BT848AKPF Datasheet

IC型號：
BT848AKPF
PDF描述：
Single-Chip Video Capture for PCI
文件大?。?/label>
1081.51KB
PDF頁數(shù)：
141頁
芯片廠家：
ETC

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Advance Information

This document contains information on a product under development.

The parametric information contains target parameters that are subject to change.

Bt848/848A/849A

Single-Chip Video Capture for PCI

Bt848 is a complete, low cost single-chip solution for analog

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 signi鏗?

cantly minimizes the hardware cost for this architecture. Bt848 takes advantage

of the PCI-based system鈥檚 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.

The Bt848A/849A are fully backward compatible enhancements to the

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.

Distinguishing Features

鈥?Fully PCI Rev. 2.1 compliant

鈥?Auxiliary GPIO data port and video data

port

鈥?Supports image resolutions up to

768x576 (full PAL resolution)

鈥?Supports complex clipping of video

source

鈥?Zero wait state PCI burst writes

鈥?Field/frame masking support to throttle

bandwidth to target

鈥?Multiple YCrCb and RGB pixel

formats supported on output

鈥?Supports NTSC/SECAM/PAL analog

input

鈥?Image size scalable down to icon using

vertical & horizontal interpolation

鏗乴tering

鈥?Multiple composite and S-video inputs

鈥?Supports different destinations for even

and odd 鏗乪lds

鈥?Supports different color space/scaling

factors for even and odd 鏗乪lds

鈥?Support for mapping of video to 225

color palette

鈥?VBI data capture for closed captioning,

teletext and intercast data decoding

Functional Block Diagram

XTAL

MUXIN

MUXOUT

Analog

Mux

Ultralock鈩?/div>

and

Clock Generation

Video Timing

Unit

IIC

JTAG

PCI I/F

SYNCDET

REFOUT

AGC

Horizontal, Vertical

and Temporal

Scaling

Decimation LPF

Pixel Format

Conversion

Target

Additional Features

in Bt848A/849A Only

鈥?Supports peaking

鈥?Requires only one crystal

鈥?Digital camera support through GPIO

port

鈥?Support for WST decode (Bt849A only)

YIN

40 MHz

ADC

630 Byte FIFO

Luma-Chroma

Separation

and

Chroma Demod

Digital Camera

Input (Bt848A/849A)

and GPIO Port

Initiator

DMA Controller

CIN

40 MHz

ADC

Applications

鈥?/div>

PC TV

Intercast receiver

Desktop video phone

Motion video capture

Still frame capture

Teletext/Intertext

VBI data services capture

Brooktree

廬

Brooktree Division 鈥?Rockwell Semiconductor Systems, Inc. 鈥?9868 Scranton Road 鈥?San Diego, CA 92121-3707

619-452-7580 鈥?1-800-2-BT-APPS 鈥?FAX: 619-452-1249 鈥?Internet: apps@brooktree.com 鈥?L848A_A

型號

版本

描述

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