ADV7191 datasheet(2/72 Pages) AD

Part #	ADV7191

Description	Video Encoders with Six 10-Bit DACs and 54 MHz Oversampling

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Manufacturer	AD [Analog Devices]

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2 / 72 page

ADV7190/ADV7191

–2–

REV. B

CONTENTS

FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

APPLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . 1

SPECIFICATIONS

5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3.3 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

5 V DYNAMIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.3 V DYNAMIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

5 V TIMING CHARACTERISTICS . . . . . . . . . . . . . . . . 6

3.3 V TIMING CHARACTERISTICS . . . . . . . . . . . . . . . . 7

ABSOLUTE MAXIMUM RATINGS . . . . . . . . . . . . . . . . . 9

PACKAGE THERMAL PERFORMANCE . . . . . . . . . . . . . 9

PIN CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

ORDERING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

PIN FUNCTION DESCRIPTIONS . . . . . . . . . . . . . . . . . 10

DETAILED DESCRIPTION OF FEATURES . . . . . . . . . 11

GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . 11

DATA PATH DESCRIPTION . . . . . . . . . . . . . . . . . . . . . 12

INTERNAL FILTER RESPONSE.. . . . . . . . . . . . . . . . . . . 13

FEATURES: FUNCTIONAL DESCRIPTION . . . . . . . . . 17

Brightness Detect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Chroma/Luma Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Clamp Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

CSO, HSO, and VSO Outputs . . . . . . . . . . . . . . . . . . . . . 17

Color Bar Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Color Burst Signal Control . . . . . . . . . . . . . . . . . . . . . . . 17

Color Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Chrominance Control . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Undershoot Limiter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Digital Noise Reduction . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Double Buffering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Gamma Correction Control . . . . . . . . . . . . . . . . . . . . . . . 18

NTSC Pedestal Control . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Power-On

RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Real-Time Control, Subcarrier Reset,

and Timing Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

SCH Phase Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Sleep Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Square Pixel Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Vertical Blanking Data Insertion And

BLANK Input . . . . 19

YUV Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

16-Bit Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4

¥ Oversampling and Internal PLL . . . . . . . . . . . . . . . . . 19

VIDEO TIMING DESCRIPTION . . . . . . . . . . . . . . . . . . . 19

RESET SEQUENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

MPU PORT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . 27

REGISTER ACCESSES . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

REGISTER PROGRAMMING . . . . . . . . . . . . . . . . . . . . . 28

MODE REGISTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

TIMING REGISTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

SUBCARRIER FREQUENCY AND

PHASE REGISTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

CLOSED CAPTIONING REGISTERS . . . . . . . . . . . . . . . 36

NTSC PEDESTAL REGISTERS . . . . . . . . . . . . . . . . . . . . 37

TELETEXT REQUEST CONTROL REGISTER . . . . . . 37

CGMS_WSS REGISTERS . . . . . . . . . . . . . . . . . . . . . . . . . 37

CONTRAST CONTROL REGISTER . . . . . . . . . . . . . . . . 38

COLOR CONTROL REGISTERS . . . . . . . . . . . . . . . . . . 38

HUE ADJUST CONTROL REGISTER . . . . . . . . . . . . . . 39

BRIGHTNESS CONTROL REGISTERS . . . . . . . . . . . . . 39

SHARPNESS CONTROL REGISTER . . . . . . . . . . . . . . . 40

DNR REGISTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

GAMMA CORRECTION REGISTERS . . . . . . . . . . . . . . 42

BRIGHTNESS DETECT REGISTER . . . . . . . . . . . . . . . . 43

OUTPUT CLOCK REGISTER . . . . . . . . . . . . . . . . . . . . . 43

APPENDIX 1

BOARD DESIGN AND LAYOUT

CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . 44

APPENDIX 2

CLOSED CAPTIONING . . . . . . . . . . . . . . . . . . . . . . . . 46

APPENDIX 3

COPY GENERATION MANAGEMENT

SYSTEM (CGMS) . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

APPENDIX 4

WISE SCREEN SIGNALING (WSS) . . . . . . . . . . . . . . . 48

APPENDIX 5

TELETEXT INSERTION . . . . . . . . . . . . . . . . . . . . . . . 49

APPENDIX 6

OPTIONAL OUTPUT FILTER . . . . . . . . . . . . . . . . . . 50

APPENDIX 7

DAC BUFFERING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

APPENDIX 8

RECOMMENDED REGISTER VALUES . . . . . . . . . . . 52

APPENDIX 9

NTSC WAVEFORMS (WITH PEDESTAL) . . . . . . . . . 56

NTSC WAVEFORMS (WITHOUT PEDESTAL) . . . . . 57

PAL WAVEFORMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

UV WAVEFORMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

OUTPUT WAVEFORMS . . . . . . . . . . . . . . . . . . . . . . . . 60

VIDEO MEASUREMENT PLOTS . . . . . . . . . . . . . . . . 64

APPENDIX 10

VECTOR PLOTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

OUTLINE DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . 69

Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

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