Set-top Box Solutions
Satellite
CX24152/5
Distinguishing Features
MPEG-2/DVB/DIRECTV
broadcast service decoder for
worldwide markets
Single IC DBS STB solution with
integrated QPSK demod/FEC and
NTSC Ch 3/4 RF modulator
High-performance 32-bit 220 MIPS
ARM920 CPU with 16KB I & D caches
Advanced security features for
DBS broadcasters
High-performance 2D graphics
rendering acceleration
Multiplane video/graphics
compositing and display engine
High-performance 16 or 32-bit unified
memory controller architecture
Complete IC System Solution for Worldwide
DBS 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 IC DBS Set-top box (STB)
System Solution features all the major subsystems required to implement
the core system and decoder electronics of a DBS interactive TV STB.
This includes an MPEG-2 A/V decoder (Dolby Digital audio is optional),
transport processor, a 32-bit RISC CPU, a 2D graphics accelerator, TV
encoder, QPSK demodulator, channel 3/4 RF modulator, a video/graphics
display compositing controller 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 additional components required are a tuner, modem
codec, audio DAC, SDRAM and flash memory ICs. This high level of
integration delivers the low-cost system bill-of-materials sought after
by mainstream digital DBS multichannel TV operators.
An advanced interactive set-top receiver will include sophisticated
middleware to run downloadable applications using a high-speed return
channel. Example applications include Advanced EPGs, online games,
shopping, and interactive polling. The ARM920 CPU in the CX24152/5
offers up to 224 Dhrystone 2.1 MIPS at a 200MHz clock speed. This CPU
platform represents a major advance in capability for the low cost STB
category and will enable complex, MIPS hungry, feature rich middleware
platforms such as MHP to be adopted by broadcasters for low cost
STBs. The advanced CPU platform delivers performance that can be
deployed by STB manufacturers in a variety of ways including improved
interactive application loading and EPG scrolling performance, hardware
feature differentiation via multimedia host signal processing and scalability
to Linux based software platforms via MMU hardware support. Return
channel can be supported by an interface to a host-controlled V.92 modem
or PCI interface to DSL, Ethernet or wireless broadband modem.
Part Number CX24152/5
Description Single IC DBS STB System Solution
Single-Chip DBS Set-Top Box System Solution
CX24152/5
Set-top Box Solutions
Satellite
Advanced Security for DBS Broadcasters
The CX24152/5 incorporates an innovative set of security
technologies that greatly enhances the ability of broadcasters
to protect their service against piracy. Using an advanced
on-chip one-time-programmable (OTP) memory technology,
Conexant offers broadcasters the ability to personalize
individual STBs via the system IC with unique serial numbers
and encryption keys. This allows the broadcaster to secure
transactions between the STB smart card and the broadcaster
service decoder. The CX24152/5 also includes embedded
cryptographic technology to allow secure authentication of the
STB system software that is loaded into the fl ash memory.
RJ-11
CX20493
SmartDAA
Line Side Device
A/V Connectors
SDRAM
CX24155
TDA8004
CA Card
Reader
Front Panel
buttons, indicators, IRin
E
2
PROM
FLASH
RF
Connector
Stereo
DAC
CX24109
Zero I/F Tuner
Xtal
CX24155 Based STB System
CX24152/5
Full-Featured Development Platform
The CX24152/5 IC family is integrated into a fully engineered
interactive TV 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
OpenTV, Alticast, 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 early generation ICs.
The development platform set-top box hardware is designed
with both two and four layer PCB configurations and a variety
of PSTN modem options. A choice of two robust tool chain
development environments are supported for code developers
including the 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.
CX20493
Transport Demultiplexer/
Descrambler
SDRAM
GXA 2D
Graphics
Engine
16/32bit
SDRAM
Controller
MP@ML
Video
Decoder
Audio
Decoder
MPEG/Dolby
ARM 920
CPU
Smart Card I/F
IR TX/RX
UARTs
GPIO/I
2
C
PWM
SmartDAA
Modem
Interface
QPSK Demodulator
& FEC
TV Display
Controller
TV Encoder
CX20493
DAA Line
Side Device
PCI Bridge/
I/OBus
Ch.3/4
RF Mod
109
r
CX24109
Tuner
Flash
CX24155 Block Diagram
2003, 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.
Set-top Box Solutions
Satellite
03-0802
CX24152/5 Features
MPEG-2 MP@ML video decoder supporting NTSC
and PAL CCIR601 image resolution
MPEG-1/MPEG-2 and Dolby Digital (AC-3) audio decoder
MPEG-2/DVB/DIRECTV transport stream demultiplexing
1-45 Msym/sec QPSK/BPSK demodulator/FEC with
DiSEqC 2.x signaling support
NTSC channel 3/4 RF modulator
NTSC/PAL/SECAM TV encoder supporting simultaneous
CVBS, YC & RGB/YPrPb analog video output signals
3DES ciphering engine & integrated OTP memory for unique,
IC security personalization
On-chip boot ROM for secure STB software authentication
Integrated DVB common descrambler & DES ECB descrambler
NDS Videoguard conditional access hardware support
200 MHz 224 MIPS 32-bit ARM920 CPU with 16KB I & D caches
and MMU
Advanced 2D graphics rendering engine for alphablt, bitblt,
textblt, line draw and color expansion acceleration
Unified memory architecture supporting 16 or 32-bit 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 with flexible picture size and aspect ratio
Flicker filtering, aspect ratio conversion and hardware cursor
4/8/16-bit ARGB/A YCrCb graphics
Integrated 32-bit 33 MHz PCI 2.1 bus bridge controller
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# 102160A
CX24152/5 Part Number & Feature Selection Guide
The CX24152/5 IC family includes two primary part numbers defined by different functionality combinations.
"CX" Part #
Demod
DACs
RF Mod Still Plane DRAM
DVB-CI
PCI
note 1
CX24152
yes
6
no
yes
16/32-bit
yes
yes
CX24155
yes
6
yes
yes
16/32-bit
yes
yes
DVB-CI not available simultaneously with PCI
Table 1
License based features and CPU speed grade configurations are designated using a part number suffix or dash number.
CX24152-mn
CX24155-mn
"-1n" "-2n" "-3n" "-4n" "-5n" "-6n" "-7n" "-8n" "-9n" "-0n"
Macrovision
a
a
a
a
Dolby Digital
a
a
a
a
200 MHz CPU
a
a
a
a
160 MHz CPU
a
a
a
a
m = License based feature and/or CPU speed designator (0 thru 9)
n = die revision (e.g. n=1 for die rev A, 2 for die rev B etc.)
r
e
s
e
r
v
e
d
r
e
s
e
r
v
e
d
Table 2
PDF 
ZIP