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FUSION878A

PCI Video Decoder

Conexant Systems 

1

1.0 Product Overview

1.1 Functional Overview

The Fusion 878A video and audio capture chip is a multi-function peripheral

component interconnect (PCI) device intended for +5 V only operation. The

video function features a direct memory access (DMA)/PCI bus master for analog

NTSC/PAL/SECAM composite, S-Video, and digital CCIR 656 video capture.

The audio function features a completely independent DMA/PCI bus master for

FM radio or TV sound capture.

The Fusion 878A is based on the Bt848A video capture chip. The Fusion

878A is a Bt848A upgraded to include various audio capture capabilities. The

main features of the Bt848A are: NTSC/PAL/SECAM video decoding, multiple

YCrCb and RGB pixel formats supported on the output, vertical blanking interval

(VBI) data capture for closed captioning, teletext, and intercast data decoding.

The complete set of video and audio capture features are documented in this data

sheet.

Table 1-1 indicates which audio capture features are added to the Bt848A to

produce the Fusion 878A.

Table 1-1. Audio/Video Capture Product Family

All Features of the Bt848A, Plus:

CN878A

Mono line level and MIC level audio capture

x

Mono TV audio

x

ACPI Support

x

Figure 1-1 illustrates a block diagram of the Fusion 878A, and Figure 1-2

illustrates a detailed block diagram of the decoder and scaler sections of the

Fusion 878A.

100600B

Conexant

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