CONEXANT CX24146

Set-top Box Solutions
Satellite
Single-Chip FTA and FTA-CI Set-Top Box
System Solution
CX24142/3/6/7
Complete IC System Solution for Worldwide FTA and
FTA-CI Platforms
Conexant’s broadband communications portfolio includes a comprehensive suite
of semiconductor solutions that enable the digital home and information network.
Conexant’s Single-Chip Free-To-Air (FTA) and FTA-Common Interface (FTA-CI)
Set-top box (STB) System Solution features all the major subsystems required
to implement the core system and decoder electronics of a DVB-compliant
FTA-CI STBs. The CX24142/3/6/7 IC family includes an MPEG-2 A/V decoder
(Dolby Digital audio is optional), transport processor, a 32-bit RISC CPU, a
hardware 2D graphics accelerator, TV encoder, QPSK demodulator (CX24142/3
only), a video/graphics display compositing controller, support for dual DVB-CI
interface (CX24142/6 only), and a set of peripheral I/O ports for set-top box front
and back panel connectors. For a complete system hardware design, the only
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additional components required are a tuner, modem codec (optional), audio DAC,
SDRAM and flash memory ICs. This high level of integration results in a very lowcost system bill-of-materials for FTA and FTA-CI STB markets worldwide.
Common Platform for Satellite, Cable, and Terrestrial
STB manufacturers increasingly look to leverage a common hardware platform
that can be reused over various broadband networks including satellite, cable,
terrestrial, DSL and Ethernet IP networks. Conexant’s CX24146/7 ICs can serve
as a common back-end platform that easily interfaces to a variety of broadband
front-ends through a transport stream interface. This provides a flexible STB
solution that can be targeted to a variety of STB applications while minimizing
hardware/software development costs. CX24142-3 devices, with an integrated
QPSK demodulator, provide a cost effective system solution for DVB-S satellite
STBs.The CX24142/3/6/7 ICs are pin-to-pin compatible and software compatible
with the CX2415x family of ICs.
Full-Featured Development Platform
The CX24142/3/6/7 IC family is integrated into a fully engineered STB reference
development system that implements third-party interactive middleware/RTOS
platforms and provides complete STB functionality. The hardware platform
comes equipped with fully integrated Nucleus+, pSOS and VxWorks runtime
libraries and driver software components. A mature and robust hardware
abstraction layer is assured by re-use of core driver libraries developed on
previous generation ICs. The development platform set-top box hardware is
designed in a two-layer PCB configuration and includes a choice of two robust
tool chain development environments for code developers: ADS 1.2 from ARM,
Inc. and Tornado 2.2 from WindRiver Systems, Inc. Conexant offers a complete
development code solution that has been tightly integrated with both third party
tool chain environments.
CX24142/3/6/7 Distinguishing Features
• MPEG-2/DVB broadcast service
decoder for DVB-S/T/C markets
• Integrated 1-45 Msym/sec QPSK/
BPSK demodulator/FEC with DiSEqC
2.x signaling support (CX24142/3 only)
• 32-bit 146 MIPS ARM920 CPU with
16KB I & D caches
• Dual-slot Common Interface support
(CX24142/6 only)
• 16-bit unified memory
controller architecture
• Integrated NTSC/PAL/SECAM TV
encoder supporting simultaneous
CVBS, Y/C & RGB/YPrPb analog video
output signals
• Complete V.22 software
modem available
Part Number CX24142/3/6/7
Description
Single-Chip FTA and FTA-CI
Set-top Box Solutions
Satellite
CX24142/3/6/7 Features
• MPEG-2 [email protected] video decoder supporting NTSC and PAL
CCIR601 image resolution
• Integrated NTSC/PAL/SECAM TV encoder supporting
simultaneous CVBS, Y/C & RGB/YPrPb analog video
output signals
• MPEG-1/MPEG-2 and Dolby Digital (AC-3) audio decoder
• MPEG-2/DVB transport stream demultiplexing
• High-performance 2D graphics rendering acceleration
• Integrated 1-45 Msym/sec QPSK/BPSK demodulator/FEC with
• Multiplane video/graphics compositing and display engine
DiSEqC 2.x signaling support (CX24142/3 only)
• Integrated DVB common descrambler & DES ECB descrambler
• 32-bit 146 MIPS ARM920 CPU with 16KB I & D caches
• Optional NDS Videoguard conditional access hardware support
• Dual-slot Common Interface support (CX24142/6 only)
• Flicker filtering, aspect ratio conversion and hardware cursor
• Dual SmartCard interface for flexible CAS support
• 4/8-bit per pixel palletized AYCrCb/YCrCb graphics
• 16-bit unified memory controller architecture
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License-based feature configurations are identified
using a part number suffix or dash number.
The CX24142/3/6/7 IC family includes four part numbers
defined by different functionality combinations.
CX24142/3/6/7-mn
Part Number
QPSK Demod
VDACs
DRAM
DVB-CI
CX24142
Yes
6
16-bit
Yes
CX24143
Yes
6
16-bit
No
CX24146
No
6
16-bit
Yes
CX24147
No
6
16-bit
No
© 2003, Conexant Systems, Inc. All Rights Reserved. Conexant and the
Conexant logo are trademarks of Conexant Systems, Inc. All other trademarks
are owned by their respective owners. Although Conexant strives for accuracy
in all its publications, this material may contain errors or omissions and is
subject to change without notice.
THIS MATERIAL IS PROVIDED AS IS AND WITHOUT
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE AND NON-INFRINGEMENT.
Conexant shall not be liable for any
special, indirect, incidental or consequential damages as a result of its use.
03-0882
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General Information:
U.S. and Canada: (800) 854-8099
International: (949) 483-6996
Headquarters – Newport Beach
4311 Jamboree Rd, P.O. Box C
Newport Beach, CA 92660-3095
Order# 102214A
”-1n”
”-2n”
”-3n”
Macrovision
Dolby Digital
m = License based feature (0 thru 4)
n = die revision (e.g. n=1 for die rev A, 2 for die rev B etc.)
”-4n”