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AD9880

Analog/HDMI Dual Display Interface

Analog Devices 

AD9880

TABLE OF CONTENTS

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

Analog Interface Electrical Characteristics............................... 3

Digital Interface Electrical Characteristics ............................... 4

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

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

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

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

Design Guide................................................................................... 12

General Description................................................................... 12

Digital Inputs .............................................................................. 12

Analog Input Signal Handling.................................................. 12

Hsync and Vsync Inputs............................................................ 12

Serial Control Port ..................................................................... 12

Output Signal Handling............................................................. 12

Clamping ..................................................................................... 12

Timing.......................................................................................... 16

HDMI Receiver........................................................................... 20

DE Generator .............................................................................. 20

4:4:4 to 4:2:2 Filter ...................................................................... 20

Audio PLL Setup......................................................................... 21

Audio Board Level Muting........................................................ 21

REVISION HISTORY

8/05—Revision 0: Initial Version

Timing Diagrams ....................................................................... 21

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

2-Wire Serial Control Register Detail.......................................... 37

Chip Identification ..................................................................... 37

PLL Divider Control .................................................................. 37

Clock Generator Control .......................................................... 37

Input Gain ................................................................................... 38

Input Offset ................................................................................. 38

Sync .............................................................................................. 39

Coast and Clamp Controls........................................................ 39

Status of Detected Signals ......................................................... 40

Polarity Status ............................................................................. 41

BT656 Generation ...................................................................... 46

Macrovision................................................................................. 48

Color Space Conversion ............................................................ 49

2-Wire Serial Control Port........................................................ 56

PCB Layout Recommendations.................................................... 58

Color Space Converter (CSC) Common Settings...................... 60

Outline Dimensions ....................................................................... 62

Ordering Guide .......................................................................... 62

Rev. 0 | Page 2 of 64

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