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CX22490 데이터시트 PDF




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부품번호 CX22490 기능
기능 (CX22490 / CX22496) lnteractive TV Decoders
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CX22490 데이터시트, 핀배열, 회로
www.DataSheet4U.com
digital infotainment products
lnteractive TV Decoders
CX22490/22496
Single-Chip Interactive TV Solutions
Conexants interactive TV decoder products provide complete
system solutions for the core electronics of high-performance set top
boxes deployed in digital satellite, cable or terrestrial TV networks.
The CX22490 and CX22496 offer an advanced, embedded 32-bit RISC
CPU, an MPEG-2 audio/video decoder and 2D graphics performance.
This combination enables consumer electronics manufacturers to
build low-cost digital TV set top boxes to support a wide range of
advanced, interactive, consumer entertainment services.
CX22490/22496-based set top box system
The CX22490 and CX22491 combine an MP@ML MPEG-2 video
decoder, a digital audio decoder, a programmable MPEG-2/DVB/
ATSC/DSS transport stream demultiplexer, a high-speed 2D graphics
rendering engine, and an advanced display compositing engine with
a high-performance, embedded 32-bit 175 MIPS ARM940T RISC
processor and integrated peripheral I/O ports. These second-
generation interactive TV decoders share a common core feature
set. The CX22490 adds USB and IDE multiword DMA support to the
core features, while the CX22496 adds NDS CA hardware support.
Distinguishing Features
MPEG-2 A/V decoding, Dolby Digital decoding
Dedicated RISC-based transport
stream processor
High-performance 32-bit 175 MIPS integrated
CPU (ARM940T)
High-performance 2D graphics
rendering acceleration
Multiplane video/graphics compositing
and display engine
High-performance unified memory
controller architecture
Full suite of set top peripheral I/O
interface controllers




CX22490 pdf, 반도체, 판매, 대치품
features and specifications
Full-Featured Development Platform
These ICs are packaged in a fully-engineered interactive
TV decoder development system that runs on third-party
interactive middleware/RTOS platforms and provides
complete set top box functionality. The initial platform
comes equipped with fully-integrated OpenTV, pSOS and
VxWorks runtime and driver software components. The
development platform set-top box hardware has a modular
design, allowing OEMs to configure the system with their
choice of tuner/demodulator, analog modem, TV encoder,
audio DAC and SDRAM buffer size.
CX22490/22496 block diagram
Product Features
• MPEG-2 MP@ML video decoder
supporting NTSC and PAL CCIR601
image resolution
• MPEG-1/MPEG-2 audio decoder and
Dolby Digital (AC3)
• MPEG-2/DVB/ATSC/DSS transport
stream demultiplexing
• Integrated DVB common descrambler
• NDS conditional access embedded
in the CX22496
• 160 MHz 175 MIPS 32-bit
ARM940T CPU
• Advanced 2D graphics rendering for
bitblt, textblt, line draw and color
expansion acceleration
• Unified memory architecture
supporting 32-bit, 133 MHz SDRAM
• MPEG picture and still plane upscaling
and downscaling
• Multiplane video/graphics image
compositing with color key or
256-level alpha blending
• Video-picture-in-graphics and
video-picture-in-video-picture support
• Flicker filtering, aspect ratio
conversion and hardware cursor
• 4/8/16/32-bit RGB/YCrCb graphics
• PCM audio mix and playback
– USB 1.1 OHCI host controller
(CX22490 only)
– IDE multiword DMA support
(CX22490 only)
Serial, I2C and GPIO ports
Bi-directional IR controller and
dual smart card controllers
www.conexant.com
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# 100877B
01-0727
© 2001, Conexant Systems, Inc. All Rights Reserved.
Conexant and the Conexant logo are trademarks
of Conexant Systems, Inc. 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.

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관련 데이터시트

부품번호상세설명 및 기능제조사
CX22490

(CX22490 / CX22496) lnteractive TV Decoders

Conexant Systems
Conexant Systems
CX22496

(CX22490 / CX22496) lnteractive TV Decoders

Conexant Systems
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