Set-top Box Solutions
Satellite/Cable/Terrestrial

CX24153/4/6
Distinguishing Features

ˇ MPEG-2/DVB/DIRECTV

broadcast

service decoder for worldwide
markets

ˇ Single IC STB solution with integrated

NTSC Ch 3/4 RF modulator

ˇ High-performance 32-bit 220 MIPS

ARM920 CPU with 16KB I & D caches

ˇ High-performance 2D graphics

rendering acceleration

ˇ Multiplane video/graphics

compositing and display engine

ˇ High-performance 16 or 32-bit unified

memory controller architecture

Single-Chip Interactive Set-top Box Solutions

Conexant's broadband communications portfolio includes a comprehensive

suite of semiconductor solutions that enable the digital home and

information network. Conexant's interactive TV decoder products

provide complete single IC system solutions for the core electronics

of high performance set-top boxes (STB) deployed in digital satellite,

cable or terrestrial TV networks. The CX24153/4/6 IC family offers a high

performance embedded 32-bit RISC CPU, a complete DVB/DIRECTV

broadcast service decoder system and advanced 2D graphics and

display compositing performance. This combination enables consumer

electronics manufacturers to build low-cost digital TV STBs to support

a wide range of advanced, interactive, consumer services.

Advanced CPU and Graphics Performance

The CX24153/4/6's powerful ARM920 32-bit RISC processor

and advanced video/graphics display controller provide a platform

ideally suited to support advanced interactive middleware platforms

including OpenTV, MHP, and Liberate. The embedded processor 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 Multimedia Home Platform (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, H/W feature differentiation via multimedia host

signal processing and scalability to Linux based S/W platforms via MMU

Part Number CX24153/4/6

Description Digital Broadcast TV Decoders
IC Family

Digital Broadcast TV Decoder IC Family

CX24153/4/6

Set-top Box Solutions
Satellite/Cable/Terrestrial

H/W support. A powerful video/graphics display compositing

engine supports up to five independent image planes to enable

the rich visual interface required for simultaneous TV viewing

and application interaction. Conexant's 2D graphics rendering

engine can composite an unlimited number of graphics planes

with transparency into a single displayable OSD plane.

Additionally, the CX24153/4/6 provides ample CPU processing

power to support implementation of a complete, low-speed

modem datapump and controller in software.

Conexant's interactive TV decoders feature an innovative,

unified memory architecture that reduces memory costs by

servicing all system requirements in a single x16 SDRAM IC.

System hardware costs are further minimized by implementing

analog modem return path functionality in software running

on the ARM920 CPU. Additional contributions to system

bill-of-materials cost reductions come from an integrated

NTSC channel 3/4 RF modulator, integrated VCXO and

system clock generation and an integrated DVB Common

Interface Module Controller.

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

PWM

SmartDAA

Modem

Interface

TV Display

Controller

TV Encoder

CX20493

DAA Line

Side Device

PCI Bridge/

I/OBus

Ch.3/4

RF Mod

109

Tuner

Demod

Flash

CX24153 Block Diagram

Common Platform for Satellite, Cable, 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 Ethernet

IP networks. Conexant's CX24153/4/6 IC's can serve as a

common back-end platform that easily interfaces to a variety

of broadband front-ends, including QPSK, QAM, OFDM, VSB,

ADSL/VDSL, 802.3, 802.11a/b/g, or IEEE 1394 through either

transport stream or PCI interface. This provides a flexible STB

solution that can be targeted to a variety of broadband operators

while minimizing hardware/software development costs.

Conexant also offers a variety of pin compatible CX24153/4/6

options to target network configurations for DVB-MHP, DVB-C,

DVB-T, Free-To-Air, and FTA-CI.

Full-Featured Development Platform

The CX24153/4/6 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 a two-layer PCB configuration 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.

CX24153/4/6 Development Platform

Š 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/Cable/Terrestrial

03-0835

CX24153/4/6 Features

ˇ MPEG-2 MP@ML video decoder supporting NTSC and

PAL CCIR601 image resolution

ˇ MPEG-1/MPEG-2 and Dolby Digital (AC-3) audio decoder
ˇ MPEG-2/DVB transport stream demultiplexing
ˇ NTSC channel 3/4 RF modulator
ˇ NTSC/PAL/SECAM TV encoder supporting simultaneous CVBS,

YC & RGB/YPrPb analog video output signals

ˇ 3DES ciphering engine & integrated OTP memory for unique,

IC security personalization

ˇ On-chip boot ROM for secure STB software authentication
ˇ Integrated DVB common descrambler & DES ECB descrambler
ˇ NDS Videoguard conditional access hardware support

ˇ 200 MHz 224 MIPS 32-bit ARM920 CPU with 16KB I & D

caches and MMU

ˇ Advanced 2D graphics rendering engine for alphablt, bitblt,

textblt, line draw and color expansion acceleration

ˇ Unified memory architecture supporting 16 or 32-bit SDRAM
ˇ MPEG picture and still plane upscaling and downscaling
ˇ Multiplane video/graphics image compositing with color key

or 256-level alpha blending

ˇ Video-picture-in-graphics with flexible picture size and aspect ratio
ˇ Flicker filtering, aspect ratio conversion and hardware cursor
ˇ 4/8/16-bit ARGB/A YCrCb graphics
ˇ 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# 102195A

CX24153/4/6 Part Number & Feature Selection Guide

The CX24153/4/6 IC family includes three primary part numbers defined by different functionality combinations.

"CX" Part #

Demod

DACs

RF Mod Still Plane DRAM

DVB-CI

PCI

note 1

CX24153

yes

16/32-bit

yes

CX24154

yes

16-bit

CX24156

yes

16/32-bit

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.

CX24153-mn
CX24154-mn
CX24156-mn

"-1n" "-2n" "-3n" "-4n" "-5n" "-6n" "-7n" "-8n" "-9n" "-0n"

Macrovision

Dolby Digital

200 MHz CPU

160 MHz CPU

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.)

e
s
e

v
e
d

e
s
e

v
e
d

Table 2

Part Number CX24156