ADV7196A_15 datasheet(1/36 Pages) AD

No de pièce	ADV7196A

Description	Multiformat Progressive Scan/HDTV Encoder with Three 11-Bit DACs, 10-Bit Data Input, and Macrovision

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may result from its use. No license is granted by implication or otherwise

under any patent or patent rights of Analog Devices.

a

ADV7196A

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

www.analog.com

Fax: 781/326-8703

Multiformat Progressive Scan/HDTV

Encoder with Three 11-Bit DACs,

10-Bit Data Input, and Macrovision

FUNCTIONAL BLOCK DIAGRAM

CGMS

MACROVISION

SHARPNESS

FILTER CONTROL

AND

ADAPTIVE

FILTER CONTROL

TEST PATTERN

GENERATOR

AND

DELAY

AND

GAMMA

CORRECTION

Y0–Y9

Cr0–Cr9

Cb0–Cb9

CHROMA

4:2:2

TO

4:4:4

(SSAF)

2

INTER-

POLATION

TIMING

GENERATOR

SYNC

GENERATOR

I

2C MPU

PORT

CLKIN

HORIZONTAL

SYNC

VERTICAL

SYNC

BLANKING

RESET

ADV7196A

DAC CONTROL

BLOCK

DAC A (Y)

DAC B

DAC C

V

REF

RESET

COMP

11-BIT+

SYNC

DAC

11-BIT

DAC

11-BIT

DAC

LUMA

SSAF

CHROMA

4:2:2

TO

4:4:4

(SSAF)

FEATURES

INPUT FORMATS

YCrCb in 2

10-Bit (4:2:2) or 3

10-Bit (4:4:4) Format

Compliant to SMPTE-293M (525p), ITU-R.BT1358

(625p), SMPTE274M (1080i), SMPTE296M (720p) and

Any Other High Definition Standard Using Async

Timing Mode

RGB in 3

10 Bit (4:4:4) Format

OUTPUT FORMATS

YPrPb Progressive Scan (EIA-770.1, EIA-770.2)

YPrPb HDTV (EIA-770.3)

RGB Levels Compliant to RS-170 and RS-343A

11-Bit and Sync (DAC A)

11-Bit DACs (DAC B, DAC C)

PROGRAMMABLE FEATURES

Internal Test Pattern Generator with Color Control

Y/C Delay ( )

Gamma Correction

Individual DAC On/Off Control

54 MHz Output (2

Oversampling)

Sharpness Filter with Programmable Gain/Attenuation

Programmable Adaptive Filter Control

Undershoot Limiter

I2C® Filter

VBI Open Control

Macrovision Rev. 1.0 (525p)

CGMS-A (525p)

2-Wire Serial MPU Interface

Single Supply 3.3 V Operation

52-MQFP Package

APPLICATIONS

Progressive Scan/HDTV Display Devices

DVD Players

MPEG 2 at 81 MHz

Progressive Scan/HDTV Projection Systems

Digital Video Systems

High Resolution Color Graphics

Image Processing/Instrumentation

Digital Radio Modulation/Video Signal Reconstruction

I

2C is a registered trademark of Philips Corporation.

GENERAL DESCRIPTION

The ADV7196A is a triple high-speed, digital-to-analog encoder

on a single monolithic chip. It consists of three high-speed video

D/A converters with TTL-compatible inputs.

The ADV7196A has three separate 10-bit-wide input ports which

accept data in 4:4:4 10-bit YCrCb or RGB or 4:2:2 10-bit YCrCb.

This data is accepted in progressive scan format at 27 MHz or

HDTV format at 74.25 MHz or 74.1758 MHz. For any other

high-definition standard but SMPTE 293M, ITU-R BT.1358,

SMPTE274M or SMPTE296M the Async Timing Mode can be

used to input data to the ADV7196A. For all standards, external

horizontal, vertical, and blanking signals or EAV/SAV codes control

the insertion of appropriate synchronization signals into the digital

data stream and therefore the output signals.

The ADV7196A outputs analog YPrPb progressive scan format

complying to EIA-770.1, EIA-770.2; YPrPb HDTV complying

to EIA-770.3; RGB complying to RS-170/RS-343A.

The ADV7196A requires a single 3.3 V power supply, an

optional external 1.235 V reference and a 27 MHz clock in

Progressive Scan Mode or a 74.25 MHz (or 74.1758 MHz)

clock in HDTV mode.

In Progressive Scan Mode, a sharpness filter with programmable

gain allows high-frequency enhancement on the luminance signal.

Programmable Adaptive Filter Control, which may be used, allows

removal of ringing on the incoming Y data. The ADV7196A

supports CGMS-A data control generation and the Macrovision

Anticopy algorithm in 525p mode.

The ADV7196A is packaged in a 52-lead MQFP package.

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