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TMC2081

更新时间： 2024-09-19 03:59:11

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		/
页数	文件大小	规格书
32页	160K
描述
Digital Video Mixer

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中文翻译

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数据手册

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TMC2081 数据手册

www.fairchildsemi.com

TMC2 0 8 1

Dig it a l Vid e o Mix e r

Description

Features

The TMC2081 is a Digital Video Mixer that performs

• Mixes 24//16-bit GBR/YC_BC_R444//YC_BC_R422 and 8-bit

color-index sources

M = ( a ) V₁+ ( 1-a ) V₂(for 0 £ a £ 1)

• 24//16-bit GBR/YC_BC_R444//YC_BC_R422 output

• 255-step proportional mixing via a_7-0inputs

• 256-step mixing with a_8-0for a=100h unity gain

• 256 x 8-bit look-up table on a channel

• Lap-dissolve and fade effects

• a and crosspoint controls for soft and color-border wipe

generation

• Mask register and three 256 x 8 bypassable CLUTs with

overlay on A-channel

• Analog preview output with sync on Green/Y

• D/A power-down modes

• Single +5 volt power supply operation

• Pin compatible with TMC22080 Digital Mixer

cross-fading at speeds faster than 40 Mpps proportionally

controlled by a 9-bit a-channel input. Variable rate dissolves

and fades may be implementedwith unity gain at the a end-

points. With the a-Look-Up Table (aLUT), mixing may be

controlled by a single bit of the a-channel input. Setup is via

a microprocessor interface.

Supported video formats are 24-bit GBR, YC_BC_R444, and

16-bit YC_BC_R422 component video. Dissimilar pixel for-

mats may be mixed using on-chip interpolation and decima-

tion ﬁlters and GBR/YC_BC_Rand YC_BC_R/GBR color-space

conversion matrices.

An additional format accepted by the A-channel is 8-bit

color-indexed pixel data which addresses three bypassable

256 x 8 color look-up tables (CLUTs). A 15 color overlay

palette and a 24-bit ﬁll register are also included.

Applications

• Mixing computer graphics and live video

• Lap-dissolve between video sources

• Fade to black or to user-selectable ﬁll color

• Window/wipe processing

Digital and Analog outputs may be programmed to view

either mixer inputs, V₁or V₂or mixer output, M.

Packaged in a 128-lead plastic metric quad ﬂat-pack

(MQFP), the TMC2081 is fabricated with a sub-micron

CMOS process. Performance is guaranteed over the com-

mercial, 0°C to 70°C temperature range.

Logic Symbol

PDA

PDB

23-0

8-0

PASS14

SIG14

AVOUT

PASSEN

SIG0

CLK

TMC2081

DIGITAL

VIDEO

3-0

G/Y

B/C

MIXER

SMX

2-0

R/C

SYNC

BLANK

COMP

7-0

2-0

REF

R/W

65-2081-01

Rev. 1.3.0

12 3 4 5 6 7...32

中文翻译

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