ANALOG DEVICES AD9882 Service Manual

Integrated Dual Interface Solutions for Superior Image Quality

The AD9882 is a high-performance, mixed-signal interface that combines low system cost and excellent image quality with reliable operation. The design of the AD9882 is optimized to meet the needs of XGA and SXGA displays without compromising performance.

The AD9882 offers designers the flexibility of an analog interface and a Digital Visual Interface (DVI) receiver integrated on a single chip. Also included is support for High-Bandwidth Digital Content Protection (HDCP).

The analog interface contains a 140 MHz triple ADC that supports resolutions up to SXGA (1280  1024 at 75 Hz) with fully integrated sync processing.

The digital interface contains a DVI version 1.0 compatible receiver and supports display resolutions up to SXGA (1280  1024 at 60 Hz).

With the inclusion of HDCP, displays may now receive encrypted video content. The AD9882 allows for authentication of a video receiver, decryption of encoded data at the receiver, and renewability of the authentication during transmission as specified by the HDCP version 1.0 protocol.

Key Features

• Low-cost dual interface technology assures legacy compatibility while still being “digital ready” for the future

• Analog interface combines high-performance triple A/D converters and low-jitter PLL for the highest image quality possible

• 140 MSPS conversion rate allows the analog interface to support display resolutions up to 1280  1024 at 75 Hz

• Midscale clamping for HDTV and DTV (YPbPr signals)

• Integrated sync processing for composite sync and sync-on-green applications

• Digital interface is fully compatible with DVI version 1.0 for FPDs to ensure unsurpassed image quality and minimal user adjustments

• 112 MHz operation allows the DVI receiver to support display resolutions up to 1280  1024 at 60 Hz

• DVI receiver includes support for HDCP with encrypted external HDCP device key storage for maximum security and the industry’s highest level of compatibility

• Evaluation board with full schematics and software is available

The AD9882 is a low cost, highly integrated dual interface device for XGA and SXGA displays.

AD9882 — Interface for Flat Panel Displays

WORLDWIDE HEADQUARTERS

One Technology Way, P.O. Box 9106 Norwood, MA 02062-9106, U.S.A. Tel: 781 329 4700 (1 800 262 5643, U.S.A. only) Fax: 781 326 8703

www.analog.com

ANALOG DEVICES GmbH

Am Westpark 1– 3 D-81373 München, Germany Tel: 49 89 76903 0 Fax: 49 89 76903 157

JAPAN HEADQUARTERS

New Pier Takeshiba South Tower Building 1-16-1 Kaigan, Minato-ku Tokyo 105-6891, Japan Tel: 3 5402 8200 Fax: 3 5402 1063

SOUTHEAST ASIA HEADQUARTERS

4501 Nat West Tower Times Square 1 Matheson Street Causeway Bay, Hong Kong, PRC Tel: 852 2 506 9336 Fax: 852 2 506 4755

Printed in the U.S.A H02900-1.5-2/02(0)

www.analog.com/flatpanel

Product Specifications

General

100–lead LQFP package 0°C to 70°C temperature range

3.3 V power supply Three-state CMOS outputs operate from

2.5 V to 3.3 V power supply

5.0 V tolerant digital inputs

Analog Interface

140 MSPS maximum conversion rate Programmable analog bandwidth

0.5 V to 1.0 V analog input range Low PLL jitter: 500 pS typical at 140 MSPS Full sync processing Midscale clamping 4:2:2 output format mode

Digital Interface

DVI 1.0 compatible interface 112 MHz operation High skew tolerance of 1 full input clock Sync detect for “hot plugging” Supports High-Bandwidth Digital Content Protection

Applications

RGB graphics processing LCD monitors and projectors Plasma display panels Scan converters Microdisplays Digital TV

AIN

CLAMP

ANALOG INTERFACE

A/D

CLAMP

A/D

OUT

SYNC

PROCESSING AND

CLOCK

GENERATION

SOGIN

HSYNC

FILT

VSYNC

DATACK

HSOUT

VSOUT

SOGOUT

REF BYPASS

SCL

SDA

Muxes

DIGITAL INTERFACE

DVI

RECEIVER

RX0+

RX0-

RX1+

RX1-

RX2+

RX2-

RXC+

RXC-

TERM

DDCSCL DDCSDA

MCL

HDCP

MDA

OUT

Hsync

Vsync

DATACK

HSOUT

VSOUT

SOGOUT

OUT

Ref

SERIAL

POWER

MANAGEMENT

AD9882 Block Diagram