WM8352 datasheet(4/336 Pages) WOLFSON

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WM8352

Production Data

PD, February 2011, Rev 4.4

TABLE OF CONTENTS

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

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

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

TYPICAL APPLICATIONS .....................................................................................2

BLOCK DIAGRAM .................................................................................................3

TABLE OF CONTENTS .........................................................................................4

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

ORDERING INFORMATION..........................................................................9

PIN DESCRIPTION......................................................................................10

THERMAL CHARACTERISTICS .................................................................13

ABSOLUTE MAXIMUM RATINGS ..............................................................14

RECOMMENDED OPERATING CONDITIONS ...........................................15

ELECTRICAL CHARACTERISTICS............................................................16

7.1

HI-FI AUDIO CODEC......................................................................................... 16

7.2

DC-DC STEP UP CONVERTER ELECTRICAL CHARACTERISTICS............... 18

7.3

DC-DC STEP DOWN CONVERTER ELECTRICAL CHARACTERISTICS ........ 19

7.4

LDO REGULATOR ELECTRICAL CHARACTERISTICS ................................... 21

7.5

BATTERY CHARGER........................................................................................ 22

7.6

CURRENT LIMIT SWITCH ................................................................................ 22

7.7

LED DRIVERS ................................................................................................... 23

7.8

GENERAL PURPOSE INPUTS / OUTPUTS (GPIO) ......................................... 23

7.9

DIGITAL INTERFACES ..................................................................................... 24

7.10

AUXILIARY ADC ............................................................................................ 24

TYPICAL POWER CONSUMPTION............................................................25

TYPICAL PERFORMANCE DATA...............................................................27

9.1

AUDIO CODEC.................................................................................................. 27

9.2

DC-DC CONVERTERS...................................................................................... 28

9.2.1

POWER EFFICIENCY ............................................................................................................. 28

9.2.2

OUTPUT VOLTAGE REGULATION ........................................................................................ 29

9.2.3

DYNAMIC OUTPUT VOLTAGE ............................................................................................... 30

9.3

LDO REGULATORS.......................................................................................... 31

SIGNAL TIMING REQUIREMENTS.............................................................32

10.1

SYSTEM CLOCK TIMING .............................................................................. 32

10.2

AUDIO INTERFACE TIMING - MASTER MODE ............................................ 32

10.3

AUDIO INTERFACE TIMING - SLAVE MODE................................................ 33

10.4

AUDIO INTERFACE TIMING - TDM MODE ................................................... 34

10.5

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

CONTROL INTERFACE ..............................................................................38

11.1

GENERAL DESCRIPTION ............................................................................. 38

11.2

CONTROL INTERFACE MODES ................................................................... 38

11.3

2-WIRE SERIAL CONTROL MODE ............................................................... 39

11.4

3-WIRE SERIAL CONTROL MODE ............................................................... 42

11.5

4-WIRE SERIAL CONTROL MODE ............................................................... 43

11.6

11.7

SPECIAL REGISTERS ................................................................................... 44

11.7.1

CHIP ID................................................................................................................................ 44

11.7.2

DEVICE INFORMATION...................................................................................................... 44

CLOCKING, TIMING AND SAMPLE RATES ..............................................45

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