CX2427X CONEXANT [Conexant Systems, Inc], CX2427X Datasheet - Page 2

• Manufacturer Part Number: CX2427X
• Description: Dual Decode HDTV MPEG-2/H.264/VC-1 Video Decoder
• Manufacturer: CONEXANT [Conexant Systems, Inc]

For a complete HDTV hardware design, the only additional
components required are a tuner, demodulator, modem DAA,
double data rate (DDR-2) synchronous dynamic random access
enables a low-cost system bill of materials and allows the
flexibility of supporting different modulation and compression
technologies with a low cost, highly featured MPEG solution
for dual TV set-top box (STB) applications.
set-top box solutions
Satellite
memory (SDRAM), and flash memory ICs. This level of integration
Transport
Sources/
Stream
Sinks
RJ-45
MII
DDR2-SDRAM
DDR SDRAM
Flash
HDD
HDD
10/100 PHY
SATA-2
eSATA
64
32
32
CX2427x System Block Diagram
TSIN0
TSIN1
TSIN2
TSIN3
TSIN4
TSIN5
TSIN6
TSIN7
TSIN8
TSIN9
MII
MII
I/0 Bus
SDRA<0
SDRAM1
ATA
ATA
Modem
CX2427x
Decoder
MPEG
V.92
Audio Out
PCM Out
HDMI Tx
UHF IN
IR OUT
M-Card
CVBS0
CVBS1
S/PDIF
YPrPb
USB0
USB1
USB2
GPIO
IR IN
SC1
SC0
PCI
YC
The CX2427x IC family is integrated into a fully engineered
interactive TV STB reference development system that implements
third-party interactive middleware/real-time operating system
(RTOS) platforms and provides a complete set of STB low-level
drivers. The STB development platform hardware is designed
with a flexible architecture that supports multiple front end
tuner/demodulator daughter boards. A mature and robust hardware
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.
CX20548
DAA
Audio DAC
RJ-11
Buttons/LEDs
Smart Card Reader
Smart Card Reader
UHF RCU Detect
IR Blaster
IR RCU Detect
PCI
CVBS TV1
CVBS TV2
L+R Stereo1
L+R Stereo2
USB2
USB2
HDMI
YPrPb
Y/C
S/PDIF
USB1.1
M-Card
Common Platform for Satellite, Cable, IP 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 Telco
networks. Conexant’s CX2427x ICs can serve as a common
back-end platform that easily interfaces to a variety of broadband
CX2427x Product Features
• High-performance ARM1176 CPU with 128K L2 cache
• Dual 667MHz 32-bit DDR-2 memory interface (optionally
• DIRECTV/DVB transport stream demultiplexing
• Two multi-standard transport processors with 3DES, AES
• Transport stream processing capability supporting up to
• Supports MPEG-2 MP@HL, MP@ML. MP@LL, SP@ML
• Supports H.264 MP@L4.1 and HP@L4.1
• Supports VC-1 AP@L3 and MP@HL
• Multi-plane video/graphics display controller
• HD displays supports HD 1080i and 720p picture output
• Supports constrained HDTV image output on YPrPb
• Supports video plane re-sizing for format conversion,
• High-performance de-interlacing supports 480i to
• Multi-format audio decoders supporting dual program
• Advanced 2D graphics rendering engine for alphablt,
supplying 800+Dhrystone 1.2 MIPS at 666MHz
configurable for 400MHz DDR support)
and Multi-II descrambling
6 records and 2 playback streams simultaneously for dual
HD-PVR support
with six-plane compositing
picture-in-picture, or picture-in-graphics
480p/720p and 1080i to 480p/720p conversions
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
bitblt, textblt, line draw, and color expansion acceleration
• Nine 10-bit video DACs; supports multiple output
• Macrovision
• Advanced security features including secure boot SW
• 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
• Dual channel 10/100 Ethernet MAC with overclocked MIIs
• Two Smart Card ports
• 32-bit 33 MHz PCI controller
• CCIR656 YCrCb digital video output port
• Multiple I2S, 12C, SPI, GPIO, UARTs
• Integrated V.92 hardware modem
• OpenCable™ CableCARD™ M-Card interface
• 2 ultra-high frequency (UHF) remote inputs
• Infrared (IR) input/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
optional support
authentication, IC personalization via OTP memory, and
3DES/AES ciphering engines
HDD attachment
1394 through either transport stream, MII or PCI interfaces. This
front ends, including QPSK, 8-PSK, DVB-S2, QAM, OFDM, 8-VSB,
ADSL/VDSL, 802.3, 802.11a/b/g, Homeplug, MoCA
provides a flexible STB solution that can be targeted to a variety
of broadband operators while minimizing hardware/software
development costs.
®
7.x copy protection with 525p/625p
®
or IEEE