bt848kpf ETC-unknow, bt848kpf Datasheet
bt848kpf
Manufacturer Part Number
bt848kpf
Description
Single-chip Video Capture For Pci
Manufacturer
ETC-unknow
Datasheet
1.BT848KPF.pdf
(141 pages)
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SYNCDET
MUXOUT
REFOUT
MUXIN
Bt848/848A/849A
Brooktree
Single-Chip Video Capture for PCI
Advance Information
This document contains information on a product under development.
The parametric information contains target parameters that are subject to change.
Bt848
NTSC/PAL/SECAM video capture on the PCI bus. As a bus master, Bt848 does
not require any local memory buffers to store video pixel data which signifi-
cantly minimizes the hardware cost for this architecture. Bt848 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, thus enabling video capture and overlay capability to
be added to PCI systems in a modular fashion at low cost. The Bt848 solution is
independent of the PCI system bus topology and may be used in a variety of sys-
tem bus organizations: directly on a motherboard planar bus, on a card for a pla-
nar or secondary bus.
Bt848. The Bt848A and 849A both include all the functionality of the Bt848,
while adding support for peaking, single crystal operation, and digital camera
support.
Functional Block Diagram
CIN
YIN
The Bt848A/849A are fully backward compatible enhancements to the
is
40 MHz
40 MHz
Analog
AGC
ADC
ADC
Mux
a
complete,
®
Clock Generation
Brooktree Division • Rockwell Semiconductor Systems, Inc. • 9868 Scranton Road • San Diego, CA 92121-3707
619-452-7580 • 1-800-2-BT-APPS • FAX: 619-452-1249 • Internet: apps@brooktree.com • L848A_A
Ultralock™
and
Horizontal, Vertical
Chroma Demod
Luma-Chroma
low
and Temporal
Separation
Scaling
and
cost
Input (Bt848A/849A)
Digital Camera
and GPIO Port
single-chip
Video Timing
XTAL
Unit
DMA Controller
630 Byte FIFO
Pixel Format
Conversion
solution
IIC
for
JTAG
Initiator
PCI I/F
Target
analog
Distinguishing Features
• Fully PCI Rev. 2.1 compliant
• Auxiliary GPIO data port and video data
• Supports image resolutions up to
• Supports complex clipping of video
• Zero wait state PCI burst writes
• Field/frame masking support to throttle
• Multiple YCrCb and RGB pixel
• Supports NTSC/SECAM/PAL analog
• Image size scalable down to icon using
• Multiple composite and S-video inputs
• Supports different destinations for even
• Supports different color space/scaling
• Support for mapping of video to 225
• VBI data capture for closed captioning,
Additional Features
in Bt848A/849A Only
• Supports peaking
• Requires only one crystal
• Digital camera support through GPIO
• Support for WST decode (Bt849A only)
Applications
• PC TV
• Intercast receiver
• Desktop video phone
• Motion video capture
• Still frame capture
• Teletext/Intertext
• VBI data services capture
port
768x576 (full PAL resolution)
source
bandwidth to target
formats supported on output
input
vertical & horizontal interpolation
filtering
and odd fields
factors for even and odd fields
color palette
teletext and intercast data decoding
port
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