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| digital infotainment products QPSK/BPSK Demodulator lC CX24110 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 demanding satellite environments. The CX24110 is a QPSK/BPSK demodulator IC with internal dual w analog-to-digital converters, digital demodulation, and forward-error w 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. w .D Distinguishing Features * QPSK/BPSK demodulation * DVB/DSS compliant * Symbol rates: 1 to 45 Msps * Automatic acquisition * Adaptive (FIR) equalizer * Internal Viterbi and Reed-Solomon FEC * Internal SNR and BER monitors * DiSEqCTM Level 1.1 LNB control 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 compensated 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. at aS he et 4U .c om www..com solution capable of operating from 1 to 45 Msps in the most features and specifications Further Information literature@conexant.com (800) 854-8099 (North America) (949) 483-6996 (International) Order # 100970A 00-0601 Digital Infotainment Printed in USA 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 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 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 CX24110 block diagram Ordering Information Model Number CX24110 CX24110 EVK Package 100-pin PQFP Evaluation Kit Ambient Temperature Range 0C to +70C 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 Product Features * * * * * * * * * QPSK/BPSK demodulation DVB/DSS compliant Symbol rates: 1 to 45 Msps Automatic acquisition Adaptive (FIR) equalizer Internal carrier and bit timing recovery Internal Viterbi and Reed-Solomon FEC Internal SNR and BER monitors DiSEqCTM Level 1.1 LNB control Product Specifications * * * * External crystal frequency: 10 MHz Sampling frequency: 45,60,80,90 MHz Carrier tracking: sample frequency/8 Quadrature equalization compensation: 3 dB gain, 13 phase * Viterbi decoding rates: 1/2, 2/3, 3/4, 4/5, 5/6, 6/7, and 7/8 * Output data interface: serial or parallel * Supply voltage: +3.3V, +1.8V Conexant and the Conexant symbol are trademarks of Conexant Systems, Inc. Europe Europe Central - Germany Phone: +49 89 829 -1320 Fax: +49 89 834-2734 www.conexant.com |
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