CONEXANT CX24501

Set-top Box Solutions
Satellite
HDTV MPEG-2/H.264/VC-1 Video Decoder
CX24501
Conexant’s portfolio includes a comprehensive suite of semiconductor
solutions for broadband communications and the digital home.
Conexant’s CX24501 is a highly integrated, MPEG-2/H.264/VC-1,
DIRECTV/DVB compliant, back-end decoder IC solution for high-definition
digital TV which can be deployed in digital satellite, cable, Telco or terrestrial
TV networks.
The CX24501 features a flexible multi format video decoder capable
of decoding High Definition or Standard Definition programs in MPEG-2,
H.264 and VC-1 formats. The audio decoder supports multiple audio
format decoding, including MPEG-1, MPEG-2, Dolby® Digital, Dolby Digital+.
MPEG-4 aac and aacPlus™, WMA and WMA Pro. An integrated ARM1176
CPU with 32K Instruction and Data cache supplies over 730 Dhrystone
1.2 MIPS at 550MHz, and a high performance 667MHz 32-bit DDR-2 SDRAM
memory controller gives ample processing power for advanced applications
and future expansion capability. An additional 16-bit DDR-2 SDRAM controller
Distinguishing Features
• DVB/DIRECTV® compliant back-end HDTV
decoder for worldwide markets
is also available for high performance applications.
• High-performance ARM1176 CPU with
32K I/D cache providing 730+ DMIPS
The CX24501 also features an impressive array of I/O features, including
• Multiple OS support including Nucleus+,
VxWorks, Linux® and Windows® CE
HDMI with HDCP, dual USB 2.0 host controller with integrated PHYs, an
• MPEG-2, H.264 and VC-1 video decoder
additional USB1.1 solution, dual integrated 10/100 Ethernet MAC with MII,
• Advanced audio decoder with multiple
audio format support
integrated V.92 hardware modem, PCI bus and HomePlug® connectivity via
a high-speed UART. The CX24501 fully supports cable applications when used
in conjunction with the CX24450-CX24453 DOCSIS 2.0+ STB Front End IC,
supporting an OpenCable™ Cable CARDTM M-Card™ interface.
The CX24501 is software compatible with the other single chip MPEG
• Advanced security features including
secure boot software authentication,
IC personalization via OTP memory, SVP
support and 3DES/AES ciphering engines
• HDMI v1.3 transmitter with HDCP
content protection
decoder products from Conexant including the CX24500 and CX2427x family.
• High performance de-interlacer with 480i
or 1080i to480p/720p conversion
A single code base allows common software development to be applied
• Dual USB2.0
to across all platforms minimizing development time and maximizing
• OpenCable M-card support
software reuse.
Part Number CX24501
Description
HDTV MPEG-2/H.264/VC-1
Video Decoder
Set-top Box Solutions
Satellite
For a complete HDTV hardware design, the only additional
The CX24501 IC is integrated into a fully engineered interactive
components required are a tuner, demodulator, double data rate
TV STB reference development system that implements third-
(DDR-2) synchronous dynamic random access memory (SDRAM),
party interactive middleware/real-time operating system (RTOS)
and flash memory ICs. This level of integration enables a low-cost
platforms and provides a complete set of STB low-level drivers.
system bill of materials and allows the flexibility of supporting
The STB development platform hardware is designed with a flexible
different modulation and compression technologies with a low cost,
architecture that supports multiple front end tuner/demodulator
highly featured MPEG solution for dual TV set-top box
daughter boards. A mature and robust hardware abstraction layer
(STB) applications.
is assured by re-use of core driver libraries developed over multiple
generations of production MPEG ICs. Support for Nucleus+ and
Linux OS is included, with the software architected to allow easy
porting to other real-time OS.
