BT829AKTF datasheet, PDF - EEWORLD Datasheet

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BT829AKTF: DescriptionVideoStream DECODER; File Size1MB，136 Pages; ManufacturerETC

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BT829AKTF Overview

VideoStream DECODER

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Advance Information

This document contains information on a product under development. The para-

metric information contains target parameters that are subject to change.

Bt829A/827A

VideoStream II Decoders

Bt829A–

Video Capture Processor & Scaler for

TV/VCR Analog Input

Bt827A–

Composite Video and S-Video Decoder

The Bt829A and Bt827A VideoStream™ Decoders are a family of single-chip, pin-

and register-compatible, composite NTSC/PAL/SECAM video and S-Video decod-

ers. They are also pin and register backward compatible with the Bt829/827 family

of products. Low operating power consumption and power-down capability make

them ideal low-cost solutions for PC video capture applications on both desktop and

portable system platforms. They support square pixel and CCIR601 resolutions for

NTSC, PAL and SECAM video. They have a ﬂexible pixel port which supports a

variety of system interface conﬁgurations, and they are offered in 100-pin PQFP and

100-pin TQFP packages.

Distinguishing Features

• Single-chip composite/S-Video

NTSC/PAL/SECAM to YCrCb digitizer

• On-chip Ultralock

™

• Square pixel and CCIR601 resolution for:

– NTSC (M)

– NTSC (M) without 7.5IRE pedestal

– PAL (B, D, G, H, I, M, N, N

combination)

– SECAM

• Chroma comb ﬁlter

• Arbitrary horizontal and 5-tap vertical

ﬁltered scaling

• Hardware closed-caption decoder

• Vertical Blanking Interval (VBI) data

pass-through

• Arbitrary temporal decimation for a

reduced frame-rate video sequence

• Programmable hue, brightness, saturation,

and contrast

• User-programmable cropping of the video

window

• 2x oversampling to simplify external

analog ﬁltering

• Two-wire Inter-Integrated Circuit (I

bus interface

• 8- or 16-bit pixel interface

• YCrCb (4:2:2) output format

• Software selectable four-input analog

MUX

• 4 fully programmable GPIO bits

• Auto NTSC/PAL format detect

• Automatic Gain Control (AGC)

• Typical power consumption 0.85 W

• IEEE 1149.1 Joint Test Action Group

(JTAG) interface

• 100-Pin PQFP and TQFP packages

Functional Block Diagram

XT0

MUX0

MUX1

MUX2

MUX3

MUXOUT

SYNCDET

REFOUT

YREF+

YIN

YREF–

CREF+

CIN

CREF–

XT1

Analog

MUX

AGC

Decimation LPF

Output Formatting

Ultralock™

and

Clock

Generation

JTAG

Video

Timing

Video

Timing

Unit

40 MHz

ADC

Output

Control

40 MHz

ADC

Luma-Chroma

Separation

and

Chroma

Demodulation

Spatial and

Temporal

Scaling

Output

Data

Related Products

• Bt819A, Bt829, Bt856/857, Bt864/865,

Bt866/867, Bt852

Applications

•

Multimedia

Image processing

Desktop video

Video phone

Teleconferencing

Interactive video

ABLE OF

ONTENTS

List of Figures

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii

List of Tables

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x

Functional Description

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Functional Overview

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Bt829A Video Capture Processor for TV/VCR Analog Input. . . . . . . . . . . . . . . . . . . .

Bt827A Composite/S-Video Decoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Bt829A Architecture and Partitioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

UltraLock

™

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Scaling and Cropping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

VBI Data Pass-through . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Closed Caption Decoding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pin Descriptions

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Differences Between Bt829/827 and Bt829A/827A

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

UltraLock™

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

The Challenge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Operation Principles of UltraLock™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Composite Video Input Formats

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Y/C Separation and Chroma Demodulation

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Video Scaling, Cropping, and Temporal Decimation

. . . . . . . . . . . . . . . . . . . . . . . . . . 18

Horizontal and Vertical Scaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Luminance Scaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Peaking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chrominance Scaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Scaling Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Image Cropping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cropping Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Temporal Decimation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

L829A_B

iii

Bt829A/827A

ABLE OF

ONTENTS

VideoStream II Decoders

Video Adjustments

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

The Hue Adjust Register (HUE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The Contrast Adjust Register (CONTRAST). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The Saturation Adjust Registers (SAT_U, SAT_V) . . . . . . . . . . . . . . . . . . . . . . . . . .

The Brightness Register (BRIGHT). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

VBI Line Output Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

VBI Frame Output Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Bt829A VBI Data Output Interface

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Closed Captioning and Extended Data Services Decoding

. . . . . . . . . . . . . . . . . . . . 39

Automatic Chrominance Gain Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Low Color Detection and Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Coring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Electrical Interfaces

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Input Interface

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Analog Signal Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Multiplexer Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Autodetection of NTSC or PAL/SECAM Video . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Flash A/D Converters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

A/D Clamping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power-up Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Automatic Gain Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Crystal Inputs and Clock Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2X Oversampling and Input Filtering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output Interfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

YCrCb Pixel Stream Format, SPI Mode 8- and 16-bit Formats. . . . . . . . . . . . . . . . .

Synchronous Pixel Interface (SPI, Mode 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Synchronous Pixel Interface (SPI, Mode 2, ByteStream™) . . . . . . . . . . . . . . . . . . .

CCIR601 Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Starting and Stopping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Addressing the Bt829A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Reading and Writing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Software Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output Interface

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

C Interface

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

L829A_B

BT829AKTF Related Products

	BT829AKTF	BT827A	BT827AKRF	BT829A	BT829AKRF
Description	VideoStream DECODER	VideoStream DECODER	VideoStream DECODER	VideoStream DECODER	VideoStream DECODER

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