WM8224 datasheet(2/50 Pages) WOLFSON

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WM8224

Production Data

PD, Rev 4.1, June 2012

TABLE OF CONTENTS

DESCRIPTION....................................................................................................... 1

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

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

BLOCK DIAGRAM ................................................................................................ 1

TABLE OF CONTENTS......................................................................................... 2

PIN CONFIGURATION .......................................................................................... 4

ORDERING INFORMATION.................................................................................. 4

PIN DESCRIPTION................................................................................................ 5

ABSOLUTE MAXIMUM RATINGS ........................................................................ 6

RECOMMENDED OPERATING CONDITIONS..................................................... 6

THERMAL PERFORMANCE................................................................................. 6

ELECTRICAL CHARACTERISTICS ..................................................................... 7

40MHZ OPERATION....................................................................................................... 7

60MHZ OPERATION....................................................................................................... 7

GENERAL CHARACTERISTICS..................................................................................... 9

INPUT VIDEO SAMPLING ............................................................................................ 11

CDS MODE (CDS=1) .................................................................................................... 11

NON-CDS MODE (CDS=0) ........................................................................................... 12

OUTPUT DATA TIMING................................................................................................ 14

SERIAL INTERFACE..................................................................................................... 15

INTERNAL POWER ON RESET CIRCUIT.......................................................... 16

DEVICE DESCRIPTION ...................................................................................... 18

INTRODUCTION ........................................................................................................... 18

CONFIGURABLE RESOLUTION OF ADC.................................................................... 18

INPUT SAMPLING ........................................................................................................ 18

RESET LEVEL CLAMPING (RLC) ................................................................................ 19

CDS/NON-CDS PROCESSING..................................................................................... 21

OFFSET ADJUST AND PROGRAMMABLE GAIN........................................................ 21

ADC INPUT BLACK LEVEL ADJUST ........................................................................... 22

OVERALL SIGNAL FLOW SUMMARY ......................................................................... 23

CALCULATING THE OUTPUT CODE FOR A GIVEN INPUT ...................................... 24

OUTPUT FORMATS ..................................................................................................... 25

PROGRAMMABLE AUTOMATIC BLACK LEVEL CALIBRATION ................................ 26

INDICATING THE START OF A BLC PROCEDURE.................................................... 27

BLC DURATION CONTROL ......................................................................................... 28

BLC WORKED EXAMPLE:............................................................................................ 29

BLC SCENARIOS OF OPERATION.............................................................................. 31

REFERENCES .............................................................................................................. 35

POWER MANAGEMENT .............................................................................................. 35

CONTROL INTERFACE................................................................................................ 35

MULTIPLE DEVICE OPERATION................................................................................. 36

OPERATING MODES ................................................................................................... 39

16-BIT MODE ................................................................................................................ 39

10-BIT MODE ................................................................................................................ 40

DEVICE CONFIGURATION................................................................................. 41

REGISTER MAP............................................................................................................ 41

APPLICATIONS INFORMATION ........................................................................ 47

RECOMMENDED EXTERNAL COMPONENTS ........................................................... 47

RECOMMENDED EXTERNAL COMPONENT VALUES .............................................. 47

PACKAGE DIMENSIONS.................................................................................... 48

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