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LCD PC E
LCD PC E
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8590 MAINTENANCE
8590 MAINTENANCE
1.3.3 Video Decoder Conexant CX878A
The Bt878/879 is a complete, low cost, single-chip solution for analog broadcast signal capture on the PCI bus.
The Bt878/879 takes advantage of the PCI-based system’s high bandwidth and inherent multimedia capability. It is
designed to be interoperable with any other PCI multimedia device at the component or board level. The Bt878/879
has all the video capture features of Bt848A, plus integrated BTSC stereo decode, and FM radio capture data
processing. The DMA capability is enhanced to allow for low latency, digitized audio stream transport. The chip
enables DBX-compliment stereo, TV, FM radio, and base-band video and audio as input sources. In addition, the
chip simplifies the computer/broadcast signal interface down to a single PCI connection.
General Features
Supports NTSC/PAL/SECAM video decoding
Supports image resolutions up to 768x576 (full PAL resolution)
Supports complex clipping of video source
Zero wait state PCI burst writes
Field/frame masking support to throttle bandwidth to target
Multiple YCrCb and RGB pixel formats supported on output
Image size scalable down to icon using vertical & horizontal interpolation filtering
Multiple composite and S-video inputs
Supports different program control for even and odd fields
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