ADV7401BSTZ-110中文资料

10-Bit, Integrated, Multiformat SDTV/HDTV Video Decoder and RGB Graphics Digitizer

FEATURES

Four 10-bit ADCs sampling up to 140 MHz (140 MHz speed grade only) 12 analog input channel mux SCART fast blank support Internal antialias filters

NTSC/PAL/SECAM color standards support

525p-/625p-component progressive scan support 720p-/1080i-component HDTV support

Digitizes RGB graphics up to 1280 × 1024 @ 75 Hz (SXGA) (140 MHz speed grade only)

24-bit digital input port supports data from DVI/HDMI Rx IC Any-to-any, 3 × 3 color-space conversion matrix Industrial temperature range ( 40°C to +85°C) 12-bit 4:4:4/8-bit 4:2:2 DDR pixel output interface Programmable interrupt request output pin VBI data slicer (including teletext)

APPLICATIONS

LCD/DLP rear projection HDTVs PDP HDTVs CRT HDTVs

LCD/DLP front projectors LCD TV (HDTV ready) HDTV STBs with PVR

Hard-disk-based video recorders Multiformat scan converters

DVD recorders with progressive scan input support AVR receiver

Rev. SpA

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 that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners.

ADV7401

GENERAL DESCRIPTION

The ADV7401 is a high quality, single chip, multiformat video decoder and graphics digitizer. This multiformat decoder

supports the conversion of PAL, NTSC, and SECAM standards in the form of composite or S-video into a digital ITU-R BT.656 format. The ADV7401 also supports the decoding of a

component RGB/YPrPb video signal into a digital YCrCb or RGB pixel output stream. The support for component video includes standards such as 525i, 625i, 525p, 625p, 720p, 1080i, 1250i, and many other HD and SMPTE standards. Graphic digitization is also supported by the ADV7401; it is capable of digitizing RGB graphics signals from VGA to SXGA rates and converting them into a digital RGB or YCrCb pixel output stream. SCART and overlay functionality are enabled by the ADV7401’s ability to simultaneously process CVBS and

standard definition RGB signals. The mixing of these signals is controlled by the fast blank pin.

The ADV7401 contains two main processing sections. The first is the standard definition processor (SDP), which processes all PAL, NTSC, and SECAM signal types. The second is the component processor (CP), which processes YPrPb and RGB component formats, including RGB graphics. For more specific descriptions of the ADV7401 features, see the Detailed Functionality and Detailed Description sections.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 http://doc.guandang.net Fax: 781.461.3113© 2005 Analog Devices, Inc. All rights reserved.

ADV7401

TABLE OF CONTENTS

Functional Block Diagram..............................................................3 Electrical Characteristics.................................................................4 Video Specifications.........................................................................6 Timing Characteristics.....................................................................7 Analog Specifications.......................................................................8 Absolute Maximum Ratings............................................................9 Stress Ratings................................................................................9 Package Thermal Performance...................................................9 Thermal Specifications................................................................9 ESD Caution..................................................................................9 Pin Configuration and Function Descriptions...........................10 Timing Diagrams............................................................................12 Detailed Functionality...................................................................13 Analog Front End.......................................................................13 SDP Pixel Data Output Modes.................................................13

CP Pixel Data Output Modes...................................................13 Composite and S-Video Processing.........................................13 Component Video Processing..................................................14 RGB Graphics Processing.........................................................14 Digital Video Input Port............................................................14 General Features.........................................................................14 Detailed Description......................................................................15 Analog Front End.......................................................................15 Standard Definition Processor (SDP)......................................15 Component Processor...............................................................15 Pixel Input/Output Formatting....................................................17 Recommended External Loop Filter Components....................18 Typical Connection Diagram.......................................................19 Outline Dimensions.......................................................................20 Ordering Guide..........................................................................20

REVISION HISTORY

9/05—Rev. Sp 0 to Rev. SpA

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