1.0 Product Overview
Fusion 878A
1.2 Detailed Features
PCI Video Decoder
1-4
Conexant
100600B
1.2 Detailed Features
1.2.1 Video Capture
The Fusion 878A integrates an NTSC/PAL/SECAM composite and S-Video
decoder, scaler, DMA controller, and PCI Bus master on a single device. The
Fusion 878A can place video data directly into host memory for video capture
applications and into a target video display frame buffer for video overlay
applications. As a PCI initiator, the Fusion 878A can take control of the PCI bus
as soon as it is available, thereby avoiding the need for on-board frame buffers.
The Fusion 878A contains a pixel data FIFO to decouple the high speed PCI bus
from the continuous video data stream.
The video data input may be scaled, color translated, and burst-transferred to a
target location on a field basis. This allows for simultaneous preview of one field
and capture of the other field. Alternatively, the Fusion 878A is able to capture
both fields simultaneously or preview both fields simultaneously. The fields may
be interlaced into memory or sent to separate field buffers.
1.2.2 Audio Capture
The Fusion 878A can also capture the broadcast audio spectrum over the PCI bus.
This enables system solutions without the use of an analog audio cable. In
addition, the audio capture can be used to implement microphone audio capture
for complete videoconferencing applications.
1.2.3 Analog Video and Digital Camera Capture
The Fusion 878A includes a digital camera port to support digital video capture.
This specification defines the registers and functionality required for
implementing analog video capture support. Most of the analog and digital video
register settings are identical.
In addition to the standard CCIR 656 digital interface, the Fusion 878A can
accept digital video from digital cameras such as the Conexant Quartsight™,
Silicon Vision™, and Logitech™. Internally the digital stream is routed to the
high-quality down-scaler and color adjustment processing. It is then bus-mastered
into system memory or displayed via the graphics frame buffer.
1.2.4 Intel Intercast™ Support
The Fusion 878A fully supports the Intel Intercast technology. Intel Intercast
technology combines the programming of television and the Internet on the PC.