CONEXANT CX2427X

Set-top Box Solutions
Satellite
Set-top Box Solutions
Satellite
Product of the Year Award Winner
Best Silicon Innovation
Dual Decode HDTV MPEG-2/H.264/VC-1
Video Decoder
CX2427x
Conexant’s portfolio includes a comprehensive suite of semiconductor
solutions for broadband communications and the digital home.
Conexant’s CX2427x is a highly integrated, triple-display dual decode
MPEG-2/H.264/VC-1, DIRECTV/DVB compliant, back-end decoder IC solution
for high-definition digital TV systems with support for personal video recorder
(PVR) applications, which can be deployed in digital satellite, cable, Telco or
terrestrial TV networks.
The CX2427x family features a flexible, multi-program HDTV multi format video
decoder capable of decoding two HDTV programs simultaneously in any dual
stream combination of MPEG-2, H.264 and VC-1 formats. Three TV outputs
are supported, a primary HDTV display with simultaneous down-converted
SD output, plus an independent down-converted NTSCL/PAL SDTV output.
The dual multi-format 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 128KByte
L2 cache supplying over 800 Dhrystone 1.2 MIPS at 666MHz, and a high
performance, unified memory, dual 667MHz 32-bit DDR-2 SDRAM memory
controllers give ample processing power for advanced applications and future
expansion capability.
each of which is based on a dedicated RISC engine, with each supporting six
• Dual PVR support with dual SATA-2/eSATA-2 interface
simultaneous transport streams (3 from baseband inputs and 3 from DMA
• Multiple OS support including Nucleus+, VxWorks,
Linux® and Windows® CE
access system. The CX2427x integrates dual serial ATA2 controllers with
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.
07-2693
www.conexant.com
General Information:
U.S. and Canada: (888) 855-4562
International: (732) 345-7500
Headquarters
4000 MacArthur Blvd.
Newport Beach, CA 92660
Order# PRB-200960A
• Three TV outputs, primary HDTV display with
simultaneous down-converted SD output, with
independent down-converted NTSCL/PAL SDTV output
• High-performance ARM1176 CPU with 128K L2 cache
providing 800+ DMIPS
interfaces). Each transport processor unit also supports DVB, DES, AES or
© 2007, Conexant Systems, Inc. All Rights Reserved. Conexant and the Conexant
• DVB/DIRECTV® compliant back-end HDTV decoder
for worldwide markets
PVR functionality is supported by two multi-stream transport processors,
Multi-II descrambling and contains hardware support for the NDS conditional
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.
Distinguishing Features
support for internal and external HDD attachments with 3DES/AES ciphering
engines for encryption of data to the HDD.
The CX2427x also features an impressive array of I/O features, including
HDMI with HDCP, an integrated RF modulator, dual BTSC stereo encoders,
• Dual video decoder with MPEG-2, H.264 and
VC-1 support
• Dual advanced audio decoders with multiple audio
format support
• Advanced security features including secure boot
software authentication, IC personalization via OTP
memory, SVP support and 3DES/AES ciphering engines
• HDMI transmitter with HDCP content protection
dual USB 2.0 host controller with integrated Phys, an additional USB1.1
• High performance de-interlacer with 480i or 1080i to
480p/720p conversion
solution, dual integrated 10/100 Ethernet MAC with MII, PCI bus, HomePlug®
• Integrated V.92 hardware modem
connectivity via a high-speed UART and an integrated V.92 hardware modem.
• OpenCable M-Card support
The CX2427x fully supports cable applications when used in conjunction
with the CX24450-CX24453 DOCSIS 2.0+ STB Front End IC, supporting an
Part Number CX2427x
OpenCable™ Cable CARDTM M-Card™ interface.
Description
HDTV MPEG-2/H.264/VC-1
Video Decoders
Set-top Box Solutions
Satellite
For a complete HDTV hardware design, the only additional
The CX2427x IC family is integrated into a fully engineered
Common Platform for Satellite, Cable, IP and Terrestrial
front ends, including QPSK, 8-PSK, DVB-S2, QAM, OFDM, 8-VSB,
components required are a tuner, demodulator, modem DAA,
interactive TV STB reference development system that implements
STB manufacturers increasingly look to leverage a common
ADSL/VDSL, 802.3, 802.11a/b/g, Homeplug, MoCA® or IEEE
1394 through either transport stream, MII or PCI interfaces. This
double data rate (DDR-2) synchronous dynamic random access
third-party interactive middleware/real-time operating system
hardware platform that can be reused over various broadband
memory (SDRAM), and flash memory ICs. This level of integration
(RTOS) platforms and provides a complete set of STB low-level
networks, including satellite, cable, terrestrial, DSL, and Telco
provides a flexible STB solution that can be targeted to a variety
enables a low-cost system bill of materials and allows the
drivers. The STB development platform hardware is designed
networks. Conexant’s CX2427x ICs can serve as a common
of broadband operators while minimizing hardware/software
flexibility of supporting different modulation and compression
with a flexible architecture that supports multiple front end
back-end platform that easily interfaces to a variety of broadband
development costs.
