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CX243xx

MPEG-2/DVB Decoder

Overview

Entropic’s CX2433x and CX2438x single-chip system solutions, designed for satellite, cable, and terrestrial applications, include all the major sub-systems required to implement the core system and decoder electronics for use in free-to-air (FTA) and hybrid set-top boxes (STBs).

As highly-integrated solutions that enable a cost-effective STB solution, the CX2433x and CX2438x integrate key features including an MPEG-2 MP@ML decoder, 1-45 Msps quadrature phase-shift keying (QPSK) demodulator (CX24338, CX24388 only), a 32-bit RISC CPU, a 2D graphics accelerator, a TV encoder, a video/ graphics display compositing controller, integrated video DACs, and a set of peripheral I/O ports for STB front-and back-panel connectors.

The CX24336 and CX24338 are housed in 256-pin QFP packages. The more highly featured CX24386 and CX24388 are available in 256-pin eLQFP packaging and include a smart card interface, dual demux, a dual DVB-CI interface, SCART support, and basic PVR functions via an integrated USB 2.0 interface.

Key Features & Benefits

Low-cost, high quality MP@ML Decoder featuring:

  • Computational power provided by a 32-bit, 250 MIPS ARM®946 CPU
  • High performance achieved with a 2D graphics rendering acceleration and a 16-bit SDRAM memory controller architecture
  • Includes integrated 1-45 Msps QPSK demodulator/FEC (CX24338,CX24388 only)
  • Complete reference design package and software solution
  • DVR through an integrated USB 2.0 interface
  • USB/Ethernet connection for networking applications
  • Dual demux for dual-tuner/hybrid applications

Applications

  • Worldwide Free-to-Air and Hybrid Set-top Boxes
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