CX22490 Datasheet, PDF (1/4 Pages) Conexant Systems, Inc – lnteractive TV Decoders

digital infotainment products
lnteractive TV Decoders
CX22490/22496
Single-Chip Interactive TV Solutions
Conexant’s interactive TV decoder products provide complete
system solutions for the core electronics of high-performance set top
boxes deployed in digital satellite, cable or terrestrial TV networks.
The CX22490 and CX22496 offer an advanced, embedded 32-bit RISC
CPU, an MPEG-2 audio/video decoder and 2D graphics performance.
This combination enables consumer electronics manufacturers to
build low-cost digital TV set top boxes to support a wide range of
advanced, interactive, consumer entertainment services.
CX22490/22496-based set top box system
The CX22490 and CX22491 combine an MP@ML MPEG-2 video
decoder, a digital audio decoder, a programmable MPEG-2/DVB/
ATSC/DSS transport stream demultiplexer, a high-speed 2D graphics
rendering engine, and an advanced display compositing engine with
a high-performance, embedded 32-bit 175 MIPS ARM940T RISC
processor and integrated peripheral I/O ports. These second-
generation interactive TV decoders share a common core feature
set. The CX22490 adds USB and IDE multiword DMA support to the
core features, while the CX22496 adds NDS CA hardware support.
Distinguishing Features
• MPEG-2 A/V decoding, Dolby Digital decoding
• Dedicated RISC-based transport
stream processor
• High-performance 32-bit 175 MIPS integrated
CPU (ARM940T)
• High-performance 2D graphics
rendering acceleration
• Multiplane video/graphics compositing
and display engine
• High-performance unified memory
controller architecture
• Full suite of set top peripheral I/O
interface controllers