technologies with a low cost, highly featured MPEG solution
tuner/demodulator daughter boards. A mature and robust hardware
for dual TV set-top box (STB) applications.
abstraction layer 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.
• High-performance ARM1176 CPU with 128K L2 cache
supplying 800+Dhrystone 1.2 MIPS at 666MHz
• Nine 10-bit video DACs; supports multiple output
scenarios on a primary HD display with the same
content downscaled to SD on a second display, with
different HD content downscaled to SD on a third display
• Dual 667MHz 32-bit DDR-2 memory interface (optionally
configurable for 400MHz DDR support)
• Macrovision® 7.x copy protection with 525p/625p
optional support
• DIRECTV/DVB transport stream demultiplexing
• Advanced security features including secure boot SW
authentication, IC personalization via OTP memory, and
3DES/AES ciphering engines
CX2427x Product Features
TSIN0
TSIN1
TSIN2
TSIN3
TSIN4
TSIN5
TSIN6
TSIN7
TSIN8
TSIN9
Transport
Stream
Sources/
Sinks
RJ-45
CX2427x
MPEG
GPIO
Decoder
MII
Flash
DDR2-SDRAM
DDR SDRAM
IR OUT
IR Blaster
SDRAM1
PCI
HDMI Tx
HDMI
• Supports MPEG-2 [email protected], [email protected] [email protected], [email protected]
YPrPb
YPrPb
• Supports H.264 [email protected] and [email protected]
Y/C
• Supports VC-1 [email protected] and [email protected]
CVBS0
CVBS TV1
• Multi-plane video/graphics display controller
CVBS1
CVBS TV2
S/PDIF
S/PDIF
• HD displays supports HD 1080i and 720p picture output
with six-plane compositing
L+R Stereo1
• Supports constrained HDTV image output on YPrPb
L+R Stereo2
• Supports video plane re-sizing for format conversion,
picture-in-picture, or picture-in-graphics
Audio Out
PCM Out
SATA-2
HDD
eSATA
HDD
ATA
ATA
Modem
V.92
• Two multi-standard transport processors with 3DES, AES
and Multi-II descrambling
• Transport stream processing capability supporting up to
6 records and 2 playback streams simultaneously for dual
HD-PVR support
IR RCU Detect
YC
SDRA<0
32
UHF RCU Detect
PCI
I/0 Bus
32
UHF IN
IR IN
MII
64
Smart Card Reader
Smart Card Reader
SC0
SC1
MII
10/100 PHY
Buttons/LEDs
Audio DAC
USB0
USB2
USB1
USB2
USB2
USB1.1
M-Card
M-Card
CX20548
DAA
CX2427x System Block Diagram
RJ-11
• Secure video processor (SVP) support
• Integrated DIRECTV security
• HDMI transmitter with HDCP
• Integrated RF modulator
• Dual BTSC stereo encoders
• Dual USB2.0 host controllers with integrated Phys
• USB 1.1 controller and Phy
• NDS XTV and RASP PVR support
• Dual Serial ATA-2 interfaces for internal or external
HDD attachment
• Dual channel 10/100 Ethernet MAC with overclocked MIIs
• High-performance de-interlacing supports 480i to
480p/720p and 1080i to 480p/720p conversions
• Two Smart Card ports
• Multi-format audio decoders supporting dual program
decoding of any combination of MPEG-1, MPEG-2,
Dolby Digital, Dolby Digital Plus, MPEG-2 AAC, MPEG-4
AAC, aacPlus, WMA and WMA Pro encoded bitstreams
• CCIR656 YCrCb digital video output port
• Advanced 2D graphics rendering engine for alphablt,
bitblt, textblt, line draw, and color expansion acceleration
• OpenCable™ CableCARD™ M-Card interface
• 32-bit 33 MHz PCI controller
• Multiple I2S, 12C, SPI, GPIO, UARTs
• Integrated V.92 hardware modem
• 2 ultra-high frequency (UHF) remote inputs
• Infrared (IR) input/output