-031, ITU-T J.83 Annex B and
DOCSIS compliant 64/256 QAM demodulation
- OOB downstream demodulation, complies with SCTE DVS-178
and DVS-167 specifications
- Audio stereo decoding: US BTSC audio mono, stereo and SAP
decoding (DBX), Korea A2 FM mono, stereo and bilingual,
with IIS output
- Autonomous operation - Internal DSP firmware execution eliminates
the need for supervision and operation by the system host
Excellent VSB Performance
- Superior 8-VSB multi-path performance with equalizer coverage
of –34us to +78us.
- Superior VSB indoor reception using enhanced equalization and
synchronization algorithms, based on training signal and data-aided
equalization, enables Brazil and other 0dB ghosts reception
- Adaptive control loops according to channel conditions for fast
channel acquisition and optimal tracking
- Excellent doppler ghosts rejection
- Fast channel auto search by carrier lock of +/-400KHz and NTSC
channel detection
Excellent QAM Performance
- ANSI/SCTE DVS-031, ITU-T J.83 Annex B 64/256QAM,
5.059641/5.360537MHz symbol rate.
- Integrated 32Kbytes deinterleaver RAM for DI modes
up to I=128 J=4.
- 84 taps equalization range: 36 FFE and 48 DFE for superior
cable micro-reflection rejection
- Superior phase noise rejection
- Superior burst noise and combined distortion rejection
- Superior AM noise rejection
- Fast channel auto search based on auto 64/256QAM detection and
wide carrier acquisition range of +/-500KHz
FDC Demodulator (OOB)
- OpenCable SCTE DVS-178 & 167 QPSK demodulation
- 8 taps adaptive equalizer
- On-chip frequency synthesizer provides LO for FDC
down-conversion
- Direct Cable Card interface compliant with SCTE 28 2001
(DVS-295)
Sound stereo decoder
- US BTSC mono, stereo and SAP (DBX) decoding
- Korea A2 FM mono, stereo and bilingual decoding
- FM radio stereo decoding
- IIS server/client with output clock of 48KHz, 44.1KHz, and 32KHz
Advanced System Functions
- Accepts 44MHz or low-IF from the tuner eliminating external
base-band demodulation
- Separate RF and IF AGC PWM outputs
- Parallel and serial MPEG2 transport outputs
- All digital recovery loops
- Firmware loading IIC serial bus from host upon initialization
- Integrated IIC switch for isolation of the tuner IIC port during
normal reception modes
- Via IIC, the Cascade2 reports FEC statistics, receiver status,
and channel data such as S/N ratio, equalizer taps, carrier offset,
and more
- EIA/CEA-909 Mode A Smart Antenna Interface
- Internal mux for serial output of decrypted TS from POD
Standard 14x14 mm 100pin LQFP package
For more information, contact Zoran's Sunnyvale office or the office nearest you:
Shanghai, China
Zoran China Office
Tel: 86-21-6469-9799
Fax: 86-21-6427-0545
Shenzhen, China
Zoran China Office
Tel: 86-755-8281-5777
Fax: 86-755-8322-0889
Hong Kong
Zoran Asia Pacific Ltd.
Tel: +852-2620-5838
Fax: +852-2620-5238
Israel
Zoran Microelectronics Ltd.
Te l : +972-4-8545-777
Fax: +972-4-8551-550
Japan
Zoran Japan Office
Te l : +81-3-5475-1051
Fax: +81-3-5475-1053
Korea
Zoran Korea Office
Tel: +82-2-761-7471
Fax: +82-2-761-7472
Taiwan
Zoran Taiwan Office
Te l : +886-2-2659-9797
Fax: +886-2-2659-9595
© Copyright 2005 Zoran Corporation. All rights reserved. Zoran, the Zoran logo, and Cascade are trademarks of Zoran Corporation. All other brand product names and company names are trademarks of their respective
owners. The information in this document is believed to be reliable. However, Zoran Corporation makes no guarantee or warranty concerning the accuracy of said information and shall not be responsible for any loss or
damage of whatever nature resulting from the use of, or reliance upon it. Zoran Corporation does not guarantee that the use of any information contained herein will not infringe upon patent, trademark, copyright, or rights
of third parties. Zoran Corporation reserves the right to make changes in the product and/or specifications, or both, presented in this publication at any time without notice.
11/05 IN
CAS-220
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