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CX25874 Datasheet(PDF) 1 Page - Conexant Systems, Inc

Part No. CX25874
Description  Video Encoder with HDTV Output
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Maker  CONEXANT [Conexant Systems, Inc]
Homepage  http://www.conexant.com

CX25874 Datasheet(HTML) 1 Page - Conexant Systems, Inc

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• True international support for
NTSC, PAL and SECAM output
• HDTV output capability
• Adaptive flicker filtering
• Supports resolutions from 320 x 200
to 1024 x 768
• Software forward compatible
with the CX25870 and CX25871
• Programmable overscan ratios
from 0% to 25%
• Pin compatible with CX25872 and CX25873
• 64-pin TQFP
High Performance
Video Encoder with
HDTV Output
Distinguishing Features
Highest-Quality Video Encoder with
“Adaptive” Flicker Filtering and HDTV Output
Conexant’s CX25874 and CX25875 video encoders are specifically
designed to meet TV-out cost and performance requirements for
next-generation desktop and notebook PCs, game consoles and
set-top boxes. With software forward compatibility to the CX25870
and CX25871, manufacturers can quickly bring to market new solutions
that provide adaptive flicker filtering, ATSC High-Definition Television
(HDTV) output, and true international television display (NTSC, PAL
and SECAM output). The CX25874 and CX25875 support resolutions
from 320 x 200 to 1024 x 768 and programmable overscan ratios from
0% to 25%. The CX25874 and CX25875 also provide 48 automatic
configuration modes and offer 10-bit DACs.
HDTV Output
HDTV is here. More than 1 million consumers have purchased
HDTV sets. With the start of this television set transition, TV-out
capability must now include the ability to connect PCs, set-top
boxes, DVD players and game consoles to HDTV television sets.
The CX25874 and CX25875 can convert either YCrCb or RGB input
to HDTV output. While the CX25874 and CX25875 are in HDTV output
mode, the device will provide either analog RGB or analog YPBPR
signals and automatically insert tri-level synchronization pulses
(when necessary) and vertical synchronizing “broad pulses”.
The CX25874 and CX25875 are compliant with all existing HDTV
standards including EIA770-4, SMPTE 274M/293M/296M and support
all ATSC HDTV resolutions including 480p, 720p and 1080i.

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