D i s t i n g u i s h i n g F e a t u r e s

ˇ QPSK/BPSK demodulation

ˇ DVB/DSS compliant

ˇ Symbol rates: 1 to 45 Msps

ˇ Automatic acquisition

ˇ Adaptive (FIR) equalizer

ˇ Internal Viterbi and Reed-Solomon FEC

ˇ Internal SNR and BER monitors

ˇ DiSEqCTM Level 1.1 LNB control

High-Performance, Low-Power Broadband
Satellite Front-End Solution

Combining Conexant's experience in broadband systems and

mixed-signal integrated circuit design, the CX24110 is the ideal

solution for a wide variety of applications in DVB/DSS set-top and

PC receivers, digital VCRs, and single/multiple-channel per carrier

receivers. When combined with the CX24108 satellite tuner RF IC,

the CX24110 provides a complete broadband satellite front-end

solution capable of operating from 1 to 45 Msps in the most

demanding satellite environments.

The CX24110 is a QPSK/BPSK demodulator IC with internal dual

analog-to-digital converters, digital demodulation, and forward-error

correction (FEC). The demodulator IC provides digital derotation,

digital filtering, equalization, and Viterbi/Reed-Solomon FEC. The

CX24110 is compliant with the DVB (ETS 300-421) specification

for satellite transmission.

The CX24110 provides many advanced features that enhance overall

system performance. The demodulator IC automatically corrects

for external quadrature gain/phase imbalances and for DC offsets.

The input signal level variations (e.g., due to rain fade) are com-

pensated for the Automatic Gain Control, and frequency offsets due

to inexpensive consumer LNBs are corrected by a robust-carrier

tracking loop. A unique feature of the CX24110 is an automatic

acquisition algorithm which searches and acquires the carrier during

initial acquisition, and performs a smart search to reacquire the

carrier during fade conditions. The CX24110 has integrated SNR

and BER monitors for channel-performance measurements.

d i g i t a l i n f o t a i n m e n t p r o d u c t s

QPSK/BPSK
Demodulator lC

C X 2 4 1 1 0

f e a t u r e s a n d s p e c i f i c a t i o n s

Product Features

ˇ QPSK/BPSK demodulation

ˇ DVB/DSS compliant

ˇ Symbol rates: 1 to 45 Msps

ˇ Automatic acquisition

ˇ Adaptive (FIR) equalizer

ˇ Internal carrier and bit timing recovery

ˇ Internal Viterbi and Reed-Solomon FEC

ˇ Internal SNR and BER monitors

ˇ DiSEqCTM Level 1.1 LNB control

Product Specifications

ˇ External crystal frequency: 10 MHz

ˇ Sampling frequency: 45,60,80,90 MHz

ˇ Carrier tracking: ą sample frequency/8

ˇ Quadrature equalization compensation:

ą3 dB gain, ą13

° phase

ˇ Viterbi decoding rates:

1/2, 2/3, 3/4, 4/5, 5/6, 6/7, and 7/8

ˇ Output data interface: serial or parallel

ˇ Supply voltage: +3.3V, +1.8V

Ordering Information

Model Number

Package

Ambient Temperature Range

CX24110

100-pin PQFP

0°C to +70°C

CX24110 EVK

Evaluation Kit

CX24110 block diagram

Conexant and the Conexant symbol are trademarks of Conexant Systems, Inc.

www.conexant.com

Further Information

literature@conexant.com

(800) 854-8099 (North America)

(949) 483-6996 (International)

Order # 100970A

00-0601

Digital Infotainment

Printed in USA

World Headquarters

Conexant Systems, Inc.

4311 Jamboree Road

Newport Beach, CA
92660-3007

Phone: (949) 483-4600

Fax 1: (949) 483-4078

Fax 2: (949) 483-4391

Americas

U.S. Northwest Santa Clara

Phone: (408) 249 -9696

Fax: (408) 249 -7113

U.S. Southwest Los Angeles

Phone: (805) 376 -0559

Fax: (805) 376 - 8180

U.S. Southwest Newport Beach

Phone: (949) 483-9119

Fax: (949) 483-9090

U.S. San Diego

Phone: (858) 713-4730

Fax: (858) 713-4008

U.S. North Central Illinois

Phone: (630) 773-3454

Fax: (630) 773 -3907

U.S. South Central/Mexico
Texas

Phone: (972) 733-0723

Fax: (972) 407- 0639

U.S. Northeast Massachusetts

Phone: (978) 367-3200

Fax: (978) 256 - 6868

U.S. Carolinas North Carolina

Phone: (919) 858 -9110

Fax: (919) 858 - 8669

U.S. Southeast/South America
Florida

Phone: (727) 799 - 8406

Fax: (727) 799 - 8306

U.S. Mid-Atlantic Pennsylvania

Phone: (215) 244- 6784

Fax: (215) 244- 9292

Canada Ontario

Phone: (613) 271-2358

Fax: (613) 271-2359

Europe

Europe Central Germany

Phone: +49 89 829 -1320

Fax: +49 89 834-2734

Europe North England

Phone: +44 1344 486444

Fax: +44 1344 486555

Europe Israel/Greece

Phone: +972 9 9524000

Fax: +972 9 9573732

Europe South France

Phone: +33 1 41 44 36 51

Fax: +33 1 41 44 36 90

Europe Mediterranean Italy

Phone: +39 02 93179911

Fax: +39 02 93179913

Europe Sweden

Phone: +46 (0) 8 5091 4319

Fax: +46 (0) 8 590 041 10

Europe Finland

Phone: +358 (0) 9 85 666 435

Fax: +358 (0) 9 85 666 220

Asia Pacific

Taiwan

Phone: (886 -2) 2-720-0282

Fax: (886 -2) 2-757- 6760

Australia

Phone: (61-2) 9869 4088

Fax: (61-2) 9869 4077

China Central

Phone: 86 -21- 6361-2515

Fax: 86 -21- 6361-2516

China South

Phone: (852) 2 827- 0181

Fax: (852) 2 827- 6488

China South (Satellite)

Phone: (86) 755 -5182495

Fax: (86 ) 755 -5183024

China North

Phone: (86 -10) 8529 - 9777

Fax: (86 -10) 8529 - 9778

India

Phone: (91-11) 692-4789

Fax: (91-11) 692 -4712

Korea

Phone: (82-2) 565-2880

Fax: (82-2) 565-1440

Korea (Satellite)

Phone: (82-53) 745-2880

Fax: (82-53) 745-1440

Singapore

Phone: (65) 737 7355

Fax: (65) 737 9077

Japan

Phone: (81-3) 5371 1520

Fax: (81-3) 5371 1501

Part Number CX24110