WM8351 datasheet(4/330 Pages) WOLFSON

4 / 330 page

WM8351

Production Data

PD, April 2012, Rev 4.5

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

10 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

11 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

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

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