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 to 224 Dhrystone 2.1 MIPS 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

MPEG-2/DVB/DIRECTV � broadcast service decoder for worldwide markets Single IC DBS STB solution with integrated QPSK demod/FEC and NTSC 3/4 RF modulator High-performance 32-bit 220 MIPS ARM920 CPU with & D caches Advanced security features for DBS broadcasters High-performance 2D graphics rendering acceleration Multiplane video/graphics compositing and display engine High-performance or 32-bit unified memory controller architecture

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 flash memory.

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.