REV. A

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties

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

otherwise under any patent or patent rights of Analog Devices.

a

Integrated Digital CCIR-601

YCrCb to PAL/NTSC Video Encoder

ADV7175/ADV7176

© Analog Devices, Inc., 1996

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

Tel: 617/329-4700

Fax: 617/326-8703

FEATURES

CCIR-601 YCrCb to PAL/NTSC Video Encoder

Single 27 MHz Clock Required ( 2 Oversampling)

Pixel Port Supports:

CCIR-656 4:2:2 8-Bit Parallel Input Format

4:2:2 16-Bit Parallel Input Format

SMPTE 170M NTSC Compatible Composite Video Output

CCIR624/CCIR601 PAL Compatible Composite Video Output

SCART/PeriTV Support

YUV Output Mode

Simultaneous Composite and S-VHS Y/C or RGB YUV

Video Outputs

Programmable Luma Filters (Low-Pass/Notch)

Square Pixel Support (Slave Mode)

Allows Subcarrier Phase Locking with External Video

Source

10-Bit DAC Resolution for Encoded Video Channels

8-Bit DAC Resolution for RGB Output

YUV Interpolation for Accurate Subcarrier Construction

Programmable Subcarrier Frequency and Phase

Programmable LUMA Delay

Color Signal Control/Burst Signal Control

Interlaced/Noninterlaced Operation

Complete On-Chip Video Timing Generator

Master/Slave Operation Supported

Master Mode Timing Programmability

Macrovision Antitaping Facility Rev 6.1/7.x (ADV7175 Only)*

Close Captioning Support

Teletext Support (Passthrough Mode)

On-Board Color Bar Generation

On-Board Voltage Reference

+5 V CMOS Monolithic Construction

44-Pin PQFP Thermally Enhanced Package

APPLICATIONS

MPEG-1 and MPEG-2 Video

DVD

Digital Satellite/Cable Systems (Set Top Boxes/IRDs)

Video Games

CD Video/Karaoke

Professional Studio Quality

PC Video/Multimedia

GENERAL DESCRIPTION

The ADV7175/ADV7176 is an integrated digital video encoder

that converts Digital CCIR-601 4:2:2 component video data into a

standard analog baseband television signal compatible with world

wide standards NTSC, PAL B/D/G/H/I, PAL M or PAL N. In

addition to the composite output signal, there is the facility to out-

put S-VHS Y/C video, YUV or RGB video. The Y/C, YUV or

RGB format is simultaneously available at the analog outputs with

the composite video signal. Each analog output generates a

standard video-level signal into a doubly terminated 75

Ω load.

(Continued on page 6)

FUNCTIONAL BLOCK DIAGRAM

YUV TO

RBG

MATRIX

RESET

8

8

8

10

8

8

8

10

8

8

8

10

INTER-

POLATOR

YCrCb

TO

YUV

MATRIX

SIN/COS

DDS BLOCK

10

10

8

10

10

10

10

M

U

L

T

I

P

L

E

X

E

R

VIDEO TIMING

GENERATOR

4:2:2 TO

4:4:4

INTER-

POLATOR

VOLTAGE

REFERENCE

CIRCUIT

SCLOCK SDATA ALSB

8

8

HSYNC

FIELD/

VSYNC

BLANK

CLOCK

GND

GREEN/

LUMA/

Y

RED/

CHROMA/

V

BLUE/

COMPOSITE/

U

COMPOSITE

COMP

V

LOW-PASS

FILTER

ADD

BURST

8

8

8

ADV7175/ADV7176

10-BIT

DAC

COLOR

DATA

P7–P0

P15–P8

10-BIT

DAC

10-BIT

DAC

REAL-TIME

CONTROL

CIRCUIT

SCRESET/RTC

INTER-

POLATOR

ADD

BURST

INTER-

POLATOR

ADD

SYNC

U

LOW-PASS

FILTER

Y

LOW-PASS

FILTER

10-BIT

DAC

*This device is protected by U.S. Patent Numbers 4631603, 4577216, 4819098 a nd other intellectual property rights. The Macrovision anticopy process is

licensed for noncommercial home use only, which is its sole intended use in the devic e. Please contact sales office for latest Macrovision version available.