CX24501
MPEG
Decoder
Buttons/LEDs
GPIO
TSIN0
Transport
Stream
Sources/
Sinks
TSIN1
SC0
Smart Card Reader
SC1
Smart Card Reader
TSIN2
IR OUT
IR Blaster
IR IN
IR RCU Detect
PCI
PCI
RJ-45
MII
10/100 PHY
MII
MII
Flash
DDR2-SDRAM
64
32
HDMI Tx
HDMI
YPrPb
YPrPb
Y/C
YC
I/0 Bus
CVBS
CVBS
S/PDIF
S/PDIF
SDRAM0
Audio Out
DDR2-SDRAM
16
SDRAM1
optional
Modem
V.92
L+R Stereo
USB0
USB2
USB1
USB2
USB2
USB1.1
M-Card
M-Card
CX20548
DAA
CX24501 System Block Diagram
RJ-11
Common Platform for Satellite, Cable, IP and Terrestrial STB
QPSK, 8-PSK, DVB-S2, QAM, OFDM, 8-VSB, ADSL/VDSL, 802.3,
manufacturers increasingly look to leverage a common hardware
802.11a/b/g, Homeplug, MoCA® or IEEE 1394 through either
platform that can be reused over various broadband networks,
transport stream, MII or PCI interfaces. This provides a flexible
including satellite, cable, terrestrial, DSL, and Telco networks.
STB solution that can be targeted to a variety of broadband
Conexant’s CX24501 IC can serve as a common back-end platform
operators while minimizing hardware/software development costs.
that easily interfaces to a variety of broadband front ends, including
CX24501 Product Features
• High-performance ARM1176 CPU with 32K I/D cache
supplying 730+ Dhrystone 1.2 MIPS at 550MHz
• Six 10-bit video DACs
• Macrovision® 7.x copy protection with 525p/625p
optional support
• 667 MHz 32-bit DDR-2 memory interface with
optional additional 16-bit DDR-2 interface for high
performance applications
• Advanced security features including secure boot
SW authentication, IC personalization via OTP memory
• DIRECTV/DVB transport stream demultiplexing
• Secure video processor (SVP) support
• Multi-standard transport processor with 3DES, AES
and Multi-II descrambling
• Integrated DIRECTV security
• Supports MPEG-2 [email protected], [email protected] [email protected], [email protected]
• Supports H.264 [email protected] and [email protected]
• Supports VC-1 [email protected] and [email protected]
• Multi-plane video/graphics display controller
• HD displays supports HD 1080p, 1080i and 720p picture
output with six-plane compositing
• Supports constrained HDTV image output on YPrPb
• Supports video plane re-sizing for format conversion,
picture-in-picture, or picture-in-graphics
• High-performance de-interlacing supports 480i to
480p/720p and 1080i to 480p/720p conversions
• Multi-format audio decoder supporting decoding
of MPEG-1, MPEG-2, Dolby Digital, Dolby Digital Plus,
MPEG-2 AAC, MPEG-4 AAC, aacPlus, WMA and WMA
Pro encoded bitstreams
• Advanced 2D graphics rendering engine for alphablt,
bitblt, textblt, line draw, and color expansion acceleration
• HDMI v1.3 transmitter with HDCP
• Dual USB2.0 host controllers with integrated PHYs
• Dual channel 10/100 Ethernet MAC with overclocked MIIs
• Two Smart Card ports
• 32-bit 33 MHz PCI controller
• Multiple I2S, 12C, SPI, GPIO, UARTs
• OpenCable™ CableCARD™ M-Card interface
• Infrared (IR) input/output
Set-top Box Solutions
Satellite
Conexant Product Portfolio
The company’s broad portfolio of semiconductor products also includes client-side DSL and cable modem solutions, home network processors,
broadcast video encoders and decoders, digital set-top box components and systems solutions, and dial-up modems. In addition to its IEEE 802.11a/b/gcompliant WLAN chipsets, software, and reference designs, Conexant offers a suite of networking components that includes solutions for applications
based on HomePlug® and HomePNA™. Additional products include a complete line of asymmetric and symmetric DSL central office solutions, which
are used by service providers worldwide to deliver broadband data, voice, and video over copper telephone lines.
© 2007, Conexant Systems, Inc. All Rights Reserved. Conexant and the Conexant
logo are registered 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.
07-2609
www.conexant.com
General Information:
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International: (732) 345-7500
Headquarters
4000 MacArthur Blvd.
Newport Beach, CA 92660
Order# PBR-201182