Data Sheet
100600B
December 3, 1999
Fusion 878A
PCI Video Decoder
The Fusion 878A is a complete, low cost, single-chip solution for analog
broadcast signal capture on the PCI bus. The Fusion 878A 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 Fusion 878A has all the video and audio capture features of the
Bt878, plus a whole lot more. Designed to address the demanding
requirements of the Personal Computing and digital video industry, Fusion
878A meets PC98/PC99 requirements as well as being fully PCI 2.2
compliant. Fusion 878A addresses the current analog PC TV requirements
since it is pin for pin compatible and software compatible with the current
Bt878. But, Fusion 878A can also be used in an array of MPEG digital
transport stream products as well. The world is turning digital, with new
standards in Television – ATSC and COFDM – and Television recording
technologies using MPEG compression. Fusion 878A can be used as the hub
into the PC connecting the multiple analog and digital video formats in the
PC via a single PCI connection.
Functional Block Diagram
40 MHz
ADC
40 MHz
ADC
PCI I/F
Composite 1
PCI
Bus
S-Video (C)
TV
FM
Composite 2
Composite S-Video (Y)
Mic
High BW
Audio
ADC
Input
Gain
Control
Ultralock
and Clock
Generation
Video
Decode
and Scaling
I2C
GPIO
Composite 3
Composite 4
GPIO and Digital/Video Port
3:1
MUX
Target
Initiator
Target
Initiator
Audio
Stream
Format
Audio FIFO
DMA
Controller
DMA
Controller
Video FIFO
Pixel
Format
Conversion
879A_001
I2S (dig. audio)
Decimation
LPF
Distinguishing Features
NTSC/PAL/SECAM video decoding
Supports capture resolutions up to 768 x 576 (full
PAL)
On-chip PCI bus mastering and bridge
functionality
Supports HDTV/audio/MPEG2 transport data
across PCI bus
High-speed serial port support MPEG transport
stream up to rates of 40 Mbps
High-speed parallel port supports MPEG transport
streams up to 20 Mbps
Flexible 24-bit wide GPIO
CCIR656 interface
Interfaces to a Digital TV data stream from a VSB
or OFDM demodulator
Multiple YCrCb and RGB pixel formats and YUV
planar formats supported on output
Selectable pixel density: 8, 16, 24, and 32 bits per
pixel
Performs complex clipping of video source and
VGA video overlay
Permits different program control and color
space/scaling for even and odd fields
Executes Windows 98 “Scatter and Gather”
Integrates advanced chroma and luma comb
filters/scalers
Image scaleable in X and Y direction
Y/C, 6-tap luma/2-tap chroma polyphase filter
Receives Digital audio via I2S serial port
Includes VBI data capture (closed captioning,
teletext, and Intercast data decoding)
100% PCI Rev. 2.2 compliant
PC 98/PC 99 compliant
WHQL-certifiable
Accepts Mono audio input
Packaged in compact 128-pin plastic QFP
Fusion 878A Specific Features
Full stereo decoding for both TV audio (BTSC) and
FM radio
Enhanced GPIO/I2S
ACPI support
Byte alignment
Vital product data
High speed serial port
High speed parallel port
Applications
PC television
Digital television
Digital VCR
Desktop video phone
Still frame capture
VBI data service capture