AD9882ASLASHPCB datasheet(2/40 Pages) AD

2 / 40 page

AD9882A

Rev. 0 | Page 2 of 40

TABLE OF CONTENTS

Specifications............................................................................................3

Absolute Maximum Ratings ..................................................................6

Explanation of Test Levels..................................................................6

ESD Caution ........................................................................................6

Pin Configuration and Function Descriptions....................................7

Pin Descriptions of Shared Pins between Analog and Digital

Interfaces ..............................................................................................8

Serial Port (2-Wire) ............................................................................8

Data Outputs........................................................................................8

Pin Function Detail: Analog Interface .............................................9

Power Supply .....................................................................................10

Theory of Operation: Interface Detection .........................................12

Active Interface Detection and Selection.......................................12

Power Management ..........................................................................12

Theory of Operation and Design Guide: Analog Interface .............13

General Description..........................................................................13

Input Signal Handling ......................................................................13

Hsync and Vsync Inputs ..................................................................13

Serial Control Port ............................................................................13

Output Signal Handling ...................................................................13

Clamping ............................................................................................13

Gain and Offset Control...................................................................14

Sync-on-Green (SOG)......................................................................15

Clock Generation ..............................................................................15

Timing: Analog Interface .....................................................................17

Timing Diagrams ..............................................................................18

Theory of Operation: Digital Interface...............................................19

Digital Interface Pin Descriptions ..................................................19

Capturing the Encoded Data...........................................................20

Data Frames .......................................................................................20

Special Characters .............................................................................20

Channel Resynchronization.............................................................20

Data Decoder .....................................................................................20

HDCP..................................................................................................20

General Timing Diagrams: Digital Interface.................................22

Timing Mode Diagrams: Digital Interface ....................................22

2-Wire Serial Register Map ..................................................................23

2-Wire Serial Control Register Detail.................................................26

Chip Identification ............................................................................26

PLL Divider Control .........................................................................26

Clamp Timing....................................................................................27

Hsync Output Pulse Width..............................................................27

Input Gain ..........................................................................................27

Input Offset ........................................................................................27

2-Wire Serial Control Port ...............................................................32

Sync Processing Engine ........................................................................35

Sync Slicer...........................................................................................35

Sync Separator ...................................................................................35

PCB Layout Recommendations...........................................................36

Analog Interface Inputs ....................................................................36

Digital Interface Inputs.....................................................................36

Power Supply Bypassing ...................................................................36

PLL ......................................................................................................37

Outputs: Data and Clocks ................................................................37

Digital Inputs .....................................................................................37

Voltage Reference ..............................................................................37

Outline Dimensions ..............................................................................38

Ordering Guide..................................................................................38

REVISION HISTORY

10/04—Revision 0: Initial Version

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